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-rw-r--r--Documentation/cdrom/cdrom-standard.tex9
-rw-r--r--MAINTAINERS15
-rw-r--r--block/Kconfig24
-rw-r--r--block/Kconfig.iosched50
-rw-r--r--block/Makefile10
-rw-r--r--block/bio.c16
-rw-r--r--block/blk-cgroup.c32
-rw-r--r--block/blk-core.c355
-rw-r--r--block/blk-exec.c22
-rw-r--r--block/blk-flush.c26
-rw-r--r--block/blk-integrity.c4
-rw-r--r--block/blk-ioc.c34
-rw-r--r--block/blk-map.c13
-rw-r--r--block/blk-merge.c62
-rw-r--r--block/blk-mq-debugfs.c772
-rw-r--r--block/blk-mq-sched.c515
-rw-r--r--block/blk-mq-sched.h143
-rw-r--r--block/blk-mq-sysfs.c235
-rw-r--r--block/blk-mq-tag.c190
-rw-r--r--block/blk-mq-tag.h10
-rw-r--r--block/blk-mq.c590
-rw-r--r--block/blk-mq.h72
-rw-r--r--block/blk-settings.c22
-rw-r--r--block/blk-sysfs.c68
-rw-r--r--block/blk-tag.c1
-rw-r--r--block/blk-throttle.c6
-rw-r--r--block/blk-wbt.c8
-rw-r--r--block/blk.h47
-rw-r--r--block/bsg-lib.c49
-rw-r--r--block/bsg.c64
-rw-r--r--block/cfq-iosched.c14
-rw-r--r--block/compat_ioctl.c7
-rw-r--r--block/deadline-iosched.c14
-rw-r--r--block/elevator.c267
-rw-r--r--block/genhd.c25
-rw-r--r--block/ioctl.c7
-rw-r--r--block/mq-deadline.c556
-rw-r--r--block/noop-iosched.c2
-rw-r--r--block/opal_proto.h452
-rw-r--r--block/partitions/efi.c17
-rw-r--r--block/scsi_ioctl.c83
-rw-r--r--block/sed-opal.c2488
-rw-r--r--drivers/ata/libata-scsi.c4
-rw-r--r--drivers/block/Kconfig13
-rw-r--r--drivers/block/aoe/aoeblk.c4
-rw-r--r--drivers/block/cciss.c131
-rw-r--r--drivers/block/cciss.h6
-rw-r--r--drivers/block/drbd/drbd_main.c6
-rw-r--r--drivers/block/drbd/drbd_nl.c12
-rw-r--r--drivers/block/drbd/drbd_proc.c2
-rw-r--r--drivers/block/drbd/drbd_req.c2
-rw-r--r--drivers/block/floppy.c6
-rw-r--r--drivers/block/hd.c45
-rw-r--r--drivers/block/loop.c17
-rw-r--r--drivers/block/mg_disk.c31
-rw-r--r--drivers/block/nbd.c258
-rw-r--r--drivers/block/null_blk.c10
-rw-r--r--drivers/block/osdblk.c6
-rw-r--r--drivers/block/paride/Kconfig1
-rw-r--r--drivers/block/paride/pcd.c2
-rw-r--r--drivers/block/paride/pd.c15
-rw-r--r--drivers/block/pktcdvd.c12
-rw-r--r--drivers/block/ps3disk.c15
-rw-r--r--drivers/block/rbd.c24
-rw-r--r--drivers/block/skd_main.c15
-rw-r--r--drivers/block/sx8.c4
-rw-r--r--drivers/block/virtio_blk.c205
-rw-r--r--drivers/block/xen-blkfront.c2
-rw-r--r--drivers/block/xsysace.c2
-rw-r--r--drivers/block/zram/zram_drv.c2
-rw-r--r--drivers/cdrom/cdrom.c92
-rw-r--r--drivers/cdrom/gdrom.c41
-rw-r--r--drivers/ide/Kconfig1
-rw-r--r--drivers/ide/ide-atapi.c78
-rw-r--r--drivers/ide/ide-cd.c192
-rw-r--r--drivers/ide/ide-cd_ioctl.c5
-rw-r--r--drivers/ide/ide-cd_verbose.c6
-rw-r--r--drivers/ide/ide-devsets.c13
-rw-r--r--drivers/ide/ide-disk.c12
-rw-r--r--drivers/ide/ide-eh.c8
-rw-r--r--drivers/ide/ide-floppy.c37
-rw-r--r--drivers/ide/ide-io.c13
-rw-r--r--drivers/ide/ide-ioctls.c14
-rw-r--r--drivers/ide/ide-park.c20
-rw-r--r--drivers/ide/ide-pm.c20
-rw-r--r--drivers/ide/ide-probe.c36
-rw-r--r--drivers/ide/ide-tape.c41
-rw-r--r--drivers/ide/ide-taskfile.c8
-rw-r--r--drivers/ide/sis5513.c2
-rw-r--r--drivers/lightnvm/Kconfig9
-rw-r--r--drivers/lightnvm/Makefile3
-rw-r--r--drivers/lightnvm/core.c1027
-rw-r--r--drivers/lightnvm/gennvm.c657
-rw-r--r--drivers/lightnvm/gennvm.h62
-rw-r--r--drivers/lightnvm/rrpc.c7
-rw-r--r--drivers/lightnvm/rrpc.h3
-rw-r--r--drivers/lightnvm/sysblk.c733
-rw-r--r--drivers/md/bcache/request.c12
-rw-r--r--drivers/md/bcache/super.c8
-rw-r--r--drivers/md/dm-cache-target.c15
-rw-r--r--drivers/md/dm-core.h1
-rw-r--r--drivers/md/dm-era-target.c2
-rw-r--r--drivers/md/dm-mpath.c132
-rw-r--r--drivers/md/dm-rq.c268
-rw-r--r--drivers/md/dm-rq.h2
-rw-r--r--drivers/md/dm-table.c2
-rw-r--r--drivers/md/dm-target.c7
-rw-r--r--drivers/md/dm-thin.c15
-rw-r--r--drivers/md/dm.c49
-rw-r--r--drivers/md/dm.h3
-rw-r--r--drivers/md/linear.c2
-rw-r--r--drivers/md/md.c6
-rw-r--r--drivers/md/multipath.c2
-rw-r--r--drivers/md/raid0.c6
-rw-r--r--drivers/md/raid1.c11
-rw-r--r--drivers/md/raid10.c10
-rw-r--r--drivers/md/raid5.c12
-rw-r--r--drivers/memstick/core/ms_block.c11
-rw-r--r--drivers/memstick/core/mspro_block.c13
-rw-r--r--drivers/message/fusion/mptsas.c8
-rw-r--r--drivers/mmc/core/queue.c9
-rw-r--r--drivers/mtd/mtd_blkdevs.c13
-rw-r--r--drivers/mtd/ubi/block.c15
-rw-r--r--drivers/nvme/host/core.c86
-rw-r--r--drivers/nvme/host/fc.c2
-rw-r--r--drivers/nvme/host/lightnvm.c315
-rw-r--r--drivers/nvme/host/nvme.h13
-rw-r--r--drivers/nvme/host/pci.c19
-rw-r--r--drivers/nvme/host/rdma.c6
-rw-r--r--drivers/nvme/host/scsi.c7
-rw-r--r--drivers/nvme/target/loop.c2
-rw-r--r--drivers/s390/block/scm_blk.c7
-rw-r--r--drivers/scsi/Kconfig1
-rw-r--r--drivers/scsi/device_handler/scsi_dh_emc.c247
-rw-r--r--drivers/scsi/device_handler/scsi_dh_hp_sw.c222
-rw-r--r--drivers/scsi/device_handler/scsi_dh_rdac.c174
-rw-r--r--drivers/scsi/hosts.c24
-rw-r--r--drivers/scsi/hpsa.c4
-rw-r--r--drivers/scsi/libfc/fc_lport.c2
-rw-r--r--drivers/scsi/libsas/sas_expander.c8
-rw-r--r--drivers/scsi/libsas/sas_host_smp.c38
-rw-r--r--drivers/scsi/mpt3sas/mpt3sas_scsih.c2
-rw-r--r--drivers/scsi/mpt3sas/mpt3sas_transport.c8
-rw-r--r--drivers/scsi/osd/osd_initiator.c22
-rw-r--r--drivers/scsi/osst.c18
-rw-r--r--drivers/scsi/qla2xxx/qla_bsg.c2
-rw-r--r--drivers/scsi/qla2xxx/qla_isr.c6
-rw-r--r--drivers/scsi/qla2xxx/qla_mr.c2
-rw-r--r--drivers/scsi/scsi.c354
-rw-r--r--drivers/scsi/scsi_error.c43
-rw-r--r--drivers/scsi/scsi_lib.c264
-rw-r--r--drivers/scsi/scsi_priv.h5
-rw-r--r--drivers/scsi/scsi_transport_fc.c34
-rw-r--r--drivers/scsi/scsi_transport_iscsi.c14
-rw-r--r--drivers/scsi/scsi_transport_sas.c5
-rw-r--r--drivers/scsi/sd.c48
-rw-r--r--drivers/scsi/sg.c33
-rw-r--r--drivers/scsi/smartpqi/smartpqi_init.c2
-rw-r--r--drivers/scsi/sr.c11
-rw-r--r--drivers/scsi/st.c28
-rw-r--r--drivers/scsi/sun3_scsi.c2
-rw-r--r--drivers/target/Kconfig1
-rw-r--r--drivers/target/target_core_pscsi.c14
-rw-r--r--fs/block_dev.c22
-rw-r--r--fs/btrfs/disk-io.c2
-rw-r--r--fs/btrfs/volumes.c2
-rw-r--r--fs/debugfs/inode.c36
-rw-r--r--fs/gfs2/ops_fstype.c2
-rw-r--r--fs/nfsd/Kconfig1
-rw-r--r--fs/nfsd/blocklayout.c19
-rw-r--r--fs/nilfs2/super.c2
-rw-r--r--fs/super.c2
-rw-r--r--fs/xfs/xfs_buf.c3
-rw-r--r--fs/xfs/xfs_buf.h1
-rw-r--r--include/linux/backing-dev-defs.h2
-rw-r--r--include/linux/backing-dev.h12
-rw-r--r--include/linux/blk-mq.h9
-rw-r--r--include/linux/blk_types.h38
-rw-r--r--include/linux/blkdev.h124
-rw-r--r--include/linux/blktrace_api.h18
-rw-r--r--include/linux/bsg-lib.h5
-rw-r--r--include/linux/cdrom.h5
-rw-r--r--include/linux/debugfs.h8
-rw-r--r--include/linux/device-mapper.h3
-rw-r--r--include/linux/elevator.h63
-rw-r--r--include/linux/fs.h2
-rw-r--r--include/linux/genhd.h8
-rw-r--r--include/linux/ide.h58
-rw-r--r--include/linux/lightnvm.h138
-rw-r--r--include/linux/nvme.h3
-rw-r--r--include/linux/sbitmap.h30
-rw-r--r--include/linux/sed-opal.h70
-rw-r--r--include/scsi/scsi_cmnd.h4
-rw-r--r--include/scsi/scsi_host.h5
-rw-r--r--include/scsi/scsi_request.h30
-rw-r--r--include/scsi/scsi_transport.h2
-rw-r--r--include/trace/events/block.h27
-rw-r--r--include/uapi/linux/lightnvm.h50
-rw-r--r--include/uapi/linux/sed-opal.h119
-rw-r--r--kernel/trace/blktrace.c78
-rw-r--r--lib/sbitmap.c139
-rw-r--r--mm/backing-dev.c43
-rw-r--r--mm/page-writeback.c4
203 files changed, 9729 insertions, 5577 deletions
diff --git a/Documentation/cdrom/cdrom-standard.tex b/Documentation/cdrom/cdrom-standard.tex
index c06233f..8f85b0e 100644
--- a/Documentation/cdrom/cdrom-standard.tex
+++ b/Documentation/cdrom/cdrom-standard.tex
@@ -249,7 +249,6 @@ struct& cdrom_device_ops\ \{ \hidewidth\cr
unsigned\ long);\cr
\noalign{\medskip}
&const\ int& capability;& capability flags \cr
- &int& n_minors;& number of active minor devices \cr
\};\cr
}
$$
@@ -258,13 +257,7 @@ it should add a function pointer to this $struct$. When a particular
function is not implemented, however, this $struct$ should contain a
NULL instead. The $capability$ flags specify the capabilities of the
\cdrom\ hardware and/or low-level \cdrom\ driver when a \cdrom\ drive
-is registered with the \UCD. The value $n_minors$ should be a positive
-value indicating the number of minor devices that are supported by
-the low-level device driver, normally~1. Although these two variables
-are `informative' rather than `operational,' they are included in
-$cdrom_device_ops$ because they describe the capability of the {\em
-driver\/} rather than the {\em drive}. Nomenclature has always been
-difficult in computer programming.
+is registered with the \UCD.
Note that most functions have fewer parameters than their
$blkdev_fops$ counterparts. This is because very little of the
diff --git a/MAINTAINERS b/MAINTAINERS
index 80f1a58..a0fb98c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8620,10 +8620,10 @@ S: Maintained
F: drivers/net/ethernet/netronome/
NETWORK BLOCK DEVICE (NBD)
-M: Markus Pargmann <mpa@pengutronix.de>
+M: Josef Bacik <jbacik@fb.com>
S: Maintained
+L: linux-block@vger.kernel.org
L: nbd-general@lists.sourceforge.net
-T: git git://git.pengutronix.de/git/mpa/linux-nbd.git
F: Documentation/blockdev/nbd.txt
F: drivers/block/nbd.c
F: include/uapi/linux/nbd.h
@@ -11097,6 +11097,17 @@ L: linux-mmc@vger.kernel.org
S: Maintained
F: drivers/mmc/host/sdhci-spear.c
+SECURE ENCRYPTING DEVICE (SED) OPAL DRIVER
+M: Scott Bauer <scott.bauer@intel.com>
+M: Jonathan Derrick <jonathan.derrick@intel.com>
+M: Rafael Antognolli <rafael.antognolli@intel.com>
+L: linux-block@vger.kernel.org
+S: Supported
+F: block/sed*
+F: block/opal_proto.h
+F: include/linux/sed*
+F: include/uapi/linux/sed*
+
SECURITY SUBSYSTEM
M: James Morris <james.l.morris@oracle.com>
M: "Serge E. Hallyn" <serge@hallyn.com>
diff --git a/block/Kconfig b/block/Kconfig
index 8bf114a..a2a92e5 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -49,9 +49,13 @@ config LBDAF
If unsure, say Y.
+config BLK_SCSI_REQUEST
+ bool
+
config BLK_DEV_BSG
bool "Block layer SG support v4"
default y
+ select BLK_SCSI_REQUEST
help
Saying Y here will enable generic SG (SCSI generic) v4 support
for any block device.
@@ -71,6 +75,7 @@ config BLK_DEV_BSGLIB
bool "Block layer SG support v4 helper lib"
default n
select BLK_DEV_BSG
+ select BLK_SCSI_REQUEST
help
Subsystems will normally enable this if needed. Users will not
normally need to manually enable this.
@@ -147,6 +152,25 @@ config BLK_WBT_MQ
Multiqueue currently doesn't have support for IO scheduling,
enabling this option is recommended.
+config BLK_DEBUG_FS
+ bool "Block layer debugging information in debugfs"
+ default y
+ depends on DEBUG_FS
+ ---help---
+ Include block layer debugging information in debugfs. This information
+ is mostly useful for kernel developers, but it doesn't incur any cost
+ at runtime.
+
+ Unless you are building a kernel for a tiny system, you should
+ say Y here.
+
+config BLK_SED_OPAL
+ bool "Logic for interfacing with Opal enabled SEDs"
+ ---help---
+ Builds Logic for interfacing with Opal enabled controllers.
+ Enabling this option enables users to setup/unlock/lock
+ Locking ranges for SED devices using the Opal protocol.
+
menu "Partition Types"
source "block/partitions/Kconfig"
diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched
index 421bef9..0715ce9 100644
--- a/block/Kconfig.iosched
+++ b/block/Kconfig.iosched
@@ -63,6 +63,56 @@ config DEFAULT_IOSCHED
default "cfq" if DEFAULT_CFQ
default "noop" if DEFAULT_NOOP
+config MQ_IOSCHED_DEADLINE
+ tristate "MQ deadline I/O scheduler"
+ default y
+ ---help---
+ MQ version of the deadline IO scheduler.
+
+config MQ_IOSCHED_NONE
+ bool
+ default y
+
+choice
+ prompt "Default single-queue blk-mq I/O scheduler"
+ default DEFAULT_SQ_NONE
+ help
+ Select the I/O scheduler which will be used by default for blk-mq
+ managed block devices with a single queue.
+
+ config DEFAULT_SQ_DEADLINE
+ bool "MQ Deadline" if MQ_IOSCHED_DEADLINE=y
+
+ config DEFAULT_SQ_NONE
+ bool "None"
+
+endchoice
+
+config DEFAULT_SQ_IOSCHED
+ string
+ default "mq-deadline" if DEFAULT_SQ_DEADLINE
+ default "none" if DEFAULT_SQ_NONE
+
+choice
+ prompt "Default multi-queue blk-mq I/O scheduler"
+ default DEFAULT_MQ_NONE
+ help
+ Select the I/O scheduler which will be used by default for blk-mq
+ managed block devices with multiple queues.
+
+ config DEFAULT_MQ_DEADLINE
+ bool "MQ Deadline" if MQ_IOSCHED_DEADLINE=y
+
+ config DEFAULT_MQ_NONE
+ bool "None"
+
+endchoice
+
+config DEFAULT_MQ_IOSCHED
+ string
+ default "mq-deadline" if DEFAULT_MQ_DEADLINE
+ default "none" if DEFAULT_MQ_NONE
+
endmenu
endif
diff --git a/block/Makefile b/block/Makefile
index a827f98..2ad7c30 100644
--- a/block/Makefile
+++ b/block/Makefile
@@ -6,11 +6,12 @@ obj-$(CONFIG_BLOCK) := bio.o elevator.o blk-core.o blk-tag.o blk-sysfs.o \
blk-flush.o blk-settings.o blk-ioc.o blk-map.o \
blk-exec.o blk-merge.o blk-softirq.o blk-timeout.o \
blk-lib.o blk-mq.o blk-mq-tag.o blk-stat.o \
- blk-mq-sysfs.o blk-mq-cpumap.o ioctl.o \
- genhd.o scsi_ioctl.o partition-generic.o ioprio.o \
+ blk-mq-sysfs.o blk-mq-cpumap.o blk-mq-sched.o ioctl.o \
+ genhd.o partition-generic.o ioprio.o \
badblocks.o partitions/
-obj-$(CONFIG_BOUNCE) += bounce.o
+obj-$(CONFIG_BOUNCE) += bounce.o
+obj-$(CONFIG_BLK_SCSI_REQUEST) += scsi_ioctl.o
obj-$(CONFIG_BLK_DEV_BSG) += bsg.o
obj-$(CONFIG_BLK_DEV_BSGLIB) += bsg-lib.o
obj-$(CONFIG_BLK_CGROUP) += blk-cgroup.o
@@ -18,6 +19,7 @@ obj-$(CONFIG_BLK_DEV_THROTTLING) += blk-throttle.o
obj-$(CONFIG_IOSCHED_NOOP) += noop-iosched.o
obj-$(CONFIG_IOSCHED_DEADLINE) += deadline-iosched.o
obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o
+obj-$(CONFIG_MQ_IOSCHED_DEADLINE) += mq-deadline.o
obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o
obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o
@@ -25,3 +27,5 @@ obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o t10-pi.o
obj-$(CONFIG_BLK_MQ_PCI) += blk-mq-pci.o
obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o
obj-$(CONFIG_BLK_WBT) += blk-wbt.o
+obj-$(CONFIG_BLK_DEBUG_FS) += blk-mq-debugfs.o
+obj-$(CONFIG_BLK_SED_OPAL) += sed-opal.o
diff --git a/block/bio.c b/block/bio.c
index 2b37502..4b564d0 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1227,9 +1227,6 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
if (!bio)
goto out_bmd;
- if (iter->type & WRITE)
- bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
-
ret = 0;
if (map_data) {
@@ -1394,16 +1391,10 @@ struct bio *bio_map_user_iov(struct request_queue *q,
kfree(pages);
- /*
- * set data direction, and check if mapped pages need bouncing
- */
- if (iter->type & WRITE)
- bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
-
bio_set_flag(bio, BIO_USER_MAPPED);
/*
- * subtle -- if __bio_map_user() ended up bouncing a bio,
+ * subtle -- if bio_map_user_iov() ended up bouncing a bio,
* it would normally disappear when its bi_end_io is run.
* however, we need it for the unmap, so grab an extra
* reference to it
@@ -1445,8 +1436,8 @@ static void __bio_unmap_user(struct bio *bio)
* bio_unmap_user - unmap a bio
* @bio: the bio being unmapped
*
- * Unmap a bio previously mapped by bio_map_user(). Must be called with
- * a process context.
+ * Unmap a bio previously mapped by bio_map_user_iov(). Must be called from
+ * process context.
*
* bio_unmap_user() may sleep.
*/
@@ -1590,7 +1581,6 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
bio->bi_private = data;
} else {
bio->bi_end_io = bio_copy_kern_endio;
- bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
}
return bio;
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 8ba0af7..295e98c2 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -184,7 +184,7 @@ static struct blkcg_gq *blkg_create(struct blkcg *blkcg,
goto err_free_blkg;
}
- wb_congested = wb_congested_get_create(&q->backing_dev_info,
+ wb_congested = wb_congested_get_create(q->backing_dev_info,
blkcg->css.id,
GFP_NOWAIT | __GFP_NOWARN);
if (!wb_congested) {
@@ -469,8 +469,8 @@ static int blkcg_reset_stats(struct cgroup_subsys_state *css,
const char *blkg_dev_name(struct blkcg_gq *blkg)
{
/* some drivers (floppy) instantiate a queue w/o disk registered */
- if (blkg->q->backing_dev_info.dev)
- return dev_name(blkg->q->backing_dev_info.dev);
+ if (blkg->q->backing_dev_info->dev)
+ return dev_name(blkg->q->backing_dev_info->dev);
return NULL;
}
EXPORT_SYMBOL_GPL(blkg_dev_name);
@@ -1079,10 +1079,8 @@ int blkcg_init_queue(struct request_queue *q)
if (preloaded)
radix_tree_preload_end();
- if (IS_ERR(blkg)) {
- blkg_free(new_blkg);
+ if (IS_ERR(blkg))
return PTR_ERR(blkg);
- }
q->root_blkg = blkg;
q->root_rl.blkg = blkg;
@@ -1223,7 +1221,10 @@ int blkcg_activate_policy(struct request_queue *q,
if (blkcg_policy_enabled(q, pol))
return 0;
- blk_queue_bypass_start(q);
+ if (q->mq_ops)
+ blk_mq_freeze_queue(q);
+ else
+ blk_queue_bypass_start(q);
pd_prealloc:
if (!pd_prealloc) {
pd_prealloc = pol->pd_alloc_fn(GFP_KERNEL, q->node);
@@ -1261,7 +1262,10 @@ pd_prealloc:
spin_unlock_irq(q->queue_lock);
out_bypass_end:
- blk_queue_bypass_end(q);
+ if (q->mq_ops)
+ blk_mq_unfreeze_queue(q);
+ else
+ blk_queue_bypass_end(q);
if (pd_prealloc)
pol->pd_free_fn(pd_prealloc);
return ret;
@@ -1284,7 +1288,11 @@ void blkcg_deactivate_policy(struct request_queue *q,
if (!blkcg_policy_enabled(q, pol))
return;
- blk_queue_bypass_start(q);
+ if (q->mq_ops)
+ blk_mq_freeze_queue(q);
+ else
+ blk_queue_bypass_start(q);
+
spin_lock_irq(q->queue_lock);
__clear_bit(pol->plid, q->blkcg_pols);
@@ -1304,7 +1312,11 @@ void blkcg_deactivate_policy(struct request_queue *q,
}
spin_unlock_irq(q->queue_lock);
- blk_queue_bypass_end(q);
+
+ if (q->mq_ops)
+ blk_mq_unfreeze_queue(q);
+ else
+ blk_queue_bypass_end(q);
}
EXPORT_SYMBOL_GPL(blkcg_deactivate_policy);
diff --git a/block/blk-core.c b/block/blk-core.c
index 61ba08c..b9e857f 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -33,14 +33,20 @@
#include <linux/ratelimit.h>
#include <linux/pm_runtime.h>
#include <linux/blk-cgroup.h>
+#include <linux/debugfs.h>
#define CREATE_TRACE_POINTS
#include <trace/events/block.h>
#include "blk.h"
#include "blk-mq.h"
+#include "blk-mq-sched.h"
#include "blk-wbt.h"
+#ifdef CONFIG_DEBUG_FS
+struct dentry *blk_debugfs_root;
+#endif
+
EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_remap);
EXPORT_TRACEPOINT_SYMBOL_GPL(block_rq_remap);
EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_complete);
@@ -74,7 +80,7 @@ static void blk_clear_congested(struct request_list *rl, int sync)
* flip its congestion state for events on other blkcgs.
*/
if (rl == &rl->q->root_rl)
- clear_wb_congested(rl->q->backing_dev_info.wb.congested, sync);
+ clear_wb_congested(rl->q->backing_dev_info->wb.congested, sync);
#endif
}
@@ -85,7 +91,7 @@ static void blk_set_congested(struct request_list *rl, int sync)
#else
/* see blk_clear_congested() */
if (rl == &rl->q->root_rl)
- set_wb_congested(rl->q->backing_dev_info.wb.congested, sync);
+ set_wb_congested(rl->q->backing_dev_info->wb.congested, sync);
#endif
}
@@ -104,22 +110,6 @@ void blk_queue_congestion_threshold(struct request_queue *q)
q->nr_congestion_off = nr;
}
-/**
- * blk_get_backing_dev_info - get the address of a queue's backing_dev_info
- * @bdev: device
- *
- * Locates the passed device's request queue and returns the address of its
- * backing_dev_info. This function can only be called if @bdev is opened
- * and the return value is never NULL.
- */
-struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev)
-{
- struct request_queue *q = bdev_get_queue(bdev);
-
- return &q->backing_dev_info;
-}
-EXPORT_SYMBOL(blk_get_backing_dev_info);
-
void blk_rq_init(struct request_queue *q, struct request *rq)
{
memset(rq, 0, sizeof(*rq));
@@ -131,9 +121,8 @@ void blk_rq_init(struct request_queue *q, struct request *rq)
rq->__sector = (sector_t) -1;
INIT_HLIST_NODE(&rq->hash);
RB_CLEAR_NODE(&rq->rb_node);
- rq->cmd = rq->__cmd;
- rq->cmd_len = BLK_MAX_CDB;
rq->tag = -1;
+ rq->internal_tag = -1;
rq->start_time = jiffies;
set_start_time_ns(rq);
rq->part = NULL;
@@ -158,10 +147,8 @@ static void req_bio_endio(struct request *rq, struct bio *bio,
void blk_dump_rq_flags(struct request *rq, char *msg)
{
- int bit;
-
- printk(KERN_INFO "%s: dev %s: type=%x, flags=%llx\n", msg,
- rq->rq_disk ? rq->rq_disk->disk_name : "?", rq->cmd_type,
+ printk(KERN_INFO "%s: dev %s: flags=%llx\n", msg,
+ rq->rq_disk ? rq->rq_disk->disk_name : "?",
(unsigned long long) rq->cmd_flags);
printk(KERN_INFO " sector %llu, nr/cnr %u/%u\n",
@@ -169,13 +156,6 @@ void blk_dump_rq_flags(struct request *rq, char *msg)
blk_rq_sectors(rq), blk_rq_cur_sectors(rq));
printk(KERN_INFO " bio %p, biotail %p, len %u\n",
rq->bio, rq->biotail, blk_rq_bytes(rq));
-
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
- printk(KERN_INFO " cdb: ");
- for (bit = 0; bit < BLK_MAX_CDB; bit++)
- printk("%02x ", rq->cmd[bit]);
- printk("\n");
- }
}
EXPORT_SYMBOL(blk_dump_rq_flags);
@@ -525,12 +505,14 @@ void blk_set_queue_dying(struct request_queue *q)
else {
struct request_list *rl;
+ spin_lock_irq(q->queue_lock);
blk_queue_for_each_rl(rl, q) {
if (rl->rq_pool) {
wake_up(&rl->wait[BLK_RW_SYNC]);
wake_up(&rl->wait[BLK_RW_ASYNC]);
}
}
+ spin_unlock_irq(q->queue_lock);
}
}
EXPORT_SYMBOL_GPL(blk_set_queue_dying);
@@ -584,7 +566,7 @@ void blk_cleanup_queue(struct request_queue *q)
blk_flush_integrity();
/* @q won't process any more request, flush async actions */
- del_timer_sync(&q->backing_dev_info.laptop_mode_wb_timer);
+ del_timer_sync(&q->backing_dev_info->laptop_mode_wb_timer);
blk_sync_queue(q);
if (q->mq_ops)
@@ -596,7 +578,8 @@ void blk_cleanup_queue(struct request_queue *q)
q->queue_lock = &q->__queue_lock;
spin_unlock_irq(lock);
- bdi_unregister(&q->backing_dev_info);
+ bdi_unregister(q->backing_dev_info);
+ put_disk_devt(q->disk_devt);
/* @q is and will stay empty, shutdown and put */
blk_put_queue(q);
@@ -604,17 +587,41 @@ void blk_cleanup_queue(struct request_queue *q)
EXPORT_SYMBOL(blk_cleanup_queue);
/* Allocate memory local to the request queue */
-static void *alloc_request_struct(gfp_t gfp_mask, void *data)
+static void *alloc_request_simple(gfp_t gfp_mask, void *data)
{
- int nid = (int)(long)data;
- return kmem_cache_alloc_node(request_cachep, gfp_mask, nid);
+ struct request_queue *q = data;
+
+ return kmem_cache_alloc_node(request_cachep, gfp_mask, q->node);
}
-static void free_request_struct(void *element, void *unused)
+static void free_request_simple(void *element, void *data)
{
kmem_cache_free(request_cachep, element);
}
+static void *alloc_request_size(gfp_t gfp_mask, void *data)
+{
+ struct request_queue *q = data;
+ struct request *rq;
+
+ rq = kmalloc_node(sizeof(struct request) + q->cmd_size, gfp_mask,
+ q->node);
+ if (rq && q->init_rq_fn && q->init_rq_fn(q, rq, gfp_mask) < 0) {
+ kfree(rq);
+ rq = NULL;
+ }
+ return rq;
+}
+
+static void free_request_size(void *element, void *data)
+{
+ struct request_queue *q = data;
+
+ if (q->exit_rq_fn)
+ q->exit_rq_fn(q, element);
+ kfree(element);
+}
+
int blk_init_rl(struct request_list *rl, struct request_queue *q,
gfp_t gfp_mask)
{
@@ -627,10 +634,15 @@ int blk_init_rl(struct request_list *rl, struct request_queue *q,
init_waitqueue_head(&rl->wait[BLK_RW_SYNC]);
init_waitqueue_head(&rl->wait[BLK_RW_ASYNC]);
- rl->rq_pool = mempool_create_node(BLKDEV_MIN_RQ, alloc_request_struct,
- free_request_struct,
- (void *)(long)q->node, gfp_mask,
- q->node);
+ if (q->cmd_size) {
+ rl->rq_pool = mempool_create_node(BLKDEV_MIN_RQ,
+ alloc_request_size, free_request_size,
+ q, gfp_mask, q->node);
+ } else {
+ rl->rq_pool = mempool_create_node(BLKDEV_MIN_RQ,
+ alloc_request_simple, free_request_simple,
+ q, gfp_mask, q->node);
+ }
if (!rl->rq_pool)
return -ENOMEM;
@@ -693,7 +705,6 @@ static void blk_rq_timed_out_timer(unsigned long data)
struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
{
struct request_queue *q;
- int err;
q = kmem_cache_alloc_node(blk_requestq_cachep,
gfp_mask | __GFP_ZERO, node_id);
@@ -708,17 +719,17 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
if (!q->bio_split)
goto fail_id;
- q->backing_dev_info.ra_pages =
+ q->backing_dev_info = bdi_alloc_node(gfp_mask, node_id);
+ if (!q->backing_dev_info)
+ goto fail_split;
+
+ q->backing_dev_info->ra_pages =
(VM_MAX_READAHEAD * 1024) / PAGE_SIZE;
- q->backing_dev_info.capabilities = BDI_CAP_CGROUP_WRITEBACK;
- q->backing_dev_info.name = "block";
+ q->backing_dev_info->capabilities = BDI_CAP_CGROUP_WRITEBACK;
+ q->backing_dev_info->name = "block";
q->node = node_id;
- err = bdi_init(&q->backing_dev_info);
- if (err)
- goto fail_split;
-
- setup_timer(&q->backing_dev_info.laptop_mode_wb_timer,
+ setup_timer(&q->backing_dev_info->laptop_mode_wb_timer,
laptop_mode_timer_fn, (unsigned long) q);
setup_timer(&q->timeout, blk_rq_timed_out_timer, (unsigned long) q);
INIT_LIST_HEAD(&q->queue_head);
@@ -768,7 +779,7 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
fail_ref:
percpu_ref_exit(&q->q_usage_counter);
fail_bdi:
- bdi_destroy(&q->backing_dev_info);
+ bdi_put(q->backing_dev_info);
fail_split:
bioset_free(q->bio_split);
fail_id:
@@ -821,15 +832,19 @@ EXPORT_SYMBOL(blk_init_queue);
struct request_queue *
blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
{
- struct request_queue *uninit_q, *q;
+ struct request_queue *q;
- uninit_q = blk_alloc_queue_node(GFP_KERNEL, node_id);
- if (!uninit_q)
+ q = blk_alloc_queue_node(GFP_KERNEL, node_id);
+ if (!q)
return NULL;
- q = blk_init_allocated_queue(uninit_q, rfn, lock);
- if (!q)
- blk_cleanup_queue(uninit_q);
+ q->request_fn = rfn;
+ if (lock)
+ q->queue_lock = lock;
+ if (blk_init_allocated_queue(q) < 0) {
+ blk_cleanup_queue(q);
+ return NULL;
+ }
return q;
}
@@ -837,30 +852,22 @@ EXPORT_SYMBOL(blk_init_queue_node);
static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio);
-struct request_queue *
-blk_init_allocated_queue(struct request_queue *q, request_fn_proc *rfn,
- spinlock_t *lock)
-{
- if (!q)
- return NULL;
- q->fq = blk_alloc_flush_queue(q, NUMA_NO_NODE, 0);
+int blk_init_allocated_queue(struct request_queue *q)
+{
+ q->fq = blk_alloc_flush_queue(q, NUMA_NO_NODE, q->cmd_size);
if (!q->fq)
- return NULL;
+ return -ENOMEM;
+
+ if (q->init_rq_fn && q->init_rq_fn(q, q->fq->flush_rq, GFP_KERNEL))
+ goto out_free_flush_queue;
if (blk_init_rl(&q->root_rl, q, GFP_KERNEL))
- goto fail;
+ goto out_exit_flush_rq;
INIT_WORK(&q->timeout_work, blk_timeout_work);
- q->request_fn = rfn;
- q->prep_rq_fn = NULL;
- q->unprep_rq_fn = NULL;
q->queue_flags |= QUEUE_FLAG_DEFAULT;
- /* Override internal queue lock with supplied lock pointer */
- if (lock)
- q->queue_lock = lock;
-
/*
* This also sets hw/phys segments, boundary and size
*/
@@ -874,17 +881,19 @@ blk_init_allocated_queue(struct request_queue *q, request_fn_proc *rfn,
/* init elevator */
if (elevator_init(q, NULL)) {
mutex_unlock(&q->sysfs_lock);
- goto fail;
+ goto out_exit_flush_rq;
}
mutex_unlock(&q->sysfs_lock);
+ return 0;
- return q;
-
-fail:
+out_exit_flush_rq:
+ if (q->exit_rq_fn)
+ q->exit_rq_fn(q, q->fq->flush_rq);
+out_free_flush_queue:
blk_free_flush_queue(q->fq);
wbt_exit(q);
- return NULL;
+ return -ENOMEM;
}
EXPORT_SYMBOL(blk_init_allocated_queue);
@@ -1020,41 +1029,6 @@ int blk_update_nr_requests(struct request_queue *q, unsigned int nr)
return 0;
}
-/*
- * Determine if elevator data should be initialized when allocating the
- * request associated with @bio.
- */
-static bool blk_rq_should_init_elevator(struct bio *bio)
-{
- if (!bio)
- return true;
-
- /*
- * Flush requests do not use the elevator so skip initialization.
- * This allows a request to share the flush and elevator data.
- */
- if (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA))
- return false;
-
- return true;
-}
-
-/**
- * rq_ioc - determine io_context for request allocation
- * @bio: request being allocated is for this bio (can be %NULL)
- *
- * Determine io_context to use for request allocation for @bio. May return
- * %NULL if %current->io_context doesn't exist.
- */
-static struct io_context *rq_ioc(struct bio *bio)
-{
-#ifdef CONFIG_BLK_CGROUP
- if (bio && bio->bi_ioc)
- return bio->bi_ioc;
-#endif
- return current->io_context;
-}
-
/**
* __get_request - get a free request
* @rl: request list to allocate from
@@ -1133,10 +1107,13 @@ static struct request *__get_request(struct request_list *rl, unsigned int op,
* request is freed. This guarantees icq's won't be destroyed and
* makes creating new ones safe.
*
+ * Flush requests do not use the elevator so skip initialization.
+ * This allows a request to share the flush and elevator data.
+ *
* Also, lookup icq while holding queue_lock. If it doesn't exist,
* it will be created after releasing queue_lock.
*/
- if (blk_rq_should_init_elevator(bio) && !blk_queue_bypass(q)) {
+ if (!op_is_flush(op) && !blk_queue_bypass(q)) {
rq_flags |= RQF_ELVPRIV;
q->nr_rqs_elvpriv++;
if (et->icq_cache && ioc)
@@ -1196,7 +1173,7 @@ fail_elvpriv:
* disturb iosched and blkcg but weird is bettern than dead.
*/
printk_ratelimited(KERN_WARNING "%s: dev %s: request aux data allocation failed, iosched may be disturbed\n",
- __func__, dev_name(q->backing_dev_info.dev));
+ __func__, dev_name(q->backing_dev_info->dev));
rq->rq_flags &= ~RQF_ELVPRIV;
rq->elv.icq = NULL;
@@ -1290,8 +1267,6 @@ static struct request *blk_old_get_request(struct request_queue *q, int rw,
{
struct request *rq;
- BUG_ON(rw != READ && rw != WRITE);
-
/* create ioc upfront */
create_io_context(gfp_mask, q->node);
@@ -1321,18 +1296,6 @@ struct request *blk_get_request(struct request_queue *q, int rw, gfp_t gfp_mask)
EXPORT_SYMBOL(blk_get_request);
/**
- * blk_rq_set_block_pc - initialize a request to type BLOCK_PC
- * @rq: request to be initialized
- *
- */
-void blk_rq_set_block_pc(struct request *rq)
-{
- rq->cmd_type = REQ_TYPE_BLOCK_PC;
- memset(rq->__cmd, 0, sizeof(rq->__cmd));
-}
-EXPORT_SYMBOL(blk_rq_set_block_pc);
-
-/**
* blk_requeue_request - put a request back on queue
* @q: request queue where request should be inserted
* @rq: request to be inserted
@@ -1522,6 +1485,30 @@ bool bio_attempt_front_merge(struct request_queue *q, struct request *req,
return true;
}
+bool bio_attempt_discard_merge(struct request_queue *q, struct request *req,
+ struct bio *bio)
+{
+ unsigned short segments = blk_rq_nr_discard_segments(req);
+
+ if (segments >= queue_max_discard_segments(q))
+ goto no_merge;
+ if (blk_rq_sectors(req) + bio_sectors(bio) >
+ blk_rq_get_max_sectors(req, blk_rq_pos(req)))
+ goto no_merge;
+
+ req->biotail->bi_next = bio;
+ req->biotail = bio;
+ req->__data_len += bio->bi_iter.bi_size;
+ req->ioprio = ioprio_best(req->ioprio, bio_prio(bio));
+ req->nr_phys_segments = segments + 1;
+
+ blk_account_io_start(req, false);
+ return true;
+no_merge:
+ req_set_nomerge(q, req);
+ return false;
+}
+
/**
* blk_attempt_plug_merge - try to merge with %current's plugged list
* @q: request_queue new bio is being queued at
@@ -1550,12 +1537,11 @@ bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
{
struct blk_plug *plug;
struct request *rq;
- bool ret = false;
struct list_head *plug_list;
plug = current->plug;
if (!plug)
- goto out;
+ return false;
*request_count = 0;
if (q->mq_ops)
@@ -1564,7 +1550,7 @@ bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
plug_list = &plug->list;
list_for_each_entry_reverse(rq, plug_list, queuelist) {
- int el_ret;
+ bool merged = false;
if (rq->q == q) {
(*request_count)++;
@@ -1580,19 +1566,25 @@ bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
if (rq->q != q || !blk_rq_merge_ok(rq, bio))
continue;
- el_ret = blk_try_merge(rq, bio);
- if (el_ret == ELEVATOR_BACK_MERGE) {
- ret = bio_attempt_back_merge(q, rq, bio);
- if (ret)
- break;
- } else if (el_ret == ELEVATOR_FRONT_MERGE) {
- ret = bio_attempt_front_merge(q, rq, bio);
- if (ret)
- break;
+ switch (blk_try_merge(rq, bio)) {
+ case ELEVATOR_BACK_MERGE:
+ merged = bio_attempt_back_merge(q, rq, bio);
+ break;
+ case ELEVATOR_FRONT_MERGE:
+ merged = bio_attempt_front_merge(q, rq, bio);
+ break;
+ case ELEVATOR_DISCARD_MERGE:
+ merged = bio_attempt_discard_merge(q, rq, bio);
+ break;
+ default:
+ break;
}
+
+ if (merged)
+ return true;
}
-out:
- return ret;
+
+ return false;
}
unsigned int blk_plug_queued_count(struct request_queue *q)
@@ -1621,7 +1613,6 @@ out:
void init_request_from_bio(struct request *req, struct bio *bio)
{
- req->cmd_type = REQ_TYPE_FS;
if (bio->bi_opf & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
@@ -1635,8 +1626,8 @@ void init_request_from_bio(struct request *req, struct bio *bio)
static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
{
struct blk_plug *plug;
- int el_ret, where = ELEVATOR_INSERT_SORT;
- struct request *req;
+ int where = ELEVATOR_INSERT_SORT;
+ struct request *req, *free;
unsigned int request_count = 0;
unsigned int wb_acct;
@@ -1655,7 +1646,7 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
return BLK_QC_T_NONE;
}
- if (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA)) {
+ if (op_is_flush(bio->bi_opf)) {
spin_lock_irq(q->queue_lock);
where = ELEVATOR_INSERT_FLUSH;
goto get_rq;
@@ -1673,21 +1664,29 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
spin_lock_irq(q->queue_lock);
- el_ret = elv_merge(q, &req, bio);
- if (el_ret == ELEVATOR_BACK_MERGE) {
- if (bio_attempt_back_merge(q, req, bio)) {
- elv_bio_merged(q, req, bio);
- if (!attempt_back_merge(q, req))
- elv_merged_request(q, req, el_ret);
- goto out_unlock;
- }
- } else if (el_ret == ELEVATOR_FRONT_MERGE) {
- if (bio_attempt_front_merge(q, req, bio)) {
- elv_bio_merged(q, req, bio);
- if (!attempt_front_merge(q, req))
- elv_merged_request(q, req, el_ret);
- goto out_unlock;
- }
+ switch (elv_merge(q, &req, bio)) {
+ case ELEVATOR_BACK_MERGE:
+ if (!bio_attempt_back_merge(q, req, bio))
+ break;
+ elv_bio_merged(q, req, bio);
+ free = attempt_back_merge(q, req);
+ if (free)
+ __blk_put_request(q, free);
+ else
+ elv_merged_request(q, req, ELEVATOR_BACK_MERGE);
+ goto out_unlock;
+ case ELEVATOR_FRONT_MERGE:
+ if (!bio_attempt_front_merge(q, req, bio))
+ break;
+ elv_bio_merged(q, req, bio);
+ free = attempt_front_merge(q, req);
+ if (free)
+ __blk_put_request(q, free);
+ else
+ elv_merged_request(q, req, ELEVATOR_FRONT_MERGE);
+ goto out_unlock;
+ default:
+ break;
}
get_rq:
@@ -1894,7 +1893,7 @@ generic_make_request_checks(struct bio *bio)
* drivers without flush support don't have to worry
* about them.
*/
- if ((bio->bi_opf & (REQ_PREFLUSH | REQ_FUA)) &&
+ if (op_is_flush(bio->bi_opf) &&
!test_bit(QUEUE_FLAG_WC, &q->queue_flags)) {
bio->bi_opf &= ~(REQ_PREFLUSH | REQ_FUA);
if (!nr_sectors) {
@@ -2143,7 +2142,7 @@ int blk_insert_cloned_request(struct request_queue *q, struct request *rq)
if (q->mq_ops) {
if (blk_queue_io_stat(q))
blk_account_io_start(rq, true);
- blk_mq_insert_request(rq, false, true, false);
+ blk_mq_sched_insert_request(rq, false, true, false, false);
return 0;
}
@@ -2159,7 +2158,7 @@ int blk_insert_cloned_request(struct request_queue *q, struct request *rq)
*/
BUG_ON(blk_queued_rq(rq));
- if (rq->cmd_flags & (REQ_PREFLUSH | REQ_FUA))
+ if (op_is_flush(rq->cmd_flags))
where = ELEVATOR_INSERT_FLUSH;
add_acct_request(q, rq, where);
@@ -2464,14 +2463,6 @@ void blk_start_request(struct request *req)
wbt_issue(req->q->rq_wb, &req->issue_stat);
}
- /*
- * We are now handing the request to the hardware, initialize
- * resid_len to full count and add the timeout handler.
- */
- req->resid_len = blk_rq_bytes(req);
- if (unlikely(blk_bidi_rq(req)))
- req->next_rq->resid_len = blk_rq_bytes(req->next_rq);
-
BUG_ON(test_bit(REQ_ATOM_COMPLETE, &req->atomic_flags));
blk_add_timer(req);
}
@@ -2542,10 +2533,10 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
* TODO: tj: This is too subtle. It would be better to let
* low level drivers do what they see fit.
*/
- if (req->cmd_type == REQ_TYPE_FS)
+ if (!blk_rq_is_passthrough(req))
req->errors = 0;
- if (error && req->cmd_type == REQ_TYPE_FS &&
+ if (error && !blk_rq_is_passthrough(req) &&
!(req->rq_flags & RQF_QUIET)) {
char *error_type;
@@ -2617,7 +2608,7 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
req->__data_len -= total_bytes;
/* update sector only for requests with clear definition of sector */
- if (req->cmd_type == REQ_TYPE_FS)
+ if (!blk_rq_is_passthrough(req))
req->__sector += total_bytes >> 9;
/* mixed attributes always follow the first bio */
@@ -2695,8 +2686,8 @@ void blk_finish_request(struct request *req, int error)
BUG_ON(blk_queued_rq(req));
- if (unlikely(laptop_mode) && req->cmd_type == REQ_TYPE_FS)
- laptop_io_completion(&req->q->backing_dev_info);
+ if (unlikely(laptop_mode) && !blk_rq_is_passthrough(req))
+ laptop_io_completion(req->q->backing_dev_info);
blk_delete_timer(req);
@@ -3019,8 +3010,6 @@ EXPORT_SYMBOL_GPL(blk_rq_unprep_clone);
static void __blk_rq_prep_clone(struct request *dst, struct request *src)
{
dst->cpu = src->cpu;
- dst->cmd_flags = src->cmd_flags | REQ_NOMERGE;
- dst->cmd_type = src->cmd_type;
dst->__sector = blk_rq_pos(src);
dst->__data_len = blk_rq_bytes(src);
dst->nr_phys_segments = src->nr_phys_segments;
@@ -3270,7 +3259,7 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule)
/*
* rq is already accounted, so use raw insert
*/
- if (rq->cmd_flags & (REQ_PREFLUSH | REQ_FUA))
+ if (op_is_flush(rq->cmd_flags))
__elv_add_request(q, rq, ELEVATOR_INSERT_FLUSH);
else
__elv_add_request(q, rq, ELEVATOR_INSERT_SORT_MERGE);
@@ -3496,5 +3485,9 @@ int __init blk_dev_init(void)
blk_requestq_cachep = kmem_cache_create("request_queue",
sizeof(struct request_queue), 0, SLAB_PANIC, NULL);
+#ifdef CONFIG_DEBUG_FS
+ blk_debugfs_root = debugfs_create_dir("block", NULL);
+#endif
+
return 0;
}
diff --git a/block/blk-exec.c b/block/blk-exec.c
index 3ecb00a..8cd0e9b 100644
--- a/block/blk-exec.c
+++ b/block/blk-exec.c
@@ -9,11 +9,7 @@
#include <linux/sched/sysctl.h>
#include "blk.h"
-
-/*
- * for max sense size
- */
-#include <scsi/scsi_cmnd.h>
+#include "blk-mq-sched.h"
/**
* blk_end_sync_rq - executes a completion event on a request
@@ -55,7 +51,7 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
WARN_ON(irqs_disabled());
- WARN_ON(rq->cmd_type == REQ_TYPE_FS);
+ WARN_ON(!blk_rq_is_passthrough(rq));
rq->rq_disk = bd_disk;
rq->end_io = done;
@@ -65,7 +61,7 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
* be reused after dying flag is set
*/
if (q->mq_ops) {
- blk_mq_insert_request(rq, at_head, true, false);
+ blk_mq_sched_insert_request(rq, at_head, true, false, false);
return;
}
@@ -100,16 +96,9 @@ int blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
struct request *rq, int at_head)
{
DECLARE_COMPLETION_ONSTACK(wait);
- char sense[SCSI_SENSE_BUFFERSIZE];
int err = 0;
unsigned long hang_check;
- if (!rq->sense) {
- memset(sense, 0, sizeof(sense));
- rq->sense = sense;
- rq->sense_len = 0;
- }
-
rq->end_io_data = &wait;
blk_execute_rq_nowait(q, bd_disk, rq, at_head, blk_end_sync_rq);
@@ -123,11 +112,6 @@ int blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
if (rq->errors)
err = -EIO;
- if (rq->sense == sense) {
- rq->sense = NULL;
- rq->sense_len = 0;
- }
-
return err;
}
EXPORT_SYMBOL(blk_execute_rq);
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 20b7c7a..0d5a9c1 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -74,6 +74,7 @@
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
+#include "blk-mq-sched.h"
/* FLUSH/FUA sequences */
enum {
@@ -296,8 +297,14 @@ static bool blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq)
if (fq->flush_pending_idx != fq->flush_running_idx || list_empty(pending))
return false;
- /* C2 and C3 */
+ /* C2 and C3
+ *
+ * For blk-mq + scheduling, we can risk having all driver tags
+ * assigned to empty flushes, and we deadlock if we are expecting
+ * other requests to make progress. Don't defer for that case.
+ */
if (!list_empty(&fq->flush_data_in_flight) &&
+ !(q->mq_ops && q->elevator) &&
time_before(jiffies,
fq->flush_pending_since + FLUSH_PENDING_TIMEOUT))
return false;
@@ -326,7 +333,6 @@ static bool blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq)
blk_mq_tag_set_rq(hctx, first_rq->tag, flush_rq);
}
- flush_rq->cmd_type = REQ_TYPE_FS;
flush_rq->cmd_flags = REQ_OP_FLUSH | REQ_PREFLUSH;
flush_rq->rq_flags |= RQF_FLUSH_SEQ;
flush_rq->rq_disk = first_rq->rq_disk;
@@ -391,9 +397,10 @@ static void mq_flush_data_end_io(struct request *rq, int error)
* the comment in flush_end_io().
*/
spin_lock_irqsave(&fq->mq_flush_lock, flags);
- if (blk_flush_complete_seq(rq, fq, REQ_FSEQ_DATA, error))
- blk_mq_run_hw_queue(hctx, true);
+ blk_flush_complete_seq(rq, fq, REQ_FSEQ_DATA, error);
spin_unlock_irqrestore(&fq->mq_flush_lock, flags);
+
+ blk_mq_run_hw_queue(hctx, true);
}
/**
@@ -453,9 +460,9 @@ void blk_insert_flush(struct request *rq)
*/
if ((policy & REQ_FSEQ_DATA) &&
!(policy & (REQ_FSEQ_PREFLUSH | REQ_FSEQ_POSTFLUSH))) {
- if (q->mq_ops) {
- blk_mq_insert_request(rq, false, true, false);
- } else
+ if (q->mq_ops)
+ blk_mq_sched_insert_request(rq, false, true, false, false);
+ else
list_add_tail(&rq->queuelist, &q->queue_head);
return;
}
@@ -545,11 +552,10 @@ struct blk_flush_queue *blk_alloc_flush_queue(struct request_queue *q,
if (!fq)
goto fail;
- if (q->mq_ops) {
+ if (q->mq_ops)
spin_lock_init(&fq->mq_flush_lock);
- rq_sz = round_up(rq_sz + cmd_size, cache_line_size());
- }
+ rq_sz = round_up(rq_sz + cmd_size, cache_line_size());
fq->flush_rq = kzalloc_node(rq_sz, GFP_KERNEL, node);
if (!fq->flush_rq)
goto fail_rq;
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index d69c5c7..9f0ff5b 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -443,10 +443,10 @@ void blk_integrity_revalidate(struct gendisk *disk)
return;
if (bi->profile)
- disk->queue->backing_dev_info.capabilities |=
+ disk->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
else
- disk->queue->backing_dev_info.capabilities &=
+ disk->queue->backing_dev_info->capabilities &=
~BDI_CAP_STABLE_WRITES;
}
diff --git a/block/blk-ioc.c b/block/blk-ioc.c
index 381cb50..b12f9c8 100644
--- a/block/blk-ioc.c
+++ b/block/blk-ioc.c
@@ -35,7 +35,10 @@ static void icq_free_icq_rcu(struct rcu_head *head)
kmem_cache_free(icq->__rcu_icq_cache, icq);
}
-/* Exit an icq. Called with both ioc and q locked. */
+/*
+ * Exit an icq. Called with both ioc and q locked for sq, only ioc locked for
+ * mq.
+ */
static void ioc_exit_icq(struct io_cq *icq)
{
struct elevator_type *et = icq->q->elevator->type;
@@ -43,8 +46,10 @@ static void ioc_exit_icq(struct io_cq *icq)
if (icq->flags & ICQ_EXITED)
return;
- if (et->ops.elevator_exit_icq_fn)
- et->ops.elevator_exit_icq_fn(icq);
+ if (et->uses_mq && et->ops.mq.exit_icq)
+ et->ops.mq.exit_icq(icq);
+ else if (!et->uses_mq && et->ops.sq.elevator_exit_icq_fn)
+ et->ops.sq.elevator_exit_icq_fn(icq);
icq->flags |= ICQ_EXITED;
}
@@ -164,6 +169,7 @@ EXPORT_SYMBOL(put_io_context);
*/
void put_io_context_active(struct io_context *ioc)
{
+ struct elevator_type *et;
unsigned long flags;
struct io_cq *icq;
@@ -182,13 +188,19 @@ retry:
hlist_for_each_entry(icq, &ioc->icq_list, ioc_node) {
if (icq->flags & ICQ_EXITED)
continue;
- if (spin_trylock(icq->q->queue_lock)) {
+
+ et = icq->q->elevator->type;
+ if (et->uses_mq) {
ioc_exit_icq(icq);
- spin_unlock(icq->q->queue_lock);
} else {
- spin_unlock_irqrestore(&ioc->lock, flags);
- cpu_relax();
- goto retry;
+ if (spin_trylock(icq->q->queue_lock)) {
+ ioc_exit_icq(icq);
+ spin_unlock(icq->q->queue_lock);
+ } else {
+ spin_unlock_irqrestore(&ioc->lock, flags);
+ cpu_relax();
+ goto retry;
+ }
}
}
spin_unlock_irqrestore(&ioc->lock, flags);
@@ -383,8 +395,10 @@ struct io_cq *ioc_create_icq(struct io_context *ioc, struct request_queue *q,
if (likely(!radix_tree_insert(&ioc->icq_tree, q->id, icq))) {
hlist_add_head(&icq->ioc_node, &ioc->icq_list);
list_add(&icq->q_node, &q->icq_list);
- if (et->ops.elevator_init_icq_fn)
- et->ops.elevator_init_icq_fn(icq);
+ if (et->uses_mq && et->ops.mq.init_icq)
+ et->ops.mq.init_icq(icq);
+ else if (!et->uses_mq && et->ops.sq.elevator_init_icq_fn)
+ et->ops.sq.elevator_init_icq_fn(icq);
} else {
kmem_cache_free(et->icq_cache, icq);
icq = ioc_lookup_icq(ioc, q);
diff --git a/block/blk-map.c b/block/blk-map.c
index 0acb664..2f18c2a 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -16,8 +16,6 @@
int blk_rq_append_bio(struct request *rq, struct bio *bio)
{
if (!rq->bio) {
- rq->cmd_flags &= REQ_OP_MASK;
- rq->cmd_flags |= (bio->bi_opf & REQ_OP_MASK);
blk_rq_bio_prep(rq->q, rq, bio);
} else {
if (!ll_back_merge_fn(rq->q, rq, bio))
@@ -62,6 +60,9 @@ static int __blk_rq_map_user_iov(struct request *rq,
if (IS_ERR(bio))
return PTR_ERR(bio);
+ bio->bi_opf &= ~REQ_OP_MASK;
+ bio->bi_opf |= req_op(rq);
+
if (map_data && map_data->null_mapped)
bio_set_flag(bio, BIO_NULL_MAPPED);
@@ -90,7 +91,7 @@ static int __blk_rq_map_user_iov(struct request *rq,
}
/**
- * blk_rq_map_user_iov - map user data to a request, for REQ_TYPE_BLOCK_PC usage
+ * blk_rq_map_user_iov - map user data to a request, for passthrough requests
* @q: request queue where request should be inserted
* @rq: request to map data to
* @map_data: pointer to the rq_map_data holding pages (if necessary)
@@ -199,7 +200,7 @@ int blk_rq_unmap_user(struct bio *bio)
EXPORT_SYMBOL(blk_rq_unmap_user);
/**
- * blk_rq_map_kern - map kernel data to a request, for REQ_TYPE_BLOCK_PC usage
+ * blk_rq_map_kern - map kernel data to a request, for passthrough requests
* @q: request queue where request should be inserted
* @rq: request to fill
* @kbuf: the kernel buffer
@@ -234,8 +235,8 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
if (IS_ERR(bio))
return PTR_ERR(bio);
- if (!reading)
- bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
+ bio->bi_opf &= ~REQ_OP_MASK;
+ bio->bi_opf |= req_op(rq);
if (do_copy)
rq->rq_flags |= RQF_COPY_USER;
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 182398c..2afa262 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -482,13 +482,6 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq,
}
EXPORT_SYMBOL(blk_rq_map_sg);
-static void req_set_nomerge(struct request_queue *q, struct request *req)
-{
- req->cmd_flags |= REQ_NOMERGE;
- if (req == q->last_merge)
- q->last_merge = NULL;
-}
-
static inline int ll_new_hw_segment(struct request_queue *q,
struct request *req,
struct bio *bio)
@@ -659,31 +652,32 @@ static void blk_account_io_merge(struct request *req)
}
/*
- * Has to be called with the request spinlock acquired
+ * For non-mq, this has to be called with the request spinlock acquired.
+ * For mq with scheduling, the appropriate queue wide lock should be held.
*/
-static int attempt_merge(struct request_queue *q, struct request *req,
- struct request *next)
+static struct request *attempt_merge(struct request_queue *q,
+ struct request *req, struct request *next)
{
if (!rq_mergeable(req) || !rq_mergeable(next))
- return 0;
+ return NULL;
if (req_op(req) != req_op(next))
- return 0;
+ return NULL;
/*
* not contiguous
*/
if (blk_rq_pos(req) + blk_rq_sectors(req) != blk_rq_pos(next))
- return 0;
+ return NULL;
if (rq_data_dir(req) != rq_data_dir(next)
|| req->rq_disk != next->rq_disk
|| req_no_special_merge(next))
- return 0;
+ return NULL;
if (req_op(req) == REQ_OP_WRITE_SAME &&
!blk_write_same_mergeable(req->bio, next->bio))
- return 0;
+ return NULL;
/*
* If we are allowed to merge, then append bio list
@@ -692,7 +686,7 @@ static int attempt_merge(struct request_queue *q, struct request *req,
* counts here.
*/
if (!ll_merge_requests_fn(q, req, next))
- return 0;
+ return NULL;
/*
* If failfast settings disagree or any of the two is already
@@ -732,42 +726,51 @@ static int attempt_merge(struct request_queue *q, struct request *req,
if (blk_rq_cpu_valid(next))
req->cpu = next->cpu;
- /* owner-ship of bio passed from next to req */
+ /*
+ * ownership of bio passed from next to req, return 'next' for
+ * the caller to free
+ */
next->bio = NULL;
- __blk_put_request(q, next);
- return 1;
+ return next;
}
-int attempt_back_merge(struct request_queue *q, struct request *rq)
+struct request *attempt_back_merge(struct request_queue *q, struct request *rq)
{
struct request *next = elv_latter_request(q, rq);
if (next)
return attempt_merge(q, rq, next);
- return 0;
+ return NULL;
}
-int attempt_front_merge(struct request_queue *q, struct request *rq)
+struct request *attempt_front_merge(struct request_queue *q, struct request *rq)
{
struct request *prev = elv_former_request(q, rq);
if (prev)
return attempt_merge(q, prev, rq);
- return 0;
+ return NULL;
}
int blk_attempt_req_merge(struct request_queue *q, struct request *rq,
struct request *next)
{
struct elevator_queue *e = q->elevator;
+ struct request *free;
- if (e->type->ops.elevator_allow_rq_merge_fn)
- if (!e->type->ops.elevator_allow_rq_merge_fn(q, rq, next))
+ if (!e->uses_mq && e->type->ops.sq.elevator_allow_rq_merge_fn)
+ if (!e->type->ops.sq.elevator_allow_rq_merge_fn(q, rq, next))
return 0;
- return attempt_merge(q, rq, next);
+ free = attempt_merge(q, rq, next);
+ if (free) {
+ __blk_put_request(q, free);
+ return 1;
+ }
+
+ return 0;
}
bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
@@ -798,9 +801,12 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
return true;
}
-int blk_try_merge(struct request *rq, struct bio *bio)
+enum elv_merge blk_try_merge(struct request *rq, struct bio *bio)
{
- if (blk_rq_pos(rq) + blk_rq_sectors(rq) == bio->bi_iter.bi_sector)
+ if (req_op(rq) == REQ_OP_DISCARD &&
+ queue_max_discard_segments(rq->q) > 1)
+ return ELEVATOR_DISCARD_MERGE;
+ else if (blk_rq_pos(rq) + blk_rq_sectors(rq) == bio->bi_iter.bi_sector)
return ELEVATOR_BACK_MERGE;
else if (blk_rq_pos(rq) - bio_sectors(bio) == bio->bi_iter.bi_sector)
return ELEVATOR_FRONT_MERGE;
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
new file mode 100644
index 0000000..f6d9179
--- /dev/null
+++ b/block/blk-mq-debugfs.c
@@ -0,0 +1,772 @@
+/*
+ * Copyright (C) 2017 Facebook
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/blkdev.h>
+#include <linux/debugfs.h>
+
+#include <linux/blk-mq.h>
+#include "blk.h"
+#include "blk-mq.h"
+#include "blk-mq-tag.h"
+
+struct blk_mq_debugfs_attr {
+ const char *name;
+ umode_t mode;
+ const struct file_operations *fops;
+};
+
+static int blk_mq_debugfs_seq_open(struct inode *inode, struct file *file,
+ const struct seq_operations *ops)
+{
+ struct seq_file *m;
+ int ret;
+
+ ret = seq_open(file, ops);
+ if (!ret) {
+ m = file->private_data;
+ m->private = inode->i_private;
+ }
+ return ret;
+}
+
+static int hctx_state_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ seq_printf(m, "0x%lx\n", hctx->state);
+ return 0;
+}
+
+static int hctx_state_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_state_show, inode->i_private);
+}
+
+static const struct file_operations hctx_state_fops = {
+ .open = hctx_state_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_flags_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ seq_printf(m, "0x%lx\n", hctx->flags);
+ return 0;
+}
+
+static int hctx_flags_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_flags_show, inode->i_private);
+}
+
+static const struct file_operations hctx_flags_fops = {
+ .open = hctx_flags_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
+{
+ struct request *rq = list_entry_rq(v);
+
+ seq_printf(m, "%p {.cmd_flags=0x%x, .rq_flags=0x%x, .tag=%d, .internal_tag=%d}\n",
+ rq, rq->cmd_flags, (__force unsigned int)rq->rq_flags,
+ rq->tag, rq->internal_tag);
+ return 0;
+}
+
+static void *hctx_dispatch_start(struct seq_file *m, loff_t *pos)
+ __acquires(&hctx->lock)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ spin_lock(&hctx->lock);
+ return seq_list_start(&hctx->dispatch, *pos);
+}
+
+static void *hctx_dispatch_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ return seq_list_next(v, &hctx->dispatch, pos);
+}
+
+static void hctx_dispatch_stop(struct seq_file *m, void *v)
+ __releases(&hctx->lock)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ spin_unlock(&hctx->lock);
+}
+
+static const struct seq_operations hctx_dispatch_seq_ops = {
+ .start = hctx_dispatch_start,
+ .next = hctx_dispatch_next,
+ .stop = hctx_dispatch_stop,
+ .show = blk_mq_debugfs_rq_show,
+};
+
+static int hctx_dispatch_open(struct inode *inode, struct file *file)
+{
+ return blk_mq_debugfs_seq_open(inode, file, &hctx_dispatch_seq_ops);
+}
+
+static const struct file_operations hctx_dispatch_fops = {
+ .open = hctx_dispatch_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int hctx_ctx_map_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ sbitmap_bitmap_show(&hctx->ctx_map, m);
+ return 0;
+}
+
+static int hctx_ctx_map_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_ctx_map_show, inode->i_private);
+}
+
+static const struct file_operations hctx_ctx_map_fops = {
+ .open = hctx_ctx_map_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void blk_mq_debugfs_tags_show(struct seq_file *m,
+ struct blk_mq_tags *tags)
+{
+ seq_printf(m, "nr_tags=%u\n", tags->nr_tags);
+ seq_printf(m, "nr_reserved_tags=%u\n", tags->nr_reserved_tags);
+ seq_printf(m, "active_queues=%d\n",
+ atomic_read(&tags->active_queues));
+
+ seq_puts(m, "\nbitmap_tags:\n");
+ sbitmap_queue_show(&tags->bitmap_tags, m);
+
+ if (tags->nr_reserved_tags) {
+ seq_puts(m, "\nbreserved_tags:\n");
+ sbitmap_queue_show(&tags->breserved_tags, m);
+ }
+}
+
+static int hctx_tags_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+ struct request_queue *q = hctx->queue;
+ int res;
+
+ res = mutex_lock_interruptible(&q->sysfs_lock);
+ if (res)
+ goto out;
+ if (hctx->tags)
+ blk_mq_debugfs_tags_show(m, hctx->tags);
+ mutex_unlock(&q->sysfs_lock);
+
+out:
+ return res;
+}
+
+static int hctx_tags_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_tags_show, inode->i_private);
+}
+
+static const struct file_operations hctx_tags_fops = {
+ .open = hctx_tags_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_tags_bitmap_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+ struct request_queue *q = hctx->queue;
+ int res;
+
+ res = mutex_lock_interruptible(&q->sysfs_lock);
+ if (res)
+ goto out;
+ if (hctx->tags)
+ sbitmap_bitmap_show(&hctx->tags->bitmap_tags.sb, m);
+ mutex_unlock(&q->sysfs_lock);
+
+out:
+ return res;
+}
+
+static int hctx_tags_bitmap_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_tags_bitmap_show, inode->i_private);
+}
+
+static const struct file_operations hctx_tags_bitmap_fops = {
+ .open = hctx_tags_bitmap_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_sched_tags_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+ struct request_queue *q = hctx->queue;
+ int res;
+
+ res = mutex_lock_interruptible(&q->sysfs_lock);
+ if (res)
+ goto out;
+ if (hctx->sched_tags)
+ blk_mq_debugfs_tags_show(m, hctx->sched_tags);
+ mutex_unlock(&q->sysfs_lock);
+
+out:
+ return res;
+}
+
+static int hctx_sched_tags_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_sched_tags_show, inode->i_private);
+}
+
+static const struct file_operations hctx_sched_tags_fops = {
+ .open = hctx_sched_tags_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_sched_tags_bitmap_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+ struct request_queue *q = hctx->queue;
+ int res;
+
+ res = mutex_lock_interruptible(&q->sysfs_lock);
+ if (res)
+ goto out;
+ if (hctx->sched_tags)
+ sbitmap_bitmap_show(&hctx->sched_tags->bitmap_tags.sb, m);
+ mutex_unlock(&q->sysfs_lock);
+
+out:
+ return res;
+}
+
+static int hctx_sched_tags_bitmap_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_sched_tags_bitmap_show, inode->i_private);
+}
+
+static const struct file_operations hctx_sched_tags_bitmap_fops = {
+ .open = hctx_sched_tags_bitmap_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_io_poll_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ seq_printf(m, "considered=%lu\n", hctx->poll_considered);
+ seq_printf(m, "invoked=%lu\n", hctx->poll_invoked);
+ seq_printf(m, "success=%lu\n", hctx->poll_success);
+ return 0;
+}
+
+static int hctx_io_poll_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_io_poll_show, inode->i_private);
+}
+
+static ssize_t hctx_io_poll_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ hctx->poll_considered = hctx->poll_invoked = hctx->poll_success = 0;
+ return count;
+}
+
+static const struct file_operations hctx_io_poll_fops = {
+ .open = hctx_io_poll_open,
+ .read = seq_read,
+ .write = hctx_io_poll_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void print_stat(struct seq_file *m, struct blk_rq_stat *stat)
+{
+ seq_printf(m, "samples=%d, mean=%lld, min=%llu, max=%llu",
+ stat->nr_samples, stat->mean, stat->min, stat->max);
+}
+
+static int hctx_stats_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+ struct blk_rq_stat stat[2];
+
+ blk_stat_init(&stat[BLK_STAT_READ]);
+ blk_stat_init(&stat[BLK_STAT_WRITE]);
+
+ blk_hctx_stat_get(hctx, stat);
+
+ seq_puts(m, "read: ");
+ print_stat(m, &stat[BLK_STAT_READ]);
+ seq_puts(m, "\n");
+
+ seq_puts(m, "write: ");
+ print_stat(m, &stat[BLK_STAT_WRITE]);
+ seq_puts(m, "\n");
+ return 0;
+}
+
+static int hctx_stats_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_stats_show, inode->i_private);
+}
+
+static ssize_t hctx_stats_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_hw_ctx *hctx = m->private;
+ struct blk_mq_ctx *ctx;
+ int i;
+
+ hctx_for_each_ctx(hctx, ctx, i) {
+ blk_stat_init(&ctx->stat[BLK_STAT_READ]);
+ blk_stat_init(&ctx->stat[BLK_STAT_WRITE]);
+ }
+ return count;
+}
+
+static const struct file_operations hctx_stats_fops = {
+ .open = hctx_stats_open,
+ .read = seq_read,
+ .write = hctx_stats_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_dispatched_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+ int i;
+
+ seq_printf(m, "%8u\t%lu\n", 0U, hctx->dispatched[0]);
+
+ for (i = 1; i < BLK_MQ_MAX_DISPATCH_ORDER - 1; i++) {
+ unsigned int d = 1U << (i - 1);
+
+ seq_printf(m, "%8u\t%lu\n", d, hctx->dispatched[i]);
+ }
+
+ seq_printf(m, "%8u+\t%lu\n", 1U << (i - 1), hctx->dispatched[i]);
+ return 0;
+}
+
+static int hctx_dispatched_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_dispatched_show, inode->i_private);
+}
+
+static ssize_t hctx_dispatched_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_hw_ctx *hctx = m->private;
+ int i;
+
+ for (i = 0; i < BLK_MQ_MAX_DISPATCH_ORDER; i++)
+ hctx->dispatched[i] = 0;
+ return count;
+}
+
+static const struct file_operations hctx_dispatched_fops = {
+ .open = hctx_dispatched_open,
+ .read = seq_read,
+ .write = hctx_dispatched_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_queued_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ seq_printf(m, "%lu\n", hctx->queued);
+ return 0;
+}
+
+static int hctx_queued_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_queued_show, inode->i_private);
+}
+
+static ssize_t hctx_queued_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ hctx->queued = 0;
+ return count;
+}
+
+static const struct file_operations hctx_queued_fops = {
+ .open = hctx_queued_open,
+ .read = seq_read,
+ .write = hctx_queued_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_run_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ seq_printf(m, "%lu\n", hctx->run);
+ return 0;
+}
+
+static int hctx_run_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_run_show, inode->i_private);
+}
+
+static ssize_t hctx_run_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ hctx->run = 0;
+ return count;
+}
+
+static const struct file_operations hctx_run_fops = {
+ .open = hctx_run_open,
+ .read = seq_read,
+ .write = hctx_run_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int hctx_active_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_hw_ctx *hctx = m->private;
+
+ seq_printf(m, "%d\n", atomic_read(&hctx->nr_active));
+ return 0;
+}
+
+static int hctx_active_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hctx_active_show, inode->i_private);
+}
+
+static const struct file_operations hctx_active_fops = {
+ .open = hctx_active_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void *ctx_rq_list_start(struct seq_file *m, loff_t *pos)
+ __acquires(&ctx->lock)
+{
+ struct blk_mq_ctx *ctx = m->private;
+
+ spin_lock(&ctx->lock);
+ return seq_list_start(&ctx->rq_list, *pos);
+}
+
+static void *ctx_rq_list_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ struct blk_mq_ctx *ctx = m->private;
+
+ return seq_list_next(v, &ctx->rq_list, pos);
+}
+
+static void ctx_rq_list_stop(struct seq_file *m, void *v)
+ __releases(&ctx->lock)
+{
+ struct blk_mq_ctx *ctx = m->private;
+
+ spin_unlock(&ctx->lock);
+}
+
+static const struct seq_operations ctx_rq_list_seq_ops = {
+ .start = ctx_rq_list_start,
+ .next = ctx_rq_list_next,
+ .stop = ctx_rq_list_stop,
+ .show = blk_mq_debugfs_rq_show,
+};
+
+static int ctx_rq_list_open(struct inode *inode, struct file *file)
+{
+ return blk_mq_debugfs_seq_open(inode, file, &ctx_rq_list_seq_ops);
+}
+
+static const struct file_operations ctx_rq_list_fops = {
+ .open = ctx_rq_list_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int ctx_dispatched_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_ctx *ctx = m->private;
+
+ seq_printf(m, "%lu %lu\n", ctx->rq_dispatched[1], ctx->rq_dispatched[0]);
+ return 0;
+}
+
+static int ctx_dispatched_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ctx_dispatched_show, inode->i_private);
+}
+
+static ssize_t ctx_dispatched_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_ctx *ctx = m->private;
+
+ ctx->rq_dispatched[0] = ctx->rq_dispatched[1] = 0;
+ return count;
+}
+
+static const struct file_operations ctx_dispatched_fops = {
+ .open = ctx_dispatched_open,
+ .read = seq_read,
+ .write = ctx_dispatched_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int ctx_merged_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_ctx *ctx = m->private;
+
+ seq_printf(m, "%lu\n", ctx->rq_merged);
+ return 0;
+}
+
+static int ctx_merged_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ctx_merged_show, inode->i_private);
+}
+
+static ssize_t ctx_merged_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_ctx *ctx = m->private;
+
+ ctx->rq_merged = 0;
+ return count;
+}
+
+static const struct file_operations ctx_merged_fops = {
+ .open = ctx_merged_open,
+ .read = seq_read,
+ .write = ctx_merged_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int ctx_completed_show(struct seq_file *m, void *v)
+{
+ struct blk_mq_ctx *ctx = m->private;
+
+ seq_printf(m, "%lu %lu\n", ctx->rq_completed[1], ctx->rq_completed[0]);
+ return 0;
+}
+
+static int ctx_completed_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ctx_completed_show, inode->i_private);
+}
+
+static ssize_t ctx_completed_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = file->private_data;
+ struct blk_mq_ctx *ctx = m->private;
+
+ ctx->rq_completed[0] = ctx->rq_completed[1] = 0;
+ return count;
+}
+
+static const struct file_operations ctx_completed_fops = {
+ .open = ctx_completed_open,
+ .read = seq_read,
+ .write = ctx_completed_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct blk_mq_debugfs_attr blk_mq_debugfs_hctx_attrs[] = {
+ {"state", 0400, &hctx_state_fops},
+ {"flags", 0400, &hctx_flags_fops},
+ {"dispatch", 0400, &hctx_dispatch_fops},
+ {"ctx_map", 0400, &hctx_ctx_map_fops},
+ {"tags", 0400, &hctx_tags_fops},
+ {"tags_bitmap", 0400, &hctx_tags_bitmap_fops},
+ {"sched_tags", 0400, &hctx_sched_tags_fops},
+ {"sched_tags_bitmap", 0400, &hctx_sched_tags_bitmap_fops},
+ {"io_poll", 0600, &hctx_io_poll_fops},
+ {"stats", 0600, &hctx_stats_fops},
+ {"dispatched", 0600, &hctx_dispatched_fops},
+ {"queued", 0600, &hctx_queued_fops},
+ {"run", 0600, &hctx_run_fops},
+ {"active", 0400, &hctx_active_fops},
+ {},
+};
+
+static const struct blk_mq_debugfs_attr blk_mq_debugfs_ctx_attrs[] = {
+ {"rq_list", 0400, &ctx_rq_list_fops},
+ {"dispatched", 0600, &ctx_dispatched_fops},
+ {"merged", 0600, &ctx_merged_fops},
+ {"completed", 0600, &ctx_completed_fops},
+ {},
+};
+
+int blk_mq_debugfs_register(struct request_queue *q, const char *name)
+{
+ if (!blk_debugfs_root)
+ return -ENOENT;
+
+ q->debugfs_dir = debugfs_create_dir(name, blk_debugfs_root);
+ if (!q->debugfs_dir)
+ goto err;
+
+ if (blk_mq_debugfs_register_hctxs(q))
+ goto err;
+
+ return 0;
+
+err:
+ blk_mq_debugfs_unregister(q);
+ return -ENOMEM;
+}
+
+void blk_mq_debugfs_unregister(struct request_queue *q)
+{
+ debugfs_remove_recursive(q->debugfs_dir);
+ q->mq_debugfs_dir = NULL;
+ q->debugfs_dir = NULL;
+}
+
+static bool debugfs_create_files(struct dentry *parent, void *data,
+ const struct blk_mq_debugfs_attr *attr)
+{
+ for (; attr->name; attr++) {
+ if (!debugfs_create_file(attr->name, attr->mode, parent,
+ data, attr->fops))
+ return false;
+ }
+ return true;
+}
+
+static int blk_mq_debugfs_register_ctx(struct request_queue *q,
+ struct blk_mq_ctx *ctx,
+ struct dentry *hctx_dir)
+{
+ struct dentry *ctx_dir;
+ char name[20];
+
+ snprintf(name, sizeof(name), "cpu%u", ctx->cpu);
+ ctx_dir = debugfs_create_dir(name, hctx_dir);
+ if (!ctx_dir)
+ return -ENOMEM;
+
+ if (!debugfs_create_files(ctx_dir, ctx, blk_mq_debugfs_ctx_attrs))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int blk_mq_debugfs_register_hctx(struct request_queue *q,
+ struct blk_mq_hw_ctx *hctx)
+{
+ struct blk_mq_ctx *ctx;
+ struct dentry *hctx_dir;
+ char name[20];
+ int i;
+
+ snprintf(name, sizeof(name), "%u", hctx->queue_num);
+ hctx_dir = debugfs_create_dir(name, q->mq_debugfs_dir);
+ if (!hctx_dir)
+ return -ENOMEM;
+
+ if (!debugfs_create_files(hctx_dir, hctx, blk_mq_debugfs_hctx_attrs))
+ return -ENOMEM;
+
+ hctx_for_each_ctx(hctx, ctx, i) {
+ if (blk_mq_debugfs_register_ctx(q, ctx, hctx_dir))
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+int blk_mq_debugfs_register_hctxs(struct request_queue *q)
+{
+ struct blk_mq_hw_ctx *hctx;
+ int i;
+
+ if (!q->debugfs_dir)
+ return -ENOENT;
+
+ q->mq_debugfs_dir = debugfs_create_dir("mq", q->debugfs_dir);
+ if (!q->mq_debugfs_dir)
+ goto err;
+
+ queue_for_each_hw_ctx(q, hctx, i) {
+ if (blk_mq_debugfs_register_hctx(q, hctx))
+ goto err;
+ }
+
+ return 0;
+
+err:
+ blk_mq_debugfs_unregister_hctxs(q);
+ return -ENOMEM;
+}
+
+void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
+{
+ debugfs_remove_recursive(q->mq_debugfs_dir);
+ q->mq_debugfs_dir = NULL;
+}
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
new file mode 100644
index 0000000..9e8d679
--- /dev/null
+++ b/block/blk-mq-sched.c
@@ -0,0 +1,515 @@
+/*
+ * blk-mq scheduling framework
+ *
+ * Copyright (C) 2016 Jens Axboe
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/blk-mq.h>
+
+#include <trace/events/block.h>
+
+#include "blk.h"
+#include "blk-mq.h"
+#include "blk-mq-sched.h"
+#include "blk-mq-tag.h"
+#include "blk-wbt.h"
+
+void blk_mq_sched_free_hctx_data(struct request_queue *q,
+ void (*exit)(struct blk_mq_hw_ctx *))
+{
+ struct blk_mq_hw_ctx *hctx;
+ int i;
+
+ queue_for_each_hw_ctx(q, hctx, i) {
+ if (exit && hctx->sched_data)
+ exit(hctx);
+ kfree(hctx->sched_data);
+ hctx->sched_data = NULL;
+ }
+}
+EXPORT_SYMBOL_GPL(blk_mq_sched_free_hctx_data);
+
+int blk_mq_sched_init_hctx_data(struct request_queue *q, size_t size,
+ int (*init)(struct blk_mq_hw_ctx *),
+ void (*exit)(struct blk_mq_hw_ctx *))
+{
+ struct blk_mq_hw_ctx *hctx;
+ int ret;
+ int i;
+
+ queue_for_each_hw_ctx(q, hctx, i) {
+ hctx->sched_data = kmalloc_node(size, GFP_KERNEL, hctx->numa_node);
+ if (!hctx->sched_data) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ if (init) {
+ ret = init(hctx);
+ if (ret) {
+ /*
+ * We don't want to give exit() a partially
+ * initialized sched_data. init() must clean up
+ * if it fails.
+ */
+ kfree(hctx->sched_data);
+ hctx->sched_data = NULL;
+ goto error;
+ }
+ }
+ }
+
+ return 0;
+error:
+ blk_mq_sched_free_hctx_data(q, exit);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(blk_mq_sched_init_hctx_data);
+
+static void __blk_mq_sched_assign_ioc(struct request_queue *q,
+ struct request *rq,
+ struct bio *bio,
+ struct io_context *ioc)
+{
+ struct io_cq *icq;
+
+ spin_lock_irq(q->queue_lock);
+ icq = ioc_lookup_icq(ioc, q);
+ spin_unlock_irq(q->queue_lock);
+
+ if (!icq) {
+ icq = ioc_create_icq(ioc, q, GFP_ATOMIC);
+ if (!icq)
+ return;
+ }
+
+ rq->elv.icq = icq;
+ if (!blk_mq_sched_get_rq_priv(q, rq, bio)) {
+ rq->rq_flags |= RQF_ELVPRIV;
+ get_io_context(icq->ioc);
+ return;
+ }
+
+ rq->elv.icq = NULL;
+}
+
+static void blk_mq_sched_assign_ioc(struct request_queue *q,
+ struct request *rq, struct bio *bio)
+{
+ struct io_context *ioc;
+
+ ioc = rq_ioc(bio);
+ if (ioc)
+ __blk_mq_sched_assign_ioc(q, rq, bio, ioc);
+}
+
+struct request *blk_mq_sched_get_request(struct request_queue *q,
+ struct bio *bio,
+ unsigned int op,
+ struct blk_mq_alloc_data *data)
+{
+ struct elevator_queue *e = q->elevator;
+ struct blk_mq_hw_ctx *hctx;
+ struct blk_mq_ctx *ctx;
+ struct request *rq;
+
+ blk_queue_enter_live(q);
+ ctx = blk_mq_get_ctx(q);
+ hctx = blk_mq_map_queue(q, ctx->cpu);
+
+ blk_mq_set_alloc_data(data, q, data->flags, ctx, hctx);
+
+ if (e) {
+ data->flags |= BLK_MQ_REQ_INTERNAL;
+
+ /*
+ * Flush requests are special and go directly to the
+ * dispatch list.
+ */
+ if (!op_is_flush(op) && e->type->ops.mq.get_request) {
+ rq = e->type->ops.mq.get_request(q, op, data);
+ if (rq)
+ rq->rq_flags |= RQF_QUEUED;
+ } else
+ rq = __blk_mq_alloc_request(data, op);
+ } else {
+ rq = __blk_mq_alloc_request(data, op);
+ if (rq)
+ data->hctx->tags->rqs[rq->tag] = rq;
+ }
+
+ if (rq) {
+ if (!op_is_flush(op)) {
+ rq->elv.icq = NULL;
+ if (e && e->type->icq_cache)
+ blk_mq_sched_assign_ioc(q, rq, bio);
+ }
+ data->hctx->queued++;
+ return rq;
+ }
+
+ blk_queue_exit(q);
+ return NULL;
+}
+
+void blk_mq_sched_put_request(struct request *rq)
+{
+ struct request_queue *q = rq->q;
+ struct elevator_queue *e = q->elevator;
+
+ if (rq->rq_flags & RQF_ELVPRIV) {
+ blk_mq_sched_put_rq_priv(rq->q, rq);
+ if (rq->elv.icq) {
+ put_io_context(rq->elv.icq->ioc);
+ rq->elv.icq = NULL;
+ }
+ }
+
+ if ((rq->rq_flags & RQF_QUEUED) && e && e->type->ops.mq.put_request)
+ e->type->ops.mq.put_request(rq);
+ else
+ blk_mq_finish_request(rq);
+}
+
+void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx)
+{
+ struct elevator_queue *e = hctx->queue->elevator;
+ const bool has_sched_dispatch = e && e->type->ops.mq.dispatch_request;
+ bool did_work = false;
+ LIST_HEAD(rq_list);
+
+ if (unlikely(blk_mq_hctx_stopped(hctx)))
+ return;
+
+ hctx->run++;
+
+ /*
+ * If we have previous entries on our dispatch list, grab them first for
+ * more fair dispatch.
+ */
+ if (!list_empty_careful(&hctx->dispatch)) {
+ spin_lock(&hctx->lock);
+ if (!list_empty(&hctx->dispatch))
+ list_splice_init(&hctx->dispatch, &rq_list);
+ spin_unlock(&hctx->lock);
+ }
+
+ /*
+ * Only ask the scheduler for requests, if we didn't have residual
+ * requests from the dispatch list. This is to avoid the case where
+ * we only ever dispatch a fraction of the requests available because
+ * of low device queue depth. Once we pull requests out of the IO
+ * scheduler, we can no longer merge or sort them. So it's best to
+ * leave them there for as long as we can. Mark the hw queue as
+ * needing a restart in that case.
+ */
+ if (!list_empty(&rq_list)) {
+ blk_mq_sched_mark_restart(hctx);
+ did_work = blk_mq_dispatch_rq_list(hctx, &rq_list);
+ } else if (!has_sched_dispatch) {
+ blk_mq_flush_busy_ctxs(hctx, &rq_list);
+ blk_mq_dispatch_rq_list(hctx, &rq_list);
+ }
+
+ /*
+ * We want to dispatch from the scheduler if we had no work left
+ * on the dispatch list, OR if we did have work but weren't able
+ * to make progress.
+ */
+ if (!did_work && has_sched_dispatch) {
+ do {
+ struct request *rq;
+
+ rq = e->type->ops.mq.dispatch_request(hctx);
+ if (!rq)
+ break;
+ list_add(&rq->queuelist, &rq_list);
+ } while (blk_mq_dispatch_rq_list(hctx, &rq_list));
+ }
+}
+
+void blk_mq_sched_move_to_dispatch(struct blk_mq_hw_ctx *hctx,
+ struct list_head *rq_list,
+ struct request *(*get_rq)(struct blk_mq_hw_ctx *))
+{
+ do {
+ struct request *rq;
+
+ rq = get_rq(hctx);
+ if (!rq)
+ break;
+
+ list_add_tail(&rq->queuelist, rq_list);
+ } while (1);
+}
+EXPORT_SYMBOL_GPL(blk_mq_sched_move_to_dispatch);
+
+bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
+ struct request **merged_request)
+{
+ struct request *rq;
+
+ switch (elv_merge(q, &rq, bio)) {
+ case ELEVATOR_BACK_MERGE:
+ if (!blk_mq_sched_allow_merge(q, rq, bio))
+ return false;
+ if (!bio_attempt_back_merge(q, rq, bio))
+ return false;
+ *merged_request = attempt_back_merge(q, rq);
+ if (!*merged_request)
+ elv_merged_request(q, rq, ELEVATOR_BACK_MERGE);
+ return true;
+ case ELEVATOR_FRONT_MERGE:
+ if (!blk_mq_sched_allow_merge(q, rq, bio))
+ return false;
+ if (!bio_attempt_front_merge(q, rq, bio))
+ return false;
+ *merged_request = attempt_front_merge(q, rq);
+ if (!*merged_request)
+ elv_merged_request(q, rq, ELEVATOR_FRONT_MERGE);
+ return true;
+ default:
+ return false;
+ }
+}
+EXPORT_SYMBOL_GPL(blk_mq_sched_try_merge);
+
+bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio)
+{
+ struct elevator_queue *e = q->elevator;
+
+ if (e->type->ops.mq.bio_merge) {
+ struct blk_mq_ctx *ctx = blk_mq_get_ctx(q);
+ struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, ctx->cpu);
+
+ blk_mq_put_ctx(ctx);
+ return e->type->ops.mq.bio_merge(hctx, bio);
+ }
+
+ return false;
+}
+
+bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq)
+{
+ return rq_mergeable(rq) && elv_attempt_insert_merge(q, rq);
+}
+EXPORT_SYMBOL_GPL(blk_mq_sched_try_insert_merge);
+
+void blk_mq_sched_request_inserted(struct request *rq)
+{
+ trace_block_rq_insert(rq->q, rq);
+}
+EXPORT_SYMBOL_GPL(blk_mq_sched_request_inserted);
+
+static bool blk_mq_sched_bypass_insert(struct blk_mq_hw_ctx *hctx,
+ struct request *rq)
+{
+ if (rq->tag == -1) {
+ rq->rq_flags |= RQF_SORTED;
+ return false;
+ }
+
+ /*
+ * If we already have a real request tag, send directly to
+ * the dispatch list.
+ */
+ spin_lock(&hctx->lock);
+ list_add(&rq->queuelist, &hctx->dispatch);
+ spin_unlock(&hctx->lock);
+ return true;
+}
+
+static void blk_mq_sched_restart_hctx(struct blk_mq_hw_ctx *hctx)
+{
+ if (test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state)) {
+ clear_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
+ if (blk_mq_hctx_has_pending(hctx))
+ blk_mq_run_hw_queue(hctx, true);
+ }
+}
+
+void blk_mq_sched_restart_queues(struct blk_mq_hw_ctx *hctx)
+{
+ unsigned int i;
+
+ if (!(hctx->flags & BLK_MQ_F_TAG_SHARED))
+ blk_mq_sched_restart_hctx(hctx);
+ else {
+ struct request_queue *q = hctx->queue;
+
+ if (!test_bit(QUEUE_FLAG_RESTART, &q->queue_flags))
+ return;
+
+ clear_bit(QUEUE_FLAG_RESTART, &q->queue_flags);
+
+ queue_for_each_hw_ctx(q, hctx, i)
+ blk_mq_sched_restart_hctx(hctx);
+ }
+}
+
+/*
+ * Add flush/fua to the queue. If we fail getting a driver tag, then
+ * punt to the requeue list. Requeue will re-invoke us from a context
+ * that's safe to block from.
+ */
+static void blk_mq_sched_insert_flush(struct blk_mq_hw_ctx *hctx,
+ struct request *rq, bool can_block)
+{
+ if (blk_mq_get_driver_tag(rq, &hctx, can_block)) {
+ blk_insert_flush(rq);
+ blk_mq_run_hw_queue(hctx, true);
+ } else
+ blk_mq_add_to_requeue_list(rq, false, true);
+}
+
+void blk_mq_sched_insert_request(struct request *rq, bool at_head,
+ bool run_queue, bool async, bool can_block)
+{
+ struct request_queue *q = rq->q;
+ struct elevator_queue *e = q->elevator;
+ struct blk_mq_ctx *ctx = rq->mq_ctx;
+ struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, ctx->cpu);
+
+ if (rq->tag == -1 && op_is_flush(rq->cmd_flags)) {
+ blk_mq_sched_insert_flush(hctx, rq, can_block);
+ return;
+ }
+
+ if (e && blk_mq_sched_bypass_insert(hctx, rq))
+ goto run;
+
+ if (e && e->type->ops.mq.insert_requests) {
+ LIST_HEAD(list);
+
+ list_add(&rq->queuelist, &list);
+ e->type->ops.mq.insert_requests(hctx, &list, at_head);
+ } else {
+ spin_lock(&ctx->lock);
+ __blk_mq_insert_request(hctx, rq, at_head);
+ spin_unlock(&ctx->lock);
+ }
+
+run:
+ if (run_queue)
+ blk_mq_run_hw_queue(hctx, async);
+}
+
+void blk_mq_sched_insert_requests(struct request_queue *q,
+ struct blk_mq_ctx *ctx,
+ struct list_head *list, bool run_queue_async)
+{
+ struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, ctx->cpu);
+ struct elevator_queue *e = hctx->queue->elevator;
+
+ if (e) {
+ struct request *rq, *next;
+
+ /*
+ * We bypass requests that already have a driver tag assigned,
+ * which should only be flushes. Flushes are only ever inserted
+ * as single requests, so we shouldn't ever hit the
+ * WARN_ON_ONCE() below (but let's handle it just in case).
+ */
+ list_for_each_entry_safe(rq, next, list, queuelist) {
+ if (WARN_ON_ONCE(rq->tag != -1)) {
+ list_del_init(&rq->queuelist);
+ blk_mq_sched_bypass_insert(hctx, rq);
+ }
+ }
+ }
+
+ if (e && e->type->ops.mq.insert_requests)
+ e->type->ops.mq.insert_requests(hctx, list, false);
+ else
+ blk_mq_insert_requests(hctx, ctx, list);
+
+ blk_mq_run_hw_queue(hctx, run_queue_async);
+}
+
+static void blk_mq_sched_free_tags(struct blk_mq_tag_set *set,
+ struct blk_mq_hw_ctx *hctx,
+ unsigned int hctx_idx)
+{
+ if (hctx->sched_tags) {
+ blk_mq_free_rqs(set, hctx->sched_tags, hctx_idx);
+ blk_mq_free_rq_map(hctx->sched_tags);
+ hctx->sched_tags = NULL;
+ }
+}
+
+int blk_mq_sched_setup(struct request_queue *q)
+{
+ struct blk_mq_tag_set *set = q->tag_set;
+ struct blk_mq_hw_ctx *hctx;
+ int ret, i;
+
+ /*
+ * Default to 256, since we don't split into sync/async like the
+ * old code did. Additionally, this is a per-hw queue depth.
+ */
+ q->nr_requests = 2 * BLKDEV_MAX_RQ;
+
+ /*
+ * We're switching to using an IO scheduler, so setup the hctx
+ * scheduler tags and switch the request map from the regular
+ * tags to scheduler tags. First allocate what we need, so we
+ * can safely fail and fallback, if needed.
+ */
+ ret = 0;
+ queue_for_each_hw_ctx(q, hctx, i) {
+ hctx->sched_tags = blk_mq_alloc_rq_map(set, i, q->nr_requests, 0);
+ if (!hctx->sched_tags) {
+ ret = -ENOMEM;
+ break;
+ }
+ ret = blk_mq_alloc_rqs(set, hctx->sched_tags, i, q->nr_requests);
+ if (ret)
+ break;
+ }
+
+ /*
+ * If we failed, free what we did allocate
+ */
+ if (ret) {
+ queue_for_each_hw_ctx(q, hctx, i) {
+ if (!hctx->sched_tags)
+ continue;
+ blk_mq_sched_free_tags(set, hctx, i);
+ }
+
+ return ret;
+ }
+
+ return 0;
+}
+
+void blk_mq_sched_teardown(struct request_queue *q)
+{
+ struct blk_mq_tag_set *set = q->tag_set;
+ struct blk_mq_hw_ctx *hctx;
+ int i;
+
+ queue_for_each_hw_ctx(q, hctx, i)
+ blk_mq_sched_free_tags(set, hctx, i);
+}
+
+int blk_mq_sched_init(struct request_queue *q)
+{
+ int ret;
+
+#if defined(CONFIG_DEFAULT_SQ_NONE)
+ if (q->nr_hw_queues == 1)
+ return 0;
+#endif
+#if defined(CONFIG_DEFAULT_MQ_NONE)
+ if (q->nr_hw_queues > 1)
+ return 0;
+#endif
+
+ mutex_lock(&q->sysfs_lock);
+ ret = elevator_init(q, NULL);
+ mutex_unlock(&q->sysfs_lock);
+
+ return ret;
+}
diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h
new file mode 100644
index 0000000..7b5f3b9
--- /dev/null
+++ b/block/blk-mq-sched.h
@@ -0,0 +1,143 @@
+#ifndef BLK_MQ_SCHED_H
+#define BLK_MQ_SCHED_H
+
+#include "blk-mq.h"
+#include "blk-mq-tag.h"
+
+int blk_mq_sched_init_hctx_data(struct request_queue *q, size_t size,
+ int (*init)(struct blk_mq_hw_ctx *),
+ void (*exit)(struct blk_mq_hw_ctx *));
+
+void blk_mq_sched_free_hctx_data(struct request_queue *q,
+ void (*exit)(struct blk_mq_hw_ctx *));
+
+struct request *blk_mq_sched_get_request(struct request_queue *q, struct bio *bio, unsigned int op, struct blk_mq_alloc_data *data);
+void blk_mq_sched_put_request(struct request *rq);
+
+void blk_mq_sched_request_inserted(struct request *rq);
+bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
+ struct request **merged_request);
+bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio);
+bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq);
+void blk_mq_sched_restart_queues(struct blk_mq_hw_ctx *hctx);
+
+void blk_mq_sched_insert_request(struct request *rq, bool at_head,
+ bool run_queue, bool async, bool can_block);
+void blk_mq_sched_insert_requests(struct request_queue *q,
+ struct blk_mq_ctx *ctx,
+ struct list_head *list, bool run_queue_async);
+
+void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
+void blk_mq_sched_move_to_dispatch(struct blk_mq_hw_ctx *hctx,
+ struct list_head *rq_list,
+ struct request *(*get_rq)(struct blk_mq_hw_ctx *));
+
+int blk_mq_sched_setup(struct request_queue *q);
+void blk_mq_sched_teardown(struct request_queue *q);
+
+int blk_mq_sched_init(struct request_queue *q);
+
+static inline bool
+blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio)
+{
+ struct elevator_queue *e = q->elevator;
+
+ if (!e || blk_queue_nomerges(q) || !bio_mergeable(bio))
+ return false;
+
+ return __blk_mq_sched_bio_merge(q, bio);
+}
+
+static inline int blk_mq_sched_get_rq_priv(struct request_queue *q,
+ struct request *rq,
+ struct bio *bio)
+{
+ struct elevator_queue *e = q->elevator;
+
+ if (e && e->type->ops.mq.get_rq_priv)
+ return e->type->ops.mq.get_rq_priv(q, rq, bio);
+
+ return 0;
+}
+
+static inline void blk_mq_sched_put_rq_priv(struct request_queue *q,
+ struct request *rq)
+{
+ struct elevator_queue *e = q->elevator;
+
+ if (e && e->type->ops.mq.put_rq_priv)
+ e->type->ops.mq.put_rq_priv(q, rq);
+}
+
+static inline bool
+blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq,
+ struct bio *bio)
+{
+ struct elevator_queue *e = q->elevator;
+
+ if (e && e->type->ops.mq.allow_merge)
+ return e->type->ops.mq.allow_merge(q, rq, bio);
+
+ return true;
+}
+
+static inline void
+blk_mq_sched_completed_request(struct blk_mq_hw_ctx *hctx, struct request *rq)
+{
+ struct elevator_queue *e = hctx->queue->elevator;
+
+ if (e && e->type->ops.mq.completed_request)
+ e->type->ops.mq.completed_request(hctx, rq);
+
+ BUG_ON(rq->internal_tag == -1);
+
+ blk_mq_put_tag(hctx, hctx->sched_tags, rq->mq_ctx, rq->internal_tag);
+}
+
+static inline void blk_mq_sched_started_request(struct request *rq)
+{
+ struct request_queue *q = rq->q;
+ struct elevator_queue *e = q->elevator;
+
+ if (e && e->type->ops.mq.started_request)
+ e->type->ops.mq.started_request(rq);
+}
+
+static inline void blk_mq_sched_requeue_request(struct request *rq)
+{
+ struct request_queue *q = rq->q;
+ struct elevator_queue *e = q->elevator;
+
+ if (e && e->type->ops.mq.requeue_request)
+ e->type->ops.mq.requeue_request(rq);
+}
+
+static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx)
+{
+ struct elevator_queue *e = hctx->queue->elevator;
+
+ if (e && e->type->ops.mq.has_work)
+ return e->type->ops.mq.has_work(hctx);
+
+ return false;
+}
+
+static inline void blk_mq_sched_mark_restart(struct blk_mq_hw_ctx *hctx)
+{
+ if (!test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state)) {
+ set_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
+ if (hctx->flags & BLK_MQ_F_TAG_SHARED) {
+ struct request_queue *q = hctx->queue;
+
+ if (!test_bit(QUEUE_FLAG_RESTART, &q->queue_flags))
+ set_bit(QUEUE_FLAG_RESTART, &q->queue_flags);
+ }
+ }
+}
+
+static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx)
+{
+ return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
+}
+
+#endif
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
index eacd3af..295e696 100644
--- a/block/blk-mq-sysfs.c
+++ b/block/blk-mq-sysfs.c
@@ -122,123 +122,16 @@ static ssize_t blk_mq_hw_sysfs_store(struct kobject *kobj,
return res;
}
-static ssize_t blk_mq_sysfs_dispatched_show(struct blk_mq_ctx *ctx, char *page)
-{
- return sprintf(page, "%lu %lu\n", ctx->rq_dispatched[1],
- ctx->rq_dispatched[0]);
-}
-
-static ssize_t blk_mq_sysfs_merged_show(struct blk_mq_ctx *ctx, char *page)
-{
- return sprintf(page, "%lu\n", ctx->rq_merged);
-}
-
-static ssize_t blk_mq_sysfs_completed_show(struct blk_mq_ctx *ctx, char *page)
-{
- return sprintf(page, "%lu %lu\n", ctx->rq_completed[1],
- ctx->rq_completed[0]);
-}
-
-static ssize_t sysfs_list_show(char *page, struct list_head *list, char *msg)
-{
- struct request *rq;
- int len = snprintf(page, PAGE_SIZE - 1, "%s:\n", msg);
-
- list_for_each_entry(rq, list, queuelist) {
- const int rq_len = 2 * sizeof(rq) + 2;
-
- /* if the output will be truncated */
- if (PAGE_SIZE - 1 < len + rq_len) {
- /* backspacing if it can't hold '\t...\n' */
- if (PAGE_SIZE - 1 < len + 5)
- len -= rq_len;
- len += snprintf(page + len, PAGE_SIZE - 1 - len,
- "\t...\n");
- break;
- }
- len += snprintf(page + len, PAGE_SIZE - 1 - len,
- "\t%p\n", rq);
- }
-
- return len;
-}
-
-static ssize_t blk_mq_sysfs_rq_list_show(struct blk_mq_ctx *ctx, char *page)
-{
- ssize_t ret;
-
- spin_lock(&ctx->lock);
- ret = sysfs_list_show(page, &ctx->rq_list, "CTX pending");
- spin_unlock(&ctx->lock);
-
- return ret;
-}
-
-static ssize_t blk_mq_hw_sysfs_poll_show(struct blk_mq_hw_ctx *hctx, char *page)
-{
- return sprintf(page, "considered=%lu, invoked=%lu, success=%lu\n",
- hctx->poll_considered, hctx->poll_invoked,
- hctx->poll_success);
-}
-
-static ssize_t blk_mq_hw_sysfs_poll_store(struct blk_mq_hw_ctx *hctx,
- const char *page, size_t size)
-{
- hctx->poll_considered = hctx->poll_invoked = hctx->poll_success = 0;
-
- return size;
-}
-
-static ssize_t blk_mq_hw_sysfs_queued_show(struct blk_mq_hw_ctx *hctx,
- char *page)
-{
- return sprintf(page, "%lu\n", hctx->queued);
-}
-
-static ssize_t blk_mq_hw_sysfs_run_show(struct blk_mq_hw_ctx *hctx, char *page)
-{
- return sprintf(page, "%lu\n", hctx->run);
-}
-
-static ssize_t blk_mq_hw_sysfs_dispatched_show(struct blk_mq_hw_ctx *hctx,
- char *page)
-{
- char *start_page = page;
- int i;
-
- page += sprintf(page, "%8u\t%lu\n", 0U, hctx->dispatched[0]);
-
- for (i = 1; i < BLK_MQ_MAX_DISPATCH_ORDER - 1; i++) {
- unsigned int d = 1U << (i - 1);
-
- page += sprintf(page, "%8u\t%lu\n", d, hctx->dispatched[i]);
- }
-
- page += sprintf(page, "%8u+\t%lu\n", 1U << (i - 1),
- hctx->dispatched[i]);
- return page - start_page;
-}
-
-static ssize_t blk_mq_hw_sysfs_rq_list_show(struct blk_mq_hw_ctx *hctx,
+static ssize_t blk_mq_hw_sysfs_nr_tags_show(struct blk_mq_hw_ctx *hctx,
char *page)
{
- ssize_t ret;
-
- spin_lock(&hctx->lock);
- ret = sysfs_list_show(page, &hctx->dispatch, "HCTX pending");
- spin_unlock(&hctx->lock);
-
- return ret;
+ return sprintf(page, "%u\n", hctx->tags->nr_tags);
}
-static ssize_t blk_mq_hw_sysfs_tags_show(struct blk_mq_hw_ctx *hctx, char *page)
+static ssize_t blk_mq_hw_sysfs_nr_reserved_tags_show(struct blk_mq_hw_ctx *hctx,
+ char *page)
{
- return blk_mq_tag_sysfs_show(hctx->tags, page);
-}
-
-static ssize_t blk_mq_hw_sysfs_active_show(struct blk_mq_hw_ctx *hctx, char *page)
-{
- return sprintf(page, "%u\n", atomic_read(&hctx->nr_active));
+ return sprintf(page, "%u\n", hctx->tags->nr_reserved_tags);
}
static ssize_t blk_mq_hw_sysfs_cpus_show(struct blk_mq_hw_ctx *hctx, char *page)
@@ -259,121 +152,27 @@ static ssize_t blk_mq_hw_sysfs_cpus_show(struct blk_mq_hw_ctx *hctx, char *page)
return ret;
}
-static void blk_mq_stat_clear(struct blk_mq_hw_ctx *hctx)
-{
- struct blk_mq_ctx *ctx;
- unsigned int i;
-
- hctx_for_each_ctx(hctx, ctx, i) {
- blk_stat_init(&ctx->stat[BLK_STAT_READ]);
- blk_stat_init(&ctx->stat[BLK_STAT_WRITE]);
- }
-}
-
-static ssize_t blk_mq_hw_sysfs_stat_store(struct blk_mq_hw_ctx *hctx,
- const char *page, size_t count)
-{
- blk_mq_stat_clear(hctx);
- return count;
-}
-
-static ssize_t print_stat(char *page, struct blk_rq_stat *stat, const char *pre)
-{
- return sprintf(page, "%s samples=%llu, mean=%lld, min=%lld, max=%lld\n",
- pre, (long long) stat->nr_samples,
- (long long) stat->mean, (long long) stat->min,
- (long long) stat->max);
-}
-
-static ssize_t blk_mq_hw_sysfs_stat_show(struct blk_mq_hw_ctx *hctx, char *page)
-{
- struct blk_rq_stat stat[2];
- ssize_t ret;
-
- blk_stat_init(&stat[BLK_STAT_READ]);
- blk_stat_init(&stat[BLK_STAT_WRITE]);
-
- blk_hctx_stat_get(hctx, stat);
-
- ret = print_stat(page, &stat[BLK_STAT_READ], "read :");
- ret += print_stat(page + ret, &stat[BLK_STAT_WRITE], "write:");
- return ret;
-}
-
-static struct blk_mq_ctx_sysfs_entry blk_mq_sysfs_dispatched = {
- .attr = {.name = "dispatched", .mode = S_IRUGO },
- .show = blk_mq_sysfs_dispatched_show,
-};
-static struct blk_mq_ctx_sysfs_entry blk_mq_sysfs_merged = {
- .attr = {.name = "merged", .mode = S_IRUGO },
- .show = blk_mq_sysfs_merged_show,
-};
-static struct blk_mq_ctx_sysfs_entry blk_mq_sysfs_completed = {
- .attr = {.name = "completed", .mode = S_IRUGO },
- .show = blk_mq_sysfs_completed_show,
-};
-static struct blk_mq_ctx_sysfs_entry blk_mq_sysfs_rq_list = {
- .attr = {.name = "rq_list", .mode = S_IRUGO },
- .show = blk_mq_sysfs_rq_list_show,
-};
-
static struct attribute *default_ctx_attrs[] = {
- &blk_mq_sysfs_dispatched.attr,
- &blk_mq_sysfs_merged.attr,
- &blk_mq_sysfs_completed.attr,
- &blk_mq_sysfs_rq_list.attr,
NULL,
};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_queued = {
- .attr = {.name = "queued", .mode = S_IRUGO },
- .show = blk_mq_hw_sysfs_queued_show,
+static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_nr_tags = {
+ .attr = {.name = "nr_tags", .mode = S_IRUGO },
+ .show = blk_mq_hw_sysfs_nr_tags_show,
};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_run = {
- .attr = {.name = "run", .mode = S_IRUGO },
- .show = blk_mq_hw_sysfs_run_show,
-};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_dispatched = {
- .attr = {.name = "dispatched", .mode = S_IRUGO },
- .show = blk_mq_hw_sysfs_dispatched_show,
-};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_active = {
- .attr = {.name = "active", .mode = S_IRUGO },
- .show = blk_mq_hw_sysfs_active_show,
-};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_pending = {
- .attr = {.name = "pending", .mode = S_IRUGO },
- .show = blk_mq_hw_sysfs_rq_list_show,
-};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_tags = {
- .attr = {.name = "tags", .mode = S_IRUGO },
- .show = blk_mq_hw_sysfs_tags_show,
+static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_nr_reserved_tags = {
+ .attr = {.name = "nr_reserved_tags", .mode = S_IRUGO },
+ .show = blk_mq_hw_sysfs_nr_reserved_tags_show,
};
static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_cpus = {
.attr = {.name = "cpu_list", .mode = S_IRUGO },
.show = blk_mq_hw_sysfs_cpus_show,
};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_poll = {
- .attr = {.name = "io_poll", .mode = S_IWUSR | S_IRUGO },
- .show = blk_mq_hw_sysfs_poll_show,
- .store = blk_mq_hw_sysfs_poll_store,
-};
-static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_stat = {
- .attr = {.name = "stats", .mode = S_IRUGO | S_IWUSR },
- .show = blk_mq_hw_sysfs_stat_show,
- .store = blk_mq_hw_sysfs_stat_store,
-};
static struct attribute *default_hw_ctx_attrs[] = {
- &blk_mq_hw_sysfs_queued.attr,
- &blk_mq_hw_sysfs_run.attr,
- &blk_mq_hw_sysfs_dispatched.attr,
- &blk_mq_hw_sysfs_pending.attr,
- &blk_mq_hw_sysfs_tags.attr,
+ &blk_mq_hw_sysfs_nr_tags.attr,
+ &blk_mq_hw_sysfs_nr_reserved_tags.attr,
&blk_mq_hw_sysfs_cpus.attr,
- &blk_mq_hw_sysfs_active.attr,
- &blk_mq_hw_sysfs_poll.attr,
- &blk_mq_hw_sysfs_stat.attr,
NULL,
};
@@ -455,6 +254,8 @@ static void __blk_mq_unregister_dev(struct device *dev, struct request_queue *q)
kobject_put(&hctx->kobj);
}
+ blk_mq_debugfs_unregister_hctxs(q);
+
kobject_uevent(&q->mq_kobj, KOBJ_REMOVE);
kobject_del(&q->mq_kobj);
kobject_put(&q->mq_kobj);
@@ -504,6 +305,8 @@ int blk_mq_register_dev(struct device *dev, struct request_queue *q)
kobject_uevent(&q->mq_kobj, KOBJ_ADD);
+ blk_mq_debugfs_register(q, kobject_name(&dev->kobj));
+
queue_for_each_hw_ctx(q, hctx, i) {
ret = blk_mq_register_hctx(hctx);
if (ret)
@@ -529,6 +332,8 @@ void blk_mq_sysfs_unregister(struct request_queue *q)
if (!q->mq_sysfs_init_done)
return;
+ blk_mq_debugfs_unregister_hctxs(q);
+
queue_for_each_hw_ctx(q, hctx, i)
blk_mq_unregister_hctx(hctx);
}
@@ -541,6 +346,8 @@ int blk_mq_sysfs_register(struct request_queue *q)
if (!q->mq_sysfs_init_done)
return ret;
+ blk_mq_debugfs_register_hctxs(q);
+
queue_for_each_hw_ctx(q, hctx, i) {
ret = blk_mq_register_hctx(hctx);
if (ret)
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index dcf5ce3..54c8436 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -90,113 +90,97 @@ static inline bool hctx_may_queue(struct blk_mq_hw_ctx *hctx,
return atomic_read(&hctx->nr_active) < depth;
}
-static int __bt_get(struct blk_mq_hw_ctx *hctx, struct sbitmap_queue *bt)
+static int __blk_mq_get_tag(struct blk_mq_alloc_data *data,
+ struct sbitmap_queue *bt)
{
- if (!hctx_may_queue(hctx, bt))
+ if (!(data->flags & BLK_MQ_REQ_INTERNAL) &&
+ !hctx_may_queue(data->hctx, bt))
return -1;
return __sbitmap_queue_get(bt);
}
-static int bt_get(struct blk_mq_alloc_data *data, struct sbitmap_queue *bt,
- struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags)
+unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data)
{
+ struct blk_mq_tags *tags = blk_mq_tags_from_data(data);
+ struct sbitmap_queue *bt;
struct sbq_wait_state *ws;
DEFINE_WAIT(wait);
+ unsigned int tag_offset;
+ bool drop_ctx;
int tag;
- tag = __bt_get(hctx, bt);
+ if (data->flags & BLK_MQ_REQ_RESERVED) {
+ if (unlikely(!tags->nr_reserved_tags)) {
+ WARN_ON_ONCE(1);
+ return BLK_MQ_TAG_FAIL;
+ }
+ bt = &tags->breserved_tags;
+ tag_offset = 0;
+ } else {
+ bt = &tags->bitmap_tags;
+ tag_offset = tags->nr_reserved_tags;
+ }
+
+ tag = __blk_mq_get_tag(data, bt);
if (tag != -1)
- return tag;
+ goto found_tag;
if (data->flags & BLK_MQ_REQ_NOWAIT)
- return -1;
+ return BLK_MQ_TAG_FAIL;
- ws = bt_wait_ptr(bt, hctx);
+ ws = bt_wait_ptr(bt, data->hctx);
+ drop_ctx = data->ctx == NULL;
do {
prepare_to_wait(&ws->wait, &wait, TASK_UNINTERRUPTIBLE);
- tag = __bt_get(hctx, bt);
+ tag = __blk_mq_get_tag(data, bt);
if (tag != -1)
break;
/*
* We're out of tags on this hardware queue, kick any
* pending IO submits before going to sleep waiting for
- * some to complete. Note that hctx can be NULL here for
- * reserved tag allocation.
+ * some to complete.
*/
- if (hctx)
- blk_mq_run_hw_queue(hctx, false);
+ blk_mq_run_hw_queue(data->hctx, false);
/*
* Retry tag allocation after running the hardware queue,
* as running the queue may also have found completions.
*/
- tag = __bt_get(hctx, bt);
+ tag = __blk_mq_get_tag(data, bt);
if (tag != -1)
break;
- blk_mq_put_ctx(data->ctx);
+ if (data->ctx)
+ blk_mq_put_ctx(data->ctx);
io_schedule();
data->ctx = blk_mq_get_ctx(data->q);
data->hctx = blk_mq_map_queue(data->q, data->ctx->cpu);
- if (data->flags & BLK_MQ_REQ_RESERVED) {
- bt = &data->hctx->tags->breserved_tags;
- } else {
- hctx = data->hctx;
- bt = &hctx->tags->bitmap_tags;
- }
+ tags = blk_mq_tags_from_data(data);
+ if (data->flags & BLK_MQ_REQ_RESERVED)
+ bt = &tags->breserved_tags;
+ else
+ bt = &tags->bitmap_tags;
+
finish_wait(&ws->wait, &wait);
- ws = bt_wait_ptr(bt, hctx);
+ ws = bt_wait_ptr(bt, data->hctx);
} while (1);
- finish_wait(&ws->wait, &wait);
- return tag;
-}
-
-static unsigned int __blk_mq_get_tag(struct blk_mq_alloc_data *data)
-{
- int tag;
-
- tag = bt_get(data, &data->hctx->tags->bitmap_tags, data->hctx,
- data->hctx->tags);
- if (tag >= 0)
- return tag + data->hctx->tags->nr_reserved_tags;
-
- return BLK_MQ_TAG_FAIL;
-}
-
-static unsigned int __blk_mq_get_reserved_tag(struct blk_mq_alloc_data *data)
-{
- int tag;
-
- if (unlikely(!data->hctx->tags->nr_reserved_tags)) {
- WARN_ON_ONCE(1);
- return BLK_MQ_TAG_FAIL;
- }
-
- tag = bt_get(data, &data->hctx->tags->breserved_tags, NULL,
- data->hctx->tags);
- if (tag < 0)
- return BLK_MQ_TAG_FAIL;
+ if (drop_ctx && data->ctx)
+ blk_mq_put_ctx(data->ctx);
- return tag;
-}
+ finish_wait(&ws->wait, &wait);
-unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data)
-{
- if (data->flags & BLK_MQ_REQ_RESERVED)
- return __blk_mq_get_reserved_tag(data);
- return __blk_mq_get_tag(data);
+found_tag:
+ return tag + tag_offset;
}
-void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
- unsigned int tag)
+void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags,
+ struct blk_mq_ctx *ctx, unsigned int tag)
{
- struct blk_mq_tags *tags = hctx->tags;
-
if (tag >= tags->nr_reserved_tags) {
const int real_tag = tag - tags->nr_reserved_tags;
@@ -312,11 +296,11 @@ int blk_mq_reinit_tagset(struct blk_mq_tag_set *set)
struct blk_mq_tags *tags = set->tags[i];
for (j = 0; j < tags->nr_tags; j++) {
- if (!tags->rqs[j])
+ if (!tags->static_rqs[j])
continue;
ret = set->ops->reinit_request(set->driver_data,
- tags->rqs[j]);
+ tags->static_rqs[j]);
if (ret)
goto out;
}
@@ -351,11 +335,6 @@ void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn,
}
-static unsigned int bt_unused_tags(const struct sbitmap_queue *bt)
-{
- return bt->sb.depth - sbitmap_weight(&bt->sb);
-}
-
static int bt_alloc(struct sbitmap_queue *bt, unsigned int depth,
bool round_robin, int node)
{
@@ -411,19 +390,56 @@ void blk_mq_free_tags(struct blk_mq_tags *tags)
kfree(tags);
}
-int blk_mq_tag_update_depth(struct blk_mq_tags *tags, unsigned int tdepth)
+int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx,
+ struct blk_mq_tags **tagsptr, unsigned int tdepth,
+ bool can_grow)
{
- tdepth -= tags->nr_reserved_tags;
- if (tdepth > tags->nr_tags)
+ struct blk_mq_tags *tags = *tagsptr;
+
+ if (tdepth <= tags->nr_reserved_tags)
return -EINVAL;
+ tdepth -= tags->nr_reserved_tags;
+
/*
- * Don't need (or can't) update reserved tags here, they remain
- * static and should never need resizing.
+ * If we are allowed to grow beyond the original size, allocate
+ * a new set of tags before freeing the old one.
*/
- sbitmap_queue_resize(&tags->bitmap_tags, tdepth);
+ if (tdepth > tags->nr_tags) {
+ struct blk_mq_tag_set *set = hctx->queue->tag_set;
+ struct blk_mq_tags *new;
+ bool ret;
+
+ if (!can_grow)
+ return -EINVAL;
+
+ /*
+ * We need some sort of upper limit, set it high enough that
+ * no valid use cases should require more.
+ */
+ if (tdepth > 16 * BLKDEV_MAX_RQ)
+ return -EINVAL;
+
+ new = blk_mq_alloc_rq_map(set, hctx->queue_num, tdepth, 0);
+ if (!new)
+ return -ENOMEM;
+ ret = blk_mq_alloc_rqs(set, new, hctx->queue_num, tdepth);
+ if (ret) {
+ blk_mq_free_rq_map(new);
+ return -ENOMEM;
+ }
+
+ blk_mq_free_rqs(set, *tagsptr, hctx->queue_num);
+ blk_mq_free_rq_map(*tagsptr);
+ *tagsptr = new;
+ } else {
+ /*
+ * Don't need (or can't) update reserved tags here, they
+ * remain static and should never need resizing.
+ */
+ sbitmap_queue_resize(&tags->bitmap_tags, tdepth);
+ }
- blk_mq_tag_wakeup_all(tags, false);
return 0;
}
@@ -454,25 +470,3 @@ u32 blk_mq_unique_tag(struct request *rq)
(rq->tag & BLK_MQ_UNIQUE_TAG_MASK);
}
EXPORT_SYMBOL(blk_mq_unique_tag);
-
-ssize_t blk_mq_tag_sysfs_show(struct blk_mq_tags *tags, char *page)
-{
- char *orig_page = page;
- unsigned int free, res;
-
- if (!tags)
- return 0;
-
- page += sprintf(page, "nr_tags=%u, reserved_tags=%u, "
- "bits_per_word=%u\n",
- tags->nr_tags, tags->nr_reserved_tags,
- 1U << tags->bitmap_tags.sb.shift);
-
- free = bt_unused_tags(&tags->bitmap_tags);
- res = bt_unused_tags(&tags->breserved_tags);
-
- page += sprintf(page, "nr_free=%u, nr_reserved=%u\n", free, res);
- page += sprintf(page, "active_queues=%u\n", atomic_read(&tags->active_queues));
-
- return page - orig_page;
-}
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h
index d166273..6349742 100644
--- a/block/blk-mq-tag.h
+++ b/block/blk-mq-tag.h
@@ -16,6 +16,7 @@ struct blk_mq_tags {
struct sbitmap_queue breserved_tags;
struct request **rqs;
+ struct request **static_rqs;
struct list_head page_list;
};
@@ -24,11 +25,12 @@ extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, unsigned int r
extern void blk_mq_free_tags(struct blk_mq_tags *tags);
extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data);
-extern void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
- unsigned int tag);
+extern void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags,
+ struct blk_mq_ctx *ctx, unsigned int tag);
extern bool blk_mq_has_free_tags(struct blk_mq_tags *tags);
-extern ssize_t blk_mq_tag_sysfs_show(struct blk_mq_tags *tags, char *page);
-extern int blk_mq_tag_update_depth(struct blk_mq_tags *tags, unsigned int depth);
+extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx,
+ struct blk_mq_tags **tags,
+ unsigned int depth, bool can_grow);
extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool);
void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn,
void *priv);
diff --git a/block/blk-mq.c b/block/blk-mq.c
index c3400b5..b29e7dc 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -32,6 +32,7 @@
#include "blk-mq-tag.h"
#include "blk-stat.h"
#include "blk-wbt.h"
+#include "blk-mq-sched.h"
static DEFINE_MUTEX(all_q_mutex);
static LIST_HEAD(all_q_list);
@@ -39,9 +40,11 @@ static LIST_HEAD(all_q_list);
/*
* Check if any of the ctx's have pending work in this hardware queue
*/
-static bool blk_mq_hctx_has_pending(struct blk_mq_hw_ctx *hctx)
+bool blk_mq_hctx_has_pending(struct blk_mq_hw_ctx *hctx)
{
- return sbitmap_any_bit_set(&hctx->ctx_map);
+ return sbitmap_any_bit_set(&hctx->ctx_map) ||
+ !list_empty_careful(&hctx->dispatch) ||
+ blk_mq_sched_has_work(hctx);
}
/*
@@ -167,8 +170,8 @@ bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
}
EXPORT_SYMBOL(blk_mq_can_queue);
-static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
- struct request *rq, unsigned int op)
+void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
+ struct request *rq, unsigned int op)
{
INIT_LIST_HEAD(&rq->queuelist);
/* csd/requeue_work/fifo_time is initialized before use */
@@ -196,13 +199,7 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
rq->special = NULL;
/* tag was already set */
rq->errors = 0;
-
- rq->cmd = rq->__cmd;
-
rq->extra_len = 0;
- rq->sense_len = 0;
- rq->resid_len = 0;
- rq->sense = NULL;
INIT_LIST_HEAD(&rq->timeout_list);
rq->timeout = 0;
@@ -213,53 +210,58 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
ctx->rq_dispatched[op_is_sync(op)]++;
}
+EXPORT_SYMBOL_GPL(blk_mq_rq_ctx_init);
-static struct request *
-__blk_mq_alloc_request(struct blk_mq_alloc_data *data, unsigned int op)
+struct request *__blk_mq_alloc_request(struct blk_mq_alloc_data *data,
+ unsigned int op)
{
struct request *rq;
unsigned int tag;
tag = blk_mq_get_tag(data);
if (tag != BLK_MQ_TAG_FAIL) {
- rq = data->hctx->tags->rqs[tag];
+ struct blk_mq_tags *tags = blk_mq_tags_from_data(data);
- if (blk_mq_tag_busy(data->hctx)) {
- rq->rq_flags = RQF_MQ_INFLIGHT;
- atomic_inc(&data->hctx->nr_active);
+ rq = tags->static_rqs[tag];
+
+ if (data->flags & BLK_MQ_REQ_INTERNAL) {
+ rq->tag = -1;
+ rq->internal_tag = tag;
+ } else {
+ if (blk_mq_tag_busy(data->hctx)) {
+ rq->rq_flags = RQF_MQ_INFLIGHT;
+ atomic_inc(&data->hctx->nr_active);
+ }
+ rq->tag = tag;
+ rq->internal_tag = -1;
}
- rq->tag = tag;
blk_mq_rq_ctx_init(data->q, data->ctx, rq, op);
return rq;
}
return NULL;
}
+EXPORT_SYMBOL_GPL(__blk_mq_alloc_request);
struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
unsigned int flags)
{
- struct blk_mq_ctx *ctx;
- struct blk_mq_hw_ctx *hctx;
+ struct blk_mq_alloc_data alloc_data = { .flags = flags };
struct request *rq;
- struct blk_mq_alloc_data alloc_data;
int ret;
ret = blk_queue_enter(q, flags & BLK_MQ_REQ_NOWAIT);
if (ret)
return ERR_PTR(ret);
- ctx = blk_mq_get_ctx(q);
- hctx = blk_mq_map_queue(q, ctx->cpu);
- blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
- blk_mq_put_ctx(ctx);
+ rq = blk_mq_sched_get_request(q, NULL, rw, &alloc_data);
- if (!rq) {
- blk_queue_exit(q);
+ blk_mq_put_ctx(alloc_data.ctx);
+ blk_queue_exit(q);
+
+ if (!rq)
return ERR_PTR(-EWOULDBLOCK);
- }
rq->__data_len = 0;
rq->__sector = (sector_t) -1;
@@ -319,10 +321,10 @@ out_queue_exit:
}
EXPORT_SYMBOL_GPL(blk_mq_alloc_request_hctx);
-static void __blk_mq_free_request(struct blk_mq_hw_ctx *hctx,
- struct blk_mq_ctx *ctx, struct request *rq)
+void __blk_mq_finish_request(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
+ struct request *rq)
{
- const int tag = rq->tag;
+ const int sched_tag = rq->internal_tag;
struct request_queue *q = rq->q;
if (rq->rq_flags & RQF_MQ_INFLIGHT)
@@ -333,23 +335,31 @@ static void __blk_mq_free_request(struct blk_mq_hw_ctx *hctx,
clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags);
clear_bit(REQ_ATOM_POLL_SLEPT, &rq->atomic_flags);
- blk_mq_put_tag(hctx, ctx, tag);
+ if (rq->tag != -1)
+ blk_mq_put_tag(hctx, hctx->tags, ctx, rq->tag);
+ if (sched_tag != -1)
+ blk_mq_sched_completed_request(hctx, rq);
+ blk_mq_sched_restart_queues(hctx);
blk_queue_exit(q);
}
-void blk_mq_free_hctx_request(struct blk_mq_hw_ctx *hctx, struct request *rq)
+static void blk_mq_finish_hctx_request(struct blk_mq_hw_ctx *hctx,
+ struct request *rq)
{
struct blk_mq_ctx *ctx = rq->mq_ctx;
ctx->rq_completed[rq_is_sync(rq)]++;
- __blk_mq_free_request(hctx, ctx, rq);
+ __blk_mq_finish_request(hctx, ctx, rq);
+}
+void blk_mq_finish_request(struct request *rq)
+{
+ blk_mq_finish_hctx_request(blk_mq_map_queue(rq->q, rq->mq_ctx->cpu), rq);
}
-EXPORT_SYMBOL_GPL(blk_mq_free_hctx_request);
void blk_mq_free_request(struct request *rq)
{
- blk_mq_free_hctx_request(blk_mq_map_queue(rq->q, rq->mq_ctx->cpu), rq);
+ blk_mq_sched_put_request(rq);
}
EXPORT_SYMBOL_GPL(blk_mq_free_request);
@@ -467,11 +477,9 @@ void blk_mq_start_request(struct request *rq)
{
struct request_queue *q = rq->q;
- trace_block_rq_issue(q, rq);
+ blk_mq_sched_started_request(rq);
- rq->resid_len = blk_rq_bytes(rq);
- if (unlikely(blk_bidi_rq(rq)))
- rq->next_rq->resid_len = blk_rq_bytes(rq->next_rq);
+ trace_block_rq_issue(q, rq);
if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags)) {
blk_stat_set_issue_time(&rq->issue_stat);
@@ -515,6 +523,7 @@ static void __blk_mq_requeue_request(struct request *rq)
trace_block_rq_requeue(q, rq);
wbt_requeue(q->rq_wb, &rq->issue_stat);
+ blk_mq_sched_requeue_request(rq);
if (test_and_clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags)) {
if (q->dma_drain_size && blk_rq_bytes(rq))
@@ -549,13 +558,13 @@ static void blk_mq_requeue_work(struct work_struct *work)
rq->rq_flags &= ~RQF_SOFTBARRIER;
list_del_init(&rq->queuelist);
- blk_mq_insert_request(rq, true, false, false);
+ blk_mq_sched_insert_request(rq, true, false, false, true);
}
while (!list_empty(&rq_list)) {
rq = list_entry(rq_list.next, struct request, queuelist);
list_del_init(&rq->queuelist);
- blk_mq_insert_request(rq, false, false, false);
+ blk_mq_sched_insert_request(rq, false, false, false, true);
}
blk_mq_run_hw_queues(q, false);
@@ -639,7 +648,7 @@ struct blk_mq_timeout_data {
void blk_mq_rq_timed_out(struct request *req, bool reserved)
{
- struct blk_mq_ops *ops = req->q->mq_ops;
+ const struct blk_mq_ops *ops = req->q->mq_ops;
enum blk_eh_timer_return ret = BLK_EH_RESET_TIMER;
/*
@@ -754,7 +763,7 @@ static bool blk_mq_attempt_merge(struct request_queue *q,
int checked = 8;
list_for_each_entry_reverse(rq, &ctx->rq_list, queuelist) {
- int el_ret;
+ bool merged = false;
if (!checked--)
break;
@@ -762,20 +771,25 @@ static bool blk_mq_attempt_merge(struct request_queue *q,
if (!blk_rq_merge_ok(rq, bio))
continue;
- el_ret = blk_try_merge(rq, bio);
- if (el_ret == ELEVATOR_BACK_MERGE) {
- if (bio_attempt_back_merge(q, rq, bio)) {
- ctx->rq_merged++;
- return true;
- }
+ switch (blk_try_merge(rq, bio)) {
+ case ELEVATOR_BACK_MERGE:
+ if (blk_mq_sched_allow_merge(q, rq, bio))
+ merged = bio_attempt_back_merge(q, rq, bio);
break;
- } else if (el_ret == ELEVATOR_FRONT_MERGE) {
- if (bio_attempt_front_merge(q, rq, bio)) {
- ctx->rq_merged++;
- return true;
- }
+ case ELEVATOR_FRONT_MERGE:
+ if (blk_mq_sched_allow_merge(q, rq, bio))
+ merged = bio_attempt_front_merge(q, rq, bio);
+ break;
+ case ELEVATOR_DISCARD_MERGE:
+ merged = bio_attempt_discard_merge(q, rq, bio);
break;
+ default:
+ continue;
}
+
+ if (merged)
+ ctx->rq_merged++;
+ return merged;
}
return false;
@@ -803,7 +817,7 @@ static bool flush_busy_ctx(struct sbitmap *sb, unsigned int bitnr, void *data)
* Process software queues that have been marked busy, splicing them
* to the for-dispatch
*/
-static void flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list)
+void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list)
{
struct flush_busy_ctx_data data = {
.hctx = hctx,
@@ -812,6 +826,7 @@ static void flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list)
sbitmap_for_each_set(&hctx->ctx_map, flush_busy_ctx, &data);
}
+EXPORT_SYMBOL_GPL(blk_mq_flush_busy_ctxs);
static inline unsigned int queued_to_index(unsigned int queued)
{
@@ -821,6 +836,74 @@ static inline unsigned int queued_to_index(unsigned int queued)
return min(BLK_MQ_MAX_DISPATCH_ORDER - 1, ilog2(queued) + 1);
}
+bool blk_mq_get_driver_tag(struct request *rq, struct blk_mq_hw_ctx **hctx,
+ bool wait)
+{
+ struct blk_mq_alloc_data data = {
+ .q = rq->q,
+ .hctx = blk_mq_map_queue(rq->q, rq->mq_ctx->cpu),
+ .flags = wait ? 0 : BLK_MQ_REQ_NOWAIT,
+ };
+
+ if (rq->tag != -1) {
+done:
+ if (hctx)
+ *hctx = data.hctx;
+ return true;
+ }
+
+ rq->tag = blk_mq_get_tag(&data);
+ if (rq->tag >= 0) {
+ if (blk_mq_tag_busy(data.hctx)) {
+ rq->rq_flags |= RQF_MQ_INFLIGHT;
+ atomic_inc(&data.hctx->nr_active);
+ }
+ data.hctx->tags->rqs[rq->tag] = rq;
+ goto done;
+ }
+
+ return false;
+}
+
+static void blk_mq_put_driver_tag(struct blk_mq_hw_ctx *hctx,
+ struct request *rq)
+{
+ if (rq->tag == -1 || rq->internal_tag == -1)
+ return;
+
+ blk_mq_put_tag(hctx, hctx->tags, rq->mq_ctx, rq->tag);
+ rq->tag = -1;
+
+ if (rq->rq_flags & RQF_MQ_INFLIGHT) {
+ rq->rq_flags &= ~RQF_MQ_INFLIGHT;
+ atomic_dec(&hctx->nr_active);
+ }
+}
+
+/*
+ * If we fail getting a driver tag because all the driver tags are already
+ * assigned and on the dispatch list, BUT the first entry does not have a
+ * tag, then we could deadlock. For that case, move entries with assigned
+ * driver tags to the front, leaving the set of tagged requests in the
+ * same order, and the untagged set in the same order.
+ */
+static bool reorder_tags_to_front(struct list_head *list)
+{
+ struct request *rq, *tmp, *first = NULL;
+
+ list_for_each_entry_safe_reverse(rq, tmp, list, queuelist) {
+ if (rq == first)
+ break;
+ if (rq->tag != -1) {
+ list_move(&rq->queuelist, list);
+ if (!first)
+ first = rq;
+ }
+ }
+
+ return first != NULL;
+}
+
bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list)
{
struct request_queue *q = hctx->queue;
@@ -843,6 +926,20 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list)
struct blk_mq_queue_data bd;
rq = list_first_entry(list, struct request, queuelist);
+ if (!blk_mq_get_driver_tag(rq, &hctx, false)) {
+ if (!queued && reorder_tags_to_front(list))
+ continue;
+
+ /*
+ * We failed getting a driver tag. Mark the queue(s)
+ * as needing a restart. Retry getting a tag again,
+ * in case the needed IO completed right before we
+ * marked the queue as needing a restart.
+ */
+ blk_mq_sched_mark_restart(hctx);
+ if (!blk_mq_get_driver_tag(rq, &hctx, false))
+ break;
+ }
list_del_init(&rq->queuelist);
bd.rq = rq;
@@ -855,6 +952,7 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list)
queued++;
break;
case BLK_MQ_RQ_QUEUE_BUSY:
+ blk_mq_put_driver_tag(hctx, rq);
list_add(&rq->queuelist, list);
__blk_mq_requeue_request(rq);
break;
@@ -885,7 +983,7 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list)
*/
if (!list_empty(list)) {
spin_lock(&hctx->lock);
- list_splice(list, &hctx->dispatch);
+ list_splice_init(list, &hctx->dispatch);
spin_unlock(&hctx->lock);
/*
@@ -896,45 +994,15 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list)
* the requests in rq_list might get lost.
*
* blk_mq_run_hw_queue() already checks the STOPPED bit
- **/
- blk_mq_run_hw_queue(hctx, true);
- }
-
- return ret != BLK_MQ_RQ_QUEUE_BUSY;
-}
-
-/*
- * Run this hardware queue, pulling any software queues mapped to it in.
- * Note that this function currently has various problems around ordering
- * of IO. In particular, we'd like FIFO behaviour on handling existing
- * items on the hctx->dispatch list. Ignore that for now.
- */
-static void blk_mq_process_rq_list(struct blk_mq_hw_ctx *hctx)
-{
- LIST_HEAD(rq_list);
-
- if (unlikely(blk_mq_hctx_stopped(hctx)))
- return;
-
- hctx->run++;
-
- /*
- * Touch any software queue that has pending entries.
- */
- flush_busy_ctxs(hctx, &rq_list);
-
- /*
- * If we have previous entries on our dispatch list, grab them
- * and stuff them at the front for more fair dispatch.
- */
- if (!list_empty_careful(&hctx->dispatch)) {
- spin_lock(&hctx->lock);
- if (!list_empty(&hctx->dispatch))
- list_splice_init(&hctx->dispatch, &rq_list);
- spin_unlock(&hctx->lock);
+ *
+ * If RESTART is set, then let completion restart the queue
+ * instead of potentially looping here.
+ */
+ if (!blk_mq_sched_needs_restart(hctx))
+ blk_mq_run_hw_queue(hctx, true);
}
- blk_mq_dispatch_rq_list(hctx, &rq_list);
+ return queued != 0;
}
static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx)
@@ -946,11 +1014,11 @@ static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx)
if (!(hctx->flags & BLK_MQ_F_BLOCKING)) {
rcu_read_lock();
- blk_mq_process_rq_list(hctx);
+ blk_mq_sched_dispatch_requests(hctx);
rcu_read_unlock();
} else {
srcu_idx = srcu_read_lock(&hctx->queue_rq_srcu);
- blk_mq_process_rq_list(hctx);
+ blk_mq_sched_dispatch_requests(hctx);
srcu_read_unlock(&hctx->queue_rq_srcu, srcu_idx);
}
}
@@ -1006,8 +1074,7 @@ void blk_mq_run_hw_queues(struct request_queue *q, bool async)
int i;
queue_for_each_hw_ctx(q, hctx, i) {
- if ((!blk_mq_hctx_has_pending(hctx) &&
- list_empty_careful(&hctx->dispatch)) ||
+ if (!blk_mq_hctx_has_pending(hctx) ||
blk_mq_hctx_stopped(hctx))
continue;
@@ -1116,6 +1183,7 @@ void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs)
if (unlikely(!blk_mq_hw_queue_mapped(hctx)))
return;
+ blk_mq_stop_hw_queue(hctx);
kblockd_schedule_delayed_work_on(blk_mq_hctx_next_cpu(hctx),
&hctx->delay_work, msecs_to_jiffies(msecs));
}
@@ -1135,8 +1203,8 @@ static inline void __blk_mq_insert_req_list(struct blk_mq_hw_ctx *hctx,
list_add_tail(&rq->queuelist, &ctx->rq_list);
}
-static void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx,
- struct request *rq, bool at_head)
+void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
+ bool at_head)
{
struct blk_mq_ctx *ctx = rq->mq_ctx;
@@ -1144,32 +1212,10 @@ static void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx,
blk_mq_hctx_mark_pending(hctx, ctx);
}
-void blk_mq_insert_request(struct request *rq, bool at_head, bool run_queue,
- bool async)
-{
- struct blk_mq_ctx *ctx = rq->mq_ctx;
- struct request_queue *q = rq->q;
- struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, ctx->cpu);
-
- spin_lock(&ctx->lock);
- __blk_mq_insert_request(hctx, rq, at_head);
- spin_unlock(&ctx->lock);
-
- if (run_queue)
- blk_mq_run_hw_queue(hctx, async);
-}
-
-static void blk_mq_insert_requests(struct request_queue *q,
- struct blk_mq_ctx *ctx,
- struct list_head *list,
- int depth,
- bool from_schedule)
+void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
+ struct list_head *list)
{
- struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, ctx->cpu);
-
- trace_block_unplug(q, depth, !from_schedule);
-
/*
* preemption doesn't flush plug list, so it's possible ctx->cpu is
* offline now
@@ -1185,8 +1231,6 @@ static void blk_mq_insert_requests(struct request_queue *q,
}
blk_mq_hctx_mark_pending(hctx, ctx);
spin_unlock(&ctx->lock);
-
- blk_mq_run_hw_queue(hctx, from_schedule);
}
static int plug_ctx_cmp(void *priv, struct list_head *a, struct list_head *b)
@@ -1222,9 +1266,10 @@ void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule)
BUG_ON(!rq->q);
if (rq->mq_ctx != this_ctx) {
if (this_ctx) {
- blk_mq_insert_requests(this_q, this_ctx,
- &ctx_list, depth,
- from_schedule);
+ trace_block_unplug(this_q, depth, from_schedule);
+ blk_mq_sched_insert_requests(this_q, this_ctx,
+ &ctx_list,
+ from_schedule);
}
this_ctx = rq->mq_ctx;
@@ -1241,8 +1286,9 @@ void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule)
* on 'ctx_list'. Do those.
*/
if (this_ctx) {
- blk_mq_insert_requests(this_q, this_ctx, &ctx_list, depth,
- from_schedule);
+ trace_block_unplug(this_q, depth, from_schedule);
+ blk_mq_sched_insert_requests(this_q, this_ctx, &ctx_list,
+ from_schedule);
}
}
@@ -1280,46 +1326,39 @@ insert_rq:
}
spin_unlock(&ctx->lock);
- __blk_mq_free_request(hctx, ctx, rq);
+ __blk_mq_finish_request(hctx, ctx, rq);
return true;
}
}
-static struct request *blk_mq_map_request(struct request_queue *q,
- struct bio *bio,
- struct blk_mq_alloc_data *data)
+static blk_qc_t request_to_qc_t(struct blk_mq_hw_ctx *hctx, struct request *rq)
{
- struct blk_mq_hw_ctx *hctx;
- struct blk_mq_ctx *ctx;
- struct request *rq;
+ if (rq->tag != -1)
+ return blk_tag_to_qc_t(rq->tag, hctx->queue_num, false);
- blk_queue_enter_live(q);
- ctx = blk_mq_get_ctx(q);
- hctx = blk_mq_map_queue(q, ctx->cpu);
-
- trace_block_getrq(q, bio, bio->bi_opf);
- blk_mq_set_alloc_data(data, q, 0, ctx, hctx);
- rq = __blk_mq_alloc_request(data, bio->bi_opf);
-
- data->hctx->queued++;
- return rq;
+ return blk_tag_to_qc_t(rq->internal_tag, hctx->queue_num, true);
}
static void blk_mq_try_issue_directly(struct request *rq, blk_qc_t *cookie)
{
- int ret;
struct request_queue *q = rq->q;
- struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, rq->mq_ctx->cpu);
struct blk_mq_queue_data bd = {
.rq = rq,
.list = NULL,
.last = 1
};
- blk_qc_t new_cookie = blk_tag_to_qc_t(rq->tag, hctx->queue_num);
+ struct blk_mq_hw_ctx *hctx;
+ blk_qc_t new_cookie;
+ int ret;
- if (blk_mq_hctx_stopped(hctx))
+ if (q->elevator)
goto insert;
+ if (!blk_mq_get_driver_tag(rq, &hctx, false))
+ goto insert;
+
+ new_cookie = request_to_qc_t(hctx, rq);
+
/*
* For OK queue, we are done. For error, kill it. Any other
* error (busy), just add it to our list as we previously
@@ -1341,7 +1380,7 @@ static void blk_mq_try_issue_directly(struct request *rq, blk_qc_t *cookie)
}
insert:
- blk_mq_insert_request(rq, false, true, true);
+ blk_mq_sched_insert_request(rq, false, true, true, false);
}
/*
@@ -1352,8 +1391,8 @@ insert:
static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = op_is_sync(bio->bi_opf);
- const int is_flush_fua = bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
- struct blk_mq_alloc_data data;
+ const int is_flush_fua = op_is_flush(bio->bi_opf);
+ struct blk_mq_alloc_data data = { .flags = 0 };
struct request *rq;
unsigned int request_count = 0, srcu_idx;
struct blk_plug *plug;
@@ -1374,9 +1413,14 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
blk_attempt_plug_merge(q, bio, &request_count, &same_queue_rq))
return BLK_QC_T_NONE;
+ if (blk_mq_sched_bio_merge(q, bio))
+ return BLK_QC_T_NONE;
+
wb_acct = wbt_wait(q->rq_wb, bio, NULL);
- rq = blk_mq_map_request(q, bio, &data);
+ trace_block_getrq(q, bio, bio->bi_opf);
+
+ rq = blk_mq_sched_get_request(q, bio, bio->bi_opf, &data);
if (unlikely(!rq)) {
__wbt_done(q->rq_wb, wb_acct);
return BLK_QC_T_NONE;
@@ -1384,9 +1428,11 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
wbt_track(&rq->issue_stat, wb_acct);
- cookie = blk_tag_to_qc_t(rq->tag, data.hctx->queue_num);
+ cookie = request_to_qc_t(data.hctx, rq);
if (unlikely(is_flush_fua)) {
+ if (q->elevator)
+ goto elv_insert;
blk_mq_bio_to_request(rq, bio);
blk_insert_flush(rq);
goto run_queue;
@@ -1438,6 +1484,14 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
goto done;
}
+ if (q->elevator) {
+elv_insert:
+ blk_mq_put_ctx(data.ctx);
+ blk_mq_bio_to_request(rq, bio);
+ blk_mq_sched_insert_request(rq, false, true,
+ !is_sync || is_flush_fua, true);
+ goto done;
+ }
if (!blk_mq_merge_queue_io(data.hctx, data.ctx, rq, bio)) {
/*
* For a SYNC request, send it to the hardware immediately. For
@@ -1460,10 +1514,10 @@ done:
static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = op_is_sync(bio->bi_opf);
- const int is_flush_fua = bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
+ const int is_flush_fua = op_is_flush(bio->bi_opf);
struct blk_plug *plug;
unsigned int request_count = 0;
- struct blk_mq_alloc_data data;
+ struct blk_mq_alloc_data data = { .flags = 0 };
struct request *rq;
blk_qc_t cookie;
unsigned int wb_acct;
@@ -1483,9 +1537,14 @@ static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
} else
request_count = blk_plug_queued_count(q);
+ if (blk_mq_sched_bio_merge(q, bio))
+ return BLK_QC_T_NONE;
+
wb_acct = wbt_wait(q->rq_wb, bio, NULL);
- rq = blk_mq_map_request(q, bio, &data);
+ trace_block_getrq(q, bio, bio->bi_opf);
+
+ rq = blk_mq_sched_get_request(q, bio, bio->bi_opf, &data);
if (unlikely(!rq)) {
__wbt_done(q->rq_wb, wb_acct);
return BLK_QC_T_NONE;
@@ -1493,9 +1552,11 @@ static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
wbt_track(&rq->issue_stat, wb_acct);
- cookie = blk_tag_to_qc_t(rq->tag, data.hctx->queue_num);
+ cookie = request_to_qc_t(data.hctx, rq);
if (unlikely(is_flush_fua)) {
+ if (q->elevator)
+ goto elv_insert;
blk_mq_bio_to_request(rq, bio);
blk_insert_flush(rq);
goto run_queue;
@@ -1535,6 +1596,14 @@ static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
return cookie;
}
+ if (q->elevator) {
+elv_insert:
+ blk_mq_put_ctx(data.ctx);
+ blk_mq_bio_to_request(rq, bio);
+ blk_mq_sched_insert_request(rq, false, true,
+ !is_sync || is_flush_fua, true);
+ goto done;
+ }
if (!blk_mq_merge_queue_io(data.hctx, data.ctx, rq, bio)) {
/*
* For a SYNC request, send it to the hardware immediately. For
@@ -1547,11 +1616,12 @@ run_queue:
}
blk_mq_put_ctx(data.ctx);
+done:
return cookie;
}
-static void blk_mq_free_rq_map(struct blk_mq_tag_set *set,
- struct blk_mq_tags *tags, unsigned int hctx_idx)
+void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
+ unsigned int hctx_idx)
{
struct page *page;
@@ -1559,11 +1629,13 @@ static void blk_mq_free_rq_map(struct blk_mq_tag_set *set,
int i;
for (i = 0; i < tags->nr_tags; i++) {
- if (!tags->rqs[i])
+ struct request *rq = tags->static_rqs[i];
+
+ if (!rq)
continue;
- set->ops->exit_request(set->driver_data, tags->rqs[i],
+ set->ops->exit_request(set->driver_data, rq,
hctx_idx, i);
- tags->rqs[i] = NULL;
+ tags->static_rqs[i] = NULL;
}
}
@@ -1577,33 +1649,32 @@ static void blk_mq_free_rq_map(struct blk_mq_tag_set *set,
kmemleak_free(page_address(page));
__free_pages(page, page->private);
}
+}
+void blk_mq_free_rq_map(struct blk_mq_tags *tags)
+{
kfree(tags->rqs);
+ tags->rqs = NULL;
+ kfree(tags->static_rqs);
+ tags->static_rqs = NULL;
blk_mq_free_tags(tags);
}
-static size_t order_to_size(unsigned int order)
-{
- return (size_t)PAGE_SIZE << order;
-}
-
-static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
- unsigned int hctx_idx)
+struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set,
+ unsigned int hctx_idx,
+ unsigned int nr_tags,
+ unsigned int reserved_tags)
{
struct blk_mq_tags *tags;
- unsigned int i, j, entries_per_page, max_order = 4;
- size_t rq_size, left;
- tags = blk_mq_init_tags(set->queue_depth, set->reserved_tags,
+ tags = blk_mq_init_tags(nr_tags, reserved_tags,
set->numa_node,
BLK_MQ_FLAG_TO_ALLOC_POLICY(set->flags));
if (!tags)
return NULL;
- INIT_LIST_HEAD(&tags->page_list);
-
- tags->rqs = kzalloc_node(set->queue_depth * sizeof(struct request *),
+ tags->rqs = kzalloc_node(nr_tags * sizeof(struct request *),
GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
set->numa_node);
if (!tags->rqs) {
@@ -1611,15 +1682,40 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
return NULL;
}
+ tags->static_rqs = kzalloc_node(nr_tags * sizeof(struct request *),
+ GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY,
+ set->numa_node);
+ if (!tags->static_rqs) {
+ kfree(tags->rqs);
+ blk_mq_free_tags(tags);
+ return NULL;
+ }
+
+ return tags;
+}
+
+static size_t order_to_size(unsigned int order)
+{
+ return (size_t)PAGE_SIZE << order;
+}
+
+int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
+ unsigned int hctx_idx, unsigned int depth)
+{
+ unsigned int i, j, entries_per_page, max_order = 4;
+ size_t rq_size, left;
+
+ INIT_LIST_HEAD(&tags->page_list);
+
/*
* rq_size is the size of the request plus driver payload, rounded
* to the cacheline size
*/
rq_size = round_up(sizeof(struct request) + set->cmd_size,
cache_line_size());
- left = rq_size * set->queue_depth;
+ left = rq_size * depth;
- for (i = 0; i < set->queue_depth; ) {
+ for (i = 0; i < depth; ) {
int this_order = max_order;
struct page *page;
int to_do;
@@ -1653,15 +1749,17 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
*/
kmemleak_alloc(p, order_to_size(this_order), 1, GFP_NOIO);
entries_per_page = order_to_size(this_order) / rq_size;
- to_do = min(entries_per_page, set->queue_depth - i);
+ to_do = min(entries_per_page, depth - i);
left -= to_do * rq_size;
for (j = 0; j < to_do; j++) {
- tags->rqs[i] = p;
+ struct request *rq = p;
+
+ tags->static_rqs[i] = rq;
if (set->ops->init_request) {
if (set->ops->init_request(set->driver_data,
- tags->rqs[i], hctx_idx, i,
+ rq, hctx_idx, i,
set->numa_node)) {
- tags->rqs[i] = NULL;
+ tags->static_rqs[i] = NULL;
goto fail;
}
}
@@ -1670,11 +1768,11 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
i++;
}
}
- return tags;
+ return 0;
fail:
- blk_mq_free_rq_map(set, tags, hctx_idx);
- return NULL;
+ blk_mq_free_rqs(set, tags, hctx_idx);
+ return -ENOMEM;
}
/*
@@ -1866,6 +1964,35 @@ static void blk_mq_init_cpu_queues(struct request_queue *q,
}
}
+static bool __blk_mq_alloc_rq_map(struct blk_mq_tag_set *set, int hctx_idx)
+{
+ int ret = 0;
+
+ set->tags[hctx_idx] = blk_mq_alloc_rq_map(set, hctx_idx,
+ set->queue_depth, set->reserved_tags);
+ if (!set->tags[hctx_idx])
+ return false;
+
+ ret = blk_mq_alloc_rqs(set, set->tags[hctx_idx], hctx_idx,
+ set->queue_depth);
+ if (!ret)
+ return true;
+
+ blk_mq_free_rq_map(set->tags[hctx_idx]);
+ set->tags[hctx_idx] = NULL;
+ return false;
+}
+
+static void blk_mq_free_map_and_requests(struct blk_mq_tag_set *set,
+ unsigned int hctx_idx)
+{
+ if (set->tags[hctx_idx]) {
+ blk_mq_free_rqs(set, set->tags[hctx_idx], hctx_idx);
+ blk_mq_free_rq_map(set->tags[hctx_idx]);
+ set->tags[hctx_idx] = NULL;
+ }
+}
+
static void blk_mq_map_swqueue(struct request_queue *q,
const struct cpumask *online_mask)
{
@@ -1894,17 +2021,15 @@ static void blk_mq_map_swqueue(struct request_queue *q,
hctx_idx = q->mq_map[i];
/* unmapped hw queue can be remapped after CPU topo changed */
- if (!set->tags[hctx_idx]) {
- set->tags[hctx_idx] = blk_mq_init_rq_map(set, hctx_idx);
-
+ if (!set->tags[hctx_idx] &&
+ !__blk_mq_alloc_rq_map(set, hctx_idx)) {
/*
* If tags initialization fail for some hctx,
* that hctx won't be brought online. In this
* case, remap the current ctx to hctx[0] which
* is guaranteed to always have tags allocated
*/
- if (!set->tags[hctx_idx])
- q->mq_map[i] = 0;
+ q->mq_map[i] = 0;
}
ctx = per_cpu_ptr(q->queue_ctx, i);
@@ -1927,10 +2052,9 @@ static void blk_mq_map_swqueue(struct request_queue *q,
* fallback in case of a new remap fails
* allocation
*/
- if (i && set->tags[i]) {
- blk_mq_free_rq_map(set, set->tags[i], i);
- set->tags[i] = NULL;
- }
+ if (i && set->tags[i])
+ blk_mq_free_map_and_requests(set, i);
+
hctx->tags = NULL;
continue;
}
@@ -2023,6 +2147,8 @@ void blk_mq_release(struct request_queue *q)
struct blk_mq_hw_ctx *hctx;
unsigned int i;
+ blk_mq_sched_teardown(q);
+
/* hctx kobj stays in hctx */
queue_for_each_hw_ctx(q, hctx, i) {
if (!hctx)
@@ -2097,10 +2223,8 @@ static void blk_mq_realloc_hw_ctxs(struct blk_mq_tag_set *set,
struct blk_mq_hw_ctx *hctx = hctxs[j];
if (hctx) {
- if (hctx->tags) {
- blk_mq_free_rq_map(set, hctx->tags, j);
- set->tags[j] = NULL;
- }
+ if (hctx->tags)
+ blk_mq_free_map_and_requests(set, j);
blk_mq_exit_hctx(q, set, hctx, j);
free_cpumask_var(hctx->cpumask);
kobject_put(&hctx->kobj);
@@ -2181,6 +2305,14 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
mutex_unlock(&all_q_mutex);
put_online_cpus();
+ if (!(set->flags & BLK_MQ_F_NO_SCHED)) {
+ int ret;
+
+ ret = blk_mq_sched_init(q);
+ if (ret)
+ return ERR_PTR(ret);
+ }
+
return q;
err_hctxs:
@@ -2279,10 +2411,10 @@ static int blk_mq_queue_reinit_dead(unsigned int cpu)
* Now CPU1 is just onlined and a request is inserted into ctx1->rq_list
* and set bit0 in pending bitmap as ctx1->index_hw is still zero.
*
- * And then while running hw queue, flush_busy_ctxs() finds bit0 is set in
- * pending bitmap and tries to retrieve requests in hctx->ctxs[0]->rq_list.
- * But htx->ctxs[0] is a pointer to ctx0, so the request in ctx1->rq_list
- * is ignored.
+ * And then while running hw queue, blk_mq_flush_busy_ctxs() finds bit0 is set
+ * in pending bitmap and tries to retrieve requests in hctx->ctxs[0]->rq_list.
+ * But htx->ctxs[0] is a pointer to ctx0, so the request in ctx1->rq_list is
+ * ignored.
*/
static int blk_mq_queue_reinit_prepare(unsigned int cpu)
{
@@ -2296,17 +2428,15 @@ static int __blk_mq_alloc_rq_maps(struct blk_mq_tag_set *set)
{
int i;
- for (i = 0; i < set->nr_hw_queues; i++) {
- set->tags[i] = blk_mq_init_rq_map(set, i);
- if (!set->tags[i])
+ for (i = 0; i < set->nr_hw_queues; i++)
+ if (!__blk_mq_alloc_rq_map(set, i))
goto out_unwind;
- }
return 0;
out_unwind:
while (--i >= 0)
- blk_mq_free_rq_map(set, set->tags[i], i);
+ blk_mq_free_rq_map(set->tags[i]);
return -ENOMEM;
}
@@ -2430,10 +2560,8 @@ void blk_mq_free_tag_set(struct blk_mq_tag_set *set)
{
int i;
- for (i = 0; i < nr_cpu_ids; i++) {
- if (set->tags[i])
- blk_mq_free_rq_map(set, set->tags[i], i);
- }
+ for (i = 0; i < nr_cpu_ids; i++)
+ blk_mq_free_map_and_requests(set, i);
kfree(set->mq_map);
set->mq_map = NULL;
@@ -2449,14 +2577,28 @@ int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr)
struct blk_mq_hw_ctx *hctx;
int i, ret;
- if (!set || nr > set->queue_depth)
+ if (!set)
return -EINVAL;
+ blk_mq_freeze_queue(q);
+ blk_mq_quiesce_queue(q);
+
ret = 0;
queue_for_each_hw_ctx(q, hctx, i) {
if (!hctx->tags)
continue;
- ret = blk_mq_tag_update_depth(hctx->tags, nr);
+ /*
+ * If we're using an MQ scheduler, just update the scheduler
+ * queue depth. This is similar to what the old code would do.
+ */
+ if (!hctx->sched_tags) {
+ ret = blk_mq_tag_update_depth(hctx, &hctx->tags,
+ min(nr, set->queue_depth),
+ false);
+ } else {
+ ret = blk_mq_tag_update_depth(hctx, &hctx->sched_tags,
+ nr, true);
+ }
if (ret)
break;
}
@@ -2464,6 +2606,9 @@ int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr)
if (!ret)
q->nr_requests = nr;
+ blk_mq_unfreeze_queue(q);
+ blk_mq_start_stopped_hw_queues(q, true);
+
return ret;
}
@@ -2483,10 +2628,14 @@ void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues)
list_for_each_entry(q, &set->tag_list, tag_set_list) {
blk_mq_realloc_hw_ctxs(set, q);
+ /*
+ * Manually set the make_request_fn as blk_queue_make_request
+ * resets a lot of the queue settings.
+ */
if (q->nr_hw_queues > 1)
- blk_queue_make_request(q, blk_mq_make_request);
+ q->make_request_fn = blk_mq_make_request;
else
- blk_queue_make_request(q, blk_sq_make_request);
+ q->make_request_fn = blk_sq_make_request;
blk_mq_queue_reinit(q, cpu_online_mask);
}
@@ -2649,7 +2798,10 @@ bool blk_mq_poll(struct request_queue *q, blk_qc_t cookie)
blk_flush_plug_list(plug, false);
hctx = q->queue_hw_ctx[blk_qc_t_to_queue_num(cookie)];
- rq = blk_mq_tag_to_rq(hctx->tags, blk_qc_t_to_tag(cookie));
+ if (!blk_qc_t_is_internal(cookie))
+ rq = blk_mq_tag_to_rq(hctx->tags, blk_qc_t_to_tag(cookie));
+ else
+ rq = blk_mq_tag_to_rq(hctx->sched_tags, blk_qc_t_to_tag(cookie));
return __blk_mq_poll(hctx, rq);
}
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 63e9116..24b2256 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -32,8 +32,32 @@ void blk_mq_free_queue(struct request_queue *q);
int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr);
void blk_mq_wake_waiters(struct request_queue *q);
bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *, struct list_head *);
+void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
+bool blk_mq_hctx_has_pending(struct blk_mq_hw_ctx *hctx);
+bool blk_mq_get_driver_tag(struct request *rq, struct blk_mq_hw_ctx **hctx,
+ bool wait);
/*
+ * Internal helpers for allocating/freeing the request map
+ */
+void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
+ unsigned int hctx_idx);
+void blk_mq_free_rq_map(struct blk_mq_tags *tags);
+struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set,
+ unsigned int hctx_idx,
+ unsigned int nr_tags,
+ unsigned int reserved_tags);
+int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
+ unsigned int hctx_idx, unsigned int depth);
+
+/*
+ * Internal helpers for request insertion into sw queues
+ */
+void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
+ bool at_head);
+void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
+ struct list_head *list);
+/*
* CPU hotplug helpers
*/
void blk_mq_enable_hotplug(void);
@@ -57,6 +81,35 @@ extern int blk_mq_sysfs_register(struct request_queue *q);
extern void blk_mq_sysfs_unregister(struct request_queue *q);
extern void blk_mq_hctx_kobj_init(struct blk_mq_hw_ctx *hctx);
+/*
+ * debugfs helpers
+ */
+#ifdef CONFIG_BLK_DEBUG_FS
+int blk_mq_debugfs_register(struct request_queue *q, const char *name);
+void blk_mq_debugfs_unregister(struct request_queue *q);
+int blk_mq_debugfs_register_hctxs(struct request_queue *q);
+void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
+#else
+static inline int blk_mq_debugfs_register(struct request_queue *q,
+ const char *name)
+{
+ return 0;
+}
+
+static inline void blk_mq_debugfs_unregister(struct request_queue *q)
+{
+}
+
+static inline int blk_mq_debugfs_register_hctxs(struct request_queue *q)
+{
+ return 0;
+}
+
+static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
+{
+}
+#endif
+
extern void blk_mq_rq_timed_out(struct request *req, bool reserved);
void blk_mq_release(struct request_queue *q);
@@ -103,6 +156,25 @@ static inline void blk_mq_set_alloc_data(struct blk_mq_alloc_data *data,
data->hctx = hctx;
}
+static inline struct blk_mq_tags *blk_mq_tags_from_data(struct blk_mq_alloc_data *data)
+{
+ if (data->flags & BLK_MQ_REQ_INTERNAL)
+ return data->hctx->sched_tags;
+
+ return data->hctx->tags;
+}
+
+/*
+ * Internal helpers for request allocation/init/free
+ */
+void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
+ struct request *rq, unsigned int op);
+void __blk_mq_finish_request(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
+ struct request *rq);
+void blk_mq_finish_request(struct request *rq);
+struct request *__blk_mq_alloc_request(struct blk_mq_alloc_data *data,
+ unsigned int op);
+
static inline bool blk_mq_hctx_stopped(struct blk_mq_hw_ctx *hctx)
{
return test_bit(BLK_MQ_S_STOPPED, &hctx->state);
diff --git a/block/blk-settings.c b/block/blk-settings.c
index 529e55f..1e7174f 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -88,6 +88,7 @@ EXPORT_SYMBOL_GPL(blk_queue_lld_busy);
void blk_set_default_limits(struct queue_limits *lim)
{
lim->max_segments = BLK_MAX_SEGMENTS;
+ lim->max_discard_segments = 1;
lim->max_integrity_segments = 0;
lim->seg_boundary_mask = BLK_SEG_BOUNDARY_MASK;
lim->virt_boundary_mask = 0;
@@ -128,6 +129,7 @@ void blk_set_stacking_limits(struct queue_limits *lim)
/* Inherit limits from component devices */
lim->discard_zeroes_data = 1;
lim->max_segments = USHRT_MAX;
+ lim->max_discard_segments = 1;
lim->max_hw_sectors = UINT_MAX;
lim->max_segment_size = UINT_MAX;
lim->max_sectors = UINT_MAX;
@@ -253,7 +255,7 @@ void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_secto
max_sectors = min_not_zero(max_hw_sectors, limits->max_dev_sectors);
max_sectors = min_t(unsigned int, max_sectors, BLK_DEF_MAX_SECTORS);
limits->max_sectors = max_sectors;
- q->backing_dev_info.io_pages = max_sectors >> (PAGE_SHIFT - 9);
+ q->backing_dev_info->io_pages = max_sectors >> (PAGE_SHIFT - 9);
}
EXPORT_SYMBOL(blk_queue_max_hw_sectors);
@@ -337,6 +339,22 @@ void blk_queue_max_segments(struct request_queue *q, unsigned short max_segments
EXPORT_SYMBOL(blk_queue_max_segments);
/**
+ * blk_queue_max_discard_segments - set max segments for discard requests
+ * @q: the request queue for the device
+ * @max_segments: max number of segments
+ *
+ * Description:
+ * Enables a low level driver to set an upper limit on the number of
+ * segments in a discard request.
+ **/
+void blk_queue_max_discard_segments(struct request_queue *q,
+ unsigned short max_segments)
+{
+ q->limits.max_discard_segments = max_segments;
+}
+EXPORT_SYMBOL_GPL(blk_queue_max_discard_segments);
+
+/**
* blk_queue_max_segment_size - set max segment size for blk_rq_map_sg
* @q: the request queue for the device
* @max_size: max size of segment in bytes
@@ -553,6 +571,8 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
b->virt_boundary_mask);
t->max_segments = min_not_zero(t->max_segments, b->max_segments);
+ t->max_discard_segments = min_not_zero(t->max_discard_segments,
+ b->max_discard_segments);
t->max_integrity_segments = min_not_zero(t->max_integrity_segments,
b->max_integrity_segments);
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 1dbce05..002af83 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -89,7 +89,7 @@ queue_requests_store(struct request_queue *q, const char *page, size_t count)
static ssize_t queue_ra_show(struct request_queue *q, char *page)
{
- unsigned long ra_kb = q->backing_dev_info.ra_pages <<
+ unsigned long ra_kb = q->backing_dev_info->ra_pages <<
(PAGE_SHIFT - 10);
return queue_var_show(ra_kb, (page));
@@ -104,7 +104,7 @@ queue_ra_store(struct request_queue *q, const char *page, size_t count)
if (ret < 0)
return ret;
- q->backing_dev_info.ra_pages = ra_kb >> (PAGE_SHIFT - 10);
+ q->backing_dev_info->ra_pages = ra_kb >> (PAGE_SHIFT - 10);
return ret;
}
@@ -121,6 +121,12 @@ static ssize_t queue_max_segments_show(struct request_queue *q, char *page)
return queue_var_show(queue_max_segments(q), (page));
}
+static ssize_t queue_max_discard_segments_show(struct request_queue *q,
+ char *page)
+{
+ return queue_var_show(queue_max_discard_segments(q), (page));
+}
+
static ssize_t queue_max_integrity_segments_show(struct request_queue *q, char *page)
{
return queue_var_show(q->limits.max_integrity_segments, (page));
@@ -236,7 +242,7 @@ queue_max_sectors_store(struct request_queue *q, const char *page, size_t count)
spin_lock_irq(q->queue_lock);
q->limits.max_sectors = max_sectors_kb << 1;
- q->backing_dev_info.io_pages = max_sectors_kb >> (PAGE_SHIFT - 10);
+ q->backing_dev_info->io_pages = max_sectors_kb >> (PAGE_SHIFT - 10);
spin_unlock_irq(q->queue_lock);
return ret;
@@ -545,6 +551,11 @@ static struct queue_sysfs_entry queue_max_segments_entry = {
.show = queue_max_segments_show,
};
+static struct queue_sysfs_entry queue_max_discard_segments_entry = {
+ .attr = {.name = "max_discard_segments", .mode = S_IRUGO },
+ .show = queue_max_discard_segments_show,
+};
+
static struct queue_sysfs_entry queue_max_integrity_segments_entry = {
.attr = {.name = "max_integrity_segments", .mode = S_IRUGO },
.show = queue_max_integrity_segments_show,
@@ -697,6 +708,7 @@ static struct attribute *default_attrs[] = {
&queue_max_hw_sectors_entry.attr,
&queue_max_sectors_entry.attr,
&queue_max_segments_entry.attr,
+ &queue_max_discard_segments_entry.attr,
&queue_max_integrity_segments_entry.attr,
&queue_max_segment_size_entry.attr,
&queue_iosched_entry.attr,
@@ -799,7 +811,7 @@ static void blk_release_queue(struct kobject *kobj)
container_of(kobj, struct request_queue, kobj);
wbt_exit(q);
- bdi_exit(&q->backing_dev_info);
+ bdi_put(q->backing_dev_info);
blkcg_exit_queue(q);
if (q->elevator) {
@@ -814,13 +826,19 @@ static void blk_release_queue(struct kobject *kobj)
if (q->queue_tags)
__blk_queue_free_tags(q);
- if (!q->mq_ops)
+ if (!q->mq_ops) {
+ if (q->exit_rq_fn)
+ q->exit_rq_fn(q, q->fq->flush_rq);
blk_free_flush_queue(q->fq);
- else
+ } else {
blk_mq_release(q);
+ }
blk_trace_shutdown(q);
+ if (q->mq_ops)
+ blk_mq_debugfs_unregister(q);
+
if (q->bio_split)
bioset_free(q->bio_split);
@@ -884,32 +902,36 @@ int blk_register_queue(struct gendisk *disk)
if (ret)
return ret;
+ if (q->mq_ops)
+ blk_mq_register_dev(dev, q);
+
+ /* Prevent changes through sysfs until registration is completed. */
+ mutex_lock(&q->sysfs_lock);
+
ret = kobject_add(&q->kobj, kobject_get(&dev->kobj), "%s", "queue");
if (ret < 0) {
blk_trace_remove_sysfs(dev);
- return ret;
+ goto unlock;
}
kobject_uevent(&q->kobj, KOBJ_ADD);
- if (q->mq_ops)
- blk_mq_register_dev(dev, q);
-
blk_wb_init(q);
- if (!q->request_fn)
- return 0;
-
- ret = elv_register_queue(q);
- if (ret) {
- kobject_uevent(&q->kobj, KOBJ_REMOVE);
- kobject_del(&q->kobj);
- blk_trace_remove_sysfs(dev);
- kobject_put(&dev->kobj);
- return ret;
+ if (q->request_fn || (q->mq_ops && q->elevator)) {
+ ret = elv_register_queue(q);
+ if (ret) {
+ kobject_uevent(&q->kobj, KOBJ_REMOVE);
+ kobject_del(&q->kobj);
+ blk_trace_remove_sysfs(dev);
+ kobject_put(&dev->kobj);
+ goto unlock;
+ }
}
-
- return 0;
+ ret = 0;
+unlock:
+ mutex_unlock(&q->sysfs_lock);
+ return ret;
}
void blk_unregister_queue(struct gendisk *disk)
@@ -922,7 +944,7 @@ void blk_unregister_queue(struct gendisk *disk)
if (q->mq_ops)
blk_mq_unregister_dev(disk_to_dev(disk), q);
- if (q->request_fn)
+ if (q->request_fn || (q->mq_ops && q->elevator))
elv_unregister_queue(q);
kobject_uevent(&q->kobj, KOBJ_REMOVE);
diff --git a/block/blk-tag.c b/block/blk-tag.c
index bae1dec..07cc329 100644
--- a/block/blk-tag.c
+++ b/block/blk-tag.c
@@ -272,6 +272,7 @@ void blk_queue_end_tag(struct request_queue *q, struct request *rq)
list_del_init(&rq->queuelist);
rq->rq_flags &= ~RQF_QUEUED;
rq->tag = -1;
+ rq->internal_tag = -1;
if (unlikely(bqt->tag_index[tag] == NULL))
printk(KERN_ERR "%s: tag %d is missing\n",
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index a6bb4fe..82fd0cc 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -866,10 +866,12 @@ static void tg_update_disptime(struct throtl_grp *tg)
unsigned long read_wait = -1, write_wait = -1, min_wait = -1, disptime;
struct bio *bio;
- if ((bio = throtl_peek_queued(&sq->queued[READ])))
+ bio = throtl_peek_queued(&sq->queued[READ]);
+ if (bio)
tg_may_dispatch(tg, bio, &read_wait);
- if ((bio = throtl_peek_queued(&sq->queued[WRITE])))
+ bio = throtl_peek_queued(&sq->queued[WRITE]);
+ if (bio)
tg_may_dispatch(tg, bio, &write_wait);
min_wait = min(read_wait, write_wait);
diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index f0a9c07..1aedb1f 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -96,7 +96,7 @@ static void wb_timestamp(struct rq_wb *rwb, unsigned long *var)
*/
static bool wb_recent_wait(struct rq_wb *rwb)
{
- struct bdi_writeback *wb = &rwb->queue->backing_dev_info.wb;
+ struct bdi_writeback *wb = &rwb->queue->backing_dev_info->wb;
return time_before(jiffies, wb->dirty_sleep + HZ);
}
@@ -279,7 +279,7 @@ enum {
static int __latency_exceeded(struct rq_wb *rwb, struct blk_rq_stat *stat)
{
- struct backing_dev_info *bdi = &rwb->queue->backing_dev_info;
+ struct backing_dev_info *bdi = rwb->queue->backing_dev_info;
u64 thislat;
/*
@@ -339,7 +339,7 @@ static int latency_exceeded(struct rq_wb *rwb)
static void rwb_trace_step(struct rq_wb *rwb, const char *msg)
{
- struct backing_dev_info *bdi = &rwb->queue->backing_dev_info;
+ struct backing_dev_info *bdi = rwb->queue->backing_dev_info;
trace_wbt_step(bdi, msg, rwb->scale_step, rwb->cur_win_nsec,
rwb->wb_background, rwb->wb_normal, rwb->wb_max);
@@ -423,7 +423,7 @@ static void wb_timer_fn(unsigned long data)
status = latency_exceeded(rwb);
- trace_wbt_timer(&rwb->queue->backing_dev_info, status, rwb->scale_step,
+ trace_wbt_timer(rwb->queue->backing_dev_info, status, rwb->scale_step,
inflight);
/*
diff --git a/block/blk.h b/block/blk.h
index 041185e..d1ea4bd9 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -14,6 +14,10 @@
/* Max future timer expiry for timeouts */
#define BLK_MAX_TIMEOUT (5 * HZ)
+#ifdef CONFIG_DEBUG_FS
+extern struct dentry *blk_debugfs_root;
+#endif
+
struct blk_flush_queue {
unsigned int flush_queue_delayed:1;
unsigned int flush_pending_idx:1;
@@ -96,6 +100,8 @@ bool bio_attempt_front_merge(struct request_queue *q, struct request *req,
struct bio *bio);
bool bio_attempt_back_merge(struct request_queue *q, struct request *req,
struct bio *bio);
+bool bio_attempt_discard_merge(struct request_queue *q, struct request *req,
+ struct bio *bio);
bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
unsigned int *request_count,
struct request **same_queue_rq);
@@ -167,7 +173,7 @@ static inline struct request *__elv_next_request(struct request_queue *q)
return NULL;
}
if (unlikely(blk_queue_bypass(q)) ||
- !q->elevator->type->ops.elevator_dispatch_fn(q, 0))
+ !q->elevator->type->ops.sq.elevator_dispatch_fn(q, 0))
return NULL;
}
}
@@ -176,16 +182,16 @@ static inline void elv_activate_rq(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_activate_req_fn)
- e->type->ops.elevator_activate_req_fn(q, rq);
+ if (e->type->ops.sq.elevator_activate_req_fn)
+ e->type->ops.sq.elevator_activate_req_fn(q, rq);
}
static inline void elv_deactivate_rq(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_deactivate_req_fn)
- e->type->ops.elevator_deactivate_req_fn(q, rq);
+ if (e->type->ops.sq.elevator_deactivate_req_fn)
+ e->type->ops.sq.elevator_deactivate_req_fn(q, rq);
}
#ifdef CONFIG_FAIL_IO_TIMEOUT
@@ -204,14 +210,14 @@ int ll_back_merge_fn(struct request_queue *q, struct request *req,
struct bio *bio);
int ll_front_merge_fn(struct request_queue *q, struct request *req,
struct bio *bio);
-int attempt_back_merge(struct request_queue *q, struct request *rq);
-int attempt_front_merge(struct request_queue *q, struct request *rq);
+struct request *attempt_back_merge(struct request_queue *q, struct request *rq);
+struct request *attempt_front_merge(struct request_queue *q, struct request *rq);
int blk_attempt_req_merge(struct request_queue *q, struct request *rq,
struct request *next);
void blk_recalc_rq_segments(struct request *rq);
void blk_rq_set_mixed_merge(struct request *rq);
bool blk_rq_merge_ok(struct request *rq, struct bio *bio);
-int blk_try_merge(struct request *rq, struct bio *bio);
+enum elv_merge blk_try_merge(struct request *rq, struct bio *bio);
void blk_queue_congestion_threshold(struct request_queue *q);
@@ -249,7 +255,14 @@ static inline int blk_do_io_stat(struct request *rq)
{
return rq->rq_disk &&
(rq->rq_flags & RQF_IO_STAT) &&
- (rq->cmd_type == REQ_TYPE_FS);
+ !blk_rq_is_passthrough(rq);
+}
+
+static inline void req_set_nomerge(struct request_queue *q, struct request *req)
+{
+ req->cmd_flags |= REQ_NOMERGE;
+ if (req == q->last_merge)
+ q->last_merge = NULL;
}
/*
@@ -264,6 +277,22 @@ void ioc_clear_queue(struct request_queue *q);
int create_task_io_context(struct task_struct *task, gfp_t gfp_mask, int node);
/**
+ * rq_ioc - determine io_context for request allocation
+ * @bio: request being allocated is for this bio (can be %NULL)
+ *
+ * Determine io_context to use for request allocation for @bio. May return
+ * %NULL if %current->io_context doesn't exist.
+ */
+static inline struct io_context *rq_ioc(struct bio *bio)
+{
+#ifdef CONFIG_BLK_CGROUP
+ if (bio && bio->bi_ioc)
+ return bio->bi_ioc;
+#endif
+ return current->io_context;
+}
+
+/**
* create_io_context - try to create task->io_context
* @gfp_mask: allocation mask
* @node: allocation node
diff --git a/block/bsg-lib.c b/block/bsg-lib.c
index 9d652a9..cd15f9d 100644
--- a/block/bsg-lib.c
+++ b/block/bsg-lib.c
@@ -71,22 +71,24 @@ void bsg_job_done(struct bsg_job *job, int result,
{
struct request *req = job->req;
struct request *rsp = req->next_rq;
+ struct scsi_request *rq = scsi_req(req);
int err;
err = job->req->errors = result;
if (err < 0)
/* we're only returning the result field in the reply */
- job->req->sense_len = sizeof(u32);
+ rq->sense_len = sizeof(u32);
else
- job->req->sense_len = job->reply_len;
+ rq->sense_len = job->reply_len;
/* we assume all request payload was transferred, residual == 0 */
- req->resid_len = 0;
+ rq->resid_len = 0;
if (rsp) {
- WARN_ON(reply_payload_rcv_len > rsp->resid_len);
+ WARN_ON(reply_payload_rcv_len > scsi_req(rsp)->resid_len);
/* set reply (bidi) residual */
- rsp->resid_len -= min(reply_payload_rcv_len, rsp->resid_len);
+ scsi_req(rsp)->resid_len -=
+ min(reply_payload_rcv_len, scsi_req(rsp)->resid_len);
}
blk_complete_request(req);
}
@@ -113,6 +115,7 @@ static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req)
if (!buf->sg_list)
return -ENOMEM;
sg_init_table(buf->sg_list, req->nr_phys_segments);
+ scsi_req(req)->resid_len = blk_rq_bytes(req);
buf->sg_cnt = blk_rq_map_sg(req->q, req, buf->sg_list);
buf->payload_len = blk_rq_bytes(req);
return 0;
@@ -127,6 +130,7 @@ static int bsg_create_job(struct device *dev, struct request *req)
{
struct request *rsp = req->next_rq;
struct request_queue *q = req->q;
+ struct scsi_request *rq = scsi_req(req);
struct bsg_job *job;
int ret;
@@ -140,9 +144,9 @@ static int bsg_create_job(struct device *dev, struct request *req)
job->req = req;
if (q->bsg_job_size)
job->dd_data = (void *)&job[1];
- job->request = req->cmd;
- job->request_len = req->cmd_len;
- job->reply = req->sense;
+ job->request = rq->cmd;
+ job->request_len = rq->cmd_len;
+ job->reply = rq->sense;
job->reply_len = SCSI_SENSE_BUFFERSIZE; /* Size of sense buffer
* allocated */
if (req->bio) {
@@ -177,7 +181,7 @@ failjob_rls_job:
*
* Drivers/subsys should pass this to the queue init function.
*/
-void bsg_request_fn(struct request_queue *q)
+static void bsg_request_fn(struct request_queue *q)
__releases(q->queue_lock)
__acquires(q->queue_lock)
{
@@ -214,24 +218,30 @@ void bsg_request_fn(struct request_queue *q)
put_device(dev);
spin_lock_irq(q->queue_lock);
}
-EXPORT_SYMBOL_GPL(bsg_request_fn);
/**
* bsg_setup_queue - Create and add the bsg hooks so we can receive requests
* @dev: device to attach bsg device to
- * @q: request queue setup by caller
* @name: device to give bsg device
* @job_fn: bsg job handler
* @dd_job_size: size of LLD data needed for each job
- *
- * The caller should have setup the reuqest queue with bsg_request_fn
- * as the request_fn.
*/
-int bsg_setup_queue(struct device *dev, struct request_queue *q,
- char *name, bsg_job_fn *job_fn, int dd_job_size)
+struct request_queue *bsg_setup_queue(struct device *dev, char *name,
+ bsg_job_fn *job_fn, int dd_job_size)
{
+ struct request_queue *q;
int ret;
+ q = blk_alloc_queue(GFP_KERNEL);
+ if (!q)
+ return ERR_PTR(-ENOMEM);
+ q->cmd_size = sizeof(struct scsi_request);
+ q->request_fn = bsg_request_fn;
+
+ ret = blk_init_allocated_queue(q);
+ if (ret)
+ goto out_cleanup_queue;
+
q->queuedata = dev;
q->bsg_job_size = dd_job_size;
q->bsg_job_fn = job_fn;
@@ -243,9 +253,12 @@ int bsg_setup_queue(struct device *dev, struct request_queue *q,
if (ret) {
printk(KERN_ERR "%s: bsg interface failed to "
"initialize - register queue\n", dev->kobj.name);
- return ret;
+ goto out_cleanup_queue;
}
- return 0;
+ return q;
+out_cleanup_queue:
+ blk_cleanup_queue(q);
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(bsg_setup_queue);
diff --git a/block/bsg.c b/block/bsg.c
index a57046d..a9a8b8e 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -85,7 +85,6 @@ struct bsg_command {
struct bio *bidi_bio;
int err;
struct sg_io_v4 hdr;
- char sense[SCSI_SENSE_BUFFERSIZE];
};
static void bsg_free_command(struct bsg_command *bc)
@@ -140,18 +139,20 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
struct sg_io_v4 *hdr, struct bsg_device *bd,
fmode_t has_write_perm)
{
+ struct scsi_request *req = scsi_req(rq);
+
if (hdr->request_len > BLK_MAX_CDB) {
- rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
- if (!rq->cmd)
+ req->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
+ if (!req->cmd)
return -ENOMEM;
}
- if (copy_from_user(rq->cmd, (void __user *)(unsigned long)hdr->request,
+ if (copy_from_user(req->cmd, (void __user *)(unsigned long)hdr->request,
hdr->request_len))
return -EFAULT;
if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
- if (blk_verify_command(rq->cmd, has_write_perm))
+ if (blk_verify_command(req->cmd, has_write_perm))
return -EPERM;
} else if (!capable(CAP_SYS_RAWIO))
return -EPERM;
@@ -159,7 +160,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
/*
* fill in request structure
*/
- rq->cmd_len = hdr->request_len;
+ req->cmd_len = hdr->request_len;
rq->timeout = msecs_to_jiffies(hdr->timeout);
if (!rq->timeout)
@@ -176,7 +177,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
* Check if sg_io_v4 from user is allowed and valid
*/
static int
-bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw)
+bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *op)
{
int ret = 0;
@@ -197,7 +198,7 @@ bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw)
ret = -EINVAL;
}
- *rw = hdr->dout_xfer_len ? WRITE : READ;
+ *op = hdr->dout_xfer_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN;
return ret;
}
@@ -205,13 +206,12 @@ bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *rw)
* map sg_io_v4 to a request.
*/
static struct request *
-bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
- u8 *sense)
+bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
{
struct request_queue *q = bd->queue;
struct request *rq, *next_rq = NULL;
- int ret, rw;
- unsigned int dxfer_len;
+ int ret;
+ unsigned int op, dxfer_len;
void __user *dxferp = NULL;
struct bsg_class_device *bcd = &q->bsg_dev;
@@ -226,36 +226,35 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
hdr->dout_xfer_len, (unsigned long long) hdr->din_xferp,
hdr->din_xfer_len);
- ret = bsg_validate_sgv4_hdr(hdr, &rw);
+ ret = bsg_validate_sgv4_hdr(hdr, &op);
if (ret)
return ERR_PTR(ret);
/*
* map scatter-gather elements separately and string them to request
*/
- rq = blk_get_request(q, rw, GFP_KERNEL);
+ rq = blk_get_request(q, op, GFP_KERNEL);
if (IS_ERR(rq))
return rq;
- blk_rq_set_block_pc(rq);
+ scsi_req_init(rq);
ret = blk_fill_sgv4_hdr_rq(q, rq, hdr, bd, has_write_perm);
if (ret)
goto out;
- if (rw == WRITE && hdr->din_xfer_len) {
+ if (op == REQ_OP_SCSI_OUT && hdr->din_xfer_len) {
if (!test_bit(QUEUE_FLAG_BIDI, &q->queue_flags)) {
ret = -EOPNOTSUPP;
goto out;
}
- next_rq = blk_get_request(q, READ, GFP_KERNEL);
+ next_rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(next_rq)) {
ret = PTR_ERR(next_rq);
next_rq = NULL;
goto out;
}
rq->next_rq = next_rq;
- next_rq->cmd_type = rq->cmd_type;
dxferp = (void __user *)(unsigned long)hdr->din_xferp;
ret = blk_rq_map_user(q, next_rq, NULL, dxferp,
@@ -280,13 +279,9 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
goto out;
}
- rq->sense = sense;
- rq->sense_len = 0;
-
return rq;
out:
- if (rq->cmd != rq->__cmd)
- kfree(rq->cmd);
+ scsi_req_free_cmd(scsi_req(rq));
blk_put_request(rq);
if (next_rq) {
blk_rq_unmap_user(next_rq->bio);
@@ -393,6 +388,7 @@ static struct bsg_command *bsg_get_done_cmd(struct bsg_device *bd)
static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
struct bio *bio, struct bio *bidi_bio)
{
+ struct scsi_request *req = scsi_req(rq);
int ret = 0;
dprintk("rq %p bio %p 0x%x\n", rq, bio, rq->errors);
@@ -407,12 +403,12 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
hdr->info |= SG_INFO_CHECK;
hdr->response_len = 0;
- if (rq->sense_len && hdr->response) {
+ if (req->sense_len && hdr->response) {
int len = min_t(unsigned int, hdr->max_response_len,
- rq->sense_len);
+ req->sense_len);
ret = copy_to_user((void __user *)(unsigned long)hdr->response,
- rq->sense, len);
+ req->sense, len);
if (!ret)
hdr->response_len = len;
else
@@ -420,14 +416,14 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
}
if (rq->next_rq) {
- hdr->dout_resid = rq->resid_len;
- hdr->din_resid = rq->next_rq->resid_len;
+ hdr->dout_resid = req->resid_len;
+ hdr->din_resid = scsi_req(rq->next_rq)->resid_len;
blk_rq_unmap_user(bidi_bio);
blk_put_request(rq->next_rq);
} else if (rq_data_dir(rq) == READ)
- hdr->din_resid = rq->resid_len;
+ hdr->din_resid = req->resid_len;
else
- hdr->dout_resid = rq->resid_len;
+ hdr->dout_resid = req->resid_len;
/*
* If the request generated a negative error number, return it
@@ -439,8 +435,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
ret = rq->errors;
blk_rq_unmap_user(bio);
- if (rq->cmd != rq->__cmd)
- kfree(rq->cmd);
+ scsi_req_free_cmd(req);
blk_put_request(rq);
return ret;
@@ -625,7 +620,7 @@ static int __bsg_write(struct bsg_device *bd, const char __user *buf,
/*
* get a request, fill in the blanks, and add to request queue
*/
- rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm, bc->sense);
+ rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm);
if (IS_ERR(rq)) {
ret = PTR_ERR(rq);
rq = NULL;
@@ -911,12 +906,11 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
struct bio *bio, *bidi_bio = NULL;
struct sg_io_v4 hdr;
int at_head;
- u8 sense[SCSI_SENSE_BUFFERSIZE];
if (copy_from_user(&hdr, uarg, sizeof(hdr)))
return -EFAULT;
- rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE, sense);
+ rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE);
if (IS_ERR(rq))
return PTR_ERR(rq);
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 838f07e..1379447 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -2528,7 +2528,7 @@ static void cfq_remove_request(struct request *rq)
}
}
-static int cfq_merge(struct request_queue *q, struct request **req,
+static enum elv_merge cfq_merge(struct request_queue *q, struct request **req,
struct bio *bio)
{
struct cfq_data *cfqd = q->elevator->elevator_data;
@@ -2544,7 +2544,7 @@ static int cfq_merge(struct request_queue *q, struct request **req,
}
static void cfq_merged_request(struct request_queue *q, struct request *req,
- int type)
+ enum elv_merge type)
{
if (type == ELEVATOR_FRONT_MERGE) {
struct cfq_queue *cfqq = RQ_CFQQ(req);
@@ -2749,9 +2749,11 @@ static struct cfq_queue *cfq_get_next_queue_forced(struct cfq_data *cfqd)
if (!cfqg)
return NULL;
- for_each_cfqg_st(cfqg, i, j, st)
- if ((cfqq = cfq_rb_first(st)) != NULL)
+ for_each_cfqg_st(cfqg, i, j, st) {
+ cfqq = cfq_rb_first(st);
+ if (cfqq)
return cfqq;
+ }
return NULL;
}
@@ -3860,6 +3862,8 @@ cfq_get_queue(struct cfq_data *cfqd, bool is_sync, struct cfq_io_cq *cic,
goto out;
}
+ /* cfq_init_cfqq() assumes cfqq->ioprio_class is initialized. */
+ cfqq->ioprio_class = IOPRIO_CLASS_NONE;
cfq_init_cfqq(cfqd, cfqq, current->pid, is_sync);
cfq_init_prio_data(cfqq, cic);
cfq_link_cfqq_cfqg(cfqq, cfqg);
@@ -4838,7 +4842,7 @@ static struct elv_fs_entry cfq_attrs[] = {
};
static struct elevator_type iosched_cfq = {
- .ops = {
+ .ops.sq = {
.elevator_merge_fn = cfq_merge,
.elevator_merged_fn = cfq_merged_request,
.elevator_merge_req_fn = cfq_merged_requests,
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 556826a..570021a 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -661,7 +661,6 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
struct block_device *bdev = inode->i_bdev;
struct gendisk *disk = bdev->bd_disk;
fmode_t mode = file->f_mode;
- struct backing_dev_info *bdi;
loff_t size;
unsigned int max_sectors;
@@ -708,9 +707,8 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case BLKFRAGET:
if (!arg)
return -EINVAL;
- bdi = blk_get_backing_dev_info(bdev);
return compat_put_long(arg,
- (bdi->ra_pages * PAGE_SIZE) / 512);
+ (bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512);
case BLKROGET: /* compatible */
return compat_put_int(arg, bdev_read_only(bdev) != 0);
case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */
@@ -728,8 +726,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case BLKFRASET:
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- bdi = blk_get_backing_dev_info(bdev);
- bdi->ra_pages = (arg * 512) / PAGE_SIZE;
+ bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;
return 0;
case BLKGETSIZE:
size = i_size_read(bdev->bd_inode);
diff --git a/block/deadline-iosched.c b/block/deadline-iosched.c
index 55e0bb6..c68f6bb 100644
--- a/block/deadline-iosched.c
+++ b/block/deadline-iosched.c
@@ -120,12 +120,11 @@ static void deadline_remove_request(struct request_queue *q, struct request *rq)
deadline_del_rq_rb(dd, rq);
}
-static int
+static enum elv_merge
deadline_merge(struct request_queue *q, struct request **req, struct bio *bio)
{
struct deadline_data *dd = q->elevator->elevator_data;
struct request *__rq;
- int ret;
/*
* check for front merge
@@ -138,20 +137,17 @@ deadline_merge(struct request_queue *q, struct request **req, struct bio *bio)
BUG_ON(sector != blk_rq_pos(__rq));
if (elv_bio_merge_ok(__rq, bio)) {
- ret = ELEVATOR_FRONT_MERGE;
- goto out;
+ *req = __rq;
+ return ELEVATOR_FRONT_MERGE;
}
}
}
return ELEVATOR_NO_MERGE;
-out:
- *req = __rq;
- return ret;
}
static void deadline_merged_request(struct request_queue *q,
- struct request *req, int type)
+ struct request *req, enum elv_merge type)
{
struct deadline_data *dd = q->elevator->elevator_data;
@@ -439,7 +435,7 @@ static struct elv_fs_entry deadline_attrs[] = {
};
static struct elevator_type iosched_deadline = {
- .ops = {
+ .ops.sq = {
.elevator_merge_fn = deadline_merge,
.elevator_merged_fn = deadline_merged_request,
.elevator_merge_req_fn = deadline_merged_requests,
diff --git a/block/elevator.c b/block/elevator.c
index 40f0c04..699d10f 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -40,6 +40,7 @@
#include <trace/events/block.h>
#include "blk.h"
+#include "blk-mq-sched.h"
static DEFINE_SPINLOCK(elv_list_lock);
static LIST_HEAD(elv_list);
@@ -58,8 +59,10 @@ static int elv_iosched_allow_bio_merge(struct request *rq, struct bio *bio)
struct request_queue *q = rq->q;
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_allow_bio_merge_fn)
- return e->type->ops.elevator_allow_bio_merge_fn(q, rq, bio);
+ if (e->uses_mq && e->type->ops.mq.allow_merge)
+ return e->type->ops.mq.allow_merge(q, rq, bio);
+ else if (!e->uses_mq && e->type->ops.sq.elevator_allow_bio_merge_fn)
+ return e->type->ops.sq.elevator_allow_bio_merge_fn(q, rq, bio);
return 1;
}
@@ -163,6 +166,7 @@ struct elevator_queue *elevator_alloc(struct request_queue *q,
kobject_init(&eq->kobj, &elv_ktype);
mutex_init(&eq->sysfs_lock);
hash_init(eq->hash);
+ eq->uses_mq = e->uses_mq;
return eq;
}
@@ -203,11 +207,12 @@ int elevator_init(struct request_queue *q, char *name)
}
/*
- * Use the default elevator specified by config boot param or
- * config option. Don't try to load modules as we could be running
- * off async and request_module() isn't allowed from async.
+ * Use the default elevator specified by config boot param for
+ * non-mq devices, or by config option. Don't try to load modules
+ * as we could be running off async and request_module() isn't
+ * allowed from async.
*/
- if (!e && *chosen_elevator) {
+ if (!e && !q->mq_ops && *chosen_elevator) {
e = elevator_get(chosen_elevator, false);
if (!e)
printk(KERN_ERR "I/O scheduler %s not found\n",
@@ -215,18 +220,32 @@ int elevator_init(struct request_queue *q, char *name)
}
if (!e) {
- e = elevator_get(CONFIG_DEFAULT_IOSCHED, false);
+ if (q->mq_ops && q->nr_hw_queues == 1)
+ e = elevator_get(CONFIG_DEFAULT_SQ_IOSCHED, false);
+ else if (q->mq_ops)
+ e = elevator_get(CONFIG_DEFAULT_MQ_IOSCHED, false);
+ else
+ e = elevator_get(CONFIG_DEFAULT_IOSCHED, false);
+
if (!e) {
printk(KERN_ERR
"Default I/O scheduler not found. " \
- "Using noop.\n");
+ "Using noop/none.\n");
e = elevator_get("noop", false);
}
}
- err = e->ops.elevator_init_fn(q, e);
- if (err)
+ if (e->uses_mq) {
+ err = blk_mq_sched_setup(q);
+ if (!err)
+ err = e->ops.mq.init_sched(q, e);
+ } else
+ err = e->ops.sq.elevator_init_fn(q, e);
+ if (err) {
+ if (e->uses_mq)
+ blk_mq_sched_teardown(q);
elevator_put(e);
+ }
return err;
}
EXPORT_SYMBOL(elevator_init);
@@ -234,8 +253,10 @@ EXPORT_SYMBOL(elevator_init);
void elevator_exit(struct elevator_queue *e)
{
mutex_lock(&e->sysfs_lock);
- if (e->type->ops.elevator_exit_fn)
- e->type->ops.elevator_exit_fn(e);
+ if (e->uses_mq && e->type->ops.mq.exit_sched)
+ e->type->ops.mq.exit_sched(e);
+ else if (!e->uses_mq && e->type->ops.sq.elevator_exit_fn)
+ e->type->ops.sq.elevator_exit_fn(e);
mutex_unlock(&e->sysfs_lock);
kobject_put(&e->kobj);
@@ -253,6 +274,7 @@ void elv_rqhash_del(struct request_queue *q, struct request *rq)
if (ELV_ON_HASH(rq))
__elv_rqhash_del(rq);
}
+EXPORT_SYMBOL_GPL(elv_rqhash_del);
void elv_rqhash_add(struct request_queue *q, struct request *rq)
{
@@ -262,6 +284,7 @@ void elv_rqhash_add(struct request_queue *q, struct request *rq)
hash_add(e->hash, &rq->hash, rq_hash_key(rq));
rq->rq_flags |= RQF_HASHED;
}
+EXPORT_SYMBOL_GPL(elv_rqhash_add);
void elv_rqhash_reposition(struct request_queue *q, struct request *rq)
{
@@ -405,11 +428,11 @@ void elv_dispatch_add_tail(struct request_queue *q, struct request *rq)
}
EXPORT_SYMBOL(elv_dispatch_add_tail);
-int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
+enum elv_merge elv_merge(struct request_queue *q, struct request **req,
+ struct bio *bio)
{
struct elevator_queue *e = q->elevator;
struct request *__rq;
- int ret;
/*
* Levels of merges:
@@ -424,7 +447,8 @@ int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
* First try one-hit cache.
*/
if (q->last_merge && elv_bio_merge_ok(q->last_merge, bio)) {
- ret = blk_try_merge(q->last_merge, bio);
+ enum elv_merge ret = blk_try_merge(q->last_merge, bio);
+
if (ret != ELEVATOR_NO_MERGE) {
*req = q->last_merge;
return ret;
@@ -443,8 +467,10 @@ int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
return ELEVATOR_BACK_MERGE;
}
- if (e->type->ops.elevator_merge_fn)
- return e->type->ops.elevator_merge_fn(q, req, bio);
+ if (e->uses_mq && e->type->ops.mq.request_merge)
+ return e->type->ops.mq.request_merge(q, req, bio);
+ else if (!e->uses_mq && e->type->ops.sq.elevator_merge_fn)
+ return e->type->ops.sq.elevator_merge_fn(q, req, bio);
return ELEVATOR_NO_MERGE;
}
@@ -456,8 +482,7 @@ int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
*
* Returns true if we merged, false otherwise
*/
-static bool elv_attempt_insert_merge(struct request_queue *q,
- struct request *rq)
+bool elv_attempt_insert_merge(struct request_queue *q, struct request *rq)
{
struct request *__rq;
bool ret;
@@ -491,12 +516,15 @@ static bool elv_attempt_insert_merge(struct request_queue *q,
return ret;
}
-void elv_merged_request(struct request_queue *q, struct request *rq, int type)
+void elv_merged_request(struct request_queue *q, struct request *rq,
+ enum elv_merge type)
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_merged_fn)
- e->type->ops.elevator_merged_fn(q, rq, type);
+ if (e->uses_mq && e->type->ops.mq.request_merged)
+ e->type->ops.mq.request_merged(q, rq, type);
+ else if (!e->uses_mq && e->type->ops.sq.elevator_merged_fn)
+ e->type->ops.sq.elevator_merged_fn(q, rq, type);
if (type == ELEVATOR_BACK_MERGE)
elv_rqhash_reposition(q, rq);
@@ -508,10 +536,15 @@ void elv_merge_requests(struct request_queue *q, struct request *rq,
struct request *next)
{
struct elevator_queue *e = q->elevator;
- const int next_sorted = next->rq_flags & RQF_SORTED;
-
- if (next_sorted && e->type->ops.elevator_merge_req_fn)
- e->type->ops.elevator_merge_req_fn(q, rq, next);
+ bool next_sorted = false;
+
+ if (e->uses_mq && e->type->ops.mq.requests_merged)
+ e->type->ops.mq.requests_merged(q, rq, next);
+ else if (e->type->ops.sq.elevator_merge_req_fn) {
+ next_sorted = (__force bool)(next->rq_flags & RQF_SORTED);
+ if (next_sorted)
+ e->type->ops.sq.elevator_merge_req_fn(q, rq, next);
+ }
elv_rqhash_reposition(q, rq);
@@ -528,8 +561,11 @@ void elv_bio_merged(struct request_queue *q, struct request *rq,
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_bio_merged_fn)
- e->type->ops.elevator_bio_merged_fn(q, rq, bio);
+ if (WARN_ON_ONCE(e->uses_mq))
+ return;
+
+ if (e->type->ops.sq.elevator_bio_merged_fn)
+ e->type->ops.sq.elevator_bio_merged_fn(q, rq, bio);
}
#ifdef CONFIG_PM
@@ -574,11 +610,15 @@ void elv_requeue_request(struct request_queue *q, struct request *rq)
void elv_drain_elevator(struct request_queue *q)
{
+ struct elevator_queue *e = q->elevator;
static int printed;
+ if (WARN_ON_ONCE(e->uses_mq))
+ return;
+
lockdep_assert_held(q->queue_lock);
- while (q->elevator->type->ops.elevator_dispatch_fn(q, 1))
+ while (e->type->ops.sq.elevator_dispatch_fn(q, 1))
;
if (q->nr_sorted && printed++ < 10) {
printk(KERN_ERR "%s: forced dispatching is broken "
@@ -597,7 +637,7 @@ void __elv_add_request(struct request_queue *q, struct request *rq, int where)
if (rq->rq_flags & RQF_SOFTBARRIER) {
/* barriers are scheduling boundary, update end_sector */
- if (rq->cmd_type == REQ_TYPE_FS) {
+ if (!blk_rq_is_passthrough(rq)) {
q->end_sector = rq_end_sector(rq);
q->boundary_rq = rq;
}
@@ -639,7 +679,7 @@ void __elv_add_request(struct request_queue *q, struct request *rq, int where)
if (elv_attempt_insert_merge(q, rq))
break;
case ELEVATOR_INSERT_SORT:
- BUG_ON(rq->cmd_type != REQ_TYPE_FS);
+ BUG_ON(blk_rq_is_passthrough(rq));
rq->rq_flags |= RQF_SORTED;
q->nr_sorted++;
if (rq_mergeable(rq)) {
@@ -653,7 +693,7 @@ void __elv_add_request(struct request_queue *q, struct request *rq, int where)
* rq cannot be accessed after calling
* elevator_add_req_fn.
*/
- q->elevator->type->ops.elevator_add_req_fn(q, rq);
+ q->elevator->type->ops.sq.elevator_add_req_fn(q, rq);
break;
case ELEVATOR_INSERT_FLUSH:
@@ -682,8 +722,11 @@ struct request *elv_latter_request(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_latter_req_fn)
- return e->type->ops.elevator_latter_req_fn(q, rq);
+ if (e->uses_mq && e->type->ops.mq.next_request)
+ return e->type->ops.mq.next_request(q, rq);
+ else if (!e->uses_mq && e->type->ops.sq.elevator_latter_req_fn)
+ return e->type->ops.sq.elevator_latter_req_fn(q, rq);
+
return NULL;
}
@@ -691,8 +734,10 @@ struct request *elv_former_request(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_former_req_fn)
- return e->type->ops.elevator_former_req_fn(q, rq);
+ if (e->uses_mq && e->type->ops.mq.former_request)
+ return e->type->ops.mq.former_request(q, rq);
+ if (!e->uses_mq && e->type->ops.sq.elevator_former_req_fn)
+ return e->type->ops.sq.elevator_former_req_fn(q, rq);
return NULL;
}
@@ -701,8 +746,11 @@ int elv_set_request(struct request_queue *q, struct request *rq,
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_set_req_fn)
- return e->type->ops.elevator_set_req_fn(q, rq, bio, gfp_mask);
+ if (WARN_ON_ONCE(e->uses_mq))
+ return 0;
+
+ if (e->type->ops.sq.elevator_set_req_fn)
+ return e->type->ops.sq.elevator_set_req_fn(q, rq, bio, gfp_mask);
return 0;
}
@@ -710,16 +758,22 @@ void elv_put_request(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_put_req_fn)
- e->type->ops.elevator_put_req_fn(rq);
+ if (WARN_ON_ONCE(e->uses_mq))
+ return;
+
+ if (e->type->ops.sq.elevator_put_req_fn)
+ e->type->ops.sq.elevator_put_req_fn(rq);
}
int elv_may_queue(struct request_queue *q, unsigned int op)
{
struct elevator_queue *e = q->elevator;
- if (e->type->ops.elevator_may_queue_fn)
- return e->type->ops.elevator_may_queue_fn(q, op);
+ if (WARN_ON_ONCE(e->uses_mq))
+ return 0;
+
+ if (e->type->ops.sq.elevator_may_queue_fn)
+ return e->type->ops.sq.elevator_may_queue_fn(q, op);
return ELV_MQUEUE_MAY;
}
@@ -728,14 +782,17 @@ void elv_completed_request(struct request_queue *q, struct request *rq)
{
struct elevator_queue *e = q->elevator;
+ if (WARN_ON_ONCE(e->uses_mq))
+ return;
+
/*
* request is released from the driver, io must be done
*/
if (blk_account_rq(rq)) {
q->in_flight[rq_is_sync(rq)]--;
if ((rq->rq_flags & RQF_SORTED) &&
- e->type->ops.elevator_completed_req_fn)
- e->type->ops.elevator_completed_req_fn(q, rq);
+ e->type->ops.sq.elevator_completed_req_fn)
+ e->type->ops.sq.elevator_completed_req_fn(q, rq);
}
}
@@ -803,8 +860,8 @@ int elv_register_queue(struct request_queue *q)
}
kobject_uevent(&e->kobj, KOBJ_ADD);
e->registered = 1;
- if (e->type->ops.elevator_registered_fn)
- e->type->ops.elevator_registered_fn(q);
+ if (!e->uses_mq && e->type->ops.sq.elevator_registered_fn)
+ e->type->ops.sq.elevator_registered_fn(q);
}
return error;
}
@@ -891,9 +948,14 @@ EXPORT_SYMBOL_GPL(elv_unregister);
static int elevator_switch(struct request_queue *q, struct elevator_type *new_e)
{
struct elevator_queue *old = q->elevator;
- bool registered = old->registered;
+ bool old_registered = false;
int err;
+ if (q->mq_ops) {
+ blk_mq_freeze_queue(q);
+ blk_mq_quiesce_queue(q);
+ }
+
/*
* Turn on BYPASS and drain all requests w/ elevator private data.
* Block layer doesn't call into a quiesced elevator - all requests
@@ -901,42 +963,76 @@ static int elevator_switch(struct request_queue *q, struct elevator_type *new_e)
* using INSERT_BACK. All requests have SOFTBARRIER set and no
* merge happens either.
*/
- blk_queue_bypass_start(q);
+ if (old) {
+ old_registered = old->registered;
+
+ if (old->uses_mq)
+ blk_mq_sched_teardown(q);
+
+ if (!q->mq_ops)
+ blk_queue_bypass_start(q);
- /* unregister and clear all auxiliary data of the old elevator */
- if (registered)
- elv_unregister_queue(q);
+ /* unregister and clear all auxiliary data of the old elevator */
+ if (old_registered)
+ elv_unregister_queue(q);
- spin_lock_irq(q->queue_lock);
- ioc_clear_queue(q);
- spin_unlock_irq(q->queue_lock);
+ spin_lock_irq(q->queue_lock);
+ ioc_clear_queue(q);
+ spin_unlock_irq(q->queue_lock);
+ }
/* allocate, init and register new elevator */
- err = new_e->ops.elevator_init_fn(q, new_e);
- if (err)
- goto fail_init;
+ if (new_e) {
+ if (new_e->uses_mq) {
+ err = blk_mq_sched_setup(q);
+ if (!err)
+ err = new_e->ops.mq.init_sched(q, new_e);
+ } else
+ err = new_e->ops.sq.elevator_init_fn(q, new_e);
+ if (err)
+ goto fail_init;
- if (registered) {
err = elv_register_queue(q);
if (err)
goto fail_register;
- }
+ } else
+ q->elevator = NULL;
/* done, kill the old one and finish */
- elevator_exit(old);
- blk_queue_bypass_end(q);
+ if (old) {
+ elevator_exit(old);
+ if (!q->mq_ops)
+ blk_queue_bypass_end(q);
+ }
- blk_add_trace_msg(q, "elv switch: %s", new_e->elevator_name);
+ if (q->mq_ops) {
+ blk_mq_unfreeze_queue(q);
+ blk_mq_start_stopped_hw_queues(q, true);
+ }
+
+ if (new_e)
+ blk_add_trace_msg(q, "elv switch: %s", new_e->elevator_name);
+ else
+ blk_add_trace_msg(q, "elv switch: none");
return 0;
fail_register:
+ if (q->mq_ops)
+ blk_mq_sched_teardown(q);
elevator_exit(q->elevator);
fail_init:
/* switch failed, restore and re-register old elevator */
- q->elevator = old;
- elv_register_queue(q);
- blk_queue_bypass_end(q);
+ if (old) {
+ q->elevator = old;
+ elv_register_queue(q);
+ if (!q->mq_ops)
+ blk_queue_bypass_end(q);
+ }
+ if (q->mq_ops) {
+ blk_mq_unfreeze_queue(q);
+ blk_mq_start_stopped_hw_queues(q, true);
+ }
return err;
}
@@ -949,8 +1045,11 @@ static int __elevator_change(struct request_queue *q, const char *name)
char elevator_name[ELV_NAME_MAX];
struct elevator_type *e;
- if (!q->elevator)
- return -ENXIO;
+ /*
+ * Special case for mq, turn off scheduling
+ */
+ if (q->mq_ops && !strncmp(name, "none", 4))
+ return elevator_switch(q, NULL);
strlcpy(elevator_name, name, sizeof(elevator_name));
e = elevator_get(strstrip(elevator_name), true);
@@ -959,11 +1058,21 @@ static int __elevator_change(struct request_queue *q, const char *name)
return -EINVAL;
}
- if (!strcmp(elevator_name, q->elevator->type->elevator_name)) {
+ if (q->elevator &&
+ !strcmp(elevator_name, q->elevator->type->elevator_name)) {
elevator_put(e);
return 0;
}
+ if (!e->uses_mq && q->mq_ops) {
+ elevator_put(e);
+ return -EINVAL;
+ }
+ if (e->uses_mq && !q->mq_ops) {
+ elevator_put(e);
+ return -EINVAL;
+ }
+
return elevator_switch(q, e);
}
@@ -985,7 +1094,7 @@ ssize_t elv_iosched_store(struct request_queue *q, const char *name,
{
int ret;
- if (!q->elevator)
+ if (!(q->mq_ops || q->request_fn))
return count;
ret = __elevator_change(q, name);
@@ -999,24 +1108,34 @@ ssize_t elv_iosched_store(struct request_queue *q, const char *name,
ssize_t elv_iosched_show(struct request_queue *q, char *name)
{
struct elevator_queue *e = q->elevator;
- struct elevator_type *elv;
+ struct elevator_type *elv = NULL;
struct elevator_type *__e;
int len = 0;
- if (!q->elevator || !blk_queue_stackable(q))
+ if (!blk_queue_stackable(q))
return sprintf(name, "none\n");
- elv = e->type;
+ if (!q->elevator)
+ len += sprintf(name+len, "[none] ");
+ else
+ elv = e->type;
spin_lock(&elv_list_lock);
list_for_each_entry(__e, &elv_list, list) {
- if (!strcmp(elv->elevator_name, __e->elevator_name))
+ if (elv && !strcmp(elv->elevator_name, __e->elevator_name)) {
len += sprintf(name+len, "[%s] ", elv->elevator_name);
- else
+ continue;
+ }
+ if (__e->uses_mq && q->mq_ops)
+ len += sprintf(name+len, "%s ", __e->elevator_name);
+ else if (!__e->uses_mq && !q->mq_ops)
len += sprintf(name+len, "%s ", __e->elevator_name);
}
spin_unlock(&elv_list_lock);
+ if (q->mq_ops && q->elevator)
+ len += sprintf(name+len, "none");
+
len += sprintf(len+name, "\n");
return len;
}
diff --git a/block/genhd.c b/block/genhd.c
index fcd6d4f..3631cd4 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -572,6 +572,20 @@ exit:
disk_part_iter_exit(&piter);
}
+void put_disk_devt(struct disk_devt *disk_devt)
+{
+ if (disk_devt && atomic_dec_and_test(&disk_devt->count))
+ disk_devt->release(disk_devt);
+}
+EXPORT_SYMBOL(put_disk_devt);
+
+void get_disk_devt(struct disk_devt *disk_devt)
+{
+ if (disk_devt)
+ atomic_inc(&disk_devt->count);
+}
+EXPORT_SYMBOL(get_disk_devt);
+
/**
* device_add_disk - add partitioning information to kernel list
* @parent: parent device for the disk
@@ -612,8 +626,15 @@ void device_add_disk(struct device *parent, struct gendisk *disk)
disk_alloc_events(disk);
+ /*
+ * Take a reference on the devt and assign it to queue since it
+ * must not be reallocated while the bdi is registered
+ */
+ disk->queue->disk_devt = disk->disk_devt;
+ get_disk_devt(disk->disk_devt);
+
/* Register BDI before referencing it from bdev */
- bdi = &disk->queue->backing_dev_info;
+ bdi = disk->queue->backing_dev_info;
bdi_register_owner(bdi, disk_to_dev(disk));
blk_register_region(disk_devt(disk), disk->minors, NULL,
@@ -648,6 +669,8 @@ void del_gendisk(struct gendisk *disk)
disk_part_iter_init(&piter, disk,
DISK_PITER_INCL_EMPTY | DISK_PITER_REVERSE);
while ((part = disk_part_iter_next(&piter))) {
+ bdev_unhash_inode(MKDEV(disk->major,
+ disk->first_minor + part->partno));
invalidate_partition(disk, part->partno);
delete_partition(disk, part->partno);
}
diff --git a/block/ioctl.c b/block/ioctl.c
index be7f4de..7b88820 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -505,7 +505,6 @@ static int blkdev_bszset(struct block_device *bdev, fmode_t mode,
int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
unsigned long arg)
{
- struct backing_dev_info *bdi;
void __user *argp = (void __user *)arg;
loff_t size;
unsigned int max_sectors;
@@ -532,8 +531,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
case BLKFRAGET:
if (!arg)
return -EINVAL;
- bdi = blk_get_backing_dev_info(bdev);
- return put_long(arg, (bdi->ra_pages * PAGE_SIZE) / 512);
+ return put_long(arg, (bdev->bd_bdi->ra_pages*PAGE_SIZE) / 512);
case BLKROGET:
return put_int(arg, bdev_read_only(bdev) != 0);
case BLKBSZGET: /* get block device soft block size (cf. BLKSSZGET) */
@@ -560,8 +558,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
case BLKFRASET:
if(!capable(CAP_SYS_ADMIN))
return -EACCES;
- bdi = blk_get_backing_dev_info(bdev);
- bdi->ra_pages = (arg * 512) / PAGE_SIZE;
+ bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;
return 0;
case BLKBSZSET:
return blkdev_bszset(bdev, mode, argp);
diff --git a/block/mq-deadline.c b/block/mq-deadline.c
new file mode 100644
index 0000000..23612163
--- /dev/null
+++ b/block/mq-deadline.c
@@ -0,0 +1,556 @@
+/*
+ * MQ Deadline i/o scheduler - adaptation of the legacy deadline scheduler,
+ * for the blk-mq scheduling framework
+ *
+ * Copyright (C) 2016 Jens Axboe <axboe@kernel.dk>
+ */
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
+#include <linux/elevator.h>
+#include <linux/bio.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/compiler.h>
+#include <linux/rbtree.h>
+#include <linux/sbitmap.h>
+
+#include "blk.h"
+#include "blk-mq.h"
+#include "blk-mq-tag.h"
+#include "blk-mq-sched.h"
+
+/*
+ * See Documentation/block/deadline-iosched.txt
+ */
+static const int read_expire = HZ / 2; /* max time before a read is submitted. */
+static const int write_expire = 5 * HZ; /* ditto for writes, these limits are SOFT! */
+static const int writes_starved = 2; /* max times reads can starve a write */
+static const int fifo_batch = 16; /* # of sequential requests treated as one
+ by the above parameters. For throughput. */
+
+struct deadline_data {
+ /*
+ * run time data
+ */
+
+ /*
+ * requests (deadline_rq s) are present on both sort_list and fifo_list
+ */
+ struct rb_root sort_list[2];
+ struct list_head fifo_list[2];
+
+ /*
+ * next in sort order. read, write or both are NULL
+ */
+ struct request *next_rq[2];
+ unsigned int batching; /* number of sequential requests made */
+ unsigned int starved; /* times reads have starved writes */
+
+ /*
+ * settings that change how the i/o scheduler behaves
+ */
+ int fifo_expire[2];
+ int fifo_batch;
+ int writes_starved;
+ int front_merges;
+
+ spinlock_t lock;
+ struct list_head dispatch;
+};
+
+static inline struct rb_root *
+deadline_rb_root(struct deadline_data *dd, struct request *rq)
+{
+ return &dd->sort_list[rq_data_dir(rq)];
+}
+
+/*
+ * get the request after `rq' in sector-sorted order
+ */
+static inline struct request *
+deadline_latter_request(struct request *rq)
+{
+ struct rb_node *node = rb_next(&rq->rb_node);
+
+ if (node)
+ return rb_entry_rq(node);
+
+ return NULL;
+}
+
+static void
+deadline_add_rq_rb(struct deadline_data *dd, struct request *rq)
+{
+ struct rb_root *root = deadline_rb_root(dd, rq);
+
+ elv_rb_add(root, rq);
+}
+
+static inline void
+deadline_del_rq_rb(struct deadline_data *dd, struct request *rq)
+{
+ const int data_dir = rq_data_dir(rq);
+
+ if (dd->next_rq[data_dir] == rq)
+ dd->next_rq[data_dir] = deadline_latter_request(rq);
+
+ elv_rb_del(deadline_rb_root(dd, rq), rq);
+}
+
+/*
+ * remove rq from rbtree and fifo.
+ */
+static void deadline_remove_request(struct request_queue *q, struct request *rq)
+{
+ struct deadline_data *dd = q->elevator->elevator_data;
+
+ list_del_init(&rq->queuelist);
+
+ /*
+ * We might not be on the rbtree, if we are doing an insert merge
+ */
+ if (!RB_EMPTY_NODE(&rq->rb_node))
+ deadline_del_rq_rb(dd, rq);
+
+ elv_rqhash_del(q, rq);
+ if (q->last_merge == rq)
+ q->last_merge = NULL;
+}
+
+static void dd_request_merged(struct request_queue *q, struct request *req,
+ enum elv_merge type)
+{
+ struct deadline_data *dd = q->elevator->elevator_data;
+
+ /*
+ * if the merge was a front merge, we need to reposition request
+ */
+ if (type == ELEVATOR_FRONT_MERGE) {
+ elv_rb_del(deadline_rb_root(dd, req), req);
+ deadline_add_rq_rb(dd, req);
+ }
+}
+
+static void dd_merged_requests(struct request_queue *q, struct request *req,
+ struct request *next)
+{
+ /*
+ * if next expires before rq, assign its expire time to rq
+ * and move into next position (next will be deleted) in fifo
+ */
+ if (!list_empty(&req->queuelist) && !list_empty(&next->queuelist)) {
+ if (time_before((unsigned long)next->fifo_time,
+ (unsigned long)req->fifo_time)) {
+ list_move(&req->queuelist, &next->queuelist);
+ req->fifo_time = next->fifo_time;
+ }
+ }
+
+ /*
+ * kill knowledge of next, this one is a goner
+ */
+ deadline_remove_request(q, next);
+}
+
+/*
+ * move an entry to dispatch queue
+ */
+static void
+deadline_move_request(struct deadline_data *dd, struct request *rq)
+{
+ const int data_dir = rq_data_dir(rq);
+
+ dd->next_rq[READ] = NULL;
+ dd->next_rq[WRITE] = NULL;
+ dd->next_rq[data_dir] = deadline_latter_request(rq);
+
+ /*
+ * take it off the sort and fifo list
+ */
+ deadline_remove_request(rq->q, rq);
+}
+
+/*
+ * deadline_check_fifo returns 0 if there are no expired requests on the fifo,
+ * 1 otherwise. Requires !list_empty(&dd->fifo_list[data_dir])
+ */
+static inline int deadline_check_fifo(struct deadline_data *dd, int ddir)
+{
+ struct request *rq = rq_entry_fifo(dd->fifo_list[ddir].next);
+
+ /*
+ * rq is expired!
+ */
+ if (time_after_eq(jiffies, (unsigned long)rq->fifo_time))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * deadline_dispatch_requests selects the best request according to
+ * read/write expire, fifo_batch, etc
+ */
+static struct request *__dd_dispatch_request(struct blk_mq_hw_ctx *hctx)
+{
+ struct deadline_data *dd = hctx->queue->elevator->elevator_data;
+ struct request *rq;
+ bool reads, writes;
+ int data_dir;
+
+ if (!list_empty(&dd->dispatch)) {
+ rq = list_first_entry(&dd->dispatch, struct request, queuelist);
+ list_del_init(&rq->queuelist);
+ goto done;
+ }
+
+ reads = !list_empty(&dd->fifo_list[READ]);
+ writes = !list_empty(&dd->fifo_list[WRITE]);
+
+ /*
+ * batches are currently reads XOR writes
+ */
+ if (dd->next_rq[WRITE])
+ rq = dd->next_rq[WRITE];
+ else
+ rq = dd->next_rq[READ];
+
+ if (rq && dd->batching < dd->fifo_batch)
+ /* we have a next request are still entitled to batch */
+ goto dispatch_request;
+
+ /*
+ * at this point we are not running a batch. select the appropriate
+ * data direction (read / write)
+ */
+
+ if (reads) {
+ BUG_ON(RB_EMPTY_ROOT(&dd->sort_list[READ]));
+
+ if (writes && (dd->starved++ >= dd->writes_starved))
+ goto dispatch_writes;
+
+ data_dir = READ;
+
+ goto dispatch_find_request;
+ }
+
+ /*
+ * there are either no reads or writes have been starved
+ */
+
+ if (writes) {
+dispatch_writes:
+ BUG_ON(RB_EMPTY_ROOT(&dd->sort_list[WRITE]));
+
+ dd->starved = 0;
+
+ data_dir = WRITE;
+
+ goto dispatch_find_request;
+ }
+
+ return NULL;
+
+dispatch_find_request:
+ /*
+ * we are not running a batch, find best request for selected data_dir
+ */
+ if (deadline_check_fifo(dd, data_dir) || !dd->next_rq[data_dir]) {
+ /*
+ * A deadline has expired, the last request was in the other
+ * direction, or we have run out of higher-sectored requests.
+ * Start again from the request with the earliest expiry time.
+ */
+ rq = rq_entry_fifo(dd->fifo_list[data_dir].next);
+ } else {
+ /*
+ * The last req was the same dir and we have a next request in
+ * sort order. No expired requests so continue on from here.
+ */
+ rq = dd->next_rq[data_dir];
+ }
+
+ dd->batching = 0;
+
+dispatch_request:
+ /*
+ * rq is the selected appropriate request.
+ */
+ dd->batching++;
+ deadline_move_request(dd, rq);
+done:
+ rq->rq_flags |= RQF_STARTED;
+ return rq;
+}
+
+static struct request *dd_dispatch_request(struct blk_mq_hw_ctx *hctx)
+{
+ struct deadline_data *dd = hctx->queue->elevator->elevator_data;
+ struct request *rq;
+
+ spin_lock(&dd->lock);
+ rq = __dd_dispatch_request(hctx);
+ spin_unlock(&dd->lock);
+
+ return rq;
+}
+
+static void dd_exit_queue(struct elevator_queue *e)
+{
+ struct deadline_data *dd = e->elevator_data;
+
+ BUG_ON(!list_empty(&dd->fifo_list[READ]));
+ BUG_ON(!list_empty(&dd->fifo_list[WRITE]));
+
+ kfree(dd);
+}
+
+/*
+ * initialize elevator private data (deadline_data).
+ */
+static int dd_init_queue(struct request_queue *q, struct elevator_type *e)
+{
+ struct deadline_data *dd;
+ struct elevator_queue *eq;
+
+ eq = elevator_alloc(q, e);
+ if (!eq)
+ return -ENOMEM;
+
+ dd = kzalloc_node(sizeof(*dd), GFP_KERNEL, q->node);
+ if (!dd) {
+ kobject_put(&eq->kobj);
+ return -ENOMEM;
+ }
+ eq->elevator_data = dd;
+
+ INIT_LIST_HEAD(&dd->fifo_list[READ]);
+ INIT_LIST_HEAD(&dd->fifo_list[WRITE]);
+ dd->sort_list[READ] = RB_ROOT;
+ dd->sort_list[WRITE] = RB_ROOT;
+ dd->fifo_expire[READ] = read_expire;
+ dd->fifo_expire[WRITE] = write_expire;
+ dd->writes_starved = writes_starved;
+ dd->front_merges = 1;
+ dd->fifo_batch = fifo_batch;
+ spin_lock_init(&dd->lock);
+ INIT_LIST_HEAD(&dd->dispatch);
+
+ q->elevator = eq;
+ return 0;
+}
+
+static int dd_request_merge(struct request_queue *q, struct request **rq,
+ struct bio *bio)
+{
+ struct deadline_data *dd = q->elevator->elevator_data;
+ sector_t sector = bio_end_sector(bio);
+ struct request *__rq;
+
+ if (!dd->front_merges)
+ return ELEVATOR_NO_MERGE;
+
+ __rq = elv_rb_find(&dd->sort_list[bio_data_dir(bio)], sector);
+ if (__rq) {
+ BUG_ON(sector != blk_rq_pos(__rq));
+
+ if (elv_bio_merge_ok(__rq, bio)) {
+ *rq = __rq;
+ return ELEVATOR_FRONT_MERGE;
+ }
+ }
+
+ return ELEVATOR_NO_MERGE;
+}
+
+static bool dd_bio_merge(struct blk_mq_hw_ctx *hctx, struct bio *bio)
+{
+ struct request_queue *q = hctx->queue;
+ struct deadline_data *dd = q->elevator->elevator_data;
+ struct request *free = NULL;
+ bool ret;
+
+ spin_lock(&dd->lock);
+ ret = blk_mq_sched_try_merge(q, bio, &free);
+ spin_unlock(&dd->lock);
+
+ if (free)
+ blk_mq_free_request(free);
+
+ return ret;
+}
+
+/*
+ * add rq to rbtree and fifo
+ */
+static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
+ bool at_head)
+{
+ struct request_queue *q = hctx->queue;
+ struct deadline_data *dd = q->elevator->elevator_data;
+ const int data_dir = rq_data_dir(rq);
+
+ if (blk_mq_sched_try_insert_merge(q, rq))
+ return;
+
+ blk_mq_sched_request_inserted(rq);
+
+ if (at_head || blk_rq_is_passthrough(rq)) {
+ if (at_head)
+ list_add(&rq->queuelist, &dd->dispatch);
+ else
+ list_add_tail(&rq->queuelist, &dd->dispatch);
+ } else {
+ deadline_add_rq_rb(dd, rq);
+
+ if (rq_mergeable(rq)) {
+ elv_rqhash_add(q, rq);
+ if (!q->last_merge)
+ q->last_merge = rq;
+ }
+
+ /*
+ * set expire time and add to fifo list
+ */
+ rq->fifo_time = jiffies + dd->fifo_expire[data_dir];
+ list_add_tail(&rq->queuelist, &dd->fifo_list[data_dir]);
+ }
+}
+
+static void dd_insert_requests(struct blk_mq_hw_ctx *hctx,
+ struct list_head *list, bool at_head)
+{
+ struct request_queue *q = hctx->queue;
+ struct deadline_data *dd = q->elevator->elevator_data;
+
+ spin_lock(&dd->lock);
+ while (!list_empty(list)) {
+ struct request *rq;
+
+ rq = list_first_entry(list, struct request, queuelist);
+ list_del_init(&rq->queuelist);
+ dd_insert_request(hctx, rq, at_head);
+ }
+ spin_unlock(&dd->lock);
+}
+
+static bool dd_has_work(struct blk_mq_hw_ctx *hctx)
+{
+ struct deadline_data *dd = hctx->queue->elevator->elevator_data;
+
+ return !list_empty_careful(&dd->dispatch) ||
+ !list_empty_careful(&dd->fifo_list[0]) ||
+ !list_empty_careful(&dd->fifo_list[1]);
+}
+
+/*
+ * sysfs parts below
+ */
+static ssize_t
+deadline_var_show(int var, char *page)
+{
+ return sprintf(page, "%d\n", var);
+}
+
+static ssize_t
+deadline_var_store(int *var, const char *page, size_t count)
+{
+ char *p = (char *) page;
+
+ *var = simple_strtol(p, &p, 10);
+ return count;
+}
+
+#define SHOW_FUNCTION(__FUNC, __VAR, __CONV) \
+static ssize_t __FUNC(struct elevator_queue *e, char *page) \
+{ \
+ struct deadline_data *dd = e->elevator_data; \
+ int __data = __VAR; \
+ if (__CONV) \
+ __data = jiffies_to_msecs(__data); \
+ return deadline_var_show(__data, (page)); \
+}
+SHOW_FUNCTION(deadline_read_expire_show, dd->fifo_expire[READ], 1);
+SHOW_FUNCTION(deadline_write_expire_show, dd->fifo_expire[WRITE], 1);
+SHOW_FUNCTION(deadline_writes_starved_show, dd->writes_starved, 0);
+SHOW_FUNCTION(deadline_front_merges_show, dd->front_merges, 0);
+SHOW_FUNCTION(deadline_fifo_batch_show, dd->fifo_batch, 0);
+#undef SHOW_FUNCTION
+
+#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \
+static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count) \
+{ \
+ struct deadline_data *dd = e->elevator_data; \
+ int __data; \
+ int ret = deadline_var_store(&__data, (page), count); \
+ if (__data < (MIN)) \
+ __data = (MIN); \
+ else if (__data > (MAX)) \
+ __data = (MAX); \
+ if (__CONV) \
+ *(__PTR) = msecs_to_jiffies(__data); \
+ else \
+ *(__PTR) = __data; \
+ return ret; \
+}
+STORE_FUNCTION(deadline_read_expire_store, &dd->fifo_expire[READ], 0, INT_MAX, 1);
+STORE_FUNCTION(deadline_write_expire_store, &dd->fifo_expire[WRITE], 0, INT_MAX, 1);
+STORE_FUNCTION(deadline_writes_starved_store, &dd->writes_starved, INT_MIN, INT_MAX, 0);
+STORE_FUNCTION(deadline_front_merges_store, &dd->front_merges, 0, 1, 0);
+STORE_FUNCTION(deadline_fifo_batch_store, &dd->fifo_batch, 0, INT_MAX, 0);
+#undef STORE_FUNCTION
+
+#define DD_ATTR(name) \
+ __ATTR(name, S_IRUGO|S_IWUSR, deadline_##name##_show, \
+ deadline_##name##_store)
+
+static struct elv_fs_entry deadline_attrs[] = {
+ DD_ATTR(read_expire),
+ DD_ATTR(write_expire),
+ DD_ATTR(writes_starved),
+ DD_ATTR(front_merges),
+ DD_ATTR(fifo_batch),
+ __ATTR_NULL
+};
+
+static struct elevator_type mq_deadline = {
+ .ops.mq = {
+ .insert_requests = dd_insert_requests,
+ .dispatch_request = dd_dispatch_request,
+ .next_request = elv_rb_latter_request,
+ .former_request = elv_rb_former_request,
+ .bio_merge = dd_bio_merge,
+ .request_merge = dd_request_merge,
+ .requests_merged = dd_merged_requests,
+ .request_merged = dd_request_merged,
+ .has_work = dd_has_work,
+ .init_sched = dd_init_queue,
+ .exit_sched = dd_exit_queue,
+ },
+
+ .uses_mq = true,
+ .elevator_attrs = deadline_attrs,
+ .elevator_name = "mq-deadline",
+ .elevator_owner = THIS_MODULE,
+};
+
+static int __init deadline_init(void)
+{
+ return elv_register(&mq_deadline);
+}
+
+static void __exit deadline_exit(void)
+{
+ elv_unregister(&mq_deadline);
+}
+
+module_init(deadline_init);
+module_exit(deadline_exit);
+
+MODULE_AUTHOR("Jens Axboe");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MQ deadline IO scheduler");
diff --git a/block/noop-iosched.c b/block/noop-iosched.c
index a163c48..2d1b15d 100644
--- a/block/noop-iosched.c
+++ b/block/noop-iosched.c
@@ -92,7 +92,7 @@ static void noop_exit_queue(struct elevator_queue *e)
}
static struct elevator_type elevator_noop = {
- .ops = {
+ .ops.sq = {
.elevator_merge_req_fn = noop_merged_requests,
.elevator_dispatch_fn = noop_dispatch,
.elevator_add_req_fn = noop_add_request,
diff --git a/block/opal_proto.h b/block/opal_proto.h
new file mode 100644
index 0000000..f40c9ac
--- /dev/null
+++ b/block/opal_proto.h
@@ -0,0 +1,452 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Authors:
+ * Rafael Antognolli <rafael.antognolli@intel.com>
+ * Scott Bauer <scott.bauer@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+#include <linux/types.h>
+
+#ifndef _OPAL_PROTO_H
+#define _OPAL_PROTO_H
+
+/*
+ * These constant values come from:
+ * SPC-4 section
+ * 6.30 SECURITY PROTOCOL IN command / table 265.
+ */
+enum {
+ TCG_SECP_00 = 0,
+ TCG_SECP_01,
+};
+
+/*
+ * Token defs derived from:
+ * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * 3.2.2 Data Stream Encoding
+ */
+enum opal_response_token {
+ OPAL_DTA_TOKENID_BYTESTRING = 0xe0,
+ OPAL_DTA_TOKENID_SINT = 0xe1,
+ OPAL_DTA_TOKENID_UINT = 0xe2,
+ OPAL_DTA_TOKENID_TOKEN = 0xe3, /* actual token is returned */
+ OPAL_DTA_TOKENID_INVALID = 0X0
+};
+
+#define DTAERROR_NO_METHOD_STATUS 0x89
+#define GENERIC_HOST_SESSION_NUM 0x41
+
+#define TPER_SYNC_SUPPORTED 0x01
+
+#define TINY_ATOM_DATA_MASK 0x3F
+#define TINY_ATOM_SIGNED 0x40
+
+#define SHORT_ATOM_ID 0x80
+#define SHORT_ATOM_BYTESTRING 0x20
+#define SHORT_ATOM_SIGNED 0x10
+#define SHORT_ATOM_LEN_MASK 0xF
+
+#define MEDIUM_ATOM_ID 0xC0
+#define MEDIUM_ATOM_BYTESTRING 0x10
+#define MEDIUM_ATOM_SIGNED 0x8
+#define MEDIUM_ATOM_LEN_MASK 0x7
+
+#define LONG_ATOM_ID 0xe0
+#define LONG_ATOM_BYTESTRING 0x2
+#define LONG_ATOM_SIGNED 0x1
+
+/* Derived from TCG Core spec 2.01 Section:
+ * 3.2.2.1
+ * Data Type
+ */
+#define TINY_ATOM_BYTE 0x7F
+#define SHORT_ATOM_BYTE 0xBF
+#define MEDIUM_ATOM_BYTE 0xDF
+#define LONG_ATOM_BYTE 0xE3
+
+#define OPAL_INVAL_PARAM 12
+#define OPAL_MANUFACTURED_INACTIVE 0x08
+#define OPAL_DISCOVERY_COMID 0x0001
+
+#define LOCKING_RANGE_NON_GLOBAL 0x03
+/*
+ * User IDs used in the TCG storage SSCs
+ * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Section: 6.3 Assigned UIDs
+ */
+#define OPAL_UID_LENGTH 8
+#define OPAL_METHOD_LENGTH 8
+#define OPAL_MSID_KEYLEN 15
+#define OPAL_UID_LENGTH_HALF 4
+
+/* Enum to index OPALUID array */
+enum opal_uid {
+ /* users */
+ OPAL_SMUID_UID,
+ OPAL_THISSP_UID,
+ OPAL_ADMINSP_UID,
+ OPAL_LOCKINGSP_UID,
+ OPAL_ENTERPRISE_LOCKINGSP_UID,
+ OPAL_ANYBODY_UID,
+ OPAL_SID_UID,
+ OPAL_ADMIN1_UID,
+ OPAL_USER1_UID,
+ OPAL_USER2_UID,
+ OPAL_PSID_UID,
+ OPAL_ENTERPRISE_BANDMASTER0_UID,
+ OPAL_ENTERPRISE_ERASEMASTER_UID,
+ /* tables */
+ OPAL_LOCKINGRANGE_GLOBAL,
+ OPAL_LOCKINGRANGE_ACE_RDLOCKED,
+ OPAL_LOCKINGRANGE_ACE_WRLOCKED,
+ OPAL_MBRCONTROL,
+ OPAL_MBR,
+ OPAL_AUTHORITY_TABLE,
+ OPAL_C_PIN_TABLE,
+ OPAL_LOCKING_INFO_TABLE,
+ OPAL_ENTERPRISE_LOCKING_INFO_TABLE,
+ /* C_PIN_TABLE object ID's */
+ OPAL_C_PIN_MSID,
+ OPAL_C_PIN_SID,
+ OPAL_C_PIN_ADMIN1,
+ /* half UID's (only first 4 bytes used) */
+ OPAL_HALF_UID_AUTHORITY_OBJ_REF,
+ OPAL_HALF_UID_BOOLEAN_ACE,
+ /* omitted optional parameter */
+ OPAL_UID_HEXFF,
+};
+
+#define OPAL_METHOD_LENGTH 8
+
+/* Enum for indexing the OPALMETHOD array */
+enum opal_method {
+ OPAL_PROPERTIES,
+ OPAL_STARTSESSION,
+ OPAL_REVERT,
+ OPAL_ACTIVATE,
+ OPAL_EGET,
+ OPAL_ESET,
+ OPAL_NEXT,
+ OPAL_EAUTHENTICATE,
+ OPAL_GETACL,
+ OPAL_GENKEY,
+ OPAL_REVERTSP,
+ OPAL_GET,
+ OPAL_SET,
+ OPAL_AUTHENTICATE,
+ OPAL_RANDOM,
+ OPAL_ERASE,
+};
+
+enum opal_token {
+ /* Boolean */
+ OPAL_TRUE = 0x01,
+ OPAL_FALSE = 0x00,
+ OPAL_BOOLEAN_EXPR = 0x03,
+ /* cellblocks */
+ OPAL_TABLE = 0x00,
+ OPAL_STARTROW = 0x01,
+ OPAL_ENDROW = 0x02,
+ OPAL_STARTCOLUMN = 0x03,
+ OPAL_ENDCOLUMN = 0x04,
+ OPAL_VALUES = 0x01,
+ /* authority table */
+ OPAL_PIN = 0x03,
+ /* locking tokens */
+ OPAL_RANGESTART = 0x03,
+ OPAL_RANGELENGTH = 0x04,
+ OPAL_READLOCKENABLED = 0x05,
+ OPAL_WRITELOCKENABLED = 0x06,
+ OPAL_READLOCKED = 0x07,
+ OPAL_WRITELOCKED = 0x08,
+ OPAL_ACTIVEKEY = 0x0A,
+ /* locking info table */
+ OPAL_MAXRANGES = 0x04,
+ /* mbr control */
+ OPAL_MBRENABLE = 0x01,
+ OPAL_MBRDONE = 0x02,
+ /* properties */
+ OPAL_HOSTPROPERTIES = 0x00,
+ /* atoms */
+ OPAL_STARTLIST = 0xf0,
+ OPAL_ENDLIST = 0xf1,
+ OPAL_STARTNAME = 0xf2,
+ OPAL_ENDNAME = 0xf3,
+ OPAL_CALL = 0xf8,
+ OPAL_ENDOFDATA = 0xf9,
+ OPAL_ENDOFSESSION = 0xfa,
+ OPAL_STARTTRANSACTON = 0xfb,
+ OPAL_ENDTRANSACTON = 0xfC,
+ OPAL_EMPTYATOM = 0xff,
+ OPAL_WHERE = 0x00,
+};
+
+/* Locking state for a locking range */
+enum opal_lockingstate {
+ OPAL_LOCKING_READWRITE = 0x01,
+ OPAL_LOCKING_READONLY = 0x02,
+ OPAL_LOCKING_LOCKED = 0x03,
+};
+
+/* Packets derived from:
+ * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Secion: 3.2.3 ComPackets, Packets & Subpackets
+ */
+
+/* Comm Packet (header) for transmissions. */
+struct opal_compacket {
+ __be32 reserved0;
+ u8 extendedComID[4];
+ __be32 outstandingData;
+ __be32 minTransfer;
+ __be32 length;
+};
+
+/* Packet structure. */
+struct opal_packet {
+ __be32 tsn;
+ __be32 hsn;
+ __be32 seq_number;
+ __be16 reserved0;
+ __be16 ack_type;
+ __be32 acknowledgment;
+ __be32 length;
+};
+
+/* Data sub packet header */
+struct opal_data_subpacket {
+ u8 reserved0[6];
+ __be16 kind;
+ __be32 length;
+};
+
+/* header of a response */
+struct opal_header {
+ struct opal_compacket cp;
+ struct opal_packet pkt;
+ struct opal_data_subpacket subpkt;
+};
+
+#define FC_TPER 0x0001
+#define FC_LOCKING 0x0002
+#define FC_GEOMETRY 0x0003
+#define FC_ENTERPRISE 0x0100
+#define FC_DATASTORE 0x0202
+#define FC_SINGLEUSER 0x0201
+#define FC_OPALV100 0x0200
+#define FC_OPALV200 0x0203
+
+/*
+ * The Discovery 0 Header. As defined in
+ * Opal SSC Documentation
+ * Section: 3.3.5 Capability Discovery
+ */
+struct d0_header {
+ __be32 length; /* the length of the header 48 in 2.00.100 */
+ __be32 revision; /**< revision of the header 1 in 2.00.100 */
+ __be32 reserved01;
+ __be32 reserved02;
+ /*
+ * the remainder of the structure is vendor specific and will not be
+ * addressed now
+ */
+ u8 ignored[32];
+};
+
+/*
+ * TPer Feature Descriptor. Contains flags indicating support for the
+ * TPer features described in the OPAL specification. The names match the
+ * OPAL terminology
+ *
+ * code == 0x001 in 2.00.100
+ */
+struct d0_tper_features {
+ /*
+ * supported_features bits:
+ * bit 7: reserved
+ * bit 6: com ID management
+ * bit 5: reserved
+ * bit 4: streaming support
+ * bit 3: buffer management
+ * bit 2: ACK/NACK
+ * bit 1: async
+ * bit 0: sync
+ */
+ u8 supported_features;
+ /*
+ * bytes 5 through 15 are reserved, but we represent the first 3 as
+ * u8 to keep the other two 32bits integers aligned.
+ */
+ u8 reserved01[3];
+ __be32 reserved02;
+ __be32 reserved03;
+};
+
+/*
+ * Locking Feature Descriptor. Contains flags indicating support for the
+ * locking features described in the OPAL specification. The names match the
+ * OPAL terminology
+ *
+ * code == 0x0002 in 2.00.100
+ */
+struct d0_locking_features {
+ /*
+ * supported_features bits:
+ * bits 6-7: reserved
+ * bit 5: MBR done
+ * bit 4: MBR enabled
+ * bit 3: media encryption
+ * bit 2: locked
+ * bit 1: locking enabled
+ * bit 0: locking supported
+ */
+ u8 supported_features;
+ /*
+ * bytes 5 through 15 are reserved, but we represent the first 3 as
+ * u8 to keep the other two 32bits integers aligned.
+ */
+ u8 reserved01[3];
+ __be32 reserved02;
+ __be32 reserved03;
+};
+
+/*
+ * Geometry Feature Descriptor. Contains flags indicating support for the
+ * geometry features described in the OPAL specification. The names match the
+ * OPAL terminology
+ *
+ * code == 0x0003 in 2.00.100
+ */
+struct d0_geometry_features {
+ /*
+ * skip 32 bits from header, needed to align the struct to 64 bits.
+ */
+ u8 header[4];
+ /*
+ * reserved01:
+ * bits 1-6: reserved
+ * bit 0: align
+ */
+ u8 reserved01;
+ u8 reserved02[7];
+ __be32 logical_block_size;
+ __be64 alignment_granularity;
+ __be64 lowest_aligned_lba;
+};
+
+/*
+ * Enterprise SSC Feature
+ *
+ * code == 0x0100
+ */
+struct d0_enterprise_ssc {
+ __be16 baseComID;
+ __be16 numComIDs;
+ /* range_crossing:
+ * bits 1-6: reserved
+ * bit 0: range crossing
+ */
+ u8 range_crossing;
+ u8 reserved01;
+ __be16 reserved02;
+ __be32 reserved03;
+ __be32 reserved04;
+};
+
+/*
+ * Opal V1 feature
+ *
+ * code == 0x0200
+ */
+struct d0_opal_v100 {
+ __be16 baseComID;
+ __be16 numComIDs;
+};
+
+/*
+ * Single User Mode feature
+ *
+ * code == 0x0201
+ */
+struct d0_single_user_mode {
+ __be32 num_locking_objects;
+ /* reserved01:
+ * bit 0: any
+ * bit 1: all
+ * bit 2: policy
+ * bits 3-7: reserved
+ */
+ u8 reserved01;
+ u8 reserved02;
+ __be16 reserved03;
+ __be32 reserved04;
+};
+
+/*
+ * Additonal Datastores feature
+ *
+ * code == 0x0202
+ */
+struct d0_datastore_table {
+ __be16 reserved01;
+ __be16 max_tables;
+ __be32 max_size_tables;
+ __be32 table_size_alignment;
+};
+
+/*
+ * OPAL 2.0 feature
+ *
+ * code == 0x0203
+ */
+struct d0_opal_v200 {
+ __be16 baseComID;
+ __be16 numComIDs;
+ /* range_crossing:
+ * bits 1-6: reserved
+ * bit 0: range crossing
+ */
+ u8 range_crossing;
+ /* num_locking_admin_auth:
+ * not aligned to 16 bits, so use two u8.
+ * stored in big endian:
+ * 0: MSB
+ * 1: LSB
+ */
+ u8 num_locking_admin_auth[2];
+ /* num_locking_user_auth:
+ * not aligned to 16 bits, so use two u8.
+ * stored in big endian:
+ * 0: MSB
+ * 1: LSB
+ */
+ u8 num_locking_user_auth[2];
+ u8 initialPIN;
+ u8 revertedPIN;
+ u8 reserved01;
+ __be32 reserved02;
+};
+
+/* Union of features used to parse the discovery 0 response */
+struct d0_features {
+ __be16 code;
+ /*
+ * r_version bits:
+ * bits 4-7: version
+ * bits 0-3: reserved
+ */
+ u8 r_version;
+ u8 length;
+ u8 features[];
+};
+
+#endif /* _OPAL_PROTO_H */
diff --git a/block/partitions/efi.c b/block/partitions/efi.c
index bcd86e5..39f70d9 100644
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -293,7 +293,7 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
if (!gpt)
return NULL;
- count = le32_to_cpu(gpt->num_partition_entries) *
+ count = (size_t)le32_to_cpu(gpt->num_partition_entries) *
le32_to_cpu(gpt->sizeof_partition_entry);
if (!count)
return NULL;
@@ -352,7 +352,7 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
gpt_header **gpt, gpt_entry **ptes)
{
u32 crc, origcrc;
- u64 lastlba;
+ u64 lastlba, pt_size;
if (!ptes)
return 0;
@@ -434,13 +434,20 @@ static int is_gpt_valid(struct parsed_partitions *state, u64 lba,
goto fail;
}
+ /* Sanity check partition table size */
+ pt_size = (u64)le32_to_cpu((*gpt)->num_partition_entries) *
+ le32_to_cpu((*gpt)->sizeof_partition_entry);
+ if (pt_size > KMALLOC_MAX_SIZE) {
+ pr_debug("GUID Partition Table is too large: %llu > %lu bytes\n",
+ (unsigned long long)pt_size, KMALLOC_MAX_SIZE);
+ goto fail;
+ }
+
if (!(*ptes = alloc_read_gpt_entries(state, *gpt)))
goto fail;
/* Check the GUID Partition Entry Array CRC */
- crc = efi_crc32((const unsigned char *) (*ptes),
- le32_to_cpu((*gpt)->num_partition_entries) *
- le32_to_cpu((*gpt)->sizeof_partition_entry));
+ crc = efi_crc32((const unsigned char *) (*ptes), pt_size);
if (crc != le32_to_cpu((*gpt)->partition_entry_array_crc32)) {
pr_debug("GUID Partition Entry Array CRC check failed.\n");
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index c2b6492..2a2fc76 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -230,15 +230,17 @@ EXPORT_SYMBOL(blk_verify_command);
static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
struct sg_io_hdr *hdr, fmode_t mode)
{
- if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
+ struct scsi_request *req = scsi_req(rq);
+
+ if (copy_from_user(req->cmd, hdr->cmdp, hdr->cmd_len))
return -EFAULT;
- if (blk_verify_command(rq->cmd, mode & FMODE_WRITE))
+ if (blk_verify_command(req->cmd, mode & FMODE_WRITE))
return -EPERM;
/*
* fill in request structure
*/
- rq->cmd_len = hdr->cmd_len;
+ req->cmd_len = hdr->cmd_len;
rq->timeout = msecs_to_jiffies(hdr->timeout);
if (!rq->timeout)
@@ -254,6 +256,7 @@ static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
struct bio *bio)
{
+ struct scsi_request *req = scsi_req(rq);
int r, ret = 0;
/*
@@ -267,13 +270,13 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
hdr->info = 0;
if (hdr->masked_status || hdr->host_status || hdr->driver_status)
hdr->info |= SG_INFO_CHECK;
- hdr->resid = rq->resid_len;
+ hdr->resid = req->resid_len;
hdr->sb_len_wr = 0;
- if (rq->sense_len && hdr->sbp) {
- int len = min((unsigned int) hdr->mx_sb_len, rq->sense_len);
+ if (req->sense_len && hdr->sbp) {
+ int len = min((unsigned int) hdr->mx_sb_len, req->sense_len);
- if (!copy_to_user(hdr->sbp, rq->sense, len))
+ if (!copy_to_user(hdr->sbp, req->sense, len))
hdr->sb_len_wr = len;
else
ret = -EFAULT;
@@ -294,7 +297,7 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
int writing = 0;
int at_head = 0;
struct request *rq;
- char sense[SCSI_SENSE_BUFFERSIZE];
+ struct scsi_request *req;
struct bio *bio;
if (hdr->interface_id != 'S')
@@ -318,14 +321,16 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
at_head = 1;
ret = -ENOMEM;
- rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL);
+ rq = blk_get_request(q, writing ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
+ GFP_KERNEL);
if (IS_ERR(rq))
return PTR_ERR(rq);
- blk_rq_set_block_pc(rq);
+ req = scsi_req(rq);
+ scsi_req_init(rq);
if (hdr->cmd_len > BLK_MAX_CDB) {
- rq->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL);
- if (!rq->cmd)
+ req->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL);
+ if (!req->cmd)
goto out_put_request;
}
@@ -357,9 +362,6 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
goto out_free_cdb;
bio = rq->bio;
- memset(sense, 0, sizeof(sense));
- rq->sense = sense;
- rq->sense_len = 0;
rq->retries = 0;
start_time = jiffies;
@@ -375,8 +377,7 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
ret = blk_complete_sghdr_rq(rq, hdr, bio);
out_free_cdb:
- if (rq->cmd != rq->__cmd)
- kfree(rq->cmd);
+ scsi_req_free_cmd(req);
out_put_request:
blk_put_request(rq);
return ret;
@@ -420,9 +421,10 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
struct scsi_ioctl_command __user *sic)
{
struct request *rq;
+ struct scsi_request *req;
int err;
unsigned int in_len, out_len, bytes, opcode, cmdlen;
- char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
+ char *buffer = NULL;
if (!sic)
return -EINVAL;
@@ -447,12 +449,14 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
}
- rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_RECLAIM);
+ rq = blk_get_request(q, in_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
+ __GFP_RECLAIM);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
goto error_free_buffer;
}
- blk_rq_set_block_pc(rq);
+ req = scsi_req(rq);
+ scsi_req_init(rq);
cmdlen = COMMAND_SIZE(opcode);
@@ -460,14 +464,14 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
* get command and data to send to device, if any
*/
err = -EFAULT;
- rq->cmd_len = cmdlen;
- if (copy_from_user(rq->cmd, sic->data, cmdlen))
+ req->cmd_len = cmdlen;
+ if (copy_from_user(req->cmd, sic->data, cmdlen))
goto error;
if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
goto error;
- err = blk_verify_command(rq->cmd, mode & FMODE_WRITE);
+ err = blk_verify_command(req->cmd, mode & FMODE_WRITE);
if (err)
goto error;
@@ -503,18 +507,14 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
goto error;
}
- memset(sense, 0, sizeof(sense));
- rq->sense = sense;
- rq->sense_len = 0;
-
blk_execute_rq(q, disk, rq, 0);
err = rq->errors & 0xff; /* only 8 bit SCSI status */
if (err) {
- if (rq->sense_len && rq->sense) {
- bytes = (OMAX_SB_LEN > rq->sense_len) ?
- rq->sense_len : OMAX_SB_LEN;
- if (copy_to_user(sic->data, rq->sense, bytes))
+ if (req->sense_len && req->sense) {
+ bytes = (OMAX_SB_LEN > req->sense_len) ?
+ req->sense_len : OMAX_SB_LEN;
+ if (copy_to_user(sic->data, req->sense, bytes))
err = -EFAULT;
}
} else {
@@ -539,14 +539,14 @@ static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
struct request *rq;
int err;
- rq = blk_get_request(q, WRITE, __GFP_RECLAIM);
+ rq = blk_get_request(q, REQ_OP_SCSI_OUT, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
- blk_rq_set_block_pc(rq);
+ scsi_req_init(rq);
rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
- rq->cmd[0] = cmd;
- rq->cmd[4] = data;
- rq->cmd_len = 6;
+ scsi_req(rq)->cmd[0] = cmd;
+ scsi_req(rq)->cmd[4] = data;
+ scsi_req(rq)->cmd_len = 6;
err = blk_execute_rq(q, bd_disk, rq, 0);
blk_put_request(rq);
@@ -743,6 +743,17 @@ int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode,
}
EXPORT_SYMBOL(scsi_cmd_blk_ioctl);
+void scsi_req_init(struct request *rq)
+{
+ struct scsi_request *req = scsi_req(rq);
+
+ memset(req->__cmd, 0, sizeof(req->__cmd));
+ req->cmd = req->__cmd;
+ req->cmd_len = BLK_MAX_CDB;
+ req->sense_len = 0;
+}
+EXPORT_SYMBOL(scsi_req_init);
+
static int __init blk_scsi_ioctl_init(void)
{
blk_set_cmd_filter_defaults(&blk_default_cmd_filter);
diff --git a/block/sed-opal.c b/block/sed-opal.c
new file mode 100644
index 0000000..d1c52ba
--- /dev/null
+++ b/block/sed-opal.c
@@ -0,0 +1,2488 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Authors:
+ * Scott Bauer <scott.bauer@intel.com>
+ * Rafael Antognolli <rafael.antognolli@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ":OPAL: " fmt
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/genhd.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <uapi/linux/sed-opal.h>
+#include <linux/sed-opal.h>
+#include <linux/string.h>
+#include <linux/kdev_t.h>
+
+#include "opal_proto.h"
+
+#define IO_BUFFER_LENGTH 2048
+#define MAX_TOKS 64
+
+typedef int (*opal_step)(struct opal_dev *dev);
+
+enum opal_atom_width {
+ OPAL_WIDTH_TINY,
+ OPAL_WIDTH_SHORT,
+ OPAL_WIDTH_MEDIUM,
+ OPAL_WIDTH_LONG,
+ OPAL_WIDTH_TOKEN
+};
+
+/*
+ * On the parsed response, we don't store again the toks that are already
+ * stored in the response buffer. Instead, for each token, we just store a
+ * pointer to the position in the buffer where the token starts, and the size
+ * of the token in bytes.
+ */
+struct opal_resp_tok {
+ const u8 *pos;
+ size_t len;
+ enum opal_response_token type;
+ enum opal_atom_width width;
+ union {
+ u64 u;
+ s64 s;
+ } stored;
+};
+
+/*
+ * From the response header it's not possible to know how many tokens there are
+ * on the payload. So we hardcode that the maximum will be MAX_TOKS, and later
+ * if we start dealing with messages that have more than that, we can increase
+ * this number. This is done to avoid having to make two passes through the
+ * response, the first one counting how many tokens we have and the second one
+ * actually storing the positions.
+ */
+struct parsed_resp {
+ int num;
+ struct opal_resp_tok toks[MAX_TOKS];
+};
+
+struct opal_dev {
+ bool supported;
+
+ void *data;
+ sec_send_recv *send_recv;
+
+ const opal_step *funcs;
+ void **func_data;
+ int state;
+ struct mutex dev_lock;
+ u16 comid;
+ u32 hsn;
+ u32 tsn;
+ u64 align;
+ u64 lowest_lba;
+
+ size_t pos;
+ u8 cmd[IO_BUFFER_LENGTH];
+ u8 resp[IO_BUFFER_LENGTH];
+
+ struct parsed_resp parsed;
+ size_t prev_d_len;
+ void *prev_data;
+
+ struct list_head unlk_lst;
+};
+
+
+static const u8 opaluid[][OPAL_UID_LENGTH] = {
+ /* users */
+ [OPAL_SMUID_UID] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff },
+ [OPAL_THISSP_UID] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_ADMINSP_UID] =
+ { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_LOCKINGSP_UID] =
+ { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02 },
+ [OPAL_ENTERPRISE_LOCKINGSP_UID] =
+ { 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x00, 0x01 },
+ [OPAL_ANYBODY_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_SID_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x06 },
+ [OPAL_ADMIN1_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01 },
+ [OPAL_USER1_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01 },
+ [OPAL_USER2_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x02 },
+ [OPAL_PSID_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0xff, 0x01 },
+ [OPAL_ENTERPRISE_BANDMASTER0_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x80, 0x01 },
+ [OPAL_ENTERPRISE_ERASEMASTER_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x84, 0x01 },
+
+ /* tables */
+
+ [OPAL_LOCKINGRANGE_GLOBAL] =
+ { 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_LOCKINGRANGE_ACE_RDLOCKED] =
+ { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 },
+ [OPAL_LOCKINGRANGE_ACE_WRLOCKED] =
+ { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 },
+ [OPAL_MBRCONTROL] =
+ { 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_MBR] =
+ { 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 },
+ [OPAL_AUTHORITY_TABLE] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00},
+ [OPAL_C_PIN_TABLE] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00},
+ [OPAL_LOCKING_INFO_TABLE] =
+ { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_ENTERPRISE_LOCKING_INFO_TABLE] =
+ { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 },
+
+ /* C_PIN_TABLE object ID's */
+
+ [OPAL_C_PIN_MSID] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x84, 0x02},
+ [OPAL_C_PIN_SID] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x01},
+ [OPAL_C_PIN_ADMIN1] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x01, 0x00, 0x01},
+
+ /* half UID's (only first 4 bytes used) */
+
+ [OPAL_HALF_UID_AUTHORITY_OBJ_REF] =
+ { 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff },
+ [OPAL_HALF_UID_BOOLEAN_ACE] =
+ { 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff },
+
+ /* special value for omitted optional parameter */
+ [OPAL_UID_HEXFF] =
+ { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+};
+
+/*
+ * TCG Storage SSC Methods.
+ * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Section: 6.3 Assigned UIDs
+ */
+static const u8 opalmethod[][OPAL_UID_LENGTH] = {
+ [OPAL_PROPERTIES] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 },
+ [OPAL_STARTSESSION] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 },
+ [OPAL_REVERT] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 },
+ [OPAL_ACTIVATE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 },
+ [OPAL_EGET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 },
+ [OPAL_ESET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 },
+ [OPAL_NEXT] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 },
+ [OPAL_EAUTHENTICATE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c },
+ [OPAL_GETACL] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d },
+ [OPAL_GENKEY] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 },
+ [OPAL_REVERTSP] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 },
+ [OPAL_GET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 },
+ [OPAL_SET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 },
+ [OPAL_AUTHENTICATE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c },
+ [OPAL_RANDOM] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 },
+ [OPAL_ERASE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 },
+};
+
+typedef int (cont_fn)(struct opal_dev *dev);
+
+static int end_opal_session_error(struct opal_dev *dev);
+
+struct opal_suspend_data {
+ struct opal_lock_unlock unlk;
+ u8 lr;
+ struct list_head node;
+};
+
+/*
+ * Derived from:
+ * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Section: 5.1.5 Method Status Codes
+ */
+static const char * const opal_errors[] = {
+ "Success",
+ "Not Authorized",
+ "Unknown Error",
+ "SP Busy",
+ "SP Failed",
+ "SP Disabled",
+ "SP Frozen",
+ "No Sessions Available",
+ "Uniqueness Conflict",
+ "Insufficient Space",
+ "Insufficient Rows",
+ "Invalid Function",
+ "Invalid Parameter",
+ "Invalid Reference",
+ "Unknown Error",
+ "TPER Malfunction",
+ "Transaction Failure",
+ "Response Overflow",
+ "Authority Locked Out",
+};
+
+static const char *opal_error_to_human(int error)
+{
+ if (error == 0x3f)
+ return "Failed";
+
+ if (error >= ARRAY_SIZE(opal_errors) || error < 0)
+ return "Unknown Error";
+
+ return opal_errors[error];
+}
+
+static void print_buffer(const u8 *ptr, u32 length)
+{
+#ifdef DEBUG
+ print_hex_dump_bytes("OPAL: ", DUMP_PREFIX_OFFSET, ptr, length);
+ pr_debug("\n");
+#endif
+}
+
+static bool check_tper(const void *data)
+{
+ const struct d0_tper_features *tper = data;
+ u8 flags = tper->supported_features;
+
+ if (!(flags & TPER_SYNC_SUPPORTED)) {
+ pr_err("TPer sync not supported. flags = %d\n",
+ tper->supported_features);
+ return false;
+ }
+
+ return true;
+}
+
+static bool check_sum(const void *data)
+{
+ const struct d0_single_user_mode *sum = data;
+ u32 nlo = be32_to_cpu(sum->num_locking_objects);
+
+ if (nlo == 0) {
+ pr_err("Need at least one locking object.\n");
+ return false;
+ }
+
+ pr_debug("Number of locking objects: %d\n", nlo);
+
+ return true;
+}
+
+static u16 get_comid_v100(const void *data)
+{
+ const struct d0_opal_v100 *v100 = data;
+
+ return be16_to_cpu(v100->baseComID);
+}
+
+static u16 get_comid_v200(const void *data)
+{
+ const struct d0_opal_v200 *v200 = data;
+
+ return be16_to_cpu(v200->baseComID);
+}
+
+static int opal_send_cmd(struct opal_dev *dev)
+{
+ return dev->send_recv(dev->data, dev->comid, TCG_SECP_01,
+ dev->cmd, IO_BUFFER_LENGTH,
+ true);
+}
+
+static int opal_recv_cmd(struct opal_dev *dev)
+{
+ return dev->send_recv(dev->data, dev->comid, TCG_SECP_01,
+ dev->resp, IO_BUFFER_LENGTH,
+ false);
+}
+
+static int opal_recv_check(struct opal_dev *dev)
+{
+ size_t buflen = IO_BUFFER_LENGTH;
+ void *buffer = dev->resp;
+ struct opal_header *hdr = buffer;
+ int ret;
+
+ do {
+ pr_debug("Sent OPAL command: outstanding=%d, minTransfer=%d\n",
+ hdr->cp.outstandingData,
+ hdr->cp.minTransfer);
+
+ if (hdr->cp.outstandingData == 0 ||
+ hdr->cp.minTransfer != 0)
+ return 0;
+
+ memset(buffer, 0, buflen);
+ ret = opal_recv_cmd(dev);
+ } while (!ret);
+
+ return ret;
+}
+
+static int opal_send_recv(struct opal_dev *dev, cont_fn *cont)
+{
+ int ret;
+
+ ret = opal_send_cmd(dev);
+ if (ret)
+ return ret;
+ ret = opal_recv_cmd(dev);
+ if (ret)
+ return ret;
+ ret = opal_recv_check(dev);
+ if (ret)
+ return ret;
+ return cont(dev);
+}
+
+static void check_geometry(struct opal_dev *dev, const void *data)
+{
+ const struct d0_geometry_features *geo = data;
+
+ dev->align = geo->alignment_granularity;
+ dev->lowest_lba = geo->lowest_aligned_lba;
+}
+
+static int next(struct opal_dev *dev)
+{
+ opal_step func;
+ int error = 0;
+
+ do {
+ func = dev->funcs[dev->state];
+ if (!func)
+ break;
+
+ error = func(dev);
+ if (error) {
+ pr_err("Error on step function: %d with error %d: %s\n",
+ dev->state, error,
+ opal_error_to_human(error));
+
+ /* For each OPAL command we do a discovery0 then we
+ * start some sort of session.
+ * If we haven't passed state 1 then there was an error
+ * on discovery0 or during the attempt to start a
+ * session. Therefore we shouldn't attempt to terminate
+ * a session, as one has not yet been created.
+ */
+ if (dev->state > 1)
+ return end_opal_session_error(dev);
+ }
+ dev->state++;
+ } while (!error);
+
+ return error;
+}
+
+static int opal_discovery0_end(struct opal_dev *dev)
+{
+ bool found_com_id = false, supported = true, single_user = false;
+ const struct d0_header *hdr = (struct d0_header *)dev->resp;
+ const u8 *epos = dev->resp, *cpos = dev->resp;
+ u16 comid = 0;
+
+ print_buffer(dev->resp, be32_to_cpu(hdr->length));
+
+ epos += be32_to_cpu(hdr->length); /* end of buffer */
+ cpos += sizeof(*hdr); /* current position on buffer */
+
+ while (cpos < epos && supported) {
+ const struct d0_features *body =
+ (const struct d0_features *)cpos;
+
+ switch (be16_to_cpu(body->code)) {
+ case FC_TPER:
+ supported = check_tper(body->features);
+ break;
+ case FC_SINGLEUSER:
+ single_user = check_sum(body->features);
+ break;
+ case FC_GEOMETRY:
+ check_geometry(dev, body);
+ break;
+ case FC_LOCKING:
+ case FC_ENTERPRISE:
+ case FC_DATASTORE:
+ /* some ignored properties */
+ pr_debug("Found OPAL feature description: %d\n",
+ be16_to_cpu(body->code));
+ break;
+ case FC_OPALV100:
+ comid = get_comid_v100(body->features);
+ found_com_id = true;
+ break;
+ case FC_OPALV200:
+ comid = get_comid_v200(body->features);
+ found_com_id = true;
+ break;
+ case 0xbfff ... 0xffff:
+ /* vendor specific, just ignore */
+ break;
+ default:
+ pr_debug("OPAL Unknown feature: %d\n",
+ be16_to_cpu(body->code));
+
+ }
+ cpos += body->length + 4;
+ }
+
+ if (!supported) {
+ pr_debug("This device is not Opal enabled. Not Supported!\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (!single_user)
+ pr_debug("Device doesn't support single user mode\n");
+
+
+ if (!found_com_id) {
+ pr_debug("Could not find OPAL comid for device. Returning early\n");
+ return -EOPNOTSUPP;;
+ }
+
+ dev->comid = comid;
+
+ return 0;
+}
+
+static int opal_discovery0(struct opal_dev *dev)
+{
+ int ret;
+
+ memset(dev->resp, 0, IO_BUFFER_LENGTH);
+ dev->comid = OPAL_DISCOVERY_COMID;
+ ret = opal_recv_cmd(dev);
+ if (ret)
+ return ret;
+ return opal_discovery0_end(dev);
+}
+
+static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok)
+{
+ if (*err)
+ return;
+ if (cmd->pos >= IO_BUFFER_LENGTH - 1) {
+ pr_err("Error adding u8: end of buffer.\n");
+ *err = -ERANGE;
+ return;
+ }
+ cmd->cmd[cmd->pos++] = tok;
+}
+
+static void add_short_atom_header(struct opal_dev *cmd, bool bytestring,
+ bool has_sign, int len)
+{
+ u8 atom;
+ int err = 0;
+
+ atom = SHORT_ATOM_ID;
+ atom |= bytestring ? SHORT_ATOM_BYTESTRING : 0;
+ atom |= has_sign ? SHORT_ATOM_SIGNED : 0;
+ atom |= len & SHORT_ATOM_LEN_MASK;
+
+ add_token_u8(&err, cmd, atom);
+}
+
+static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring,
+ bool has_sign, int len)
+{
+ u8 header0;
+
+ header0 = MEDIUM_ATOM_ID;
+ header0 |= bytestring ? MEDIUM_ATOM_BYTESTRING : 0;
+ header0 |= has_sign ? MEDIUM_ATOM_SIGNED : 0;
+ header0 |= (len >> 8) & MEDIUM_ATOM_LEN_MASK;
+ cmd->cmd[cmd->pos++] = header0;
+ cmd->cmd[cmd->pos++] = len;
+}
+
+static void add_token_u64(int *err, struct opal_dev *cmd, u64 number)
+{
+
+ size_t len;
+ int msb;
+ u8 n;
+
+ if (!(number & ~TINY_ATOM_DATA_MASK)) {
+ add_token_u8(err, cmd, number);
+ return;
+ }
+
+ msb = fls(number);
+ len = DIV_ROUND_UP(msb, 4);
+
+ if (cmd->pos >= IO_BUFFER_LENGTH - len - 1) {
+ pr_err("Error adding u64: end of buffer.\n");
+ *err = -ERANGE;
+ return;
+ }
+ add_short_atom_header(cmd, false, false, len);
+ while (len--) {
+ n = number >> (len * 8);
+ add_token_u8(err, cmd, n);
+ }
+}
+
+static void add_token_bytestring(int *err, struct opal_dev *cmd,
+ const u8 *bytestring, size_t len)
+{
+ size_t header_len = 1;
+ bool is_short_atom = true;
+
+ if (*err)
+ return;
+
+ if (len & ~SHORT_ATOM_LEN_MASK) {
+ header_len = 2;
+ is_short_atom = false;
+ }
+
+ if (len >= IO_BUFFER_LENGTH - cmd->pos - header_len) {
+ pr_err("Error adding bytestring: end of buffer.\n");
+ *err = -ERANGE;
+ return;
+ }
+
+ if (is_short_atom)
+ add_short_atom_header(cmd, true, false, len);
+ else
+ add_medium_atom_header(cmd, true, false, len);
+
+ memcpy(&cmd->cmd[cmd->pos], bytestring, len);
+ cmd->pos += len;
+
+}
+
+static int build_locking_range(u8 *buffer, size_t length, u8 lr)
+{
+ if (length > OPAL_UID_LENGTH) {
+ pr_err("Can't build locking range. Length OOB\n");
+ return -ERANGE;
+ }
+
+ memcpy(buffer, opaluid[OPAL_LOCKINGRANGE_GLOBAL], OPAL_UID_LENGTH);
+
+ if (lr == 0)
+ return 0;
+ buffer[5] = LOCKING_RANGE_NON_GLOBAL;
+ buffer[7] = lr;
+
+ return 0;
+}
+
+static int build_locking_user(u8 *buffer, size_t length, u8 lr)
+{
+ if (length > OPAL_UID_LENGTH) {
+ pr_err("Can't build locking range user, Length OOB\n");
+ return -ERANGE;
+ }
+
+ memcpy(buffer, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
+
+ buffer[7] = lr + 1;
+
+ return 0;
+}
+
+static void set_comid(struct opal_dev *cmd, u16 comid)
+{
+ struct opal_header *hdr = (struct opal_header *)cmd->cmd;
+
+ hdr->cp.extendedComID[0] = comid >> 8;
+ hdr->cp.extendedComID[1] = comid;
+ hdr->cp.extendedComID[2] = 0;
+ hdr->cp.extendedComID[3] = 0;
+}
+
+static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn)
+{
+ struct opal_header *hdr;
+ int err = 0;
+
+ add_token_u8(&err, cmd, OPAL_ENDOFDATA);
+ add_token_u8(&err, cmd, OPAL_STARTLIST);
+ add_token_u8(&err, cmd, 0);
+ add_token_u8(&err, cmd, 0);
+ add_token_u8(&err, cmd, 0);
+ add_token_u8(&err, cmd, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error finalizing command.\n");
+ return -EFAULT;
+ }
+
+ hdr = (struct opal_header *) cmd->cmd;
+
+ hdr->pkt.tsn = cpu_to_be32(tsn);
+ hdr->pkt.hsn = cpu_to_be32(hsn);
+
+ hdr->subpkt.length = cpu_to_be32(cmd->pos - sizeof(*hdr));
+ while (cmd->pos % 4) {
+ if (cmd->pos >= IO_BUFFER_LENGTH) {
+ pr_err("Error: Buffer overrun\n");
+ return -ERANGE;
+ }
+ cmd->cmd[cmd->pos++] = 0;
+ }
+ hdr->pkt.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp) -
+ sizeof(hdr->pkt));
+ hdr->cp.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp));
+
+ return 0;
+}
+
+static enum opal_response_token token_type(const struct parsed_resp *resp,
+ int n)
+{
+ const struct opal_resp_tok *tok;
+
+ if (n >= resp->num) {
+ pr_err("Token number doesn't exist: %d, resp: %d\n",
+ n, resp->num);
+ return OPAL_DTA_TOKENID_INVALID;
+ }
+
+ tok = &resp->toks[n];
+ if (tok->len == 0) {
+ pr_err("Token length must be non-zero\n");
+ return OPAL_DTA_TOKENID_INVALID;
+ }
+
+ return tok->type;
+}
+
+/*
+ * This function returns 0 in case of invalid token. One should call
+ * token_type() first to find out if the token is valid or not.
+ */
+static enum opal_token response_get_token(const struct parsed_resp *resp,
+ int n)
+{
+ const struct opal_resp_tok *tok;
+
+ if (n >= resp->num) {
+ pr_err("Token number doesn't exist: %d, resp: %d\n",
+ n, resp->num);
+ return 0;
+ }
+
+ tok = &resp->toks[n];
+ if (tok->len == 0) {
+ pr_err("Token length must be non-zero\n");
+ return 0;
+ }
+
+ return tok->pos[0];
+}
+
+static size_t response_parse_tiny(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = 1;
+ tok->width = OPAL_WIDTH_TINY;
+
+ if (pos[0] & TINY_ATOM_SIGNED) {
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ } else {
+ tok->type = OPAL_DTA_TOKENID_UINT;
+ tok->stored.u = pos[0] & 0x3f;
+ }
+
+ return tok->len;
+}
+
+static size_t response_parse_short(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = (pos[0] & SHORT_ATOM_LEN_MASK) + 1;
+ tok->width = OPAL_WIDTH_SHORT;
+
+ if (pos[0] & SHORT_ATOM_BYTESTRING) {
+ tok->type = OPAL_DTA_TOKENID_BYTESTRING;
+ } else if (pos[0] & SHORT_ATOM_SIGNED) {
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ } else {
+ u64 u_integer = 0;
+ int i, b = 0;
+
+ tok->type = OPAL_DTA_TOKENID_UINT;
+ if (tok->len > 9) {
+ pr_warn("uint64 with more than 8 bytes\n");
+ return -EINVAL;
+ }
+ for (i = tok->len - 1; i > 0; i--) {
+ u_integer |= ((u64)pos[i] << (8 * b));
+ b++;
+ }
+ tok->stored.u = u_integer;
+ }
+
+ return tok->len;
+}
+
+static size_t response_parse_medium(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = (((pos[0] & MEDIUM_ATOM_LEN_MASK) << 8) | pos[1]) + 2;
+ tok->width = OPAL_WIDTH_MEDIUM;
+
+ if (pos[0] & MEDIUM_ATOM_BYTESTRING)
+ tok->type = OPAL_DTA_TOKENID_BYTESTRING;
+ else if (pos[0] & MEDIUM_ATOM_SIGNED)
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ else
+ tok->type = OPAL_DTA_TOKENID_UINT;
+
+ return tok->len;
+}
+
+static size_t response_parse_long(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = ((pos[1] << 16) | (pos[2] << 8) | pos[3]) + 4;
+ tok->width = OPAL_WIDTH_LONG;
+
+ if (pos[0] & LONG_ATOM_BYTESTRING)
+ tok->type = OPAL_DTA_TOKENID_BYTESTRING;
+ else if (pos[0] & LONG_ATOM_SIGNED)
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ else
+ tok->type = OPAL_DTA_TOKENID_UINT;
+
+ return tok->len;
+}
+
+static size_t response_parse_token(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = 1;
+ tok->type = OPAL_DTA_TOKENID_TOKEN;
+ tok->width = OPAL_WIDTH_TOKEN;
+
+ return tok->len;
+}
+
+static int response_parse(const u8 *buf, size_t length,
+ struct parsed_resp *resp)
+{
+ const struct opal_header *hdr;
+ struct opal_resp_tok *iter;
+ int num_entries = 0;
+ int total;
+ size_t token_length;
+ const u8 *pos;
+
+ if (!buf)
+ return -EFAULT;
+
+ if (!resp)
+ return -EFAULT;
+
+ hdr = (struct opal_header *)buf;
+ pos = buf;
+ pos += sizeof(*hdr);
+
+ pr_debug("Response size: cp: %d, pkt: %d, subpkt: %d\n",
+ be32_to_cpu(hdr->cp.length),
+ be32_to_cpu(hdr->pkt.length),
+ be32_to_cpu(hdr->subpkt.length));
+
+ if (hdr->cp.length == 0 || hdr->pkt.length == 0 ||
+ hdr->subpkt.length == 0) {
+ pr_err("Bad header length. cp: %d, pkt: %d, subpkt: %d\n",
+ be32_to_cpu(hdr->cp.length),
+ be32_to_cpu(hdr->pkt.length),
+ be32_to_cpu(hdr->subpkt.length));
+ print_buffer(pos, sizeof(*hdr));
+ return -EINVAL;
+ }
+
+ if (pos > buf + length)
+ return -EFAULT;
+
+ iter = resp->toks;
+ total = be32_to_cpu(hdr->subpkt.length);
+ print_buffer(pos, total);
+ while (total > 0) {
+ if (pos[0] <= TINY_ATOM_BYTE) /* tiny atom */
+ token_length = response_parse_tiny(iter, pos);
+ else if (pos[0] <= SHORT_ATOM_BYTE) /* short atom */
+ token_length = response_parse_short(iter, pos);
+ else if (pos[0] <= MEDIUM_ATOM_BYTE) /* medium atom */
+ token_length = response_parse_medium(iter, pos);
+ else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */
+ token_length = response_parse_long(iter, pos);
+ else /* TOKEN */
+ token_length = response_parse_token(iter, pos);
+
+ if (token_length == -EINVAL)
+ return -EINVAL;
+
+ pos += token_length;
+ total -= token_length;
+ iter++;
+ num_entries++;
+ }
+
+ if (num_entries == 0) {
+ pr_err("Couldn't parse response.\n");
+ return -EINVAL;
+ }
+ resp->num = num_entries;
+
+ return 0;
+}
+
+static size_t response_get_string(const struct parsed_resp *resp, int n,
+ const char **store)
+{
+ *store = NULL;
+ if (!resp) {
+ pr_err("Response is NULL\n");
+ return 0;
+ }
+
+ if (n > resp->num) {
+ pr_err("Response has %d tokens. Can't access %d\n",
+ resp->num, n);
+ return 0;
+ }
+
+ if (resp->toks[n].type != OPAL_DTA_TOKENID_BYTESTRING) {
+ pr_err("Token is not a byte string!\n");
+ return 0;
+ }
+
+ *store = resp->toks[n].pos + 1;
+ return resp->toks[n].len - 1;
+}
+
+static u64 response_get_u64(const struct parsed_resp *resp, int n)
+{
+ if (!resp) {
+ pr_err("Response is NULL\n");
+ return 0;
+ }
+
+ if (n > resp->num) {
+ pr_err("Response has %d tokens. Can't access %d\n",
+ resp->num, n);
+ return 0;
+ }
+
+ if (resp->toks[n].type != OPAL_DTA_TOKENID_UINT) {
+ pr_err("Token is not unsigned it: %d\n",
+ resp->toks[n].type);
+ return 0;
+ }
+
+ if (!(resp->toks[n].width == OPAL_WIDTH_TINY ||
+ resp->toks[n].width == OPAL_WIDTH_SHORT)) {
+ pr_err("Atom is not short or tiny: %d\n",
+ resp->toks[n].width);
+ return 0;
+ }
+
+ return resp->toks[n].stored.u;
+}
+
+static u8 response_status(const struct parsed_resp *resp)
+{
+ if (token_type(resp, 0) == OPAL_DTA_TOKENID_TOKEN &&
+ response_get_token(resp, 0) == OPAL_ENDOFSESSION) {
+ return 0;
+ }
+
+ if (resp->num < 5)
+ return DTAERROR_NO_METHOD_STATUS;
+
+ if (token_type(resp, resp->num - 1) != OPAL_DTA_TOKENID_TOKEN ||
+ token_type(resp, resp->num - 5) != OPAL_DTA_TOKENID_TOKEN ||
+ response_get_token(resp, resp->num - 1) != OPAL_ENDLIST ||
+ response_get_token(resp, resp->num - 5) != OPAL_STARTLIST)
+ return DTAERROR_NO_METHOD_STATUS;
+
+ return response_get_u64(resp, resp->num - 4);
+}
+
+/* Parses and checks for errors */
+static int parse_and_check_status(struct opal_dev *dev)
+{
+ int error;
+
+ print_buffer(dev->cmd, dev->pos);
+
+ error = response_parse(dev->resp, IO_BUFFER_LENGTH, &dev->parsed);
+ if (error) {
+ pr_err("Couldn't parse response.\n");
+ return error;
+ }
+
+ return response_status(&dev->parsed);
+}
+
+static void clear_opal_cmd(struct opal_dev *dev)
+{
+ dev->pos = sizeof(struct opal_header);
+ memset(dev->cmd, 0, IO_BUFFER_LENGTH);
+}
+
+static int start_opal_session_cont(struct opal_dev *dev)
+{
+ u32 hsn, tsn;
+ int error = 0;
+
+ error = parse_and_check_status(dev);
+ if (error)
+ return error;
+
+ hsn = response_get_u64(&dev->parsed, 4);
+ tsn = response_get_u64(&dev->parsed, 5);
+
+ if (hsn == 0 && tsn == 0) {
+ pr_err("Couldn't authenticate session\n");
+ return -EPERM;
+ }
+
+ dev->hsn = hsn;
+ dev->tsn = tsn;
+ return 0;
+}
+
+static void add_suspend_info(struct opal_dev *dev,
+ struct opal_suspend_data *sus)
+{
+ struct opal_suspend_data *iter;
+
+ list_for_each_entry(iter, &dev->unlk_lst, node) {
+ if (iter->lr == sus->lr) {
+ list_del(&iter->node);
+ kfree(iter);
+ break;
+ }
+ }
+ list_add_tail(&sus->node, &dev->unlk_lst);
+}
+
+static int end_session_cont(struct opal_dev *dev)
+{
+ dev->hsn = 0;
+ dev->tsn = 0;
+ return parse_and_check_status(dev);
+}
+
+static int finalize_and_send(struct opal_dev *dev, cont_fn cont)
+{
+ int ret;
+
+ ret = cmd_finalize(dev, dev->hsn, dev->tsn);
+ if (ret) {
+ pr_err("Error finalizing command buffer: %d\n", ret);
+ return ret;
+ }
+
+ print_buffer(dev->cmd, dev->pos);
+
+ return opal_send_recv(dev, cont);
+}
+
+static int gen_key(struct opal_dev *dev)
+{
+ const u8 *method;
+ u8 uid[OPAL_UID_LENGTH];
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ memcpy(uid, dev->prev_data, min(sizeof(uid), dev->prev_d_len));
+ method = opalmethod[OPAL_GENKEY];
+ kfree(dev->prev_data);
+ dev->prev_data = NULL;
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_GENKEY],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error building gen key command\n");
+ return err;
+
+ }
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int get_active_key_cont(struct opal_dev *dev)
+{
+ const char *activekey;
+ size_t keylen;
+ int error = 0;
+
+ error = parse_and_check_status(dev);
+ if (error)
+ return error;
+ keylen = response_get_string(&dev->parsed, 4, &activekey);
+ if (!activekey) {
+ pr_err("%s: Couldn't extract the Activekey from the response\n",
+ __func__);
+ return OPAL_INVAL_PARAM;
+ }
+ dev->prev_data = kmemdup(activekey, keylen, GFP_KERNEL);
+
+ if (!dev->prev_data)
+ return -ENOMEM;
+
+ dev->prev_d_len = keylen;
+
+ return 0;
+}
+
+static int get_active_key(struct opal_dev *dev)
+{
+ u8 uid[OPAL_UID_LENGTH];
+ int err = 0;
+ u8 *lr;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+ lr = dev->func_data[dev->state];
+
+ err = build_locking_range(uid, sizeof(uid), *lr);
+ if (err)
+ return err;
+
+ err = 0;
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_GET], OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3); /* startCloumn */
+ add_token_u8(&err, dev, 10); /* ActiveKey */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 4); /* endColumn */
+ add_token_u8(&err, dev, 10); /* ActiveKey */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ if (err) {
+ pr_err("Error building get active key command\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, get_active_key_cont);
+}
+
+static int generic_lr_enable_disable(struct opal_dev *dev,
+ u8 *uid, bool rle, bool wle,
+ bool rl, bool wl)
+{
+ int err = 0;
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 5); /* ReadLockEnabled */
+ add_token_u8(&err, dev, rle);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 6); /* WriteLockEnabled */
+ add_token_u8(&err, dev, wle);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_READLOCKED);
+ add_token_u8(&err, dev, rl);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_WRITELOCKED);
+ add_token_u8(&err, dev, wl);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ return err;
+}
+
+static inline int enable_global_lr(struct opal_dev *dev, u8 *uid,
+ struct opal_user_lr_setup *setup)
+{
+ int err;
+
+ err = generic_lr_enable_disable(dev, uid, !!setup->RLE, !!setup->WLE,
+ 0, 0);
+ if (err)
+ pr_err("Failed to create enable global lr command\n");
+ return err;
+}
+
+static int setup_locking_range(struct opal_dev *dev)
+{
+ u8 uid[OPAL_UID_LENGTH];
+ struct opal_user_lr_setup *setup;
+ u8 lr;
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ setup = dev->func_data[dev->state];
+ lr = setup->session.opal_key.lr;
+ err = build_locking_range(uid, sizeof(uid), lr);
+ if (err)
+ return err;
+
+ if (lr == 0)
+ err = enable_global_lr(dev, uid, setup);
+ else {
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET],
+ OPAL_UID_LENGTH);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3); /* Ranges Start */
+ add_token_u64(&err, dev, setup->range_start);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 4); /* Ranges length */
+ add_token_u64(&err, dev, setup->range_length);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 5); /*ReadLockEnabled */
+ add_token_u64(&err, dev, !!setup->RLE);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 6); /*WriteLockEnabled*/
+ add_token_u64(&err, dev, !!setup->WLE);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ }
+ if (err) {
+ pr_err("Error building Setup Locking range command.\n");
+ return err;
+
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int start_generic_opal_session(struct opal_dev *dev,
+ enum opal_uid auth,
+ enum opal_uid sp_type,
+ const char *key,
+ u8 key_len)
+{
+ u32 hsn;
+ int err = 0;
+
+ if (key == NULL && auth != OPAL_ANYBODY_UID) {
+ pr_err("%s: Attempted to open ADMIN_SP Session without a Host" \
+ "Challenge, and not as the Anybody UID\n", __func__);
+ return OPAL_INVAL_PARAM;
+ }
+
+ clear_opal_cmd(dev);
+
+ set_comid(dev, dev->comid);
+ hsn = GENERIC_HOST_SESSION_NUM;
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_SMUID_UID],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_STARTSESSION],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u64(&err, dev, hsn);
+ add_token_bytestring(&err, dev, opaluid[sp_type], OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, 1);
+
+ switch (auth) {
+ case OPAL_ANYBODY_UID:
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ break;
+ case OPAL_ADMIN1_UID:
+ case OPAL_SID_UID:
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 0); /* HostChallenge */
+ add_token_bytestring(&err, dev, key, key_len);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3); /* HostSignAuth */
+ add_token_bytestring(&err, dev, opaluid[auth],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ break;
+ default:
+ pr_err("Cannot start Admin SP session with auth %d\n", auth);
+ return OPAL_INVAL_PARAM;
+ }
+
+ if (err) {
+ pr_err("Error building start adminsp session command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, start_opal_session_cont);
+}
+
+static int start_anybodyASP_opal_session(struct opal_dev *dev)
+{
+ return start_generic_opal_session(dev, OPAL_ANYBODY_UID,
+ OPAL_ADMINSP_UID, NULL, 0);
+}
+
+static int start_SIDASP_opal_session(struct opal_dev *dev)
+{
+ int ret;
+ const u8 *key = dev->prev_data;
+ struct opal_key *okey;
+
+ if (!key) {
+ okey = dev->func_data[dev->state];
+ ret = start_generic_opal_session(dev, OPAL_SID_UID,
+ OPAL_ADMINSP_UID,
+ okey->key,
+ okey->key_len);
+ } else {
+ ret = start_generic_opal_session(dev, OPAL_SID_UID,
+ OPAL_ADMINSP_UID,
+ key, dev->prev_d_len);
+ kfree(key);
+ dev->prev_data = NULL;
+ }
+ return ret;
+}
+
+static inline int start_admin1LSP_opal_session(struct opal_dev *dev)
+{
+ struct opal_key *key = dev->func_data[dev->state];
+
+ return start_generic_opal_session(dev, OPAL_ADMIN1_UID,
+ OPAL_LOCKINGSP_UID,
+ key->key, key->key_len);
+}
+
+static int start_auth_opal_session(struct opal_dev *dev)
+{
+ u8 lk_ul_user[OPAL_UID_LENGTH];
+ int err = 0;
+
+ struct opal_session_info *session = dev->func_data[dev->state];
+ size_t keylen = session->opal_key.key_len;
+ u8 *key = session->opal_key.key;
+ u32 hsn = GENERIC_HOST_SESSION_NUM;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ if (session->sum) {
+ err = build_locking_user(lk_ul_user, sizeof(lk_ul_user),
+ session->opal_key.lr);
+ if (err)
+ return err;
+
+ } else if (session->who != OPAL_ADMIN1 && !session->sum) {
+ err = build_locking_user(lk_ul_user, sizeof(lk_ul_user),
+ session->who - 1);
+ if (err)
+ return err;
+ } else
+ memcpy(lk_ul_user, opaluid[OPAL_ADMIN1_UID], OPAL_UID_LENGTH);
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_SMUID_UID],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_STARTSESSION],
+ OPAL_UID_LENGTH);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u64(&err, dev, hsn);
+ add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, 1);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 0);
+ add_token_bytestring(&err, dev, key, keylen);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3);
+ add_token_bytestring(&err, dev, lk_ul_user, OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error building STARTSESSION command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, start_opal_session_cont);
+}
+
+static int revert_tper(struct opal_dev *dev)
+{
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_ADMINSP_UID],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_REVERT],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ if (err) {
+ pr_err("Error building REVERT TPER command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int internal_activate_user(struct opal_dev *dev)
+{
+ struct opal_session_info *session = dev->func_data[dev->state];
+ u8 uid[OPAL_UID_LENGTH];
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ memcpy(uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
+ uid[7] = session->who;
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 5); /* Enabled */
+ add_token_u8(&err, dev, OPAL_TRUE);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error building Activate UserN command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int erase_locking_range(struct opal_dev *dev)
+{
+ struct opal_session_info *session;
+ u8 uid[OPAL_UID_LENGTH];
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+ session = dev->func_data[dev->state];
+
+ if (build_locking_range(uid, sizeof(uid), session->opal_key.lr) < 0)
+ return -ERANGE;
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_ERASE],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error building Erase Locking Range Command.\n");
+ return err;
+ }
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int set_mbr_done(struct opal_dev *dev)
+{
+ u8 mbr_done_tf = *(u8 *)dev->func_data[dev->state];
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_MBRCONTROL],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 2); /* Done */
+ add_token_u8(&err, dev, mbr_done_tf); /* Done T or F */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error Building set MBR Done command\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int set_mbr_enable_disable(struct opal_dev *dev)
+{
+ u8 mbr_en_dis = *(u8 *)dev->func_data[dev->state];
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_MBRCONTROL],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 1);
+ add_token_u8(&err, dev, mbr_en_dis);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error Building set MBR done command\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid,
+ struct opal_dev *dev)
+{
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, cpin_uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3); /* PIN */
+ add_token_bytestring(&err, dev, key, key_len);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ return err;
+}
+
+static int set_new_pw(struct opal_dev *dev)
+{
+ u8 cpin_uid[OPAL_UID_LENGTH];
+ struct opal_session_info *usr = dev->func_data[dev->state];
+
+
+ memcpy(cpin_uid, opaluid[OPAL_C_PIN_ADMIN1], OPAL_UID_LENGTH);
+
+ if (usr->who != OPAL_ADMIN1) {
+ cpin_uid[5] = 0x03;
+ if (usr->sum)
+ cpin_uid[7] = usr->opal_key.lr + 1;
+ else
+ cpin_uid[7] = usr->who;
+ }
+
+ if (generic_pw_cmd(usr->opal_key.key, usr->opal_key.key_len,
+ cpin_uid, dev)) {
+ pr_err("Error building set password command.\n");
+ return -ERANGE;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int set_sid_cpin_pin(struct opal_dev *dev)
+{
+ u8 cpin_uid[OPAL_UID_LENGTH];
+ struct opal_key *key = dev->func_data[dev->state];
+
+ memcpy(cpin_uid, opaluid[OPAL_C_PIN_SID], OPAL_UID_LENGTH);
+
+ if (generic_pw_cmd(key->key, key->key_len, cpin_uid, dev)) {
+ pr_err("Error building Set SID cpin\n");
+ return -ERANGE;
+ }
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int add_user_to_lr(struct opal_dev *dev)
+{
+ u8 lr_buffer[OPAL_UID_LENGTH];
+ u8 user_uid[OPAL_UID_LENGTH];
+ struct opal_lock_unlock *lkul;
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ lkul = dev->func_data[dev->state];
+
+ memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_RDLOCKED],
+ OPAL_UID_LENGTH);
+
+ if (lkul->l_state == OPAL_RW)
+ memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_WRLOCKED],
+ OPAL_UID_LENGTH);
+
+ lr_buffer[7] = lkul->session.opal_key.lr;
+
+ memcpy(user_uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
+
+ user_uid[7] = lkul->session.who;
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, lr_buffer, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET],
+ OPAL_UID_LENGTH);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_bytestring(&err, dev,
+ opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
+ OPAL_UID_LENGTH/2);
+ add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_bytestring(&err, dev,
+ opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
+ OPAL_UID_LENGTH/2);
+ add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_bytestring(&err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE],
+ OPAL_UID_LENGTH/2);
+ add_token_u8(&err, dev, 1);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error building add user to locking range command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int lock_unlock_locking_range(struct opal_dev *dev)
+{
+ u8 lr_buffer[OPAL_UID_LENGTH];
+ const u8 *method;
+ struct opal_lock_unlock *lkul;
+ u8 read_locked = 1, write_locked = 1;
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ method = opalmethod[OPAL_SET];
+ lkul = dev->func_data[dev->state];
+ if (build_locking_range(lr_buffer, sizeof(lr_buffer),
+ lkul->session.opal_key.lr) < 0)
+ return -ERANGE;
+
+ switch (lkul->l_state) {
+ case OPAL_RO:
+ read_locked = 0;
+ write_locked = 1;
+ break;
+ case OPAL_RW:
+ read_locked = 0;
+ write_locked = 0;
+ break;
+ case OPAL_LK:
+ /* vars are initalized to locked */
+ break;
+ default:
+ pr_err("Tried to set an invalid locking state... returning to uland\n");
+ return OPAL_INVAL_PARAM;
+ }
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, lr_buffer, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_READLOCKED);
+ add_token_u8(&err, dev, read_locked);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_WRITELOCKED);
+ add_token_u8(&err, dev, write_locked);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error building SET command.\n");
+ return err;
+ }
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+
+static int lock_unlock_locking_range_sum(struct opal_dev *dev)
+{
+ u8 lr_buffer[OPAL_UID_LENGTH];
+ u8 read_locked = 1, write_locked = 1;
+ const u8 *method;
+ struct opal_lock_unlock *lkul;
+ int ret;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ method = opalmethod[OPAL_SET];
+ lkul = dev->func_data[dev->state];
+ if (build_locking_range(lr_buffer, sizeof(lr_buffer),
+ lkul->session.opal_key.lr) < 0)
+ return -ERANGE;
+
+ switch (lkul->l_state) {
+ case OPAL_RO:
+ read_locked = 0;
+ write_locked = 1;
+ break;
+ case OPAL_RW:
+ read_locked = 0;
+ write_locked = 0;
+ break;
+ case OPAL_LK:
+ /* vars are initalized to locked */
+ break;
+ default:
+ pr_err("Tried to set an invalid locking state.\n");
+ return OPAL_INVAL_PARAM;
+ }
+ ret = generic_lr_enable_disable(dev, lr_buffer, 1, 1,
+ read_locked, write_locked);
+
+ if (ret < 0) {
+ pr_err("Error building SET command.\n");
+ return ret;
+ }
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int activate_lsp(struct opal_dev *dev)
+{
+ struct opal_lr_act *opal_act;
+ u8 user_lr[OPAL_UID_LENGTH];
+ u8 uint_3 = 0x83;
+ int err = 0, i;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ opal_act = dev->func_data[dev->state];
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_ACTIVATE],
+ OPAL_UID_LENGTH);
+
+
+ if (opal_act->sum) {
+ err = build_locking_range(user_lr, sizeof(user_lr),
+ opal_act->lr[0]);
+ if (err)
+ return err;
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, uint_3);
+ add_token_u8(&err, dev, 6);
+ add_token_u8(&err, dev, 0);
+ add_token_u8(&err, dev, 0);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH);
+ for (i = 1; i < opal_act->num_lrs; i++) {
+ user_lr[7] = opal_act->lr[i];
+ add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH);
+ }
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ } else {
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ }
+
+ if (err) {
+ pr_err("Error building Activate LockingSP command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int get_lsp_lifecycle_cont(struct opal_dev *dev)
+{
+ u8 lc_status;
+ int error = 0;
+
+ error = parse_and_check_status(dev);
+ if (error)
+ return error;
+
+ lc_status = response_get_u64(&dev->parsed, 4);
+ /* 0x08 is Manufacured Inactive */
+ /* 0x09 is Manufactured */
+ if (lc_status != OPAL_MANUFACTURED_INACTIVE) {
+ pr_err("Couldn't determine the status of the Lifcycle state\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/* Determine if we're in the Manufactured Inactive or Active state */
+static int get_lsp_lifecycle(struct opal_dev *dev)
+{
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_GET], OPAL_UID_LENGTH);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3); /* Start Column */
+ add_token_u8(&err, dev, 6); /* Lifecycle Column */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 4); /* End Column */
+ add_token_u8(&err, dev, 6); /* Lifecycle Column */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error Building GET Lifecycle Status command\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, get_lsp_lifecycle_cont);
+}
+
+static int get_msid_cpin_pin_cont(struct opal_dev *dev)
+{
+ const char *msid_pin;
+ size_t strlen;
+ int error = 0;
+
+ error = parse_and_check_status(dev);
+ if (error)
+ return error;
+
+ strlen = response_get_string(&dev->parsed, 4, &msid_pin);
+ if (!msid_pin) {
+ pr_err("%s: Couldn't extract PIN from response\n", __func__);
+ return OPAL_INVAL_PARAM;
+ }
+
+ dev->prev_data = kmemdup(msid_pin, strlen, GFP_KERNEL);
+ if (!dev->prev_data)
+ return -ENOMEM;
+
+ dev->prev_d_len = strlen;
+
+ return 0;
+}
+
+static int get_msid_cpin_pin(struct opal_dev *dev)
+{
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, opaluid[OPAL_C_PIN_MSID],
+ OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, opalmethod[OPAL_GET], OPAL_UID_LENGTH);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3); /* Start Column */
+ add_token_u8(&err, dev, 3); /* PIN */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 4); /* End Column */
+ add_token_u8(&err, dev, 3); /* Lifecycle Column */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_err("Error building Get MSID CPIN PIN command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, get_msid_cpin_pin_cont);
+}
+
+static int build_end_opal_session(struct opal_dev *dev)
+{
+ int err = 0;
+
+ clear_opal_cmd(dev);
+
+ set_comid(dev, dev->comid);
+ add_token_u8(&err, dev, OPAL_ENDOFSESSION);
+ return err;
+}
+
+static int end_opal_session(struct opal_dev *dev)
+{
+ int ret = build_end_opal_session(dev);
+
+ if (ret < 0)
+ return ret;
+ return finalize_and_send(dev, end_session_cont);
+}
+
+static int end_opal_session_error(struct opal_dev *dev)
+{
+ const opal_step error_end_session[] = {
+ end_opal_session,
+ NULL,
+ };
+ dev->funcs = error_end_session;
+ dev->state = 0;
+ return next(dev);
+}
+
+static inline void setup_opal_dev(struct opal_dev *dev,
+ const opal_step *funcs)
+{
+ dev->state = 0;
+ dev->funcs = funcs;
+ dev->tsn = 0;
+ dev->hsn = 0;
+ dev->func_data = NULL;
+ dev->prev_data = NULL;
+}
+
+static int check_opal_support(struct opal_dev *dev)
+{
+ static const opal_step funcs[] = {
+ opal_discovery0,
+ NULL
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, funcs);
+ ret = next(dev);
+ dev->supported = !ret;
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv)
+{
+ struct opal_dev *dev;
+
+ dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ INIT_LIST_HEAD(&dev->unlk_lst);
+ mutex_init(&dev->dev_lock);
+ dev->data = data;
+ dev->send_recv = send_recv;
+ if (check_opal_support(dev) != 0) {
+ pr_debug("Opal is not supported on this device\n");
+ kfree(dev);
+ return NULL;
+ }
+ return dev;
+}
+EXPORT_SYMBOL(init_opal_dev);
+
+static int opal_secure_erase_locking_range(struct opal_dev *dev,
+ struct opal_session_info *opal_session)
+{
+ void *data[3] = { NULL };
+ static const opal_step erase_funcs[] = {
+ opal_discovery0,
+ start_auth_opal_session,
+ get_active_key,
+ gen_key,
+ end_opal_session,
+ NULL,
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, erase_funcs);
+
+ dev->func_data = data;
+ dev->func_data[1] = opal_session;
+ dev->func_data[2] = &opal_session->opal_key.lr;
+
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_erase_locking_range(struct opal_dev *dev,
+ struct opal_session_info *opal_session)
+{
+ void *data[3] = { NULL };
+ static const opal_step erase_funcs[] = {
+ opal_discovery0,
+ start_auth_opal_session,
+ erase_locking_range,
+ end_opal_session,
+ NULL,
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, erase_funcs);
+
+ dev->func_data = data;
+ dev->func_data[1] = opal_session;
+ dev->func_data[2] = opal_session;
+
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_enable_disable_shadow_mbr(struct opal_dev *dev,
+ struct opal_mbr_data *opal_mbr)
+{
+ void *func_data[6] = { NULL };
+ static const opal_step mbr_funcs[] = {
+ opal_discovery0,
+ start_admin1LSP_opal_session,
+ set_mbr_done,
+ end_opal_session,
+ start_admin1LSP_opal_session,
+ set_mbr_enable_disable,
+ end_opal_session,
+ NULL,
+ };
+ int ret;
+
+ if (opal_mbr->enable_disable != OPAL_MBR_ENABLE &&
+ opal_mbr->enable_disable != OPAL_MBR_DISABLE)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, mbr_funcs);
+ dev->func_data = func_data;
+ dev->func_data[1] = &opal_mbr->key;
+ dev->func_data[2] = &opal_mbr->enable_disable;
+ dev->func_data[4] = &opal_mbr->key;
+ dev->func_data[5] = &opal_mbr->enable_disable;
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk)
+{
+ struct opal_suspend_data *suspend;
+
+ suspend = kzalloc(sizeof(*suspend), GFP_KERNEL);
+ if (!suspend)
+ return -ENOMEM;
+
+ suspend->unlk = *lk_unlk;
+ suspend->lr = lk_unlk->session.opal_key.lr;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, NULL);
+ add_suspend_info(dev, suspend);
+ mutex_unlock(&dev->dev_lock);
+ return 0;
+}
+
+static int opal_add_user_to_lr(struct opal_dev *dev,
+ struct opal_lock_unlock *lk_unlk)
+{
+ void *func_data[3] = { NULL };
+ static const opal_step funcs[] = {
+ opal_discovery0,
+ start_admin1LSP_opal_session,
+ add_user_to_lr,
+ end_opal_session,
+ NULL
+ };
+ int ret;
+
+ if (lk_unlk->l_state != OPAL_RO &&
+ lk_unlk->l_state != OPAL_RW) {
+ pr_err("Locking state was not RO or RW\n");
+ return -EINVAL;
+ }
+ if (lk_unlk->session.who < OPAL_USER1 &&
+ lk_unlk->session.who > OPAL_USER9) {
+ pr_err("Authority was not within the range of users: %d\n",
+ lk_unlk->session.who);
+ return -EINVAL;
+ }
+ if (lk_unlk->session.sum) {
+ pr_err("%s not supported in sum. Use setup locking range\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, funcs);
+ dev->func_data = func_data;
+ dev->func_data[1] = &lk_unlk->session.opal_key;
+ dev->func_data[2] = lk_unlk;
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal)
+{
+ void *data[2] = { NULL };
+ static const opal_step revert_funcs[] = {
+ opal_discovery0,
+ start_SIDASP_opal_session,
+ revert_tper, /* controller will terminate session */
+ NULL,
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, revert_funcs);
+ dev->func_data = data;
+ dev->func_data[1] = opal;
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int __opal_lock_unlock_sum(struct opal_dev *dev)
+{
+ static const opal_step ulk_funcs_sum[] = {
+ opal_discovery0,
+ start_auth_opal_session,
+ lock_unlock_locking_range_sum,
+ end_opal_session,
+ NULL
+ };
+
+ dev->funcs = ulk_funcs_sum;
+ return next(dev);
+}
+
+static int __opal_lock_unlock(struct opal_dev *dev)
+{
+ static const opal_step _unlock_funcs[] = {
+ opal_discovery0,
+ start_auth_opal_session,
+ lock_unlock_locking_range,
+ end_opal_session,
+ NULL
+ };
+
+ dev->funcs = _unlock_funcs;
+ return next(dev);
+}
+
+static int opal_lock_unlock(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk)
+{
+ void *func_data[3] = { NULL };
+ int ret;
+
+ if (lk_unlk->session.who < OPAL_ADMIN1 ||
+ lk_unlk->session.who > OPAL_USER9)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, NULL);
+ dev->func_data = func_data;
+ dev->func_data[1] = &lk_unlk->session;
+ dev->func_data[2] = lk_unlk;
+
+ if (lk_unlk->session.sum)
+ ret = __opal_lock_unlock_sum(dev);
+ else
+ ret = __opal_lock_unlock(dev);
+
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal)
+{
+ static const opal_step owner_funcs[] = {
+ opal_discovery0,
+ start_anybodyASP_opal_session,
+ get_msid_cpin_pin,
+ end_opal_session,
+ start_SIDASP_opal_session,
+ set_sid_cpin_pin,
+ end_opal_session,
+ NULL
+ };
+ void *data[6] = { NULL };
+ int ret;
+
+ if (!dev)
+ return -ENODEV;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, owner_funcs);
+ dev->func_data = data;
+ dev->func_data[4] = opal;
+ dev->func_data[5] = opal;
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_activate_lsp(struct opal_dev *dev, struct opal_lr_act *opal_lr_act)
+{
+ void *data[4] = { NULL };
+ static const opal_step active_funcs[] = {
+ opal_discovery0,
+ start_SIDASP_opal_session, /* Open session as SID auth */
+ get_lsp_lifecycle,
+ activate_lsp,
+ end_opal_session,
+ NULL
+ };
+ int ret;
+
+ if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, active_funcs);
+ dev->func_data = data;
+ dev->func_data[1] = &opal_lr_act->key;
+ dev->func_data[3] = opal_lr_act;
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_setup_locking_range(struct opal_dev *dev,
+ struct opal_user_lr_setup *opal_lrs)
+{
+ void *data[3] = { NULL };
+ static const opal_step lr_funcs[] = {
+ opal_discovery0,
+ start_auth_opal_session,
+ setup_locking_range,
+ end_opal_session,
+ NULL,
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, lr_funcs);
+ dev->func_data = data;
+ dev->func_data[1] = &opal_lrs->session;
+ dev->func_data[2] = opal_lrs;
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw)
+{
+ static const opal_step pw_funcs[] = {
+ opal_discovery0,
+ start_auth_opal_session,
+ set_new_pw,
+ end_opal_session,
+ NULL
+ };
+ void *data[3] = { NULL };
+ int ret;
+
+ if (opal_pw->session.who < OPAL_ADMIN1 ||
+ opal_pw->session.who > OPAL_USER9 ||
+ opal_pw->new_user_pw.who < OPAL_ADMIN1 ||
+ opal_pw->new_user_pw.who > OPAL_USER9)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, pw_funcs);
+ dev->func_data = data;
+ dev->func_data[1] = (void *) &opal_pw->session;
+ dev->func_data[2] = (void *) &opal_pw->new_user_pw;
+
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+static int opal_activate_user(struct opal_dev *dev,
+ struct opal_session_info *opal_session)
+{
+ static const opal_step act_funcs[] = {
+ opal_discovery0,
+ start_admin1LSP_opal_session,
+ internal_activate_user,
+ end_opal_session,
+ NULL
+ };
+ void *data[3] = { NULL };
+ int ret;
+
+ /* We can't activate Admin1 it's active as manufactured */
+ if (opal_session->who < OPAL_USER1 &&
+ opal_session->who > OPAL_USER9) {
+ pr_err("Who was not a valid user: %d\n", opal_session->who);
+ return -EINVAL;
+ }
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, act_funcs);
+ dev->func_data = data;
+ dev->func_data[1] = &opal_session->opal_key;
+ dev->func_data[2] = opal_session;
+ ret = next(dev);
+ mutex_unlock(&dev->dev_lock);
+ return ret;
+}
+
+bool opal_unlock_from_suspend(struct opal_dev *dev)
+{
+ struct opal_suspend_data *suspend;
+ void *func_data[3] = { NULL };
+ bool was_failure = false;
+ int ret = 0;
+
+ if (!dev)
+ return false;
+ if (!dev->supported)
+ return false;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev, NULL);
+ dev->func_data = func_data;
+
+ list_for_each_entry(suspend, &dev->unlk_lst, node) {
+ dev->state = 0;
+ dev->func_data[1] = &suspend->unlk.session;
+ dev->func_data[2] = &suspend->unlk;
+ dev->tsn = 0;
+ dev->hsn = 0;
+
+ if (suspend->unlk.session.sum)
+ ret = __opal_lock_unlock_sum(dev);
+ else
+ ret = __opal_lock_unlock(dev);
+ if (ret) {
+ pr_warn("Failed to unlock LR %hhu with sum %d\n",
+ suspend->unlk.session.opal_key.lr,
+ suspend->unlk.session.sum);
+ was_failure = true;
+ }
+ }
+ mutex_unlock(&dev->dev_lock);
+ return was_failure;
+}
+EXPORT_SYMBOL(opal_unlock_from_suspend);
+
+int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
+{
+ void *p;
+ int ret = -ENOTTY;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ if (!dev)
+ return -ENOTSUPP;
+ if (!dev->supported) {
+ pr_err("Not supported\n");
+ return -ENOTSUPP;
+ }
+
+ p = memdup_user(arg, _IOC_SIZE(cmd));
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+
+ switch (cmd) {
+ case IOC_OPAL_SAVE:
+ ret = opal_save(dev, p);
+ break;
+ case IOC_OPAL_LOCK_UNLOCK:
+ ret = opal_lock_unlock(dev, p);
+ break;
+ case IOC_OPAL_TAKE_OWNERSHIP:
+ ret = opal_take_ownership(dev, p);
+ break;
+ case IOC_OPAL_ACTIVATE_LSP:
+ ret = opal_activate_lsp(dev, p);
+ break;
+ case IOC_OPAL_SET_PW:
+ ret = opal_set_new_pw(dev, p);
+ break;
+ case IOC_OPAL_ACTIVATE_USR:
+ ret = opal_activate_user(dev, p);
+ break;
+ case IOC_OPAL_REVERT_TPR:
+ ret = opal_reverttper(dev, p);
+ break;
+ case IOC_OPAL_LR_SETUP:
+ ret = opal_setup_locking_range(dev, p);
+ break;
+ case IOC_OPAL_ADD_USR_TO_LR:
+ ret = opal_add_user_to_lr(dev, p);
+ break;
+ case IOC_OPAL_ENABLE_DISABLE_MBR:
+ ret = opal_enable_disable_shadow_mbr(dev, p);
+ break;
+ case IOC_OPAL_ERASE_LR:
+ ret = opal_erase_locking_range(dev, p);
+ break;
+ case IOC_OPAL_SECURE_ERASE_LR:
+ ret = opal_secure_erase_locking_range(dev, p);
+ break;
+ default:
+ pr_warn("No such Opal Ioctl %u\n", cmd);
+ }
+
+ kfree(p);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sed_ioctl);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 1f863e7..c771d4c 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1265,13 +1265,13 @@ static void ata_scsi_sdev_config(struct scsi_device *sdev)
*/
static int atapi_drain_needed(struct request *rq)
{
- if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC))
+ if (likely(!blk_rq_is_passthrough(rq)))
return 0;
if (!blk_rq_bytes(rq) || op_is_write(req_op(rq)))
return 0;
- return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC;
+ return atapi_cmd_type(scsi_req(rq)->cmd[0]) == ATAPI_MISC;
}
static int ata_scsi_dev_config(struct scsi_device *sdev,
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 223ff2f..f744de7 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -69,6 +69,7 @@ config AMIGA_Z2RAM
config GDROM
tristate "SEGA Dreamcast GD-ROM drive"
depends on SH_DREAMCAST
+ select BLK_SCSI_REQUEST # only for the generic cdrom code
help
A standard SEGA Dreamcast comes with a modified CD ROM drive called a
"GD-ROM" by SEGA to signify it is capable of reading special disks
@@ -114,6 +115,7 @@ config BLK_CPQ_CISS_DA
tristate "Compaq Smart Array 5xxx support"
depends on PCI
select CHECK_SIGNATURE
+ select BLK_SCSI_REQUEST
help
This is the driver for Compaq Smart Array 5xxx controllers.
Everyone using these boards should say Y here.
@@ -386,6 +388,7 @@ config BLK_DEV_RAM_DAX
config CDROM_PKTCDVD
tristate "Packet writing on CD/DVD media (DEPRECATED)"
depends on !UML
+ select BLK_SCSI_REQUEST
help
Note: This driver is deprecated and will be removed from the
kernel in the near future!
@@ -501,6 +504,16 @@ config VIRTIO_BLK
This is the virtual block driver for virtio. It can be used with
lguest or QEMU based VMMs (like KVM or Xen). Say Y or M.
+config VIRTIO_BLK_SCSI
+ bool "SCSI passthrough request for the Virtio block driver"
+ depends on VIRTIO_BLK
+ select BLK_SCSI_REQUEST
+ ---help---
+ Enable support for SCSI passthrough (e.g. the SG_IO ioctl) on
+ virtio-blk devices. This is only supported for the legacy
+ virtio protocol and not enabled by default by any hypervisor.
+ Your probably want to virtio-scsi instead.
+
config BLK_DEV_HD
bool "Very old hard disk (MFM/RLL/IDE) driver"
depends on HAVE_IDE
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index ec9d861..027b876 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -396,8 +396,8 @@ aoeblk_gdalloc(void *vp)
WARN_ON(d->gd);
WARN_ON(d->flags & DEVFL_UP);
blk_queue_max_hw_sectors(q, BLK_DEF_MAX_SECTORS);
- q->backing_dev_info.name = "aoe";
- q->backing_dev_info.ra_pages = READ_AHEAD / PAGE_SIZE;
+ q->backing_dev_info->name = "aoe";
+ q->backing_dev_info->ra_pages = READ_AHEAD / PAGE_SIZE;
d->bufpool = mp;
d->blkq = gd->queue = q;
q->queuedata = d;
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index e5c5b8e..27d6137 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -52,6 +52,7 @@
#include <scsi/scsi.h>
#include <scsi/sg.h>
#include <scsi/scsi_ioctl.h>
+#include <scsi/scsi_request.h>
#include <linux/cdrom.h>
#include <linux/scatterlist.h>
#include <linux/kthread.h>
@@ -1853,8 +1854,8 @@ static void cciss_softirq_done(struct request *rq)
dev_dbg(&h->pdev->dev, "Done with %p\n", rq);
/* set the residual count for pc requests */
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
- rq->resid_len = c->err_info->ResidualCnt;
+ if (blk_rq_is_passthrough(rq))
+ scsi_req(rq)->resid_len = c->err_info->ResidualCnt;
blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO);
@@ -1941,9 +1942,16 @@ static void cciss_get_serial_no(ctlr_info_t *h, int logvol,
static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
int drv_index)
{
- disk->queue = blk_init_queue(do_cciss_request, &h->lock);
+ disk->queue = blk_alloc_queue(GFP_KERNEL);
if (!disk->queue)
goto init_queue_failure;
+
+ disk->queue->cmd_size = sizeof(struct scsi_request);
+ disk->queue->request_fn = do_cciss_request;
+ disk->queue->queue_lock = &h->lock;
+ if (blk_init_allocated_queue(disk->queue) < 0)
+ goto cleanup_queue;
+
sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
disk->major = h->major;
disk->first_minor = drv_index << NWD_SHIFT;
@@ -3075,7 +3083,7 @@ static inline int evaluate_target_status(ctlr_info_t *h,
driver_byte = DRIVER_OK;
msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */
- if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC)
+ if (blk_rq_is_passthrough(cmd->rq))
host_byte = DID_PASSTHROUGH;
else
host_byte = DID_OK;
@@ -3084,7 +3092,7 @@ static inline int evaluate_target_status(ctlr_info_t *h,
host_byte, driver_byte);
if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) {
- if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)
+ if (!blk_rq_is_passthrough(cmd->rq))
dev_warn(&h->pdev->dev, "cmd %p "
"has SCSI Status 0x%x\n",
cmd, cmd->err_info->ScsiStatus);
@@ -3095,31 +3103,23 @@ static inline int evaluate_target_status(ctlr_info_t *h,
sense_key = 0xf & cmd->err_info->SenseInfo[2];
/* no status or recovered error */
if (((sense_key == 0x0) || (sense_key == 0x1)) &&
- (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC))
+ !blk_rq_is_passthrough(cmd->rq))
error_value = 0;
if (check_for_unit_attention(h, cmd)) {
- *retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC);
+ *retry_cmd = !blk_rq_is_passthrough(cmd->rq);
return 0;
}
/* Not SG_IO or similar? */
- if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) {
+ if (!blk_rq_is_passthrough(cmd->rq)) {
if (error_value != 0)
dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION"
" sense key = 0x%x\n", cmd, sense_key);
return error_value;
}
- /* SG_IO or similar, copy sense data back */
- if (cmd->rq->sense) {
- if (cmd->rq->sense_len > cmd->err_info->SenseLen)
- cmd->rq->sense_len = cmd->err_info->SenseLen;
- memcpy(cmd->rq->sense, cmd->err_info->SenseInfo,
- cmd->rq->sense_len);
- } else
- cmd->rq->sense_len = 0;
-
+ scsi_req(cmd->rq)->sense_len = cmd->err_info->SenseLen;
return error_value;
}
@@ -3146,15 +3146,14 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
rq->errors = evaluate_target_status(h, cmd, &retry_cmd);
break;
case CMD_DATA_UNDERRUN:
- if (cmd->rq->cmd_type == REQ_TYPE_FS) {
+ if (!blk_rq_is_passthrough(cmd->rq)) {
dev_warn(&h->pdev->dev, "cmd %p has"
" completed with data underrun "
"reported\n", cmd);
- cmd->rq->resid_len = cmd->err_info->ResidualCnt;
}
break;
case CMD_DATA_OVERRUN:
- if (cmd->rq->cmd_type == REQ_TYPE_FS)
+ if (!blk_rq_is_passthrough(cmd->rq))
dev_warn(&h->pdev->dev, "cciss: cmd %p has"
" completed with data overrun "
"reported\n", cmd);
@@ -3164,7 +3163,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"reported invalid\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_PROTOCOL_ERR:
@@ -3172,7 +3171,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"protocol error\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_HARDWARE_ERR:
@@ -3180,7 +3179,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
" hardware error\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_CONNECTION_LOST:
@@ -3188,7 +3187,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"connection lost\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_ABORTED:
@@ -3196,7 +3195,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"aborted\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ABORT);
break;
case CMD_ABORT_FAILED:
@@ -3204,7 +3203,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"abort failed\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_UNSOLICITED_ABORT:
@@ -3219,21 +3218,21 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
"%p retried too many times\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ABORT);
break;
case CMD_TIMEOUT:
dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
case CMD_UNABORTABLE:
dev_warn(&h->pdev->dev, "cmd %p unabortable\n", cmd);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
break;
default:
@@ -3242,7 +3241,7 @@ static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
cmd->err_info->CommandStatus);
rq->errors = make_status_bytes(SAM_STAT_GOOD,
cmd->err_info->CommandStatus, DRIVER_OK,
- (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_is_passthrough(cmd->rq) ?
DID_PASSTHROUGH : DID_ERROR);
}
@@ -3395,7 +3394,9 @@ static void do_cciss_request(struct request_queue *q)
c->Header.SGList = h->max_cmd_sgentries;
set_performant_mode(h, c);
- if (likely(creq->cmd_type == REQ_TYPE_FS)) {
+ switch (req_op(creq)) {
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
if(h->cciss_read == CCISS_READ_10) {
c->Request.CDB[1] = 0;
c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */
@@ -3425,12 +3426,16 @@ static void do_cciss_request(struct request_queue *q)
c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff;
c->Request.CDB[14] = c->Request.CDB[15] = 0;
}
- } else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) {
- c->Request.CDBLen = creq->cmd_len;
- memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB);
- } else {
+ break;
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
+ c->Request.CDBLen = scsi_req(creq)->cmd_len;
+ memcpy(c->Request.CDB, scsi_req(creq)->cmd, BLK_MAX_CDB);
+ scsi_req(creq)->sense = c->err_info->SenseInfo;
+ break;
+ default:
dev_warn(&h->pdev->dev, "bad request type %d\n",
- creq->cmd_type);
+ creq->cmd_flags);
BUG();
}
@@ -4074,41 +4079,27 @@ clean_up:
static void cciss_interrupt_mode(ctlr_info_t *h)
{
-#ifdef CONFIG_PCI_MSI
- int err;
- struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1},
- {0, 2}, {0, 3}
- };
+ int ret;
/* Some boards advertise MSI but don't really support it */
if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
(h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
goto default_int_mode;
- if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
- err = pci_enable_msix_exact(h->pdev, cciss_msix_entries, 4);
- if (!err) {
- h->intr[0] = cciss_msix_entries[0].vector;
- h->intr[1] = cciss_msix_entries[1].vector;
- h->intr[2] = cciss_msix_entries[2].vector;
- h->intr[3] = cciss_msix_entries[3].vector;
- h->msix_vector = 1;
- return;
- } else {
- dev_warn(&h->pdev->dev,
- "MSI-X init failed %d\n", err);
- }
- }
- if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
- if (!pci_enable_msi(h->pdev))
- h->msi_vector = 1;
- else
- dev_warn(&h->pdev->dev, "MSI init failed\n");
+ ret = pci_alloc_irq_vectors(h->pdev, 4, 4, PCI_IRQ_MSIX);
+ if (ret >= 0) {
+ h->intr[0] = pci_irq_vector(h->pdev, 0);
+ h->intr[1] = pci_irq_vector(h->pdev, 1);
+ h->intr[2] = pci_irq_vector(h->pdev, 2);
+ h->intr[3] = pci_irq_vector(h->pdev, 3);
+ return;
}
+
+ ret = pci_alloc_irq_vectors(h->pdev, 1, 1, PCI_IRQ_MSI);
+
default_int_mode:
-#endif /* CONFIG_PCI_MSI */
/* if we get here we're going to use the default interrupt mode */
- h->intr[h->intr_mode] = h->pdev->irq;
+ h->intr[h->intr_mode] = pci_irq_vector(h->pdev, 0);
return;
}
@@ -4888,7 +4879,7 @@ static int cciss_request_irq(ctlr_info_t *h,
irqreturn_t (*msixhandler)(int, void *),
irqreturn_t (*intxhandler)(int, void *))
{
- if (h->msix_vector || h->msi_vector) {
+ if (h->pdev->msi_enabled || h->pdev->msix_enabled) {
if (!request_irq(h->intr[h->intr_mode], msixhandler,
0, h->devname, h))
return 0;
@@ -4934,12 +4925,7 @@ static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h)
int ctlr = h->ctlr;
free_irq(h->intr[h->intr_mode], h);
-#ifdef CONFIG_PCI_MSI
- if (h->msix_vector)
- pci_disable_msix(h->pdev);
- else if (h->msi_vector)
- pci_disable_msi(h->pdev);
-#endif /* CONFIG_PCI_MSI */
+ pci_free_irq_vectors(h->pdev);
cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds);
cciss_free_scatterlists(h);
cciss_free_cmd_pool(h);
@@ -5295,12 +5281,7 @@ static void cciss_remove_one(struct pci_dev *pdev)
cciss_shutdown(pdev);
-#ifdef CONFIG_PCI_MSI
- if (h->msix_vector)
- pci_disable_msix(h->pdev);
- else if (h->msi_vector)
- pci_disable_msi(h->pdev);
-#endif /* CONFIG_PCI_MSI */
+ pci_free_irq_vectors(h->pdev);
iounmap(h->transtable);
iounmap(h->cfgtable);
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index 7fda30e..4affa94 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -90,8 +90,6 @@ struct ctlr_info
# define SIMPLE_MODE_INT 2
# define MEMQ_MODE_INT 3
unsigned int intr[4];
- unsigned int msix_vector;
- unsigned int msi_vector;
int intr_mode;
int cciss_max_sectors;
BYTE cciss_read;
@@ -333,7 +331,7 @@ static unsigned long SA5_performant_completed(ctlr_info_t *h)
*/
register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
/* msi auto clears the interrupt pending bit. */
- if (!(h->msi_vector || h->msix_vector)) {
+ if (!(h->pdev->msi_enabled || h->pdev->msix_enabled)) {
writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR);
/* Do a read in order to flush the write to the controller
* (as per spec.)
@@ -393,7 +391,7 @@ static bool SA5_performant_intr_pending(ctlr_info_t *h)
if (!register_value)
return false;
- if (h->msi_vector || h->msix_vector)
+ if (h->pdev->msi_enabled || h->pdev->msix_enabled)
return true;
/* Read outbound doorbell to flush */
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index c3ff60c..615e5b5 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2462,7 +2462,7 @@ static int drbd_congested(void *congested_data, int bdi_bits)
if (get_ldev(device)) {
q = bdev_get_queue(device->ldev->backing_bdev);
- r = bdi_congested(&q->backing_dev_info, bdi_bits);
+ r = bdi_congested(q->backing_dev_info, bdi_bits);
put_ldev(device);
if (r)
reason = 'b';
@@ -2834,8 +2834,8 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
/* we have no partitions. we contain only ourselves. */
device->this_bdev->bd_contains = device->this_bdev;
- q->backing_dev_info.congested_fn = drbd_congested;
- q->backing_dev_info.congested_data = device;
+ q->backing_dev_info->congested_fn = drbd_congested;
+ q->backing_dev_info->congested_data = device;
blk_queue_make_request(q, drbd_make_request);
blk_queue_write_cache(q, true, true);
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index f35db29..908c704 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1328,11 +1328,13 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
if (b) {
blk_queue_stack_limits(q, b);
- if (q->backing_dev_info.ra_pages != b->backing_dev_info.ra_pages) {
+ if (q->backing_dev_info->ra_pages !=
+ b->backing_dev_info->ra_pages) {
drbd_info(device, "Adjusting my ra_pages to backing device's (%lu -> %lu)\n",
- q->backing_dev_info.ra_pages,
- b->backing_dev_info.ra_pages);
- q->backing_dev_info.ra_pages = b->backing_dev_info.ra_pages;
+ q->backing_dev_info->ra_pages,
+ b->backing_dev_info->ra_pages);
+ q->backing_dev_info->ra_pages =
+ b->backing_dev_info->ra_pages;
}
}
fixup_discard_if_not_supported(q);
@@ -3345,7 +3347,7 @@ static void device_to_statistics(struct device_statistics *s,
s->dev_disk_flags = md->flags;
q = bdev_get_queue(device->ldev->backing_bdev);
s->dev_lower_blocked =
- bdi_congested(&q->backing_dev_info,
+ bdi_congested(q->backing_dev_info,
(1 << WB_async_congested) |
(1 << WB_sync_congested));
put_ldev(device);
diff --git a/drivers/block/drbd/drbd_proc.c b/drivers/block/drbd/drbd_proc.c
index be2b93f..8378142 100644
--- a/drivers/block/drbd/drbd_proc.c
+++ b/drivers/block/drbd/drbd_proc.c
@@ -288,7 +288,7 @@ static int drbd_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, "%2d: cs:Unconfigured\n", i);
} else {
/* reset device->congestion_reason */
- bdi_rw_congested(&device->rq_queue->backing_dev_info);
+ bdi_rw_congested(device->rq_queue->backing_dev_info);
nc = rcu_dereference(first_peer_device(device)->connection->net_conf);
wp = nc ? nc->wire_protocol - DRBD_PROT_A + 'A' : ' ';
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index b489ac2..652114a 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -927,7 +927,7 @@ static bool remote_due_to_read_balancing(struct drbd_device *device, sector_t se
switch (rbm) {
case RB_CONGESTED_REMOTE:
- bdi = &device->ldev->backing_bdev->bd_disk->queue->backing_dev_info;
+ bdi = device->ldev->backing_bdev->bd_disk->queue->backing_dev_info;
return bdi_read_congested(bdi);
case RB_LEAST_PENDING:
return atomic_read(&device->local_cnt) >
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index a391a3c..45b4384 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -2900,8 +2900,8 @@ static void do_fd_request(struct request_queue *q)
return;
if (WARN(atomic_read(&usage_count) == 0,
- "warning: usage count=0, current_req=%p sect=%ld type=%x flags=%llx\n",
- current_req, (long)blk_rq_pos(current_req), current_req->cmd_type,
+ "warning: usage count=0, current_req=%p sect=%ld flags=%llx\n",
+ current_req, (long)blk_rq_pos(current_req),
(unsigned long long) current_req->cmd_flags))
return;
@@ -3119,7 +3119,7 @@ static int raw_cmd_copyin(int cmd, void __user *param,
*rcmd = NULL;
loop:
- ptr = kmalloc(sizeof(struct floppy_raw_cmd), GFP_USER);
+ ptr = kmalloc(sizeof(struct floppy_raw_cmd), GFP_KERNEL);
if (!ptr)
return -ENOMEM;
*rcmd = ptr;
diff --git a/drivers/block/hd.c b/drivers/block/hd.c
index a9b48ed..6043648 100644
--- a/drivers/block/hd.c
+++ b/drivers/block/hd.c
@@ -626,30 +626,29 @@ repeat:
req_data_dir(req) == READ ? "read" : "writ",
cyl, head, sec, nsect, bio_data(req->bio));
#endif
- if (req->cmd_type == REQ_TYPE_FS) {
- switch (rq_data_dir(req)) {
- case READ:
- hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_READ,
- &read_intr);
- if (reset)
- goto repeat;
- break;
- case WRITE:
- hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_WRITE,
- &write_intr);
- if (reset)
- goto repeat;
- if (wait_DRQ()) {
- bad_rw_intr();
- goto repeat;
- }
- outsw(HD_DATA, bio_data(req->bio), 256);
- break;
- default:
- printk("unknown hd-command\n");
- hd_end_request_cur(-EIO);
- break;
+
+ switch (req_op(req)) {
+ case REQ_OP_READ:
+ hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_READ,
+ &read_intr);
+ if (reset)
+ goto repeat;
+ break;
+ case REQ_OP_WRITE:
+ hd_out(disk, nsect, sec, head, cyl, ATA_CMD_PIO_WRITE,
+ &write_intr);
+ if (reset)
+ goto repeat;
+ if (wait_DRQ()) {
+ bad_rw_intr();
+ goto repeat;
}
+ outsw(HD_DATA, bio_data(req->bio), 256);
+ break;
+ default:
+ printk("unknown hd-command\n");
+ hd_end_request_cur(-EIO);
+ break;
}
}
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index f347285..3043771 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1097,9 +1097,12 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
if ((unsigned int) info->lo_encrypt_key_size > LO_KEY_SIZE)
return -EINVAL;
+ /* I/O need to be drained during transfer transition */
+ blk_mq_freeze_queue(lo->lo_queue);
+
err = loop_release_xfer(lo);
if (err)
- return err;
+ goto exit;
if (info->lo_encrypt_type) {
unsigned int type = info->lo_encrypt_type;
@@ -1114,12 +1117,14 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
err = loop_init_xfer(lo, xfer, info);
if (err)
- return err;
+ goto exit;
if (lo->lo_offset != info->lo_offset ||
lo->lo_sizelimit != info->lo_sizelimit)
- if (figure_loop_size(lo, info->lo_offset, info->lo_sizelimit))
- return -EFBIG;
+ if (figure_loop_size(lo, info->lo_offset, info->lo_sizelimit)) {
+ err = -EFBIG;
+ goto exit;
+ }
loop_config_discard(lo);
@@ -1156,7 +1161,9 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
/* update dio if lo_offset or transfer is changed */
__loop_update_dio(lo, lo->use_dio);
- return 0;
+ exit:
+ blk_mq_unfreeze_queue(lo->lo_queue);
+ return err;
}
static int
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index e937fcf7..286f276 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -670,15 +670,17 @@ static void mg_request_poll(struct request_queue *q)
break;
}
- if (unlikely(host->req->cmd_type != REQ_TYPE_FS)) {
- mg_end_request_cur(host, -EIO);
- continue;
- }
-
- if (rq_data_dir(host->req) == READ)
+ switch (req_op(host->req)) {
+ case REQ_OP_READ:
mg_read(host->req);
- else
+ break;
+ case REQ_OP_WRITE:
mg_write(host->req);
+ break;
+ default:
+ mg_end_request_cur(host, -EIO);
+ break;
+ }
}
}
@@ -687,13 +689,15 @@ static unsigned int mg_issue_req(struct request *req,
unsigned int sect_num,
unsigned int sect_cnt)
{
- if (rq_data_dir(req) == READ) {
+ switch (req_op(host->req)) {
+ case REQ_OP_READ:
if (mg_out(host, sect_num, sect_cnt, MG_CMD_RD, &mg_read_intr)
!= MG_ERR_NONE) {
mg_bad_rw_intr(host);
return host->error;
}
- } else {
+ break;
+ case REQ_OP_WRITE:
/* TODO : handler */
outb(ATA_NIEN, (unsigned long)host->dev_base + MG_REG_DRV_CTRL);
if (mg_out(host, sect_num, sect_cnt, MG_CMD_WR, &mg_write_intr)
@@ -712,6 +716,10 @@ static unsigned int mg_issue_req(struct request *req,
mod_timer(&host->timer, jiffies + 3 * HZ);
outb(MG_CMD_WR_CONF, (unsigned long)host->dev_base +
MG_REG_COMMAND);
+ break;
+ default:
+ mg_end_request_cur(host, -EIO);
+ break;
}
return MG_ERR_NONE;
}
@@ -753,11 +761,6 @@ static void mg_request(struct request_queue *q)
continue;
}
- if (unlikely(req->cmd_type != REQ_TYPE_FS)) {
- mg_end_request_cur(host, -EIO);
- continue;
- }
-
if (!mg_issue_req(req, host, sect_num, sect_cnt))
return;
}
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 9fd06ee..0be84a3 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -41,6 +41,9 @@
#include <linux/nbd.h>
+static DEFINE_IDR(nbd_index_idr);
+static DEFINE_MUTEX(nbd_index_mutex);
+
struct nbd_sock {
struct socket *sock;
struct mutex tx_lock;
@@ -89,8 +92,9 @@ static struct dentry *nbd_dbg_dir;
#define NBD_MAGIC 0x68797548
static unsigned int nbds_max = 16;
-static struct nbd_device *nbd_dev;
static int max_part;
+static struct workqueue_struct *recv_workqueue;
+static int part_shift;
static inline struct device *nbd_to_dev(struct nbd_device *nbd)
{
@@ -193,13 +197,6 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req,
set_bit(NBD_TIMEDOUT, &nbd->runtime_flags);
req->errors++;
- /*
- * If our disconnect packet times out then we're already holding the
- * config_lock and could deadlock here, so just set an error and return,
- * we'll handle shutting everything down later.
- */
- if (req->cmd_type == REQ_TYPE_DRV_PRIV)
- return BLK_EH_HANDLED;
mutex_lock(&nbd->config_lock);
sock_shutdown(nbd);
mutex_unlock(&nbd->config_lock);
@@ -278,14 +275,29 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
u32 type;
u32 tag = blk_mq_unique_tag(req);
- if (req_op(req) == REQ_OP_DISCARD)
+ switch (req_op(req)) {
+ case REQ_OP_DISCARD:
type = NBD_CMD_TRIM;
- else if (req_op(req) == REQ_OP_FLUSH)
+ break;
+ case REQ_OP_FLUSH:
type = NBD_CMD_FLUSH;
- else if (rq_data_dir(req) == WRITE)
+ break;
+ case REQ_OP_WRITE:
type = NBD_CMD_WRITE;
- else
+ break;
+ case REQ_OP_READ:
type = NBD_CMD_READ;
+ break;
+ default:
+ return -EIO;
+ }
+
+ if (rq_data_dir(req) == WRITE &&
+ (nbd->flags & NBD_FLAG_READ_ONLY)) {
+ dev_err_ratelimited(disk_to_dev(nbd->disk),
+ "Write on read-only\n");
+ return -EIO;
+ }
memset(&request, 0, sizeof(request));
request.magic = htonl(NBD_REQUEST_MAGIC);
@@ -510,18 +522,6 @@ static void nbd_handle_cmd(struct nbd_cmd *cmd, int index)
goto error_out;
}
- if (req->cmd_type != REQ_TYPE_FS &&
- req->cmd_type != REQ_TYPE_DRV_PRIV)
- goto error_out;
-
- if (req->cmd_type == REQ_TYPE_FS &&
- rq_data_dir(req) == WRITE &&
- (nbd->flags & NBD_FLAG_READ_ONLY)) {
- dev_err_ratelimited(disk_to_dev(nbd->disk),
- "Write on read-only\n");
- goto error_out;
- }
-
req->errors = 0;
nsock = nbd->socks[index];
@@ -785,7 +785,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
INIT_WORK(&args[i].work, recv_work);
args[i].nbd = nbd;
args[i].index = i;
- queue_work(system_long_wq, &args[i].work);
+ queue_work(recv_workqueue, &args[i].work);
}
wait_event_interruptible(nbd->recv_wq,
atomic_read(&nbd->recv_threads) == 0);
@@ -996,6 +996,103 @@ static struct blk_mq_ops nbd_mq_ops = {
.timeout = nbd_xmit_timeout,
};
+static void nbd_dev_remove(struct nbd_device *nbd)
+{
+ struct gendisk *disk = nbd->disk;
+ nbd->magic = 0;
+ if (disk) {
+ del_gendisk(disk);
+ blk_cleanup_queue(disk->queue);
+ blk_mq_free_tag_set(&nbd->tag_set);
+ put_disk(disk);
+ }
+ kfree(nbd);
+}
+
+static int nbd_dev_add(int index)
+{
+ struct nbd_device *nbd;
+ struct gendisk *disk;
+ struct request_queue *q;
+ int err = -ENOMEM;
+
+ nbd = kzalloc(sizeof(struct nbd_device), GFP_KERNEL);
+ if (!nbd)
+ goto out;
+
+ disk = alloc_disk(1 << part_shift);
+ if (!disk)
+ goto out_free_nbd;
+
+ if (index >= 0) {
+ err = idr_alloc(&nbd_index_idr, nbd, index, index + 1,
+ GFP_KERNEL);
+ if (err == -ENOSPC)
+ err = -EEXIST;
+ } else {
+ err = idr_alloc(&nbd_index_idr, nbd, 0, 0, GFP_KERNEL);
+ if (err >= 0)
+ index = err;
+ }
+ if (err < 0)
+ goto out_free_disk;
+
+ nbd->disk = disk;
+ nbd->tag_set.ops = &nbd_mq_ops;
+ nbd->tag_set.nr_hw_queues = 1;
+ nbd->tag_set.queue_depth = 128;
+ nbd->tag_set.numa_node = NUMA_NO_NODE;
+ nbd->tag_set.cmd_size = sizeof(struct nbd_cmd);
+ nbd->tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
+ BLK_MQ_F_SG_MERGE | BLK_MQ_F_BLOCKING;
+ nbd->tag_set.driver_data = nbd;
+
+ err = blk_mq_alloc_tag_set(&nbd->tag_set);
+ if (err)
+ goto out_free_idr;
+
+ q = blk_mq_init_queue(&nbd->tag_set);
+ if (IS_ERR(q)) {
+ err = PTR_ERR(q);
+ goto out_free_tags;
+ }
+ disk->queue = q;
+
+ /*
+ * Tell the block layer that we are not a rotational device
+ */
+ queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue);
+ queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, disk->queue);
+ disk->queue->limits.discard_granularity = 512;
+ blk_queue_max_discard_sectors(disk->queue, UINT_MAX);
+ disk->queue->limits.discard_zeroes_data = 0;
+ blk_queue_max_hw_sectors(disk->queue, 65536);
+ disk->queue->limits.max_sectors = 256;
+
+ nbd->magic = NBD_MAGIC;
+ mutex_init(&nbd->config_lock);
+ disk->major = NBD_MAJOR;
+ disk->first_minor = index << part_shift;
+ disk->fops = &nbd_fops;
+ disk->private_data = nbd;
+ sprintf(disk->disk_name, "nbd%d", index);
+ init_waitqueue_head(&nbd->recv_wq);
+ nbd_reset(nbd);
+ add_disk(disk);
+ return index;
+
+out_free_tags:
+ blk_mq_free_tag_set(&nbd->tag_set);
+out_free_idr:
+ idr_remove(&nbd_index_idr, index);
+out_free_disk:
+ put_disk(disk);
+out_free_nbd:
+ kfree(nbd);
+out:
+ return err;
+}
+
/*
* And here should be modules and kernel interface
* (Just smiley confuses emacs :-)
@@ -1003,9 +1100,7 @@ static struct blk_mq_ops nbd_mq_ops = {
static int __init nbd_init(void)
{
- int err = -ENOMEM;
int i;
- int part_shift;
BUILD_BUG_ON(sizeof(struct nbd_request) != 28);
@@ -1034,111 +1129,38 @@ static int __init nbd_init(void)
if (nbds_max > 1UL << (MINORBITS - part_shift))
return -EINVAL;
-
- nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
- if (!nbd_dev)
+ recv_workqueue = alloc_workqueue("knbd-recv",
+ WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
+ if (!recv_workqueue)
return -ENOMEM;
- for (i = 0; i < nbds_max; i++) {
- struct request_queue *q;
- struct gendisk *disk = alloc_disk(1 << part_shift);
- if (!disk)
- goto out;
- nbd_dev[i].disk = disk;
-
- nbd_dev[i].tag_set.ops = &nbd_mq_ops;
- nbd_dev[i].tag_set.nr_hw_queues = 1;
- nbd_dev[i].tag_set.queue_depth = 128;
- nbd_dev[i].tag_set.numa_node = NUMA_NO_NODE;
- nbd_dev[i].tag_set.cmd_size = sizeof(struct nbd_cmd);
- nbd_dev[i].tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
- BLK_MQ_F_SG_MERGE | BLK_MQ_F_BLOCKING;
- nbd_dev[i].tag_set.driver_data = &nbd_dev[i];
-
- err = blk_mq_alloc_tag_set(&nbd_dev[i].tag_set);
- if (err) {
- put_disk(disk);
- goto out;
- }
-
- /*
- * The new linux 2.5 block layer implementation requires
- * every gendisk to have its very own request_queue struct.
- * These structs are big so we dynamically allocate them.
- */
- q = blk_mq_init_queue(&nbd_dev[i].tag_set);
- if (IS_ERR(q)) {
- blk_mq_free_tag_set(&nbd_dev[i].tag_set);
- put_disk(disk);
- goto out;
- }
- disk->queue = q;
-
- /*
- * Tell the block layer that we are not a rotational device
- */
- queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue);
- queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, disk->queue);
- disk->queue->limits.discard_granularity = 512;
- blk_queue_max_discard_sectors(disk->queue, UINT_MAX);
- disk->queue->limits.discard_zeroes_data = 0;
- blk_queue_max_hw_sectors(disk->queue, 65536);
- disk->queue->limits.max_sectors = 256;
- }
-
- if (register_blkdev(NBD_MAJOR, "nbd")) {
- err = -EIO;
- goto out;
- }
-
- printk(KERN_INFO "nbd: registered device at major %d\n", NBD_MAJOR);
+ if (register_blkdev(NBD_MAJOR, "nbd"))
+ return -EIO;
nbd_dbg_init();
- for (i = 0; i < nbds_max; i++) {
- struct gendisk *disk = nbd_dev[i].disk;
- nbd_dev[i].magic = NBD_MAGIC;
- mutex_init(&nbd_dev[i].config_lock);
- disk->major = NBD_MAJOR;
- disk->first_minor = i << part_shift;
- disk->fops = &nbd_fops;
- disk->private_data = &nbd_dev[i];
- sprintf(disk->disk_name, "nbd%d", i);
- init_waitqueue_head(&nbd_dev[i].recv_wq);
- nbd_reset(&nbd_dev[i]);
- add_disk(disk);
- }
+ mutex_lock(&nbd_index_mutex);
+ for (i = 0; i < nbds_max; i++)
+ nbd_dev_add(i);
+ mutex_unlock(&nbd_index_mutex);
+ return 0;
+}
+static int nbd_exit_cb(int id, void *ptr, void *data)
+{
+ struct nbd_device *nbd = ptr;
+ nbd_dev_remove(nbd);
return 0;
-out:
- while (i--) {
- blk_mq_free_tag_set(&nbd_dev[i].tag_set);
- blk_cleanup_queue(nbd_dev[i].disk->queue);
- put_disk(nbd_dev[i].disk);
- }
- kfree(nbd_dev);
- return err;
}
static void __exit nbd_cleanup(void)
{
- int i;
-
nbd_dbg_close();
- for (i = 0; i < nbds_max; i++) {
- struct gendisk *disk = nbd_dev[i].disk;
- nbd_dev[i].magic = 0;
- if (disk) {
- del_gendisk(disk);
- blk_cleanup_queue(disk->queue);
- blk_mq_free_tag_set(&nbd_dev[i].tag_set);
- put_disk(disk);
- }
- }
+ idr_for_each(&nbd_index_idr, &nbd_exit_cb, NULL);
+ idr_destroy(&nbd_index_idr);
+ destroy_workqueue(recv_workqueue);
unregister_blkdev(NBD_MAJOR, "nbd");
- kfree(nbd_dev);
- printk(KERN_INFO "nbd: unregistered device at major %d\n", NBD_MAJOR);
}
module_init(nbd_init);
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index c0e14e5..6f2e565 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -420,7 +420,8 @@ static void null_lnvm_end_io(struct request *rq, int error)
{
struct nvm_rq *rqd = rq->end_io_data;
- nvm_end_io(rqd, error);
+ rqd->error = error;
+ nvm_end_io(rqd);
blk_put_request(rq);
}
@@ -431,11 +432,11 @@ static int null_lnvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
struct request *rq;
struct bio *bio = rqd->bio;
- rq = blk_mq_alloc_request(q, bio_data_dir(bio), 0);
+ rq = blk_mq_alloc_request(q,
+ op_is_write(bio_op(bio)) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
if (IS_ERR(rq))
return -ENOMEM;
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
rq->__sector = bio->bi_iter.bi_sector;
rq->ioprio = bio_prio(bio);
@@ -460,7 +461,6 @@ static int null_lnvm_id(struct nvm_dev *dev, struct nvm_id *id)
id->ver_id = 0x1;
id->vmnt = 0;
- id->cgrps = 1;
id->cap = 0x2;
id->dom = 0x1;
@@ -479,7 +479,7 @@ static int null_lnvm_id(struct nvm_dev *dev, struct nvm_id *id)
sector_div(size, bs); /* convert size to pages */
size >>= 8; /* concert size to pgs pr blk */
- grp = &id->groups[0];
+ grp = &id->grp;
grp->mtype = 0;
grp->fmtype = 0;
grp->num_ch = 1;
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index 92900f5..8127b82 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -308,12 +308,6 @@ static void osdblk_rq_fn(struct request_queue *q)
if (!rq)
break;
- /* filter out block requests we don't understand */
- if (rq->cmd_type != REQ_TYPE_FS) {
- blk_end_request_all(rq, 0);
- continue;
- }
-
/* deduce our operation (read, write, flush) */
/* I wish the block layer simplified cmd_type/cmd_flags/cmd[]
* into a clearly defined set of RPC commands:
diff --git a/drivers/block/paride/Kconfig b/drivers/block/paride/Kconfig
index efefb5a..3a15247 100644
--- a/drivers/block/paride/Kconfig
+++ b/drivers/block/paride/Kconfig
@@ -25,6 +25,7 @@ config PARIDE_PD
config PARIDE_PCD
tristate "Parallel port ATAPI CD-ROMs"
depends on PARIDE
+ select BLK_SCSI_REQUEST # only for the generic cdrom code
---help---
This option enables the high-level driver for ATAPI CD-ROM devices
connected through a parallel port. If you chose to build PARIDE
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index 5fd2d0e..10aed84 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -273,7 +273,7 @@ static const struct block_device_operations pcd_bdops = {
.check_events = pcd_block_check_events,
};
-static struct cdrom_device_ops pcd_dops = {
+static const struct cdrom_device_ops pcd_dops = {
.open = pcd_open,
.release = pcd_release,
.drive_status = pcd_drive_status,
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index c3ed2fc..644ba08 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -439,18 +439,16 @@ static int pd_retries = 0; /* i/o error retry count */
static int pd_block; /* address of next requested block */
static int pd_count; /* number of blocks still to do */
static int pd_run; /* sectors in current cluster */
-static int pd_cmd; /* current command READ/WRITE */
static char *pd_buf; /* buffer for request in progress */
static enum action do_pd_io_start(void)
{
- if (pd_req->cmd_type == REQ_TYPE_DRV_PRIV) {
+ switch (req_op(pd_req)) {
+ case REQ_OP_DRV_IN:
phase = pd_special;
return pd_special();
- }
-
- pd_cmd = rq_data_dir(pd_req);
- if (pd_cmd == READ || pd_cmd == WRITE) {
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
pd_block = blk_rq_pos(pd_req);
pd_count = blk_rq_cur_sectors(pd_req);
if (pd_block + pd_count > get_capacity(pd_req->rq_disk))
@@ -458,7 +456,7 @@ static enum action do_pd_io_start(void)
pd_run = blk_rq_sectors(pd_req);
pd_buf = bio_data(pd_req->bio);
pd_retries = 0;
- if (pd_cmd == READ)
+ if (req_op(pd_req) == REQ_OP_READ)
return do_pd_read_start();
else
return do_pd_write_start();
@@ -723,11 +721,10 @@ static int pd_special_command(struct pd_unit *disk,
struct request *rq;
int err = 0;
- rq = blk_get_request(disk->gd->queue, READ, __GFP_RECLAIM);
+ rq = blk_get_request(disk->gd->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
rq->special = func;
err = blk_execute_rq(disk->gd->queue, disk->gd, rq, 0);
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 1b94c1c..66d846b 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -704,10 +704,10 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
int ret = 0;
rq = blk_get_request(q, (cgc->data_direction == CGC_DATA_WRITE) ?
- WRITE : READ, __GFP_RECLAIM);
+ REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
- blk_rq_set_block_pc(rq);
+ scsi_req_init(rq);
if (cgc->buflen) {
ret = blk_rq_map_kern(q, rq, cgc->buffer, cgc->buflen,
@@ -716,8 +716,8 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
goto out;
}
- rq->cmd_len = COMMAND_SIZE(cgc->cmd[0]);
- memcpy(rq->cmd, cgc->cmd, CDROM_PACKET_SIZE);
+ scsi_req(rq)->cmd_len = COMMAND_SIZE(cgc->cmd[0]);
+ memcpy(scsi_req(rq)->cmd, cgc->cmd, CDROM_PACKET_SIZE);
rq->timeout = 60*HZ;
if (cgc->quiet)
@@ -1243,7 +1243,7 @@ try_next_bio:
&& pd->bio_queue_size <= pd->write_congestion_off);
spin_unlock(&pd->lock);
if (wakeup) {
- clear_bdi_congested(&pd->disk->queue->backing_dev_info,
+ clear_bdi_congested(pd->disk->queue->backing_dev_info,
BLK_RW_ASYNC);
}
@@ -2370,7 +2370,7 @@ static void pkt_make_request_write(struct request_queue *q, struct bio *bio)
spin_lock(&pd->lock);
if (pd->write_congestion_on > 0
&& pd->bio_queue_size >= pd->write_congestion_on) {
- set_bdi_congested(&q->backing_dev_info, BLK_RW_ASYNC);
+ set_bdi_congested(q->backing_dev_info, BLK_RW_ASYNC);
do {
spin_unlock(&pd->lock);
congestion_wait(BLK_RW_ASYNC, HZ);
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index 76f33c8..a809e3e 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -196,16 +196,19 @@ static void ps3disk_do_request(struct ps3_storage_device *dev,
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
while ((req = blk_fetch_request(q))) {
- if (req_op(req) == REQ_OP_FLUSH) {
+ switch (req_op(req)) {
+ case REQ_OP_FLUSH:
if (ps3disk_submit_flush_request(dev, req))
- break;
- } else if (req->cmd_type == REQ_TYPE_FS) {
+ return;
+ break;
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
if (ps3disk_submit_request_sg(dev, req))
- break;
- } else {
+ return;
+ break;
+ default:
blk_dump_rq_flags(req, DEVICE_NAME " bad request");
__blk_end_request_all(req, -EIO);
- continue;
}
}
}
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 436baa6..362cecc 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -4099,19 +4099,21 @@ static void rbd_queue_workfn(struct work_struct *work)
bool must_be_locked;
int result;
- if (rq->cmd_type != REQ_TYPE_FS) {
- dout("%s: non-fs request type %d\n", __func__,
- (int) rq->cmd_type);
- result = -EIO;
- goto err;
- }
-
- if (req_op(rq) == REQ_OP_DISCARD)
+ switch (req_op(rq)) {
+ case REQ_OP_DISCARD:
op_type = OBJ_OP_DISCARD;
- else if (req_op(rq) == REQ_OP_WRITE)
+ break;
+ case REQ_OP_WRITE:
op_type = OBJ_OP_WRITE;
- else
+ break;
+ case REQ_OP_READ:
op_type = OBJ_OP_READ;
+ break;
+ default:
+ dout("%s: non-fs request type %d\n", __func__, req_op(rq));
+ result = -EIO;
+ goto err;
+ }
/* Ignore/skip any zero-length requests */
@@ -4524,7 +4526,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
q->limits.discard_zeroes_data = 1;
if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
- q->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES;
+ q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
disk->queue = q;
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index abf805e..27833e4 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -1204,10 +1204,11 @@ static void skd_complete_special(struct skd_device *skdev,
static int skd_bdev_ioctl(struct block_device *bdev, fmode_t mode,
uint cmd_in, ulong arg)
{
- int rc = 0;
+ static const int sg_version_num = 30527;
+ int rc = 0, timeout;
struct gendisk *disk = bdev->bd_disk;
struct skd_device *skdev = disk->private_data;
- void __user *p = (void *)arg;
+ int __user *p = (int __user *)arg;
pr_debug("%s:%s:%d %s: CMD[%s] ioctl mode 0x%x, cmd 0x%x arg %0lx\n",
skdev->name, __func__, __LINE__,
@@ -1218,12 +1219,18 @@ static int skd_bdev_ioctl(struct block_device *bdev, fmode_t mode,
switch (cmd_in) {
case SG_SET_TIMEOUT:
+ rc = get_user(timeout, p);
+ if (!rc)
+ disk->queue->sg_timeout = clock_t_to_jiffies(timeout);
+ break;
case SG_GET_TIMEOUT:
+ rc = jiffies_to_clock_t(disk->queue->sg_timeout);
+ break;
case SG_GET_VERSION_NUM:
- rc = scsi_cmd_ioctl(disk->queue, disk, mode, cmd_in, p);
+ rc = put_user(sg_version_num, p);
break;
case SG_IO:
- rc = skd_ioctl_sg_io(skdev, mode, p);
+ rc = skd_ioctl_sg_io(skdev, mode, (void __user *)arg);
break;
default:
diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c
index 0e93ad7..c8e072c 100644
--- a/drivers/block/sx8.c
+++ b/drivers/block/sx8.c
@@ -567,7 +567,7 @@ static struct carm_request *carm_get_special(struct carm_host *host)
if (!crq)
return NULL;
- rq = blk_get_request(host->oob_q, WRITE /* bogus */, GFP_KERNEL);
+ rq = blk_get_request(host->oob_q, REQ_OP_DRV_OUT, GFP_KERNEL);
if (IS_ERR(rq)) {
spin_lock_irqsave(&host->lock, flags);
carm_put_request(host, crq);
@@ -620,7 +620,6 @@ static int carm_array_info (struct carm_host *host, unsigned int array_idx)
spin_unlock_irq(&host->lock);
DPRINTK("blk_execute_rq_nowait, tag == %u\n", idx);
- crq->rq->cmd_type = REQ_TYPE_DRV_PRIV;
crq->rq->special = crq;
blk_execute_rq_nowait(host->oob_q, NULL, crq->rq, true, NULL);
@@ -661,7 +660,6 @@ static int carm_send_special (struct carm_host *host, carm_sspc_t func)
crq->msg_bucket = (u32) rc;
DPRINTK("blk_execute_rq_nowait, tag == %u\n", idx);
- crq->rq->cmd_type = REQ_TYPE_DRV_PRIV;
crq->rq->special = crq;
blk_execute_rq_nowait(host->oob_q, NULL, crq->rq, true, NULL);
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 264c5ea..024b473 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -52,11 +52,13 @@ struct virtio_blk {
};
struct virtblk_req {
- struct request *req;
- struct virtio_blk_outhdr out_hdr;
+#ifdef CONFIG_VIRTIO_BLK_SCSI
+ struct scsi_request sreq; /* for SCSI passthrough, must be first */
+ u8 sense[SCSI_SENSE_BUFFERSIZE];
struct virtio_scsi_inhdr in_hdr;
+#endif
+ struct virtio_blk_outhdr out_hdr;
u8 status;
- u8 sense[SCSI_SENSE_BUFFERSIZE];
struct scatterlist sg[];
};
@@ -72,28 +74,88 @@ static inline int virtblk_result(struct virtblk_req *vbr)
}
}
-static int __virtblk_add_req(struct virtqueue *vq,
- struct virtblk_req *vbr,
- struct scatterlist *data_sg,
- bool have_data)
+/*
+ * If this is a packet command we need a couple of additional headers. Behind
+ * the normal outhdr we put a segment with the scsi command block, and before
+ * the normal inhdr we put the sense data and the inhdr with additional status
+ * information.
+ */
+#ifdef CONFIG_VIRTIO_BLK_SCSI
+static int virtblk_add_req_scsi(struct virtqueue *vq, struct virtblk_req *vbr,
+ struct scatterlist *data_sg, bool have_data)
{
struct scatterlist hdr, status, cmd, sense, inhdr, *sgs[6];
unsigned int num_out = 0, num_in = 0;
- __virtio32 type = vbr->out_hdr.type & ~cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_OUT);
sg_init_one(&hdr, &vbr->out_hdr, sizeof(vbr->out_hdr));
sgs[num_out++] = &hdr;
+ sg_init_one(&cmd, vbr->sreq.cmd, vbr->sreq.cmd_len);
+ sgs[num_out++] = &cmd;
+
+ if (have_data) {
+ if (vbr->out_hdr.type & cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_OUT))
+ sgs[num_out++] = data_sg;
+ else
+ sgs[num_out + num_in++] = data_sg;
+ }
+
+ sg_init_one(&sense, vbr->sense, SCSI_SENSE_BUFFERSIZE);
+ sgs[num_out + num_in++] = &sense;
+ sg_init_one(&inhdr, &vbr->in_hdr, sizeof(vbr->in_hdr));
+ sgs[num_out + num_in++] = &inhdr;
+ sg_init_one(&status, &vbr->status, sizeof(vbr->status));
+ sgs[num_out + num_in++] = &status;
+
+ return virtqueue_add_sgs(vq, sgs, num_out, num_in, vbr, GFP_ATOMIC);
+}
+
+static inline void virtblk_scsi_reques_done(struct request *req)
+{
+ struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
+ struct virtio_blk *vblk = req->q->queuedata;
+ struct scsi_request *sreq = &vbr->sreq;
+
+ sreq->resid_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.residual);
+ sreq->sense_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.sense_len);
+ req->errors = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.errors);
+}
+
+static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long data)
+{
+ struct gendisk *disk = bdev->bd_disk;
+ struct virtio_blk *vblk = disk->private_data;
/*
- * If this is a packet command we need a couple of additional headers.
- * Behind the normal outhdr we put a segment with the scsi command
- * block, and before the normal inhdr we put the sense data and the
- * inhdr with additional status information.
+ * Only allow the generic SCSI ioctls if the host can support it.
*/
- if (type == cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_SCSI_CMD)) {
- sg_init_one(&cmd, vbr->req->cmd, vbr->req->cmd_len);
- sgs[num_out++] = &cmd;
- }
+ if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
+ return -ENOTTY;
+
+ return scsi_cmd_blk_ioctl(bdev, mode, cmd,
+ (void __user *)data);
+}
+#else
+static inline int virtblk_add_req_scsi(struct virtqueue *vq,
+ struct virtblk_req *vbr, struct scatterlist *data_sg,
+ bool have_data)
+{
+ return -EIO;
+}
+static inline void virtblk_scsi_reques_done(struct request *req)
+{
+}
+#define virtblk_ioctl NULL
+#endif /* CONFIG_VIRTIO_BLK_SCSI */
+
+static int virtblk_add_req(struct virtqueue *vq, struct virtblk_req *vbr,
+ struct scatterlist *data_sg, bool have_data)
+{
+ struct scatterlist hdr, status, *sgs[3];
+ unsigned int num_out = 0, num_in = 0;
+
+ sg_init_one(&hdr, &vbr->out_hdr, sizeof(vbr->out_hdr));
+ sgs[num_out++] = &hdr;
if (have_data) {
if (vbr->out_hdr.type & cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_OUT))
@@ -102,14 +164,6 @@ static int __virtblk_add_req(struct virtqueue *vq,
sgs[num_out + num_in++] = data_sg;
}
- if (type == cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_SCSI_CMD)) {
- memcpy(vbr->sense, vbr->req->sense, SCSI_SENSE_BUFFERSIZE);
- sg_init_one(&sense, vbr->sense, SCSI_SENSE_BUFFERSIZE);
- sgs[num_out + num_in++] = &sense;
- sg_init_one(&inhdr, &vbr->in_hdr, sizeof(vbr->in_hdr));
- sgs[num_out + num_in++] = &inhdr;
- }
-
sg_init_one(&status, &vbr->status, sizeof(vbr->status));
sgs[num_out + num_in++] = &status;
@@ -119,15 +173,16 @@ static int __virtblk_add_req(struct virtqueue *vq,
static inline void virtblk_request_done(struct request *req)
{
struct virtblk_req *vbr = blk_mq_rq_to_pdu(req);
- struct virtio_blk *vblk = req->q->queuedata;
int error = virtblk_result(vbr);
- if (req->cmd_type == REQ_TYPE_BLOCK_PC) {
- req->resid_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.residual);
- req->sense_len = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.sense_len);
- req->errors = virtio32_to_cpu(vblk->vdev, vbr->in_hdr.errors);
- } else if (req->cmd_type == REQ_TYPE_DRV_PRIV) {
+ switch (req_op(req)) {
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
+ virtblk_scsi_reques_done(req);
+ break;
+ case REQ_OP_DRV_IN:
req->errors = (error != 0);
+ break;
}
blk_mq_end_request(req, error);
@@ -146,7 +201,9 @@ static void virtblk_done(struct virtqueue *vq)
do {
virtqueue_disable_cb(vq);
while ((vbr = virtqueue_get_buf(vblk->vqs[qid].vq, &len)) != NULL) {
- blk_mq_complete_request(vbr->req, vbr->req->errors);
+ struct request *req = blk_mq_rq_from_pdu(vbr);
+
+ blk_mq_complete_request(req, req->errors);
req_done = true;
}
if (unlikely(virtqueue_is_broken(vq)))
@@ -170,49 +227,50 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
int qid = hctx->queue_num;
int err;
bool notify = false;
+ u32 type;
BUG_ON(req->nr_phys_segments + 2 > vblk->sg_elems);
- vbr->req = req;
- if (req_op(req) == REQ_OP_FLUSH) {
- vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_FLUSH);
- vbr->out_hdr.sector = 0;
- vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
- } else {
- switch (req->cmd_type) {
- case REQ_TYPE_FS:
- vbr->out_hdr.type = 0;
- vbr->out_hdr.sector = cpu_to_virtio64(vblk->vdev, blk_rq_pos(vbr->req));
- vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
- break;
- case REQ_TYPE_BLOCK_PC:
- vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_SCSI_CMD);
- vbr->out_hdr.sector = 0;
- vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
- break;
- case REQ_TYPE_DRV_PRIV:
- vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_GET_ID);
- vbr->out_hdr.sector = 0;
- vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(vbr->req));
- break;
- default:
- /* We don't put anything else in the queue. */
- BUG();
- }
+ switch (req_op(req)) {
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
+ type = 0;
+ break;
+ case REQ_OP_FLUSH:
+ type = VIRTIO_BLK_T_FLUSH;
+ break;
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
+ type = VIRTIO_BLK_T_SCSI_CMD;
+ break;
+ case REQ_OP_DRV_IN:
+ type = VIRTIO_BLK_T_GET_ID;
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return BLK_MQ_RQ_QUEUE_ERROR;
}
+ vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, type);
+ vbr->out_hdr.sector = type ?
+ 0 : cpu_to_virtio64(vblk->vdev, blk_rq_pos(req));
+ vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev, req_get_ioprio(req));
+
blk_mq_start_request(req);
- num = blk_rq_map_sg(hctx->queue, vbr->req, vbr->sg);
+ num = blk_rq_map_sg(hctx->queue, req, vbr->sg);
if (num) {
- if (rq_data_dir(vbr->req) == WRITE)
+ if (rq_data_dir(req) == WRITE)
vbr->out_hdr.type |= cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_OUT);
else
vbr->out_hdr.type |= cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_IN);
}
spin_lock_irqsave(&vblk->vqs[qid].lock, flags);
- err = __virtblk_add_req(vblk->vqs[qid].vq, vbr, vbr->sg, num);
+ if (req_op(req) == REQ_OP_SCSI_IN || req_op(req) == REQ_OP_SCSI_OUT)
+ err = virtblk_add_req_scsi(vblk->vqs[qid].vq, vbr, vbr->sg, num);
+ else
+ err = virtblk_add_req(vblk->vqs[qid].vq, vbr, vbr->sg, num);
if (err) {
virtqueue_kick(vblk->vqs[qid].vq);
blk_mq_stop_hw_queue(hctx);
@@ -242,10 +300,9 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
struct request *req;
int err;
- req = blk_get_request(q, READ, GFP_KERNEL);
+ req = blk_get_request(q, REQ_OP_DRV_IN, GFP_KERNEL);
if (IS_ERR(req))
return PTR_ERR(req);
- req->cmd_type = REQ_TYPE_DRV_PRIV;
err = blk_rq_map_kern(q, req, id_str, VIRTIO_BLK_ID_BYTES, GFP_KERNEL);
if (err)
@@ -257,22 +314,6 @@ out:
return err;
}
-static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long data)
-{
- struct gendisk *disk = bdev->bd_disk;
- struct virtio_blk *vblk = disk->private_data;
-
- /*
- * Only allow the generic SCSI ioctls if the host can support it.
- */
- if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
- return -ENOTTY;
-
- return scsi_cmd_blk_ioctl(bdev, mode, cmd,
- (void __user *)data);
-}
-
/* We provide getgeo only to please some old bootloader/partitioning tools */
static int virtblk_getgeo(struct block_device *bd, struct hd_geometry *geo)
{
@@ -538,6 +579,9 @@ static int virtblk_init_request(void *data, struct request *rq,
struct virtio_blk *vblk = data;
struct virtblk_req *vbr = blk_mq_rq_to_pdu(rq);
+#ifdef CONFIG_VIRTIO_BLK_SCSI
+ vbr->sreq.sense = vbr->sense;
+#endif
sg_init_table(vbr->sg, vblk->sg_elems);
return 0;
}
@@ -821,7 +865,10 @@ static const struct virtio_device_id id_table[] = {
static unsigned int features_legacy[] = {
VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX, VIRTIO_BLK_F_GEOMETRY,
- VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE, VIRTIO_BLK_F_SCSI,
+ VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
+#ifdef CONFIG_VIRTIO_BLK_SCSI
+ VIRTIO_BLK_F_SCSI,
+#endif
VIRTIO_BLK_F_FLUSH, VIRTIO_BLK_F_TOPOLOGY, VIRTIO_BLK_F_CONFIG_WCE,
VIRTIO_BLK_F_MQ,
}
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 265f1a7..5067a0a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -865,7 +865,7 @@ static inline void flush_requests(struct blkfront_ring_info *rinfo)
static inline bool blkif_request_flush_invalid(struct request *req,
struct blkfront_info *info)
{
- return ((req->cmd_type != REQ_TYPE_FS) ||
+ return (blk_rq_is_passthrough(req) ||
((req_op(req) == REQ_OP_FLUSH) &&
!info->feature_flush) ||
((req->cmd_flags & REQ_FUA) &&
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index c4328d9..757dce2 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -468,7 +468,7 @@ static struct request *ace_get_next_request(struct request_queue *q)
struct request *req;
while ((req = blk_peek_request(q)) != NULL) {
- if (req->cmd_type == REQ_TYPE_FS)
+ if (!blk_rq_is_passthrough(req))
break;
blk_start_request(req);
__blk_end_request_all(req, -EIO);
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index e5ab7d9..3cd7856 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -117,7 +117,7 @@ static void zram_revalidate_disk(struct zram *zram)
{
revalidate_disk(zram->disk);
/* revalidate_disk reset the BDI_CAP_STABLE_WRITES so set again */
- zram->disk->queue->backing_dev_info.capabilities |=
+ zram->disk->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
}
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 59cca72..8773964 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -281,8 +281,8 @@
#include <linux/fcntl.h>
#include <linux/blkdev.h>
#include <linux/times.h>
-
#include <linux/uaccess.h>
+#include <scsi/scsi_request.h>
/* used to tell the module to turn on full debugging messages */
static bool debug;
@@ -342,8 +342,8 @@ static void cdrom_sysctl_register(void);
static LIST_HEAD(cdrom_list);
-static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
- struct packet_command *cgc)
+int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
+ struct packet_command *cgc)
{
if (cgc->sense) {
cgc->sense->sense_key = 0x05;
@@ -354,6 +354,7 @@ static int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
cgc->stat = -EIO;
return -EIO;
}
+EXPORT_SYMBOL(cdrom_dummy_generic_packet);
static int cdrom_flush_cache(struct cdrom_device_info *cdi)
{
@@ -371,7 +372,7 @@ static int cdrom_flush_cache(struct cdrom_device_info *cdi)
static int cdrom_get_disc_info(struct cdrom_device_info *cdi,
disc_information *di)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
struct packet_command cgc;
int ret, buflen;
@@ -586,7 +587,7 @@ static int cdrom_mrw_set_lba_space(struct cdrom_device_info *cdi, int space)
int register_cdrom(struct cdrom_device_info *cdi)
{
static char banner_printed;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
int *change_capability = (int *)&cdo->capability; /* hack */
cd_dbg(CD_OPEN, "entering register_cdrom\n");
@@ -610,7 +611,6 @@ int register_cdrom(struct cdrom_device_info *cdi)
ENSURE(reset, CDC_RESET);
ENSURE(generic_packet, CDC_GENERIC_PACKET);
cdi->mc_flags = 0;
- cdo->n_minors = 0;
cdi->options = CDO_USE_FFLAGS;
if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY))
@@ -630,8 +630,7 @@ int register_cdrom(struct cdrom_device_info *cdi)
else
cdi->cdda_method = CDDA_OLD;
- if (!cdo->generic_packet)
- cdo->generic_packet = cdrom_dummy_generic_packet;
+ WARN_ON(!cdo->generic_packet);
cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
mutex_lock(&cdrom_mutex);
@@ -652,7 +651,6 @@ void unregister_cdrom(struct cdrom_device_info *cdi)
if (cdi->exit)
cdi->exit(cdi);
- cdi->ops->n_minors--;
cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
}
@@ -1036,7 +1034,7 @@ static
int open_for_data(struct cdrom_device_info *cdi)
{
int ret;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
tracktype tracks;
cd_dbg(CD_OPEN, "entering open_for_data\n");
/* Check if the driver can report drive status. If it can, we
@@ -1198,8 +1196,8 @@ err:
/* This code is similar to that in open_for_data. The routine is called
whenever an audio play operation is requested.
*/
-static int check_for_audio_disc(struct cdrom_device_info * cdi,
- struct cdrom_device_ops * cdo)
+static int check_for_audio_disc(struct cdrom_device_info *cdi,
+ const struct cdrom_device_ops *cdo)
{
int ret;
tracktype tracks;
@@ -1254,7 +1252,7 @@ static int check_for_audio_disc(struct cdrom_device_info * cdi,
void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
int opened_for_data;
cd_dbg(CD_CLOSE, "entering cdrom_release\n");
@@ -1294,7 +1292,7 @@ static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
struct cdrom_changer_info *buf)
{
struct packet_command cgc;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
int length;
/*
@@ -1643,7 +1641,7 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
int ret;
u_char buf[20];
struct packet_command cgc;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
rpc_state_t rpc_state;
memset(buf, 0, sizeof(buf));
@@ -1791,7 +1789,7 @@ static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
{
unsigned char buf[21], *base;
struct dvd_layer *layer;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
int ret, layer_num = s->physical.layer_num;
if (layer_num >= DVD_LAYERS)
@@ -1842,7 +1840,7 @@ static int dvd_read_copyright(struct cdrom_device_info *cdi, dvd_struct *s,
{
int ret;
u_char buf[8];
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
init_cdrom_command(cgc, buf, sizeof(buf), CGC_DATA_READ);
cgc->cmd[0] = GPCMD_READ_DVD_STRUCTURE;
@@ -1866,7 +1864,7 @@ static int dvd_read_disckey(struct cdrom_device_info *cdi, dvd_struct *s,
{
int ret, size;
u_char *buf;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
size = sizeof(s->disckey.value) + 4;
@@ -1894,7 +1892,7 @@ static int dvd_read_bca(struct cdrom_device_info *cdi, dvd_struct *s,
{
int ret, size = 4 + 188;
u_char *buf;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
buf = kmalloc(size, GFP_KERNEL);
if (!buf)
@@ -1928,7 +1926,7 @@ static int dvd_read_manufact(struct cdrom_device_info *cdi, dvd_struct *s,
{
int ret = 0, size;
u_char *buf;
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
size = sizeof(s->manufact.value) + 4;
@@ -1995,7 +1993,7 @@ int cdrom_mode_sense(struct cdrom_device_info *cdi,
struct packet_command *cgc,
int page_code, int page_control)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
memset(cgc->cmd, 0, sizeof(cgc->cmd));
@@ -2010,7 +2008,7 @@ int cdrom_mode_sense(struct cdrom_device_info *cdi,
int cdrom_mode_select(struct cdrom_device_info *cdi,
struct packet_command *cgc)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
memset(cgc->cmd, 0, sizeof(cgc->cmd));
memset(cgc->buffer, 0, 2);
@@ -2025,7 +2023,7 @@ int cdrom_mode_select(struct cdrom_device_info *cdi,
static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
struct cdrom_subchnl *subchnl, int mcn)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
struct packet_command cgc;
char buffer[32];
int ret;
@@ -2073,7 +2071,7 @@ static int cdrom_read_cd(struct cdrom_device_info *cdi,
struct packet_command *cgc, int lba,
int blocksize, int nblocks)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
memset(&cgc->cmd, 0, sizeof(cgc->cmd));
cgc->cmd[0] = GPCMD_READ_10;
@@ -2093,7 +2091,7 @@ static int cdrom_read_block(struct cdrom_device_info *cdi,
struct packet_command *cgc,
int lba, int nblocks, int format, int blksize)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
memset(&cgc->cmd, 0, sizeof(cgc->cmd));
cgc->cmd[0] = GPCMD_READ_CD;
@@ -2172,6 +2170,7 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
{
struct request_queue *q = cdi->disk->queue;
struct request *rq;
+ struct scsi_request *req;
struct bio *bio;
unsigned int len;
int nr, ret = 0;
@@ -2190,12 +2189,13 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
len = nr * CD_FRAMESIZE_RAW;
- rq = blk_get_request(q, READ, GFP_KERNEL);
+ rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(rq)) {
ret = PTR_ERR(rq);
break;
}
- blk_rq_set_block_pc(rq);
+ req = scsi_req(rq);
+ scsi_req_init(rq);
ret = blk_rq_map_user(q, rq, NULL, ubuf, len, GFP_KERNEL);
if (ret) {
@@ -2203,23 +2203,23 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
break;
}
- rq->cmd[0] = GPCMD_READ_CD;
- rq->cmd[1] = 1 << 2;
- rq->cmd[2] = (lba >> 24) & 0xff;
- rq->cmd[3] = (lba >> 16) & 0xff;
- rq->cmd[4] = (lba >> 8) & 0xff;
- rq->cmd[5] = lba & 0xff;
- rq->cmd[6] = (nr >> 16) & 0xff;
- rq->cmd[7] = (nr >> 8) & 0xff;
- rq->cmd[8] = nr & 0xff;
- rq->cmd[9] = 0xf8;
-
- rq->cmd_len = 12;
+ req->cmd[0] = GPCMD_READ_CD;
+ req->cmd[1] = 1 << 2;
+ req->cmd[2] = (lba >> 24) & 0xff;
+ req->cmd[3] = (lba >> 16) & 0xff;
+ req->cmd[4] = (lba >> 8) & 0xff;
+ req->cmd[5] = lba & 0xff;
+ req->cmd[6] = (nr >> 16) & 0xff;
+ req->cmd[7] = (nr >> 8) & 0xff;
+ req->cmd[8] = nr & 0xff;
+ req->cmd[9] = 0xf8;
+
+ req->cmd_len = 12;
rq->timeout = 60 * HZ;
bio = rq->bio;
if (blk_execute_rq(q, cdi->disk, rq, 0)) {
- struct request_sense *s = rq->sense;
+ struct request_sense *s = req->sense;
ret = -EIO;
cdi->last_sense = s->sense_key;
}
@@ -2764,7 +2764,7 @@ static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi,
*/
static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
struct packet_command cgc;
struct modesel_head mh;
@@ -2790,7 +2790,7 @@ static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
static int cdrom_get_track_info(struct cdrom_device_info *cdi,
__u16 track, __u8 type, track_information *ti)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
struct packet_command cgc;
int ret, buflen;
@@ -3049,7 +3049,7 @@ static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
void __user *arg,
struct packet_command *cgc)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
struct cdrom_msf msf;
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
@@ -3069,7 +3069,7 @@ static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
void __user *arg,
struct packet_command *cgc)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
struct cdrom_blk blk;
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk)))
@@ -3164,7 +3164,7 @@ static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
struct packet_command *cgc,
int cmd)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
cgc->cmd[0] = GPCMD_START_STOP_UNIT;
cgc->cmd[1] = 1;
@@ -3177,7 +3177,7 @@ static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
struct packet_command *cgc,
int cmd)
{
- struct cdrom_device_ops *cdo = cdi->ops;
+ const struct cdrom_device_ops *cdo = cdi->ops;
cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
cgc->cmd[0] = GPCMD_PAUSE_RESUME;
cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index 584bc31..1372763 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -481,7 +481,7 @@ static int gdrom_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
return -EINVAL;
}
-static struct cdrom_device_ops gdrom_ops = {
+static const struct cdrom_device_ops gdrom_ops = {
.open = gdrom_open,
.release = gdrom_release,
.drive_status = gdrom_drivestatus,
@@ -489,9 +489,9 @@ static struct cdrom_device_ops gdrom_ops = {
.get_last_session = gdrom_get_last_session,
.reset = gdrom_hardreset,
.audio_ioctl = gdrom_audio_ioctl,
+ .generic_packet = cdrom_dummy_generic_packet,
.capability = CDC_MULTI_SESSION | CDC_MEDIA_CHANGED |
CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R,
- .n_minors = 1,
};
static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
@@ -659,23 +659,24 @@ static void gdrom_request(struct request_queue *rq)
struct request *req;
while ((req = blk_fetch_request(rq)) != NULL) {
- if (req->cmd_type != REQ_TYPE_FS) {
- printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");
- __blk_end_request_all(req, -EIO);
- continue;
- }
- if (rq_data_dir(req) != READ) {
+ switch (req_op(req)) {
+ case REQ_OP_READ:
+ /*
+ * Add to list of deferred work and then schedule
+ * workqueue.
+ */
+ list_add_tail(&req->queuelist, &gdrom_deferred);
+ schedule_work(&work);
+ break;
+ case REQ_OP_WRITE:
pr_notice("Read only device - write request ignored\n");
__blk_end_request_all(req, -EIO);
- continue;
+ break;
+ default:
+ printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");
+ __blk_end_request_all(req, -EIO);
+ break;
}
-
- /*
- * Add to list of deferred work and then schedule
- * workqueue.
- */
- list_add_tail(&req->queuelist, &gdrom_deferred);
- schedule_work(&work);
}
}
@@ -807,16 +808,20 @@ static int probe_gdrom(struct platform_device *devptr)
if (err)
goto probe_fail_cmdirq_register;
gd.gdrom_rq = blk_init_queue(gdrom_request, &gdrom_lock);
- if (!gd.gdrom_rq)
+ if (!gd.gdrom_rq) {
+ err = -ENOMEM;
goto probe_fail_requestq;
+ }
err = probe_gdrom_setupqueue();
if (err)
goto probe_fail_toc;
gd.toc = kzalloc(sizeof(struct gdromtoc), GFP_KERNEL);
- if (!gd.toc)
+ if (!gd.toc) {
+ err = -ENOMEM;
goto probe_fail_toc;
+ }
add_disk(gd.disk);
return 0;
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 39ea67f..c99a25c 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -10,6 +10,7 @@ menuconfig IDE
tristate "ATA/ATAPI/MFM/RLL support (DEPRECATED)"
depends on HAVE_IDE
depends on BLOCK
+ select BLK_SCSI_REQUEST
---help---
If you say Y here, your kernel will be able to manage ATA/(E)IDE and
ATAPI units. The most common cases are IDE hard drives and ATAPI
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index f90ea22..feb3006 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -92,8 +92,9 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
struct request *rq;
int error;
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = (char *)pc;
if (buf && bufflen) {
@@ -103,9 +104,9 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
goto put_req;
}
- memcpy(rq->cmd, pc->c, 12);
+ memcpy(scsi_req(rq)->cmd, pc->c, 12);
if (drive->media == ide_tape)
- rq->cmd[13] = REQ_IDETAPE_PC1;
+ scsi_req(rq)->cmd[13] = REQ_IDETAPE_PC1;
error = blk_execute_rq(drive->queue, disk, rq, 0);
put_req:
blk_put_request(rq);
@@ -171,7 +172,8 @@ EXPORT_SYMBOL_GPL(ide_create_request_sense_cmd);
void ide_prep_sense(ide_drive_t *drive, struct request *rq)
{
struct request_sense *sense = &drive->sense_data;
- struct request *sense_rq = &drive->sense_rq;
+ struct request *sense_rq = drive->sense_rq;
+ struct scsi_request *req = scsi_req(sense_rq);
unsigned int cmd_len, sense_len;
int err;
@@ -191,12 +193,13 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
BUG_ON(sense_len > sizeof(*sense));
- if (rq->cmd_type == REQ_TYPE_ATA_SENSE || drive->sense_rq_armed)
+ if (ata_sense_request(rq) || drive->sense_rq_armed)
return;
memset(sense, 0, sizeof(*sense));
blk_rq_init(rq->q, sense_rq);
+ scsi_req_init(sense_rq);
err = blk_rq_map_kern(drive->queue, sense_rq, sense, sense_len,
GFP_NOIO);
@@ -208,13 +211,14 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
}
sense_rq->rq_disk = rq->rq_disk;
- sense_rq->cmd[0] = GPCMD_REQUEST_SENSE;
- sense_rq->cmd[4] = cmd_len;
- sense_rq->cmd_type = REQ_TYPE_ATA_SENSE;
+ sense_rq->cmd_flags = REQ_OP_DRV_IN;
+ ide_req(sense_rq)->type = ATA_PRIV_SENSE;
sense_rq->rq_flags |= RQF_PREEMPT;
+ req->cmd[0] = GPCMD_REQUEST_SENSE;
+ req->cmd[4] = cmd_len;
if (drive->media == ide_tape)
- sense_rq->cmd[13] = REQ_IDETAPE_PC1;
+ req->cmd[13] = REQ_IDETAPE_PC1;
drive->sense_rq_armed = true;
}
@@ -229,12 +233,12 @@ int ide_queue_sense_rq(ide_drive_t *drive, void *special)
return -ENOMEM;
}
- drive->sense_rq.special = special;
+ drive->sense_rq->special = special;
drive->sense_rq_armed = false;
drive->hwif->rq = NULL;
- elv_add_request(drive->queue, &drive->sense_rq, ELEVATOR_INSERT_FRONT);
+ elv_add_request(drive->queue, drive->sense_rq, ELEVATOR_INSERT_FRONT);
return 0;
}
EXPORT_SYMBOL_GPL(ide_queue_sense_rq);
@@ -247,14 +251,14 @@ EXPORT_SYMBOL_GPL(ide_queue_sense_rq);
void ide_retry_pc(ide_drive_t *drive)
{
struct request *failed_rq = drive->hwif->rq;
- struct request *sense_rq = &drive->sense_rq;
+ struct request *sense_rq = drive->sense_rq;
struct ide_atapi_pc *pc = &drive->request_sense_pc;
(void)ide_read_error(drive);
/* init pc from sense_rq */
ide_init_pc(pc);
- memcpy(pc->c, sense_rq->cmd, 12);
+ memcpy(pc->c, scsi_req(sense_rq)->cmd, 12);
if (drive->media == ide_tape)
drive->atapi_flags |= IDE_AFLAG_IGNORE_DSC;
@@ -286,7 +290,7 @@ int ide_cd_expiry(ide_drive_t *drive)
* commands/drives support that. Let ide_timer_expiry keep polling us
* for these.
*/
- switch (rq->cmd[0]) {
+ switch (scsi_req(rq)->cmd[0]) {
case GPCMD_BLANK:
case GPCMD_FORMAT_UNIT:
case GPCMD_RESERVE_RZONE_TRACK:
@@ -297,7 +301,7 @@ int ide_cd_expiry(ide_drive_t *drive)
default:
if (!(rq->rq_flags & RQF_QUIET))
printk(KERN_INFO PFX "cmd 0x%x timed out\n",
- rq->cmd[0]);
+ scsi_req(rq)->cmd[0]);
wait = 0;
break;
}
@@ -307,15 +311,21 @@ EXPORT_SYMBOL_GPL(ide_cd_expiry);
int ide_cd_get_xferlen(struct request *rq)
{
- switch (rq->cmd_type) {
- case REQ_TYPE_FS:
+ switch (req_op(rq)) {
+ default:
return 32768;
- case REQ_TYPE_ATA_SENSE:
- case REQ_TYPE_BLOCK_PC:
- case REQ_TYPE_ATA_PC:
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
return blk_rq_bytes(rq);
- default:
- return 0;
+ case REQ_OP_DRV_IN:
+ case REQ_OP_DRV_OUT:
+ switch (ide_req(rq)->type) {
+ case ATA_PRIV_PC:
+ case ATA_PRIV_SENSE:
+ return blk_rq_bytes(rq);
+ default:
+ return 0;
+ }
}
}
EXPORT_SYMBOL_GPL(ide_cd_get_xferlen);
@@ -374,7 +384,7 @@ int ide_check_ireason(ide_drive_t *drive, struct request *rq, int len,
drive->name, __func__, ireason);
}
- if (dev_is_idecd(drive) && rq->cmd_type == REQ_TYPE_ATA_PC)
+ if (dev_is_idecd(drive) && ata_pc_request(rq))
rq->rq_flags |= RQF_FAILED;
return 1;
@@ -420,7 +430,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
? "write" : "read");
pc->flags |= PC_FLAG_DMA_ERROR;
} else
- rq->resid_len = 0;
+ scsi_req(rq)->resid_len = 0;
debug_log("%s: DMA finished\n", drive->name);
}
@@ -436,7 +446,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
local_irq_enable_in_hardirq();
if (drive->media == ide_tape &&
- (stat & ATA_ERR) && rq->cmd[0] == REQUEST_SENSE)
+ (stat & ATA_ERR) && scsi_req(rq)->cmd[0] == REQUEST_SENSE)
stat &= ~ATA_ERR;
if ((stat & ATA_ERR) || (pc->flags & PC_FLAG_DMA_ERROR)) {
@@ -446,7 +456,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
if (drive->media != ide_tape)
pc->rq->errors++;
- if (rq->cmd[0] == REQUEST_SENSE) {
+ if (scsi_req(rq)->cmd[0] == REQUEST_SENSE) {
printk(KERN_ERR PFX "%s: I/O error in request "
"sense command\n", drive->name);
return ide_do_reset(drive);
@@ -477,12 +487,12 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
if (uptodate == 0)
drive->failed_pc = NULL;
- if (rq->cmd_type == REQ_TYPE_DRV_PRIV) {
+ if (ata_misc_request(rq)) {
rq->errors = 0;
error = 0;
} else {
- if (rq->cmd_type != REQ_TYPE_FS && uptodate <= 0) {
+ if (blk_rq_is_passthrough(rq) && uptodate <= 0) {
if (rq->errors == 0)
rq->errors = -EIO;
}
@@ -512,7 +522,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
ide_pio_bytes(drive, cmd, write, done);
/* Update transferred byte count */
- rq->resid_len -= done;
+ scsi_req(rq)->resid_len -= done;
bcount -= done;
@@ -520,7 +530,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
ide_pad_transfer(drive, write, bcount);
debug_log("[cmd %x] transferred %d bytes, padded %d bytes, resid: %u\n",
- rq->cmd[0], done, bcount, rq->resid_len);
+ rq->cmd[0], done, bcount, scsi_req(rq)->resid_len);
/* And set the interrupt handler again */
ide_set_handler(drive, ide_pc_intr, timeout);
@@ -603,7 +613,7 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
if (dev_is_idecd(drive)) {
/* ATAPI commands get padded out to 12 bytes minimum */
- cmd_len = COMMAND_SIZE(rq->cmd[0]);
+ cmd_len = COMMAND_SIZE(scsi_req(rq)->cmd[0]);
if (cmd_len < ATAPI_MIN_CDB_BYTES)
cmd_len = ATAPI_MIN_CDB_BYTES;
@@ -650,7 +660,7 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
/* Send the actual packet */
if ((drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) == 0)
- hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len);
+ hwif->tp_ops->output_data(drive, NULL, scsi_req(rq)->cmd, cmd_len);
/* Begin DMA, if necessary */
if (dev_is_idecd(drive)) {
@@ -695,7 +705,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_cmd *cmd)
bytes, 63 * 1024));
/* We haven't transferred any data yet */
- rq->resid_len = bcount;
+ scsi_req(rq)->resid_len = bcount;
if (pc->flags & PC_FLAG_DMA_ERROR) {
pc->flags &= ~PC_FLAG_DMA_ERROR;
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 9cbd217..aef0051 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -121,7 +121,7 @@ static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
* don't log START_STOP unit with LoEj set, since we cannot
* reliably check if drive can auto-close
*/
- if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
+ if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
break;
log = 1;
break;
@@ -163,7 +163,7 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
* toc has not been recorded yet, it will fail with 05/24/00 (which is a
* confusing error)
*/
- if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
+ if (failed_command && scsi_req(failed_command)->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
if (sense->sense_key == 0x05 && sense->asc == 0x24)
return;
@@ -176,7 +176,7 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
if (!sense->valid)
break;
if (failed_command == NULL ||
- failed_command->cmd_type != REQ_TYPE_FS)
+ blk_rq_is_passthrough(failed_command))
break;
sector = (sense->information[0] << 24) |
(sense->information[1] << 16) |
@@ -210,7 +210,7 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
{
/*
- * For REQ_TYPE_ATA_SENSE, "rq->special" points to the original
+ * For ATA_PRIV_SENSE, "rq->special" points to the original
* failed request. Also, the sense data should be read
* directly from rq which might be different from the original
* sense buffer if it got copied during mapping.
@@ -219,15 +219,12 @@ static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
void *sense = bio_data(rq->bio);
if (failed) {
- if (failed->sense) {
- /*
- * Sense is always read into drive->sense_data.
- * Copy back if the failed request has its
- * sense pointer set.
- */
- memcpy(failed->sense, sense, 18);
- failed->sense_len = rq->sense_len;
- }
+ /*
+ * Sense is always read into drive->sense_data, copy back to the
+ * original request.
+ */
+ memcpy(scsi_req(failed)->sense, sense, 18);
+ scsi_req(failed)->sense_len = scsi_req(rq)->sense_len;
cdrom_analyze_sense_data(drive, failed);
if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
@@ -285,7 +282,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
"stat 0x%x",
rq->cmd[0], rq->cmd_type, err, stat);
- if (rq->cmd_type == REQ_TYPE_ATA_SENSE) {
+ if (ata_sense_request(rq)) {
/*
* We got an error trying to get sense info from the drive
* (probably while trying to recover from a former error).
@@ -296,7 +293,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
}
/* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC && !rq->errors)
+ if (blk_rq_is_scsi(rq) && !rq->errors)
rq->errors = SAM_STAT_CHECK_CONDITION;
if (blk_noretry_request(rq))
@@ -304,13 +301,13 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
switch (sense_key) {
case NOT_READY:
- if (rq->cmd_type == REQ_TYPE_FS && rq_data_dir(rq) == WRITE) {
+ if (req_op(rq) == REQ_OP_WRITE) {
if (ide_cd_breathe(drive, rq))
return 1;
} else {
cdrom_saw_media_change(drive);
- if (rq->cmd_type == REQ_TYPE_FS &&
+ if (!blk_rq_is_passthrough(rq) &&
!(rq->rq_flags & RQF_QUIET))
printk(KERN_ERR PFX "%s: tray open\n",
drive->name);
@@ -320,7 +317,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
case UNIT_ATTENTION:
cdrom_saw_media_change(drive);
- if (rq->cmd_type != REQ_TYPE_FS)
+ if (blk_rq_is_passthrough(rq))
return 0;
/*
@@ -338,7 +335,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
*
* cdrom_log_sense() knows this!
*/
- if (rq->cmd[0] == GPCMD_START_STOP_UNIT)
+ if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT)
break;
/* fall-through */
case DATA_PROTECT:
@@ -368,7 +365,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
do_end_request = 1;
break;
default:
- if (rq->cmd_type != REQ_TYPE_FS)
+ if (blk_rq_is_passthrough(rq))
break;
if (err & ~ATA_ABORTED) {
/* go to the default handler for other errors */
@@ -379,7 +376,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
do_end_request = 1;
}
- if (rq->cmd_type != REQ_TYPE_FS) {
+ if (blk_rq_is_passthrough(rq)) {
rq->rq_flags |= RQF_FAILED;
do_end_request = 1;
}
@@ -414,7 +411,7 @@ static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
* Some of the trailing request sense fields are optional,
* and some drives don't send them. Sigh.
*/
- if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
+ if (scsi_req(rq)->cmd[0] == GPCMD_REQUEST_SENSE &&
cmd->nleft > 0 && cmd->nleft <= 5)
cmd->nleft = 0;
}
@@ -425,12 +422,8 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
req_flags_t rq_flags)
{
struct cdrom_info *info = drive->driver_data;
- struct request_sense local_sense;
int retries = 10;
- req_flags_t flags = 0;
-
- if (!sense)
- sense = &local_sense;
+ bool failed;
ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
"rq_flags: 0x%x",
@@ -440,12 +433,13 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
do {
struct request *rq;
int error;
+ bool delay = false;
- rq = blk_get_request(drive->queue, write, __GFP_RECLAIM);
-
- memcpy(rq->cmd, cmd, BLK_MAX_CDB);
- rq->cmd_type = REQ_TYPE_ATA_PC;
- rq->sense = sense;
+ rq = blk_get_request(drive->queue,
+ write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
+ ide_req(rq)->type = ATA_PRIV_PC;
rq->rq_flags |= rq_flags;
rq->timeout = timeout;
if (buffer) {
@@ -460,21 +454,21 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
error = blk_execute_rq(drive->queue, info->disk, rq, 0);
if (buffer)
- *bufflen = rq->resid_len;
-
- flags = rq->rq_flags;
- blk_put_request(rq);
+ *bufflen = scsi_req(rq)->resid_len;
+ if (sense)
+ memcpy(sense, scsi_req(rq)->sense, sizeof(*sense));
/*
* FIXME: we should probably abort/retry or something in case of
* failure.
*/
- if (flags & RQF_FAILED) {
+ failed = (rq->rq_flags & RQF_FAILED) != 0;
+ if (failed) {
/*
* The request failed. Retry if it was due to a unit
* attention status (usually means media was changed).
*/
- struct request_sense *reqbuf = sense;
+ struct request_sense *reqbuf = scsi_req(rq)->sense;
if (reqbuf->sense_key == UNIT_ATTENTION)
cdrom_saw_media_change(drive);
@@ -485,19 +479,20 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
* a disk. Retry, but wait a little to give
* the drive time to complete the load.
*/
- ssleep(2);
+ delay = true;
} else {
/* otherwise, don't retry */
retries = 0;
}
--retries;
}
-
- /* end of retry loop */
- } while ((flags & RQF_FAILED) && retries >= 0);
+ blk_put_request(rq);
+ if (delay)
+ ssleep(2);
+ } while (failed && retries >= 0);
/* return an error if the command failed */
- return (flags & RQF_FAILED) ? -EIO : 0;
+ return failed ? -EIO : 0;
}
/*
@@ -526,7 +521,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
ide_expiry_t *expiry = NULL;
int dma_error = 0, dma, thislen, uptodate = 0;
int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
- int sense = (rq->cmd_type == REQ_TYPE_ATA_SENSE);
+ int sense = ata_sense_request(rq);
unsigned int timeout;
u16 len;
u8 ireason, stat;
@@ -569,7 +564,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
ide_read_bcount_and_ireason(drive, &len, &ireason);
- thislen = (rq->cmd_type == REQ_TYPE_FS) ? len : cmd->nleft;
+ thislen = !blk_rq_is_passthrough(rq) ? len : cmd->nleft;
if (thislen > len)
thislen = len;
@@ -578,7 +573,8 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
/* If DRQ is clear, the command has completed. */
if ((stat & ATA_DRQ) == 0) {
- if (rq->cmd_type == REQ_TYPE_FS) {
+ switch (req_op(rq)) {
+ default:
/*
* If we're not done reading/writing, complain.
* Otherwise, complete the command normally.
@@ -592,7 +588,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
rq->rq_flags |= RQF_FAILED;
uptodate = 0;
}
- } else if (rq->cmd_type != REQ_TYPE_BLOCK_PC) {
+ goto out_end;
+ case REQ_OP_DRV_IN:
+ case REQ_OP_DRV_OUT:
ide_cd_request_sense_fixup(drive, cmd);
uptodate = cmd->nleft ? 0 : 1;
@@ -608,8 +606,11 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
if (!uptodate)
rq->rq_flags |= RQF_FAILED;
+ goto out_end;
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
+ goto out_end;
}
- goto out_end;
}
rc = ide_check_ireason(drive, rq, len, ireason, write);
@@ -636,12 +637,12 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
len -= blen;
if (sense && write == 0)
- rq->sense_len += blen;
+ scsi_req(rq)->sense_len += blen;
}
/* pad, if necessary */
if (len > 0) {
- if (rq->cmd_type != REQ_TYPE_FS || write == 0)
+ if (blk_rq_is_passthrough(rq) || write == 0)
ide_pad_transfer(drive, write, len);
else {
printk(KERN_ERR PFX "%s: confused, missing data\n",
@@ -650,12 +651,18 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
}
}
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
+ switch (req_op(rq)) {
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
timeout = rq->timeout;
- } else {
+ break;
+ case REQ_OP_DRV_IN:
+ case REQ_OP_DRV_OUT:
+ expiry = ide_cd_expiry;
+ /*FALLTHRU*/
+ default:
timeout = ATAPI_WAIT_PC;
- if (rq->cmd_type != REQ_TYPE_FS)
- expiry = ide_cd_expiry;
+ break;
}
hwif->expiry = expiry;
@@ -663,15 +670,15 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
return ide_started;
out_end:
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC && rc == 0) {
- rq->resid_len = 0;
+ if (blk_rq_is_scsi(rq) && rc == 0) {
+ scsi_req(rq)->resid_len = 0;
blk_end_request_all(rq, 0);
hwif->rq = NULL;
} else {
if (sense && uptodate)
ide_cd_complete_failed_rq(drive, rq);
- if (rq->cmd_type == REQ_TYPE_FS) {
+ if (!blk_rq_is_passthrough(rq)) {
if (cmd->nleft == 0)
uptodate = 1;
} else {
@@ -684,10 +691,10 @@ out_end:
return ide_stopped;
/* make sure it's fully ended */
- if (rq->cmd_type != REQ_TYPE_FS) {
- rq->resid_len -= cmd->nbytes - cmd->nleft;
+ if (blk_rq_is_passthrough(rq)) {
+ scsi_req(rq)->resid_len -= cmd->nbytes - cmd->nleft;
if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
- rq->resid_len += cmd->last_xfer_len;
+ scsi_req(rq)->resid_len += cmd->last_xfer_len;
}
ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq));
@@ -744,7 +751,7 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
rq->cmd[0], rq->cmd_type);
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
+ if (blk_rq_is_scsi(rq))
rq->rq_flags |= RQF_QUIET;
else
rq->rq_flags &= ~RQF_FAILED;
@@ -786,25 +793,31 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
if (drive->debug_mask & IDE_DBG_RQ)
blk_dump_rq_flags(rq, "ide_cd_do_request");
- switch (rq->cmd_type) {
- case REQ_TYPE_FS:
+ switch (req_op(rq)) {
+ default:
if (cdrom_start_rw(drive, rq) == ide_stopped)
goto out_end;
break;
- case REQ_TYPE_ATA_SENSE:
- case REQ_TYPE_BLOCK_PC:
- case REQ_TYPE_ATA_PC:
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
+ handle_pc:
if (!rq->timeout)
rq->timeout = ATAPI_WAIT_PC;
-
cdrom_do_block_pc(drive, rq);
break;
- case REQ_TYPE_DRV_PRIV:
- /* right now this can only be a reset... */
- uptodate = 1;
- goto out_end;
- default:
- BUG();
+ case REQ_OP_DRV_IN:
+ case REQ_OP_DRV_OUT:
+ switch (ide_req(rq)->type) {
+ case ATA_PRIV_MISC:
+ /* right now this can only be a reset... */
+ uptodate = 1;
+ goto out_end;
+ case ATA_PRIV_SENSE:
+ case ATA_PRIV_PC:
+ goto handle_pc;
+ default:
+ BUG();
+ }
}
/* prepare sense request for this command */
@@ -817,7 +830,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
cmd.rq = rq;
- if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
+ if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
}
@@ -1166,7 +1179,7 @@ void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
-static struct cdrom_device_ops ide_cdrom_dops = {
+static const struct cdrom_device_ops ide_cdrom_dops = {
.open = ide_cdrom_open_real,
.release = ide_cdrom_release_real,
.drive_status = ide_cdrom_drive_status,
@@ -1312,28 +1325,29 @@ static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
int hard_sect = queue_logical_block_size(q);
long block = (long)blk_rq_pos(rq) / (hard_sect >> 9);
unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9);
+ struct scsi_request *req = scsi_req(rq);
- memset(rq->cmd, 0, BLK_MAX_CDB);
+ memset(req->cmd, 0, BLK_MAX_CDB);
if (rq_data_dir(rq) == READ)
- rq->cmd[0] = GPCMD_READ_10;
+ req->cmd[0] = GPCMD_READ_10;
else
- rq->cmd[0] = GPCMD_WRITE_10;
+ req->cmd[0] = GPCMD_WRITE_10;
/*
* fill in lba
*/
- rq->cmd[2] = (block >> 24) & 0xff;
- rq->cmd[3] = (block >> 16) & 0xff;
- rq->cmd[4] = (block >> 8) & 0xff;
- rq->cmd[5] = block & 0xff;
+ req->cmd[2] = (block >> 24) & 0xff;
+ req->cmd[3] = (block >> 16) & 0xff;
+ req->cmd[4] = (block >> 8) & 0xff;
+ req->cmd[5] = block & 0xff;
/*
* and transfer length
*/
- rq->cmd[7] = (blocks >> 8) & 0xff;
- rq->cmd[8] = blocks & 0xff;
- rq->cmd_len = 10;
+ req->cmd[7] = (blocks >> 8) & 0xff;
+ req->cmd[8] = blocks & 0xff;
+ req->cmd_len = 10;
return BLKPREP_OK;
}
@@ -1343,7 +1357,7 @@ static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
*/
static int ide_cdrom_prep_pc(struct request *rq)
{
- u8 *c = rq->cmd;
+ u8 *c = scsi_req(rq)->cmd;
/* transform 6-byte read/write commands to the 10-byte version */
if (c[0] == READ_6 || c[0] == WRITE_6) {
@@ -1354,7 +1368,7 @@ static int ide_cdrom_prep_pc(struct request *rq)
c[2] = 0;
c[1] &= 0xe0;
c[0] += (READ_10 - READ_6);
- rq->cmd_len = 10;
+ scsi_req(rq)->cmd_len = 10;
return BLKPREP_OK;
}
@@ -1373,9 +1387,9 @@ static int ide_cdrom_prep_pc(struct request *rq)
static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq)
{
- if (rq->cmd_type == REQ_TYPE_FS)
+ if (!blk_rq_is_passthrough(rq))
return ide_cdrom_prep_fs(q, rq);
- else if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
+ else if (blk_rq_is_scsi(rq))
return ide_cdrom_prep_pc(rq);
return 0;
diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
index f085e3a..9fcefbc 100644
--- a/drivers/ide/ide-cd_ioctl.c
+++ b/drivers/ide/ide-cd_ioctl.c
@@ -303,8 +303,9 @@ int ide_cdrom_reset(struct cdrom_device_info *cdi)
struct request *rq;
int ret;
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_MISC;
rq->rq_flags = RQF_QUIET;
ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
blk_put_request(rq);
diff --git a/drivers/ide/ide-cd_verbose.c b/drivers/ide/ide-cd_verbose.c
index f079ca2..58a6feb 100644
--- a/drivers/ide/ide-cd_verbose.c
+++ b/drivers/ide/ide-cd_verbose.c
@@ -315,12 +315,12 @@ void ide_cd_log_error(const char *name, struct request *failed_command,
while (hi > lo) {
mid = (lo + hi) / 2;
if (packet_command_texts[mid].packet_command ==
- failed_command->cmd[0]) {
+ scsi_req(failed_command)->cmd[0]) {
s = packet_command_texts[mid].text;
break;
}
if (packet_command_texts[mid].packet_command >
- failed_command->cmd[0])
+ scsi_req(failed_command)->cmd[0])
hi = mid;
else
lo = mid + 1;
@@ -329,7 +329,7 @@ void ide_cd_log_error(const char *name, struct request *failed_command,
printk(KERN_ERR " The failed \"%s\" packet command "
"was: \n \"", s);
for (i = 0; i < BLK_MAX_CDB; i++)
- printk(KERN_CONT "%02x ", failed_command->cmd[i]);
+ printk(KERN_CONT "%02x ", scsi_req(failed_command)->cmd[i]);
printk(KERN_CONT "\"\n");
}
diff --git a/drivers/ide/ide-devsets.c b/drivers/ide/ide-devsets.c
index 0dd43b4..a45dda5 100644
--- a/drivers/ide/ide-devsets.c
+++ b/drivers/ide/ide-devsets.c
@@ -165,11 +165,12 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
if (!(setting->flags & DS_SYNC))
return setting->set(drive, arg);
- rq = blk_get_request(q, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
- rq->cmd_len = 5;
- rq->cmd[0] = REQ_DEVSET_EXEC;
- *(int *)&rq->cmd[1] = arg;
+ rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_MISC;
+ scsi_req(rq)->cmd_len = 5;
+ scsi_req(rq)->cmd[0] = REQ_DEVSET_EXEC;
+ *(int *)&scsi_req(rq)->cmd[1] = arg;
rq->special = setting->set;
if (blk_execute_rq(q, NULL, rq, 0))
@@ -183,7 +184,7 @@ ide_startstop_t ide_do_devset(ide_drive_t *drive, struct request *rq)
{
int err, (*setfunc)(ide_drive_t *, int) = rq->special;
- err = setfunc(drive, *(int *)&rq->cmd[1]);
+ err = setfunc(drive, *(int *)&scsi_req(rq)->cmd[1]);
if (err)
rq->errors = err;
ide_complete_rq(drive, err, blk_rq_bytes(rq));
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 5ceace5..1861597 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -184,7 +184,7 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
ide_hwif_t *hwif = drive->hwif;
BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
- BUG_ON(rq->cmd_type != REQ_TYPE_FS);
+ BUG_ON(blk_rq_is_passthrough(rq));
ledtrig_disk_activity();
@@ -452,8 +452,9 @@ static int idedisk_prep_fn(struct request_queue *q, struct request *rq)
cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
cmd->tf_flags = IDE_TFLAG_DYN;
cmd->protocol = ATA_PROT_NODATA;
-
- rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+ rq->cmd_flags &= ~REQ_OP_MASK;
+ rq->cmd_flags |= REQ_OP_DRV_OUT;
+ ide_req(rq)->type = ATA_PRIV_TASKFILE;
rq->special = cmd;
cmd->rq = rq;
@@ -477,8 +478,9 @@ static int set_multcount(ide_drive_t *drive, int arg)
if (drive->special_flags & IDE_SFLAG_SET_MULTMODE)
return -EBUSY;
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_TASKFILE;
drive->mult_req = arg;
drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
diff --git a/drivers/ide/ide-eh.c b/drivers/ide/ide-eh.c
index d6da011..cf3af68 100644
--- a/drivers/ide/ide-eh.c
+++ b/drivers/ide/ide-eh.c
@@ -123,8 +123,8 @@ ide_startstop_t ide_error(ide_drive_t *drive, const char *msg, u8 stat)
return ide_stopped;
/* retry only "normal" I/O: */
- if (rq->cmd_type != REQ_TYPE_FS) {
- if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ if (blk_rq_is_passthrough(rq)) {
+ if (ata_taskfile_request(rq)) {
struct ide_cmd *cmd = rq->special;
if (cmd)
@@ -147,8 +147,8 @@ static inline void ide_complete_drive_reset(ide_drive_t *drive, int err)
{
struct request *rq = drive->hwif->rq;
- if (rq && rq->cmd_type == REQ_TYPE_DRV_PRIV &&
- rq->cmd[0] == REQ_DRIVE_RESET) {
+ if (rq && ata_misc_request(rq) &&
+ scsi_req(rq)->cmd[0] == REQ_DRIVE_RESET) {
if (err <= 0 && rq->errors == 0)
rq->errors = -EIO;
ide_complete_rq(drive, err ? err : 0, blk_rq_bytes(rq));
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index f079d8d..a69e801 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -72,7 +72,7 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc)
drive->failed_pc = NULL;
if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
- rq->cmd_type == REQ_TYPE_BLOCK_PC)
+ (req_op(rq) == REQ_OP_SCSI_IN || req_op(rq) == REQ_OP_SCSI_OUT))
uptodate = 1; /* FIXME */
else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
@@ -97,7 +97,7 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc)
"Aborting request!\n");
}
- if (rq->cmd_type == REQ_TYPE_DRV_PRIV)
+ if (ata_misc_request(rq))
rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
return uptodate;
@@ -203,7 +203,7 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,
put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
- memcpy(rq->cmd, pc->c, 12);
+ memcpy(scsi_req(rq)->cmd, pc->c, 12);
pc->rq = rq;
if (cmd == WRITE)
@@ -216,7 +216,7 @@ static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
struct ide_atapi_pc *pc, struct request *rq)
{
ide_init_pc(pc);
- memcpy(pc->c, rq->cmd, sizeof(pc->c));
+ memcpy(pc->c, scsi_req(rq)->cmd, sizeof(pc->c));
pc->rq = rq;
if (blk_rq_bytes(rq)) {
pc->flags |= PC_FLAG_DMA_OK;
@@ -246,7 +246,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
} else
printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
- if (rq->cmd_type == REQ_TYPE_DRV_PRIV) {
+ if (ata_misc_request(rq)) {
rq->errors = 0;
ide_complete_rq(drive, 0, blk_rq_bytes(rq));
return ide_stopped;
@@ -254,8 +254,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
goto out_end;
}
- switch (rq->cmd_type) {
- case REQ_TYPE_FS:
+ switch (req_op(rq)) {
+ default:
if (((long)blk_rq_pos(rq) % floppy->bs_factor) ||
(blk_rq_sectors(rq) % floppy->bs_factor)) {
printk(KERN_ERR PFX "%s: unsupported r/w rq size\n",
@@ -265,16 +265,21 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
pc = &floppy->queued_pc;
idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
break;
- case REQ_TYPE_DRV_PRIV:
- case REQ_TYPE_ATA_SENSE:
- pc = (struct ide_atapi_pc *)rq->special;
- break;
- case REQ_TYPE_BLOCK_PC:
+ case REQ_OP_SCSI_IN:
+ case REQ_OP_SCSI_OUT:
pc = &floppy->queued_pc;
idefloppy_blockpc_cmd(floppy, pc, rq);
break;
- default:
- BUG();
+ case REQ_OP_DRV_IN:
+ case REQ_OP_DRV_OUT:
+ switch (ide_req(rq)->type) {
+ case ATA_PRIV_MISC:
+ case ATA_PRIV_SENSE:
+ pc = (struct ide_atapi_pc *)rq->special;
+ break;
+ default:
+ BUG();
+ }
}
ide_prep_sense(drive, rq);
@@ -286,7 +291,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
cmd.rq = rq;
- if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
+ if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
}
@@ -296,7 +301,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
return ide_floppy_issue_pc(drive, &cmd, pc);
out_end:
drive->failed_pc = NULL;
- if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0)
+ if (blk_rq_is_passthrough(rq) && rq->errors == 0)
rq->errors = -EIO;
ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
return ide_stopped;
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 201e43f..043b1fb9 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -102,7 +102,7 @@ void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err)
drive->dev_flags |= IDE_DFLAG_PARKED;
}
- if (rq && rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ if (rq && ata_taskfile_request(rq)) {
struct ide_cmd *orig_cmd = rq->special;
if (cmd->tf_flags & IDE_TFLAG_DYN)
@@ -135,7 +135,7 @@ EXPORT_SYMBOL(ide_complete_rq);
void ide_kill_rq(ide_drive_t *drive, struct request *rq)
{
- u8 drv_req = (rq->cmd_type == REQ_TYPE_DRV_PRIV) && rq->rq_disk;
+ u8 drv_req = ata_misc_request(rq) && rq->rq_disk;
u8 media = drive->media;
drive->failed_pc = NULL;
@@ -145,7 +145,7 @@ void ide_kill_rq(ide_drive_t *drive, struct request *rq)
} else {
if (media == ide_tape)
rq->errors = IDE_DRV_ERROR_GENERAL;
- else if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0)
+ else if (blk_rq_is_passthrough(rq) && rq->errors == 0)
rq->errors = -EIO;
}
@@ -279,7 +279,7 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
{
- u8 cmd = rq->cmd[0];
+ u8 cmd = scsi_req(rq)->cmd[0];
switch (cmd) {
case REQ_PARK_HEADS:
@@ -340,7 +340,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
if (drive->current_speed == 0xff)
ide_config_drive_speed(drive, drive->desired_speed);
- if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+ if (ata_taskfile_request(rq))
return execute_drive_cmd(drive, rq);
else if (ata_pm_request(rq)) {
struct ide_pm_state *pm = rq->special;
@@ -353,7 +353,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
pm->pm_step == IDE_PM_COMPLETED)
ide_complete_pm_rq(drive, rq);
return startstop;
- } else if (!rq->rq_disk && rq->cmd_type == REQ_TYPE_DRV_PRIV)
+ } else if (!rq->rq_disk && ata_misc_request(rq))
/*
* TODO: Once all ULDs have been modified to
* check for specific op codes rather than
@@ -545,6 +545,7 @@ repeat:
goto plug_device;
}
+ scsi_req(rq)->resid_len = blk_rq_bytes(rq);
hwif->rq = rq;
spin_unlock_irq(&hwif->lock);
diff --git a/drivers/ide/ide-ioctls.c b/drivers/ide/ide-ioctls.c
index d05db24..248a3e0 100644
--- a/drivers/ide/ide-ioctls.c
+++ b/drivers/ide/ide-ioctls.c
@@ -125,8 +125,9 @@ static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
if (NULL == (void *) arg) {
struct request *rq;
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_TASKFILE;
err = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
@@ -221,10 +222,11 @@ static int generic_drive_reset(ide_drive_t *drive)
struct request *rq;
int ret = 0;
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
- rq->cmd_len = 1;
- rq->cmd[0] = REQ_DRIVE_RESET;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_MISC;
+ scsi_req(rq)->cmd_len = 1;
+ scsi_req(rq)->cmd[0] = REQ_DRIVE_RESET;
if (blk_execute_rq(drive->queue, NULL, rq, 1))
ret = rq->errors;
blk_put_request(rq);
diff --git a/drivers/ide/ide-park.c b/drivers/ide/ide-park.c
index 2d7dca5..101aed9 100644
--- a/drivers/ide/ide-park.c
+++ b/drivers/ide/ide-park.c
@@ -31,10 +31,11 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
}
spin_unlock_irq(&hwif->lock);
- rq = blk_get_request(q, READ, __GFP_RECLAIM);
- rq->cmd[0] = REQ_PARK_HEADS;
- rq->cmd_len = 1;
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
+ rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ scsi_req(rq)->cmd[0] = REQ_PARK_HEADS;
+ scsi_req(rq)->cmd_len = 1;
+ ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = &timeout;
rc = blk_execute_rq(q, NULL, rq, 1);
blk_put_request(rq);
@@ -45,13 +46,14 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
* Make sure that *some* command is sent to the drive after the
* timeout has expired, so power management will be reenabled.
*/
- rq = blk_get_request(q, READ, GFP_NOWAIT);
+ rq = blk_get_request(q, REQ_OP_DRV_IN, GFP_NOWAIT);
+ scsi_req_init(rq);
if (IS_ERR(rq))
goto out;
- rq->cmd[0] = REQ_UNPARK_HEADS;
- rq->cmd_len = 1;
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
+ scsi_req(rq)->cmd[0] = REQ_UNPARK_HEADS;
+ scsi_req(rq)->cmd_len = 1;
+ ide_req(rq)->type = ATA_PRIV_MISC;
elv_add_request(q, rq, ELEVATOR_INSERT_FRONT);
out:
@@ -64,7 +66,7 @@ ide_startstop_t ide_do_park_unpark(ide_drive_t *drive, struct request *rq)
struct ide_taskfile *tf = &cmd.tf;
memset(&cmd, 0, sizeof(cmd));
- if (rq->cmd[0] == REQ_PARK_HEADS) {
+ if (scsi_req(rq)->cmd[0] == REQ_PARK_HEADS) {
drive->sleep = *(unsigned long *)rq->special;
drive->dev_flags |= IDE_DFLAG_SLEEPING;
tf->command = ATA_CMD_IDLEIMMEDIATE;
diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c
index a015acd..ec951be 100644
--- a/drivers/ide/ide-pm.c
+++ b/drivers/ide/ide-pm.c
@@ -18,8 +18,9 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg)
}
memset(&rqpm, 0, sizeof(rqpm));
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_ATA_PM_SUSPEND;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_PM_SUSPEND;
rq->special = &rqpm;
rqpm.pm_step = IDE_PM_START_SUSPEND;
if (mesg.event == PM_EVENT_PRETHAW)
@@ -88,8 +89,9 @@ int generic_ide_resume(struct device *dev)
}
memset(&rqpm, 0, sizeof(rqpm));
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_ATA_PM_RESUME;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_PM_RESUME;
rq->rq_flags |= RQF_PREEMPT;
rq->special = &rqpm;
rqpm.pm_step = IDE_PM_START_RESUME;
@@ -221,10 +223,10 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
#ifdef DEBUG_PM
printk("%s: completing PM request, %s\n", drive->name,
- (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND) ? "suspend" : "resume");
+ (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND) ? "suspend" : "resume");
#endif
spin_lock_irqsave(q->queue_lock, flags);
- if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND)
+ if (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND)
blk_stop_queue(q);
else
drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
@@ -240,11 +242,13 @@ void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct ide_pm_state *pm = rq->special;
- if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND &&
+ if (blk_rq_is_private(rq) &&
+ ide_req(rq)->type == ATA_PRIV_PM_SUSPEND &&
pm->pm_step == IDE_PM_START_SUSPEND)
/* Mark drive blocked when starting the suspend sequence. */
drive->dev_flags |= IDE_DFLAG_BLOCKED;
- else if (rq->cmd_type == REQ_TYPE_ATA_PM_RESUME &&
+ else if (blk_rq_is_private(rq) &&
+ ide_req(rq)->type == ATA_PRIV_PM_RESUME &&
pm->pm_step == IDE_PM_START_RESUME) {
/*
* The first thing we do on wakeup is to wait for BSY bit to
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 330e319..a74ae8df 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -741,6 +741,14 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
}
}
+static int ide_init_rq(struct request_queue *q, struct request *rq, gfp_t gfp)
+{
+ struct ide_request *req = blk_mq_rq_to_pdu(rq);
+
+ req->sreq.sense = req->sense;
+ return 0;
+}
+
/*
* init request queue
*/
@@ -758,11 +766,18 @@ static int ide_init_queue(ide_drive_t *drive)
* limits and LBA48 we could raise it but as yet
* do not.
*/
-
- q = blk_init_queue_node(do_ide_request, NULL, hwif_to_node(hwif));
+ q = blk_alloc_queue_node(GFP_KERNEL, hwif_to_node(hwif));
if (!q)
return 1;
+ q->request_fn = do_ide_request;
+ q->init_rq_fn = ide_init_rq;
+ q->cmd_size = sizeof(struct ide_request);
+ if (blk_init_allocated_queue(q) < 0) {
+ blk_cleanup_queue(q);
+ return 1;
+ }
+
q->queuedata = drive;
blk_queue_segment_boundary(q, 0xffff);
@@ -1131,10 +1146,12 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif)
ide_port_for_each_dev(i, drive, hwif) {
u8 j = (hwif->index * MAX_DRIVES) + i;
u16 *saved_id = drive->id;
+ struct request *saved_sense_rq = drive->sense_rq;
memset(drive, 0, sizeof(*drive));
memset(saved_id, 0, SECTOR_SIZE);
drive->id = saved_id;
+ drive->sense_rq = saved_sense_rq;
drive->media = ide_disk;
drive->select = (i << 4) | ATA_DEVICE_OBS;
@@ -1241,6 +1258,7 @@ static void ide_port_free_devices(ide_hwif_t *hwif)
int i;
ide_port_for_each_dev(i, drive, hwif) {
+ kfree(drive->sense_rq);
kfree(drive->id);
kfree(drive);
}
@@ -1248,11 +1266,10 @@ static void ide_port_free_devices(ide_hwif_t *hwif)
static int ide_port_alloc_devices(ide_hwif_t *hwif, int node)
{
+ ide_drive_t *drive;
int i;
for (i = 0; i < MAX_DRIVES; i++) {
- ide_drive_t *drive;
-
drive = kzalloc_node(sizeof(*drive), GFP_KERNEL, node);
if (drive == NULL)
goto out_nomem;
@@ -1267,12 +1284,21 @@ static int ide_port_alloc_devices(ide_hwif_t *hwif, int node)
*/
drive->id = kzalloc_node(SECTOR_SIZE, GFP_KERNEL, node);
if (drive->id == NULL)
- goto out_nomem;
+ goto out_free_drive;
+
+ drive->sense_rq = kmalloc(sizeof(struct request) +
+ sizeof(struct ide_request), GFP_KERNEL);
+ if (!drive->sense_rq)
+ goto out_free_id;
hwif->devices[i] = drive;
}
return 0;
+out_free_id:
+ kfree(drive->id);
+out_free_drive:
+ kfree(drive);
out_nomem:
ide_port_free_devices(hwif);
return -ENOMEM;
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 9ecf4e3..3c1b7974 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -282,7 +282,7 @@ static void idetape_analyze_error(ide_drive_t *drive)
/* correct remaining bytes to transfer */
if (pc->flags & PC_FLAG_DMA_ERROR)
- rq->resid_len = tape->blk_size * get_unaligned_be32(&sense[3]);
+ scsi_req(rq)->resid_len = tape->blk_size * get_unaligned_be32(&sense[3]);
/*
* If error was the result of a zero-length read or write command,
@@ -316,7 +316,7 @@ static void idetape_analyze_error(ide_drive_t *drive)
pc->flags |= PC_FLAG_ABORT;
}
if (!(pc->flags & PC_FLAG_ABORT) &&
- (blk_rq_bytes(rq) - rq->resid_len))
+ (blk_rq_bytes(rq) - scsi_req(rq)->resid_len))
pc->retries = IDETAPE_MAX_PC_RETRIES + 1;
}
}
@@ -348,7 +348,7 @@ static int ide_tape_callback(ide_drive_t *drive, int dsc)
"itself - Aborting request!\n");
} else if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) {
unsigned int blocks =
- (blk_rq_bytes(rq) - rq->resid_len) / tape->blk_size;
+ (blk_rq_bytes(rq) - scsi_req(rq)->resid_len) / tape->blk_size;
tape->avg_size += blocks * tape->blk_size;
@@ -560,7 +560,7 @@ static void ide_tape_create_rw_cmd(idetape_tape_t *tape,
pc->flags |= PC_FLAG_WRITING;
}
- memcpy(rq->cmd, pc->c, 12);
+ memcpy(scsi_req(rq)->cmd, pc->c, 12);
}
static ide_startstop_t idetape_do_request(ide_drive_t *drive,
@@ -570,14 +570,16 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = NULL;
struct ide_cmd cmd;
+ struct scsi_request *req = scsi_req(rq);
u8 stat;
ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, sector: %llu, nr_sectors: %u",
- rq->cmd[0], (unsigned long long)blk_rq_pos(rq),
+ req->cmd[0], (unsigned long long)blk_rq_pos(rq),
blk_rq_sectors(rq));
- BUG_ON(!(rq->cmd_type == REQ_TYPE_DRV_PRIV ||
- rq->cmd_type == REQ_TYPE_ATA_SENSE));
+ BUG_ON(!blk_rq_is_private(rq));
+ BUG_ON(ide_req(rq)->type != ATA_PRIV_MISC &&
+ ide_req(rq)->type != ATA_PRIV_SENSE);
/* Retry a failed packet command */
if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) {
@@ -592,7 +594,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
stat = hwif->tp_ops->read_status(hwif);
if ((drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) == 0 &&
- (rq->cmd[13] & REQ_IDETAPE_PC2) == 0)
+ (req->cmd[13] & REQ_IDETAPE_PC2) == 0)
drive->atapi_flags |= IDE_AFLAG_IGNORE_DSC;
if (drive->dev_flags & IDE_DFLAG_POST_RESET) {
@@ -609,7 +611,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
} else if (time_after(jiffies, tape->dsc_timeout)) {
printk(KERN_ERR "ide-tape: %s: DSC timeout\n",
tape->name);
- if (rq->cmd[13] & REQ_IDETAPE_PC2) {
+ if (req->cmd[13] & REQ_IDETAPE_PC2) {
idetape_media_access_finished(drive);
return ide_stopped;
} else {
@@ -626,23 +628,23 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
tape->postponed_rq = false;
}
- if (rq->cmd[13] & REQ_IDETAPE_READ) {
+ if (req->cmd[13] & REQ_IDETAPE_READ) {
pc = &tape->queued_pc;
ide_tape_create_rw_cmd(tape, pc, rq, READ_6);
goto out;
}
- if (rq->cmd[13] & REQ_IDETAPE_WRITE) {
+ if (req->cmd[13] & REQ_IDETAPE_WRITE) {
pc = &tape->queued_pc;
ide_tape_create_rw_cmd(tape, pc, rq, WRITE_6);
goto out;
}
- if (rq->cmd[13] & REQ_IDETAPE_PC1) {
+ if (req->cmd[13] & REQ_IDETAPE_PC1) {
pc = (struct ide_atapi_pc *)rq->special;
- rq->cmd[13] &= ~(REQ_IDETAPE_PC1);
- rq->cmd[13] |= REQ_IDETAPE_PC2;
+ req->cmd[13] &= ~(REQ_IDETAPE_PC1);
+ req->cmd[13] |= REQ_IDETAPE_PC2;
goto out;
}
- if (rq->cmd[13] & REQ_IDETAPE_PC2) {
+ if (req->cmd[13] & REQ_IDETAPE_PC2) {
idetape_media_access_finished(drive);
return ide_stopped;
}
@@ -852,9 +854,10 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size)
BUG_ON(cmd != REQ_IDETAPE_READ && cmd != REQ_IDETAPE_WRITE);
BUG_ON(size < 0 || size % tape->blk_size);
- rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_DRV_PRIV;
- rq->cmd[13] = cmd;
+ rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_MISC;
+ scsi_req(rq)->cmd[13] = cmd;
rq->rq_disk = tape->disk;
rq->__sector = tape->first_frame;
@@ -868,7 +871,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size)
blk_execute_rq(drive->queue, tape->disk, rq, 0);
/* calculate the number of transferred bytes and update buffer state */
- size -= rq->resid_len;
+ size -= scsi_req(rq)->resid_len;
tape->cur = tape->buf;
if (cmd == REQ_IDETAPE_READ)
tape->valid = size;
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index a716693..247b9fa 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -428,10 +428,12 @@ int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
{
struct request *rq;
int error;
- int rw = !(cmd->tf_flags & IDE_TFLAG_WRITE) ? READ : WRITE;
- rq = blk_get_request(drive->queue, rw, __GFP_RECLAIM);
- rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+ rq = blk_get_request(drive->queue,
+ (cmd->tf_flags & IDE_TFLAG_WRITE) ?
+ REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM);
+ scsi_req_init(rq);
+ ide_req(rq)->type = ATA_PRIV_TASKFILE;
/*
* (ks) We transfer currently only whole sectors.
diff --git a/drivers/ide/sis5513.c b/drivers/ide/sis5513.c
index 247853e..c3062b5 100644
--- a/drivers/ide/sis5513.c
+++ b/drivers/ide/sis5513.c
@@ -54,7 +54,7 @@
#define DRV_NAME "sis5513"
/* registers layout and init values are chipset family dependent */
-
+#undef ATA_16
#define ATA_16 0x01
#define ATA_33 0x02
#define ATA_66 0x03
diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
index 2f5d5f4..0527141 100644
--- a/drivers/lightnvm/Kconfig
+++ b/drivers/lightnvm/Kconfig
@@ -26,15 +26,6 @@ config NVM_DEBUG
It is required to create/remove targets without IOCTLs.
-config NVM_GENNVM
- tristate "General Non-Volatile Memory Manager for Open-Channel SSDs"
- ---help---
- Non-volatile memory media manager for Open-Channel SSDs that implements
- physical media metadata management and block provisioning API.
-
- This is the standard media manager for using Open-Channel SSDs, and
- required for targets to be instantiated.
-
config NVM_RRPC
tristate "Round-robin Hybrid Open-Channel SSD target"
---help---
diff --git a/drivers/lightnvm/Makefile b/drivers/lightnvm/Makefile
index a7a0a22..b2a39e2 100644
--- a/drivers/lightnvm/Makefile
+++ b/drivers/lightnvm/Makefile
@@ -2,6 +2,5 @@
# Makefile for Open-Channel SSDs.
#
-obj-$(CONFIG_NVM) := core.o sysblk.o
-obj-$(CONFIG_NVM_GENNVM) += gennvm.o
+obj-$(CONFIG_NVM) := core.o
obj-$(CONFIG_NVM_RRPC) += rrpc.o
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 02240a0..5262ba6 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -29,10 +29,483 @@
static LIST_HEAD(nvm_tgt_types);
static DECLARE_RWSEM(nvm_tgtt_lock);
-static LIST_HEAD(nvm_mgrs);
static LIST_HEAD(nvm_devices);
static DECLARE_RWSEM(nvm_lock);
+/* Map between virtual and physical channel and lun */
+struct nvm_ch_map {
+ int ch_off;
+ int nr_luns;
+ int *lun_offs;
+};
+
+struct nvm_dev_map {
+ struct nvm_ch_map *chnls;
+ int nr_chnls;
+};
+
+struct nvm_area {
+ struct list_head list;
+ sector_t begin;
+ sector_t end; /* end is excluded */
+};
+
+static struct nvm_target *nvm_find_target(struct nvm_dev *dev, const char *name)
+{
+ struct nvm_target *tgt;
+
+ list_for_each_entry(tgt, &dev->targets, list)
+ if (!strcmp(name, tgt->disk->disk_name))
+ return tgt;
+
+ return NULL;
+}
+
+static int nvm_reserve_luns(struct nvm_dev *dev, int lun_begin, int lun_end)
+{
+ int i;
+
+ for (i = lun_begin; i <= lun_end; i++) {
+ if (test_and_set_bit(i, dev->lun_map)) {
+ pr_err("nvm: lun %d already allocated\n", i);
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ while (--i > lun_begin)
+ clear_bit(i, dev->lun_map);
+
+ return -EBUSY;
+}
+
+static void nvm_release_luns_err(struct nvm_dev *dev, int lun_begin,
+ int lun_end)
+{
+ int i;
+
+ for (i = lun_begin; i <= lun_end; i++)
+ WARN_ON(!test_and_clear_bit(i, dev->lun_map));
+}
+
+static void nvm_remove_tgt_dev(struct nvm_tgt_dev *tgt_dev)
+{
+ struct nvm_dev *dev = tgt_dev->parent;
+ struct nvm_dev_map *dev_map = tgt_dev->map;
+ int i, j;
+
+ for (i = 0; i < dev_map->nr_chnls; i++) {
+ struct nvm_ch_map *ch_map = &dev_map->chnls[i];
+ int *lun_offs = ch_map->lun_offs;
+ int ch = i + ch_map->ch_off;
+
+ for (j = 0; j < ch_map->nr_luns; j++) {
+ int lun = j + lun_offs[j];
+ int lunid = (ch * dev->geo.luns_per_chnl) + lun;
+
+ WARN_ON(!test_and_clear_bit(lunid, dev->lun_map));
+ }
+
+ kfree(ch_map->lun_offs);
+ }
+
+ kfree(dev_map->chnls);
+ kfree(dev_map);
+
+ kfree(tgt_dev->luns);
+ kfree(tgt_dev);
+}
+
+static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
+ int lun_begin, int lun_end)
+{
+ struct nvm_tgt_dev *tgt_dev = NULL;
+ struct nvm_dev_map *dev_rmap = dev->rmap;
+ struct nvm_dev_map *dev_map;
+ struct ppa_addr *luns;
+ int nr_luns = lun_end - lun_begin + 1;
+ int luns_left = nr_luns;
+ int nr_chnls = nr_luns / dev->geo.luns_per_chnl;
+ int nr_chnls_mod = nr_luns % dev->geo.luns_per_chnl;
+ int bch = lun_begin / dev->geo.luns_per_chnl;
+ int blun = lun_begin % dev->geo.luns_per_chnl;
+ int lunid = 0;
+ int lun_balanced = 1;
+ int prev_nr_luns;
+ int i, j;
+
+ nr_chnls = nr_luns / dev->geo.luns_per_chnl;
+ nr_chnls = (nr_chnls_mod == 0) ? nr_chnls : nr_chnls + 1;
+
+ dev_map = kmalloc(sizeof(struct nvm_dev_map), GFP_KERNEL);
+ if (!dev_map)
+ goto err_dev;
+
+ dev_map->chnls = kcalloc(nr_chnls, sizeof(struct nvm_ch_map),
+ GFP_KERNEL);
+ if (!dev_map->chnls)
+ goto err_chnls;
+
+ luns = kcalloc(nr_luns, sizeof(struct ppa_addr), GFP_KERNEL);
+ if (!luns)
+ goto err_luns;
+
+ prev_nr_luns = (luns_left > dev->geo.luns_per_chnl) ?
+ dev->geo.luns_per_chnl : luns_left;
+ for (i = 0; i < nr_chnls; i++) {
+ struct nvm_ch_map *ch_rmap = &dev_rmap->chnls[i + bch];
+ int *lun_roffs = ch_rmap->lun_offs;
+ struct nvm_ch_map *ch_map = &dev_map->chnls[i];
+ int *lun_offs;
+ int luns_in_chnl = (luns_left > dev->geo.luns_per_chnl) ?
+ dev->geo.luns_per_chnl : luns_left;
+
+ if (lun_balanced && prev_nr_luns != luns_in_chnl)
+ lun_balanced = 0;
+
+ ch_map->ch_off = ch_rmap->ch_off = bch;
+ ch_map->nr_luns = luns_in_chnl;
+
+ lun_offs = kcalloc(luns_in_chnl, sizeof(int), GFP_KERNEL);
+ if (!lun_offs)
+ goto err_ch;
+
+ for (j = 0; j < luns_in_chnl; j++) {
+ luns[lunid].ppa = 0;
+ luns[lunid].g.ch = i;
+ luns[lunid++].g.lun = j;
+
+ lun_offs[j] = blun;
+ lun_roffs[j + blun] = blun;
+ }
+
+ ch_map->lun_offs = lun_offs;
+
+ /* when starting a new channel, lun offset is reset */
+ blun = 0;
+ luns_left -= luns_in_chnl;
+ }
+
+ dev_map->nr_chnls = nr_chnls;
+
+ tgt_dev = kmalloc(sizeof(struct nvm_tgt_dev), GFP_KERNEL);
+ if (!tgt_dev)
+ goto err_ch;
+
+ memcpy(&tgt_dev->geo, &dev->geo, sizeof(struct nvm_geo));
+ /* Target device only owns a portion of the physical device */
+ tgt_dev->geo.nr_chnls = nr_chnls;
+ tgt_dev->geo.nr_luns = nr_luns;
+ tgt_dev->geo.luns_per_chnl = (lun_balanced) ? prev_nr_luns : -1;
+ tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
+ tgt_dev->q = dev->q;
+ tgt_dev->map = dev_map;
+ tgt_dev->luns = luns;
+ memcpy(&tgt_dev->identity, &dev->identity, sizeof(struct nvm_id));
+
+ tgt_dev->parent = dev;
+
+ return tgt_dev;
+err_ch:
+ while (--i > 0)
+ kfree(dev_map->chnls[i].lun_offs);
+ kfree(luns);
+err_luns:
+ kfree(dev_map->chnls);
+err_chnls:
+ kfree(dev_map);
+err_dev:
+ return tgt_dev;
+}
+
+static const struct block_device_operations nvm_fops = {
+ .owner = THIS_MODULE,
+};
+
+static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
+{
+ struct nvm_ioctl_create_simple *s = &create->conf.s;
+ struct request_queue *tqueue;
+ struct gendisk *tdisk;
+ struct nvm_tgt_type *tt;
+ struct nvm_target *t;
+ struct nvm_tgt_dev *tgt_dev;
+ void *targetdata;
+
+ tt = nvm_find_target_type(create->tgttype, 1);
+ if (!tt) {
+ pr_err("nvm: target type %s not found\n", create->tgttype);
+ return -EINVAL;
+ }
+
+ mutex_lock(&dev->mlock);
+ t = nvm_find_target(dev, create->tgtname);
+ if (t) {
+ pr_err("nvm: target name already exists.\n");
+ mutex_unlock(&dev->mlock);
+ return -EINVAL;
+ }
+ mutex_unlock(&dev->mlock);
+
+ if (nvm_reserve_luns(dev, s->lun_begin, s->lun_end))
+ return -ENOMEM;
+
+ t = kmalloc(sizeof(struct nvm_target), GFP_KERNEL);
+ if (!t)
+ goto err_reserve;
+
+ tgt_dev = nvm_create_tgt_dev(dev, s->lun_begin, s->lun_end);
+ if (!tgt_dev) {
+ pr_err("nvm: could not create target device\n");
+ goto err_t;
+ }
+
+ tqueue = blk_alloc_queue_node(GFP_KERNEL, dev->q->node);
+ if (!tqueue)
+ goto err_dev;
+ blk_queue_make_request(tqueue, tt->make_rq);
+
+ tdisk = alloc_disk(0);
+ if (!tdisk)
+ goto err_queue;
+
+ sprintf(tdisk->disk_name, "%s", create->tgtname);
+ tdisk->flags = GENHD_FL_EXT_DEVT;
+ tdisk->major = 0;
+ tdisk->first_minor = 0;
+ tdisk->fops = &nvm_fops;
+ tdisk->queue = tqueue;
+
+ targetdata = tt->init(tgt_dev, tdisk);
+ if (IS_ERR(targetdata))
+ goto err_init;
+
+ tdisk->private_data = targetdata;
+ tqueue->queuedata = targetdata;
+
+ blk_queue_max_hw_sectors(tqueue, 8 * dev->ops->max_phys_sect);
+
+ set_capacity(tdisk, tt->capacity(targetdata));
+ add_disk(tdisk);
+
+ if (tt->sysfs_init && tt->sysfs_init(tdisk))
+ goto err_sysfs;
+
+ t->type = tt;
+ t->disk = tdisk;
+ t->dev = tgt_dev;
+
+ mutex_lock(&dev->mlock);
+ list_add_tail(&t->list, &dev->targets);
+ mutex_unlock(&dev->mlock);
+
+ return 0;
+err_sysfs:
+ if (tt->exit)
+ tt->exit(targetdata);
+err_init:
+ put_disk(tdisk);
+err_queue:
+ blk_cleanup_queue(tqueue);
+err_dev:
+ nvm_remove_tgt_dev(tgt_dev);
+err_t:
+ kfree(t);
+err_reserve:
+ nvm_release_luns_err(dev, s->lun_begin, s->lun_end);
+ return -ENOMEM;
+}
+
+static void __nvm_remove_target(struct nvm_target *t)
+{
+ struct nvm_tgt_type *tt = t->type;
+ struct gendisk *tdisk = t->disk;
+ struct request_queue *q = tdisk->queue;
+
+ del_gendisk(tdisk);
+ blk_cleanup_queue(q);
+
+ if (tt->sysfs_exit)
+ tt->sysfs_exit(tdisk);
+
+ if (tt->exit)
+ tt->exit(tdisk->private_data);
+
+ nvm_remove_tgt_dev(t->dev);
+ put_disk(tdisk);
+
+ list_del(&t->list);
+ kfree(t);
+}
+
+/**
+ * nvm_remove_tgt - Removes a target from the media manager
+ * @dev: device
+ * @remove: ioctl structure with target name to remove.
+ *
+ * Returns:
+ * 0: on success
+ * 1: on not found
+ * <0: on error
+ */
+static int nvm_remove_tgt(struct nvm_dev *dev, struct nvm_ioctl_remove *remove)
+{
+ struct nvm_target *t;
+
+ mutex_lock(&dev->mlock);
+ t = nvm_find_target(dev, remove->tgtname);
+ if (!t) {
+ mutex_unlock(&dev->mlock);
+ return 1;
+ }
+ __nvm_remove_target(t);
+ mutex_unlock(&dev->mlock);
+
+ return 0;
+}
+
+static int nvm_register_map(struct nvm_dev *dev)
+{
+ struct nvm_dev_map *rmap;
+ int i, j;
+
+ rmap = kmalloc(sizeof(struct nvm_dev_map), GFP_KERNEL);
+ if (!rmap)
+ goto err_rmap;
+
+ rmap->chnls = kcalloc(dev->geo.nr_chnls, sizeof(struct nvm_ch_map),
+ GFP_KERNEL);
+ if (!rmap->chnls)
+ goto err_chnls;
+
+ for (i = 0; i < dev->geo.nr_chnls; i++) {
+ struct nvm_ch_map *ch_rmap;
+ int *lun_roffs;
+ int luns_in_chnl = dev->geo.luns_per_chnl;
+
+ ch_rmap = &rmap->chnls[i];
+
+ ch_rmap->ch_off = -1;
+ ch_rmap->nr_luns = luns_in_chnl;
+
+ lun_roffs = kcalloc(luns_in_chnl, sizeof(int), GFP_KERNEL);
+ if (!lun_roffs)
+ goto err_ch;
+
+ for (j = 0; j < luns_in_chnl; j++)
+ lun_roffs[j] = -1;
+
+ ch_rmap->lun_offs = lun_roffs;
+ }
+
+ dev->rmap = rmap;
+
+ return 0;
+err_ch:
+ while (--i >= 0)
+ kfree(rmap->chnls[i].lun_offs);
+err_chnls:
+ kfree(rmap);
+err_rmap:
+ return -ENOMEM;
+}
+
+static void nvm_map_to_dev(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
+{
+ struct nvm_dev_map *dev_map = tgt_dev->map;
+ struct nvm_ch_map *ch_map = &dev_map->chnls[p->g.ch];
+ int lun_off = ch_map->lun_offs[p->g.lun];
+
+ p->g.ch += ch_map->ch_off;
+ p->g.lun += lun_off;
+}
+
+static void nvm_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
+{
+ struct nvm_dev *dev = tgt_dev->parent;
+ struct nvm_dev_map *dev_rmap = dev->rmap;
+ struct nvm_ch_map *ch_rmap = &dev_rmap->chnls[p->g.ch];
+ int lun_roff = ch_rmap->lun_offs[p->g.lun];
+
+ p->g.ch -= ch_rmap->ch_off;
+ p->g.lun -= lun_roff;
+}
+
+static void nvm_ppa_tgt_to_dev(struct nvm_tgt_dev *tgt_dev,
+ struct ppa_addr *ppa_list, int nr_ppas)
+{
+ int i;
+
+ for (i = 0; i < nr_ppas; i++) {
+ nvm_map_to_dev(tgt_dev, &ppa_list[i]);
+ ppa_list[i] = generic_to_dev_addr(tgt_dev, ppa_list[i]);
+ }
+}
+
+static void nvm_ppa_dev_to_tgt(struct nvm_tgt_dev *tgt_dev,
+ struct ppa_addr *ppa_list, int nr_ppas)
+{
+ int i;
+
+ for (i = 0; i < nr_ppas; i++) {
+ ppa_list[i] = dev_to_generic_addr(tgt_dev, ppa_list[i]);
+ nvm_map_to_tgt(tgt_dev, &ppa_list[i]);
+ }
+}
+
+static void nvm_rq_tgt_to_dev(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
+{
+ if (rqd->nr_ppas == 1) {
+ nvm_ppa_tgt_to_dev(tgt_dev, &rqd->ppa_addr, 1);
+ return;
+ }
+
+ nvm_ppa_tgt_to_dev(tgt_dev, rqd->ppa_list, rqd->nr_ppas);
+}
+
+static void nvm_rq_dev_to_tgt(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
+{
+ if (rqd->nr_ppas == 1) {
+ nvm_ppa_dev_to_tgt(tgt_dev, &rqd->ppa_addr, 1);
+ return;
+ }
+
+ nvm_ppa_dev_to_tgt(tgt_dev, rqd->ppa_list, rqd->nr_ppas);
+}
+
+void nvm_part_to_tgt(struct nvm_dev *dev, sector_t *entries,
+ int len)
+{
+ struct nvm_geo *geo = &dev->geo;
+ struct nvm_dev_map *dev_rmap = dev->rmap;
+ u64 i;
+
+ for (i = 0; i < len; i++) {
+ struct nvm_ch_map *ch_rmap;
+ int *lun_roffs;
+ struct ppa_addr gaddr;
+ u64 pba = le64_to_cpu(entries[i]);
+ int off;
+ u64 diff;
+
+ if (!pba)
+ continue;
+
+ gaddr = linear_to_generic_addr(geo, pba);
+ ch_rmap = &dev_rmap->chnls[gaddr.g.ch];
+ lun_roffs = ch_rmap->lun_offs;
+
+ off = gaddr.g.ch * geo->luns_per_chnl + gaddr.g.lun;
+
+ diff = ((ch_rmap->ch_off * geo->luns_per_chnl) +
+ (lun_roffs[gaddr.g.lun])) * geo->sec_per_lun;
+
+ entries[i] -= cpu_to_le64(diff);
+ }
+}
+EXPORT_SYMBOL(nvm_part_to_tgt);
+
struct nvm_tgt_type *nvm_find_target_type(const char *name, int lock)
{
struct nvm_tgt_type *tmp, *tt = NULL;
@@ -92,78 +565,6 @@ void nvm_dev_dma_free(struct nvm_dev *dev, void *addr, dma_addr_t dma_handler)
}
EXPORT_SYMBOL(nvm_dev_dma_free);
-static struct nvmm_type *nvm_find_mgr_type(const char *name)
-{
- struct nvmm_type *mt;
-
- list_for_each_entry(mt, &nvm_mgrs, list)
- if (!strcmp(name, mt->name))
- return mt;
-
- return NULL;
-}
-
-static struct nvmm_type *nvm_init_mgr(struct nvm_dev *dev)
-{
- struct nvmm_type *mt;
- int ret;
-
- lockdep_assert_held(&nvm_lock);
-
- list_for_each_entry(mt, &nvm_mgrs, list) {
- if (strncmp(dev->sb.mmtype, mt->name, NVM_MMTYPE_LEN))
- continue;
-
- ret = mt->register_mgr(dev);
- if (ret < 0) {
- pr_err("nvm: media mgr failed to init (%d) on dev %s\n",
- ret, dev->name);
- return NULL; /* initialization failed */
- } else if (ret > 0)
- return mt;
- }
-
- return NULL;
-}
-
-int nvm_register_mgr(struct nvmm_type *mt)
-{
- struct nvm_dev *dev;
- int ret = 0;
-
- down_write(&nvm_lock);
- if (nvm_find_mgr_type(mt->name)) {
- ret = -EEXIST;
- goto finish;
- } else {
- list_add(&mt->list, &nvm_mgrs);
- }
-
- /* try to register media mgr if any device have none configured */
- list_for_each_entry(dev, &nvm_devices, devices) {
- if (dev->mt)
- continue;
-
- dev->mt = nvm_init_mgr(dev);
- }
-finish:
- up_write(&nvm_lock);
-
- return ret;
-}
-EXPORT_SYMBOL(nvm_register_mgr);
-
-void nvm_unregister_mgr(struct nvmm_type *mt)
-{
- if (!mt)
- return;
-
- down_write(&nvm_lock);
- list_del(&mt->list);
- up_write(&nvm_lock);
-}
-EXPORT_SYMBOL(nvm_unregister_mgr);
-
static struct nvm_dev *nvm_find_nvm_dev(const char *name)
{
struct nvm_dev *dev;
@@ -175,53 +576,6 @@ static struct nvm_dev *nvm_find_nvm_dev(const char *name)
return NULL;
}
-static void nvm_tgt_generic_to_addr_mode(struct nvm_tgt_dev *tgt_dev,
- struct nvm_rq *rqd)
-{
- struct nvm_dev *dev = tgt_dev->parent;
- int i;
-
- if (rqd->nr_ppas > 1) {
- for (i = 0; i < rqd->nr_ppas; i++) {
- rqd->ppa_list[i] = dev->mt->trans_ppa(tgt_dev,
- rqd->ppa_list[i], TRANS_TGT_TO_DEV);
- rqd->ppa_list[i] = generic_to_dev_addr(dev,
- rqd->ppa_list[i]);
- }
- } else {
- rqd->ppa_addr = dev->mt->trans_ppa(tgt_dev, rqd->ppa_addr,
- TRANS_TGT_TO_DEV);
- rqd->ppa_addr = generic_to_dev_addr(dev, rqd->ppa_addr);
- }
-}
-
-int nvm_set_bb_tbl(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas,
- int type)
-{
- struct nvm_rq rqd;
- int ret;
-
- if (nr_ppas > dev->ops->max_phys_sect) {
- pr_err("nvm: unable to update all sysblocks atomically\n");
- return -EINVAL;
- }
-
- memset(&rqd, 0, sizeof(struct nvm_rq));
-
- nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas, 1);
- nvm_generic_to_addr_mode(dev, &rqd);
-
- ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
- nvm_free_rqd_ppalist(dev, &rqd);
- if (ret) {
- pr_err("nvm: sysblk failed bb mark\n");
- return -EINVAL;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(nvm_set_bb_tbl);
-
int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
int nr_ppas, int type)
{
@@ -237,12 +591,12 @@ int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
memset(&rqd, 0, sizeof(struct nvm_rq));
nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas, 1);
- nvm_tgt_generic_to_addr_mode(tgt_dev, &rqd);
+ nvm_rq_tgt_to_dev(tgt_dev, &rqd);
ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
nvm_free_rqd_ppalist(dev, &rqd);
if (ret) {
- pr_err("nvm: sysblk failed bb mark\n");
+ pr_err("nvm: failed bb mark\n");
return -EINVAL;
}
@@ -262,15 +616,42 @@ int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
{
struct nvm_dev *dev = tgt_dev->parent;
- return dev->mt->submit_io(tgt_dev, rqd);
+ if (!dev->ops->submit_io)
+ return -ENODEV;
+
+ nvm_rq_tgt_to_dev(tgt_dev, rqd);
+
+ rqd->dev = tgt_dev;
+ return dev->ops->submit_io(dev, rqd);
}
EXPORT_SYMBOL(nvm_submit_io);
-int nvm_erase_blk(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p, int flags)
+int nvm_erase_blk(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas, int flags)
{
struct nvm_dev *dev = tgt_dev->parent;
+ struct nvm_rq rqd;
+ int ret;
+
+ if (!dev->ops->erase_block)
+ return 0;
+
+ nvm_map_to_dev(tgt_dev, ppas);
+
+ memset(&rqd, 0, sizeof(struct nvm_rq));
+
+ ret = nvm_set_rqd_ppalist(dev, &rqd, ppas, 1, 1);
+ if (ret)
+ return ret;
+
+ nvm_rq_tgt_to_dev(tgt_dev, &rqd);
+
+ rqd.flags = flags;
+
+ ret = dev->ops->erase_block(dev, &rqd);
- return dev->mt->erase_blk(tgt_dev, p, flags);
+ nvm_free_rqd_ppalist(dev, &rqd);
+
+ return ret;
}
EXPORT_SYMBOL(nvm_erase_blk);
@@ -289,46 +670,67 @@ EXPORT_SYMBOL(nvm_get_l2p_tbl);
int nvm_get_area(struct nvm_tgt_dev *tgt_dev, sector_t *lba, sector_t len)
{
struct nvm_dev *dev = tgt_dev->parent;
+ struct nvm_geo *geo = &dev->geo;
+ struct nvm_area *area, *prev, *next;
+ sector_t begin = 0;
+ sector_t max_sectors = (geo->sec_size * dev->total_secs) >> 9;
- return dev->mt->get_area(dev, lba, len);
-}
-EXPORT_SYMBOL(nvm_get_area);
+ if (len > max_sectors)
+ return -EINVAL;
-void nvm_put_area(struct nvm_tgt_dev *tgt_dev, sector_t lba)
-{
- struct nvm_dev *dev = tgt_dev->parent;
+ area = kmalloc(sizeof(struct nvm_area), GFP_KERNEL);
+ if (!area)
+ return -ENOMEM;
- dev->mt->put_area(dev, lba);
-}
-EXPORT_SYMBOL(nvm_put_area);
+ prev = NULL;
-void nvm_addr_to_generic_mode(struct nvm_dev *dev, struct nvm_rq *rqd)
-{
- int i;
+ spin_lock(&dev->lock);
+ list_for_each_entry(next, &dev->area_list, list) {
+ if (begin + len > next->begin) {
+ begin = next->end;
+ prev = next;
+ continue;
+ }
+ break;
+ }
- if (rqd->nr_ppas > 1) {
- for (i = 0; i < rqd->nr_ppas; i++)
- rqd->ppa_list[i] = dev_to_generic_addr(dev,
- rqd->ppa_list[i]);
- } else {
- rqd->ppa_addr = dev_to_generic_addr(dev, rqd->ppa_addr);
+ if ((begin + len) > max_sectors) {
+ spin_unlock(&dev->lock);
+ kfree(area);
+ return -EINVAL;
}
+
+ area->begin = *lba = begin;
+ area->end = begin + len;
+
+ if (prev) /* insert into sorted order */
+ list_add(&area->list, &prev->list);
+ else
+ list_add(&area->list, &dev->area_list);
+ spin_unlock(&dev->lock);
+
+ return 0;
}
-EXPORT_SYMBOL(nvm_addr_to_generic_mode);
+EXPORT_SYMBOL(nvm_get_area);
-void nvm_generic_to_addr_mode(struct nvm_dev *dev, struct nvm_rq *rqd)
+void nvm_put_area(struct nvm_tgt_dev *tgt_dev, sector_t begin)
{
- int i;
+ struct nvm_dev *dev = tgt_dev->parent;
+ struct nvm_area *area;
- if (rqd->nr_ppas > 1) {
- for (i = 0; i < rqd->nr_ppas; i++)
- rqd->ppa_list[i] = generic_to_dev_addr(dev,
- rqd->ppa_list[i]);
- } else {
- rqd->ppa_addr = generic_to_dev_addr(dev, rqd->ppa_addr);
+ spin_lock(&dev->lock);
+ list_for_each_entry(area, &dev->area_list, list) {
+ if (area->begin != begin)
+ continue;
+
+ list_del(&area->list);
+ spin_unlock(&dev->lock);
+ kfree(area);
+ return;
}
+ spin_unlock(&dev->lock);
}
-EXPORT_SYMBOL(nvm_generic_to_addr_mode);
+EXPORT_SYMBOL(nvm_put_area);
int nvm_set_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd,
const struct ppa_addr *ppas, int nr_ppas, int vblk)
@@ -380,149 +782,19 @@ void nvm_free_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd)
}
EXPORT_SYMBOL(nvm_free_rqd_ppalist);
-int nvm_erase_ppa(struct nvm_dev *dev, struct ppa_addr *ppas, int nr_ppas,
- int flags)
+void nvm_end_io(struct nvm_rq *rqd)
{
- struct nvm_rq rqd;
- int ret;
+ struct nvm_tgt_dev *tgt_dev = rqd->dev;
- if (!dev->ops->erase_block)
- return 0;
+ /* Convert address space */
+ if (tgt_dev)
+ nvm_rq_dev_to_tgt(tgt_dev, rqd);
- memset(&rqd, 0, sizeof(struct nvm_rq));
-
- ret = nvm_set_rqd_ppalist(dev, &rqd, ppas, nr_ppas, 1);
- if (ret)
- return ret;
-
- nvm_generic_to_addr_mode(dev, &rqd);
-
- rqd.flags = flags;
-
- ret = dev->ops->erase_block(dev, &rqd);
-
- nvm_free_rqd_ppalist(dev, &rqd);
-
- return ret;
-}
-EXPORT_SYMBOL(nvm_erase_ppa);
-
-void nvm_end_io(struct nvm_rq *rqd, int error)
-{
- rqd->error = error;
- rqd->end_io(rqd);
+ if (rqd->end_io)
+ rqd->end_io(rqd);
}
EXPORT_SYMBOL(nvm_end_io);
-static void nvm_end_io_sync(struct nvm_rq *rqd)
-{
- struct completion *waiting = rqd->wait;
-
- rqd->wait = NULL;
-
- complete(waiting);
-}
-
-static int __nvm_submit_ppa(struct nvm_dev *dev, struct nvm_rq *rqd, int opcode,
- int flags, void *buf, int len)
-{
- DECLARE_COMPLETION_ONSTACK(wait);
- struct bio *bio;
- int ret;
- unsigned long hang_check;
-
- bio = bio_map_kern(dev->q, buf, len, GFP_KERNEL);
- if (IS_ERR_OR_NULL(bio))
- return -ENOMEM;
-
- nvm_generic_to_addr_mode(dev, rqd);
-
- rqd->dev = NULL;
- rqd->opcode = opcode;
- rqd->flags = flags;
- rqd->bio = bio;
- rqd->wait = &wait;
- rqd->end_io = nvm_end_io_sync;
-
- ret = dev->ops->submit_io(dev, rqd);
- if (ret) {
- bio_put(bio);
- return ret;
- }
-
- /* Prevent hang_check timer from firing at us during very long I/O */
- hang_check = sysctl_hung_task_timeout_secs;
- if (hang_check)
- while (!wait_for_completion_io_timeout(&wait,
- hang_check * (HZ/2)))
- ;
- else
- wait_for_completion_io(&wait);
-
- return rqd->error;
-}
-
-/**
- * nvm_submit_ppa_list - submit user-defined ppa list to device. The user must
- * take to free ppa list if necessary.
- * @dev: device
- * @ppa_list: user created ppa_list
- * @nr_ppas: length of ppa_list
- * @opcode: device opcode
- * @flags: device flags
- * @buf: data buffer
- * @len: data buffer length
- */
-int nvm_submit_ppa_list(struct nvm_dev *dev, struct ppa_addr *ppa_list,
- int nr_ppas, int opcode, int flags, void *buf, int len)
-{
- struct nvm_rq rqd;
-
- if (dev->ops->max_phys_sect < nr_ppas)
- return -EINVAL;
-
- memset(&rqd, 0, sizeof(struct nvm_rq));
-
- rqd.nr_ppas = nr_ppas;
- if (nr_ppas > 1)
- rqd.ppa_list = ppa_list;
- else
- rqd.ppa_addr = ppa_list[0];
-
- return __nvm_submit_ppa(dev, &rqd, opcode, flags, buf, len);
-}
-EXPORT_SYMBOL(nvm_submit_ppa_list);
-
-/**
- * nvm_submit_ppa - submit PPAs to device. PPAs will automatically be unfolded
- * as single, dual, quad plane PPAs depending on device type.
- * @dev: device
- * @ppa: user created ppa_list
- * @nr_ppas: length of ppa_list
- * @opcode: device opcode
- * @flags: device flags
- * @buf: data buffer
- * @len: data buffer length
- */
-int nvm_submit_ppa(struct nvm_dev *dev, struct ppa_addr *ppa, int nr_ppas,
- int opcode, int flags, void *buf, int len)
-{
- struct nvm_rq rqd;
- int ret;
-
- memset(&rqd, 0, sizeof(struct nvm_rq));
- ret = nvm_set_rqd_ppalist(dev, &rqd, ppa, nr_ppas, 1);
- if (ret)
- return ret;
-
- ret = __nvm_submit_ppa(dev, &rqd, opcode, flags, buf, len);
-
- nvm_free_rqd_ppalist(dev, &rqd);
-
- return ret;
-}
-EXPORT_SYMBOL(nvm_submit_ppa);
-
/*
* folds a bad block list from its plane representation to its virtual
* block representation. The fold is done in place and reduced size is
@@ -559,21 +831,14 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
}
EXPORT_SYMBOL(nvm_bb_tbl_fold);
-int nvm_get_bb_tbl(struct nvm_dev *dev, struct ppa_addr ppa, u8 *blks)
-{
- ppa = generic_to_dev_addr(dev, ppa);
-
- return dev->ops->get_bb_tbl(dev, ppa, blks);
-}
-EXPORT_SYMBOL(nvm_get_bb_tbl);
-
int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr ppa,
u8 *blks)
{
struct nvm_dev *dev = tgt_dev->parent;
- ppa = dev->mt->trans_ppa(tgt_dev, ppa, TRANS_TGT_TO_DEV);
- return nvm_get_bb_tbl(dev, ppa, blks);
+ nvm_ppa_tgt_to_dev(tgt_dev, &ppa, 1);
+
+ return dev->ops->get_bb_tbl(dev, ppa, blks);
}
EXPORT_SYMBOL(nvm_get_tgt_bb_tbl);
@@ -627,7 +892,7 @@ static int nvm_init_mlc_tbl(struct nvm_dev *dev, struct nvm_id_group *grp)
static int nvm_core_init(struct nvm_dev *dev)
{
struct nvm_id *id = &dev->identity;
- struct nvm_id_group *grp = &id->groups[0];
+ struct nvm_id_group *grp = &id->grp;
struct nvm_geo *geo = &dev->geo;
int ret;
@@ -691,36 +956,31 @@ static int nvm_core_init(struct nvm_dev *dev)
goto err_fmtype;
}
+ INIT_LIST_HEAD(&dev->area_list);
+ INIT_LIST_HEAD(&dev->targets);
mutex_init(&dev->mlock);
spin_lock_init(&dev->lock);
- blk_queue_logical_block_size(dev->q, geo->sec_size);
+ ret = nvm_register_map(dev);
+ if (ret)
+ goto err_fmtype;
+ blk_queue_logical_block_size(dev->q, geo->sec_size);
return 0;
err_fmtype:
kfree(dev->lun_map);
return ret;
}
-static void nvm_free_mgr(struct nvm_dev *dev)
-{
- if (!dev->mt)
- return;
-
- dev->mt->unregister_mgr(dev);
- dev->mt = NULL;
-}
-
void nvm_free(struct nvm_dev *dev)
{
if (!dev)
return;
- nvm_free_mgr(dev);
-
if (dev->dma_pool)
dev->ops->destroy_dma_pool(dev->dma_pool);
+ kfree(dev->rmap);
kfree(dev->lptbl);
kfree(dev->lun_map);
kfree(dev);
@@ -731,28 +991,19 @@ static int nvm_init(struct nvm_dev *dev)
struct nvm_geo *geo = &dev->geo;
int ret = -EINVAL;
- if (!dev->q || !dev->ops)
- return ret;
-
if (dev->ops->identity(dev, &dev->identity)) {
pr_err("nvm: device could not be identified\n");
goto err;
}
- pr_debug("nvm: ver:%x nvm_vendor:%x groups:%u\n",
- dev->identity.ver_id, dev->identity.vmnt,
- dev->identity.cgrps);
+ pr_debug("nvm: ver:%x nvm_vendor:%x\n",
+ dev->identity.ver_id, dev->identity.vmnt);
if (dev->identity.ver_id != 1) {
pr_err("nvm: device not supported by kernel.");
goto err;
}
- if (dev->identity.cgrps != 1) {
- pr_err("nvm: only one group configuration supported.");
- goto err;
- }
-
ret = nvm_core_init(dev);
if (ret) {
pr_err("nvm: could not initialize core structures.\n");
@@ -779,49 +1030,50 @@ int nvm_register(struct nvm_dev *dev)
{
int ret;
- ret = nvm_init(dev);
- if (ret)
- goto err_init;
+ if (!dev->q || !dev->ops)
+ return -EINVAL;
if (dev->ops->max_phys_sect > 256) {
pr_info("nvm: max sectors supported is 256.\n");
- ret = -EINVAL;
- goto err_init;
+ return -EINVAL;
}
if (dev->ops->max_phys_sect > 1) {
dev->dma_pool = dev->ops->create_dma_pool(dev, "ppalist");
if (!dev->dma_pool) {
pr_err("nvm: could not create dma pool\n");
- ret = -ENOMEM;
- goto err_init;
+ return -ENOMEM;
}
}
- if (dev->identity.cap & NVM_ID_DCAP_BBLKMGMT) {
- ret = nvm_get_sysblock(dev, &dev->sb);
- if (!ret)
- pr_err("nvm: device not initialized.\n");
- else if (ret < 0)
- pr_err("nvm: err (%d) on device initialization\n", ret);
- }
+ ret = nvm_init(dev);
+ if (ret)
+ goto err_init;
/* register device with a supported media manager */
down_write(&nvm_lock);
- if (ret > 0)
- dev->mt = nvm_init_mgr(dev);
list_add(&dev->devices, &nvm_devices);
up_write(&nvm_lock);
return 0;
err_init:
- kfree(dev->lun_map);
+ dev->ops->destroy_dma_pool(dev->dma_pool);
return ret;
}
EXPORT_SYMBOL(nvm_register);
void nvm_unregister(struct nvm_dev *dev)
{
+ struct nvm_target *t, *tmp;
+
+ mutex_lock(&dev->mlock);
+ list_for_each_entry_safe(t, tmp, &dev->targets, list) {
+ if (t->dev->parent != dev)
+ continue;
+ __nvm_remove_target(t);
+ }
+ mutex_unlock(&dev->mlock);
+
down_write(&nvm_lock);
list_del(&dev->devices);
up_write(&nvm_lock);
@@ -844,24 +1096,24 @@ static int __nvm_configure_create(struct nvm_ioctl_create *create)
return -EINVAL;
}
- if (!dev->mt) {
- pr_info("nvm: device has no media manager registered.\n");
- return -ENODEV;
- }
-
if (create->conf.type != NVM_CONFIG_TYPE_SIMPLE) {
pr_err("nvm: config type not valid\n");
return -EINVAL;
}
s = &create->conf.s;
- if (s->lun_begin > s->lun_end || s->lun_end > dev->geo.nr_luns) {
+ if (s->lun_begin == -1 && s->lun_end == -1) {
+ s->lun_begin = 0;
+ s->lun_end = dev->geo.nr_luns - 1;
+ }
+
+ if (s->lun_begin > s->lun_end || s->lun_end >= dev->geo.nr_luns) {
pr_err("nvm: lun out of bound (%u:%u > %u)\n",
- s->lun_begin, s->lun_end, dev->geo.nr_luns);
+ s->lun_begin, s->lun_end, dev->geo.nr_luns - 1);
return -EINVAL;
}
- return dev->mt->create_tgt(dev, create);
+ return nvm_create_tgt(dev, create);
}
static long nvm_ioctl_info(struct file *file, void __user *arg)
@@ -923,16 +1175,14 @@ static long nvm_ioctl_get_devices(struct file *file, void __user *arg)
struct nvm_ioctl_device_info *info = &devices->info[i];
sprintf(info->devname, "%s", dev->name);
- if (dev->mt) {
- info->bmversion[0] = dev->mt->version[0];
- info->bmversion[1] = dev->mt->version[1];
- info->bmversion[2] = dev->mt->version[2];
- sprintf(info->bmname, "%s", dev->mt->name);
- } else {
- sprintf(info->bmname, "none");
- }
+ /* kept for compatibility */
+ info->bmversion[0] = 1;
+ info->bmversion[1] = 0;
+ info->bmversion[2] = 0;
+ sprintf(info->bmname, "%s", "gennvm");
i++;
+
if (i > 31) {
pr_err("nvm: max 31 devices can be reported.\n");
break;
@@ -994,7 +1244,7 @@ static long nvm_ioctl_dev_remove(struct file *file, void __user *arg)
}
list_for_each_entry(dev, &nvm_devices, devices) {
- ret = dev->mt->remove_tgt(dev, &remove);
+ ret = nvm_remove_tgt(dev, &remove);
if (!ret)
break;
}
@@ -1002,47 +1252,7 @@ static long nvm_ioctl_dev_remove(struct file *file, void __user *arg)
return ret;
}
-static void nvm_setup_nvm_sb_info(struct nvm_sb_info *info)
-{
- info->seqnr = 1;
- info->erase_cnt = 0;
- info->version = 1;
-}
-
-static long __nvm_ioctl_dev_init(struct nvm_ioctl_dev_init *init)
-{
- struct nvm_dev *dev;
- struct nvm_sb_info info;
- int ret;
-
- down_write(&nvm_lock);
- dev = nvm_find_nvm_dev(init->dev);
- up_write(&nvm_lock);
- if (!dev) {
- pr_err("nvm: device not found\n");
- return -EINVAL;
- }
-
- nvm_setup_nvm_sb_info(&info);
-
- strncpy(info.mmtype, init->mmtype, NVM_MMTYPE_LEN);
- info.fs_ppa.ppa = -1;
-
- if (dev->identity.cap & NVM_ID_DCAP_BBLKMGMT) {
- ret = nvm_init_sysblock(dev, &info);
- if (ret)
- return ret;
- }
-
- memcpy(&dev->sb, &info, sizeof(struct nvm_sb_info));
-
- down_write(&nvm_lock);
- dev->mt = nvm_init_mgr(dev);
- up_write(&nvm_lock);
-
- return 0;
-}
-
+/* kept for compatibility reasons */
static long nvm_ioctl_dev_init(struct file *file, void __user *arg)
{
struct nvm_ioctl_dev_init init;
@@ -1058,15 +1268,13 @@ static long nvm_ioctl_dev_init(struct file *file, void __user *arg)
return -EINVAL;
}
- init.dev[DISK_NAME_LEN - 1] = '\0';
-
- return __nvm_ioctl_dev_init(&init);
+ return 0;
}
+/* Kept for compatibility reasons */
static long nvm_ioctl_dev_factory(struct file *file, void __user *arg)
{
struct nvm_ioctl_dev_factory fact;
- struct nvm_dev *dev;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -1079,19 +1287,6 @@ static long nvm_ioctl_dev_factory(struct file *file, void __user *arg)
if (fact.flags & ~(NVM_FACTORY_NR_BITS - 1))
return -EINVAL;
- down_write(&nvm_lock);
- dev = nvm_find_nvm_dev(fact.dev);
- up_write(&nvm_lock);
- if (!dev) {
- pr_err("nvm: device not found\n");
- return -EINVAL;
- }
-
- nvm_free_mgr(dev);
-
- if (dev->identity.cap & NVM_ID_DCAP_BBLKMGMT)
- return nvm_dev_factory(dev, fact.flags);
-
return 0;
}
diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
deleted file mode 100644
index ca78800..0000000
--- a/drivers/lightnvm/gennvm.c
+++ /dev/null
@@ -1,657 +0,0 @@
-/*
- * Copyright (C) 2015 Matias Bjorling <m@bjorling.me>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
- * USA.
- *
- * Implementation of a general nvm manager for Open-Channel SSDs.
- */
-
-#include "gennvm.h"
-
-static struct nvm_target *gen_find_target(struct gen_dev *gn, const char *name)
-{
- struct nvm_target *tgt;
-
- list_for_each_entry(tgt, &gn->targets, list)
- if (!strcmp(name, tgt->disk->disk_name))
- return tgt;
-
- return NULL;
-}
-
-static const struct block_device_operations gen_fops = {
- .owner = THIS_MODULE,
-};
-
-static int gen_reserve_luns(struct nvm_dev *dev, struct nvm_target *t,
- int lun_begin, int lun_end)
-{
- int i;
-
- for (i = lun_begin; i <= lun_end; i++) {
- if (test_and_set_bit(i, dev->lun_map)) {
- pr_err("nvm: lun %d already allocated\n", i);
- goto err;
- }
- }
-
- return 0;
-
-err:
- while (--i > lun_begin)
- clear_bit(i, dev->lun_map);
-
- return -EBUSY;
-}
-
-static void gen_release_luns_err(struct nvm_dev *dev, int lun_begin,
- int lun_end)
-{
- int i;
-
- for (i = lun_begin; i <= lun_end; i++)
- WARN_ON(!test_and_clear_bit(i, dev->lun_map));
-}
-
-static void gen_remove_tgt_dev(struct nvm_tgt_dev *tgt_dev)
-{
- struct nvm_dev *dev = tgt_dev->parent;
- struct gen_dev_map *dev_map = tgt_dev->map;
- int i, j;
-
- for (i = 0; i < dev_map->nr_chnls; i++) {
- struct gen_ch_map *ch_map = &dev_map->chnls[i];
- int *lun_offs = ch_map->lun_offs;
- int ch = i + ch_map->ch_off;
-
- for (j = 0; j < ch_map->nr_luns; j++) {
- int lun = j + lun_offs[j];
- int lunid = (ch * dev->geo.luns_per_chnl) + lun;
-
- WARN_ON(!test_and_clear_bit(lunid, dev->lun_map));
- }
-
- kfree(ch_map->lun_offs);
- }
-
- kfree(dev_map->chnls);
- kfree(dev_map);
- kfree(tgt_dev->luns);
- kfree(tgt_dev);
-}
-
-static struct nvm_tgt_dev *gen_create_tgt_dev(struct nvm_dev *dev,
- int lun_begin, int lun_end)
-{
- struct nvm_tgt_dev *tgt_dev = NULL;
- struct gen_dev_map *dev_rmap = dev->rmap;
- struct gen_dev_map *dev_map;
- struct ppa_addr *luns;
- int nr_luns = lun_end - lun_begin + 1;
- int luns_left = nr_luns;
- int nr_chnls = nr_luns / dev->geo.luns_per_chnl;
- int nr_chnls_mod = nr_luns % dev->geo.luns_per_chnl;
- int bch = lun_begin / dev->geo.luns_per_chnl;
- int blun = lun_begin % dev->geo.luns_per_chnl;
- int lunid = 0;
- int lun_balanced = 1;
- int prev_nr_luns;
- int i, j;
-
- nr_chnls = nr_luns / dev->geo.luns_per_chnl;
- nr_chnls = (nr_chnls_mod == 0) ? nr_chnls : nr_chnls + 1;
-
- dev_map = kmalloc(sizeof(struct gen_dev_map), GFP_KERNEL);
- if (!dev_map)
- goto err_dev;
-
- dev_map->chnls = kcalloc(nr_chnls, sizeof(struct gen_ch_map),
- GFP_KERNEL);
- if (!dev_map->chnls)
- goto err_chnls;
-
- luns = kcalloc(nr_luns, sizeof(struct ppa_addr), GFP_KERNEL);
- if (!luns)
- goto err_luns;
-
- prev_nr_luns = (luns_left > dev->geo.luns_per_chnl) ?
- dev->geo.luns_per_chnl : luns_left;
- for (i = 0; i < nr_chnls; i++) {
- struct gen_ch_map *ch_rmap = &dev_rmap->chnls[i + bch];
- int *lun_roffs = ch_rmap->lun_offs;
- struct gen_ch_map *ch_map = &dev_map->chnls[i];
- int *lun_offs;
- int luns_in_chnl = (luns_left > dev->geo.luns_per_chnl) ?
- dev->geo.luns_per_chnl : luns_left;
-
- if (lun_balanced && prev_nr_luns != luns_in_chnl)
- lun_balanced = 0;
-
- ch_map->ch_off = ch_rmap->ch_off = bch;
- ch_map->nr_luns = luns_in_chnl;
-
- lun_offs = kcalloc(luns_in_chnl, sizeof(int), GFP_KERNEL);
- if (!lun_offs)
- goto err_ch;
-
- for (j = 0; j < luns_in_chnl; j++) {
- luns[lunid].ppa = 0;
- luns[lunid].g.ch = i;
- luns[lunid++].g.lun = j;
-
- lun_offs[j] = blun;
- lun_roffs[j + blun] = blun;
- }
-
- ch_map->lun_offs = lun_offs;
-
- /* when starting a new channel, lun offset is reset */
- blun = 0;
- luns_left -= luns_in_chnl;
- }
-
- dev_map->nr_chnls = nr_chnls;
-
- tgt_dev = kmalloc(sizeof(struct nvm_tgt_dev), GFP_KERNEL);
- if (!tgt_dev)
- goto err_ch;
-
- memcpy(&tgt_dev->geo, &dev->geo, sizeof(struct nvm_geo));
- /* Target device only owns a portion of the physical device */
- tgt_dev->geo.nr_chnls = nr_chnls;
- tgt_dev->geo.nr_luns = nr_luns;
- tgt_dev->geo.luns_per_chnl = (lun_balanced) ? prev_nr_luns : -1;
- tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
- tgt_dev->q = dev->q;
- tgt_dev->map = dev_map;
- tgt_dev->luns = luns;
- memcpy(&tgt_dev->identity, &dev->identity, sizeof(struct nvm_id));
-
- tgt_dev->parent = dev;
-
- return tgt_dev;
-err_ch:
- while (--i > 0)
- kfree(dev_map->chnls[i].lun_offs);
- kfree(luns);
-err_luns:
- kfree(dev_map->chnls);
-err_chnls:
- kfree(dev_map);
-err_dev:
- return tgt_dev;
-}
-
-static int gen_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
-{
- struct gen_dev *gn = dev->mp;
- struct nvm_ioctl_create_simple *s = &create->conf.s;
- struct request_queue *tqueue;
- struct gendisk *tdisk;
- struct nvm_tgt_type *tt;
- struct nvm_target *t;
- struct nvm_tgt_dev *tgt_dev;
- void *targetdata;
-
- tt = nvm_find_target_type(create->tgttype, 1);
- if (!tt) {
- pr_err("nvm: target type %s not found\n", create->tgttype);
- return -EINVAL;
- }
-
- mutex_lock(&gn->lock);
- t = gen_find_target(gn, create->tgtname);
- if (t) {
- pr_err("nvm: target name already exists.\n");
- mutex_unlock(&gn->lock);
- return -EINVAL;
- }
- mutex_unlock(&gn->lock);
-
- t = kmalloc(sizeof(struct nvm_target), GFP_KERNEL);
- if (!t)
- return -ENOMEM;
-
- if (gen_reserve_luns(dev, t, s->lun_begin, s->lun_end))
- goto err_t;
-
- tgt_dev = gen_create_tgt_dev(dev, s->lun_begin, s->lun_end);
- if (!tgt_dev) {
- pr_err("nvm: could not create target device\n");
- goto err_reserve;
- }
-
- tqueue = blk_alloc_queue_node(GFP_KERNEL, dev->q->node);
- if (!tqueue)
- goto err_dev;
- blk_queue_make_request(tqueue, tt->make_rq);
-
- tdisk = alloc_disk(0);
- if (!tdisk)
- goto err_queue;
-
- sprintf(tdisk->disk_name, "%s", create->tgtname);
- tdisk->flags = GENHD_FL_EXT_DEVT;
- tdisk->major = 0;
- tdisk->first_minor = 0;
- tdisk->fops = &gen_fops;
- tdisk->queue = tqueue;
-
- targetdata = tt->init(tgt_dev, tdisk);
- if (IS_ERR(targetdata))
- goto err_init;
-
- tdisk->private_data = targetdata;
- tqueue->queuedata = targetdata;
-
- blk_queue_max_hw_sectors(tqueue, 8 * dev->ops->max_phys_sect);
-
- set_capacity(tdisk, tt->capacity(targetdata));
- add_disk(tdisk);
-
- t->type = tt;
- t->disk = tdisk;
- t->dev = tgt_dev;
-
- mutex_lock(&gn->lock);
- list_add_tail(&t->list, &gn->targets);
- mutex_unlock(&gn->lock);
-
- return 0;
-err_init:
- put_disk(tdisk);
-err_queue:
- blk_cleanup_queue(tqueue);
-err_dev:
- kfree(tgt_dev);
-err_reserve:
- gen_release_luns_err(dev, s->lun_begin, s->lun_end);
-err_t:
- kfree(t);
- return -ENOMEM;
-}
-
-static void __gen_remove_target(struct nvm_target *t)
-{
- struct nvm_tgt_type *tt = t->type;
- struct gendisk *tdisk = t->disk;
- struct request_queue *q = tdisk->queue;
-
- del_gendisk(tdisk);
- blk_cleanup_queue(q);
-
- if (tt->exit)
- tt->exit(tdisk->private_data);
-
- gen_remove_tgt_dev(t->dev);
- put_disk(tdisk);
-
- list_del(&t->list);
- kfree(t);
-}
-
-/**
- * gen_remove_tgt - Removes a target from the media manager
- * @dev: device
- * @remove: ioctl structure with target name to remove.
- *
- * Returns:
- * 0: on success
- * 1: on not found
- * <0: on error
- */
-static int gen_remove_tgt(struct nvm_dev *dev, struct nvm_ioctl_remove *remove)
-{
- struct gen_dev *gn = dev->mp;
- struct nvm_target *t;
-
- if (!gn)
- return 1;
-
- mutex_lock(&gn->lock);
- t = gen_find_target(gn, remove->tgtname);
- if (!t) {
- mutex_unlock(&gn->lock);
- return 1;
- }
- __gen_remove_target(t);
- mutex_unlock(&gn->lock);
-
- return 0;
-}
-
-static int gen_get_area(struct nvm_dev *dev, sector_t *lba, sector_t len)
-{
- struct nvm_geo *geo = &dev->geo;
- struct gen_dev *gn = dev->mp;
- struct gen_area *area, *prev, *next;
- sector_t begin = 0;
- sector_t max_sectors = (geo->sec_size * dev->total_secs) >> 9;
-
- if (len > max_sectors)
- return -EINVAL;
-
- area = kmalloc(sizeof(struct gen_area), GFP_KERNEL);
- if (!area)
- return -ENOMEM;
-
- prev = NULL;
-
- spin_lock(&dev->lock);
- list_for_each_entry(next, &gn->area_list, list) {
- if (begin + len > next->begin) {
- begin = next->end;
- prev = next;
- continue;
- }
- break;
- }
-
- if ((begin + len) > max_sectors) {
- spin_unlock(&dev->lock);
- kfree(area);
- return -EINVAL;
- }
-
- area->begin = *lba = begin;
- area->end = begin + len;
-
- if (prev) /* insert into sorted order */
- list_add(&area->list, &prev->list);
- else
- list_add(&area->list, &gn->area_list);
- spin_unlock(&dev->lock);
-
- return 0;
-}
-
-static void gen_put_area(struct nvm_dev *dev, sector_t begin)
-{
- struct gen_dev *gn = dev->mp;
- struct gen_area *area;
-
- spin_lock(&dev->lock);
- list_for_each_entry(area, &gn->area_list, list) {
- if (area->begin != begin)
- continue;
-
- list_del(&area->list);
- spin_unlock(&dev->lock);
- kfree(area);
- return;
- }
- spin_unlock(&dev->lock);
-}
-
-static void gen_free(struct nvm_dev *dev)
-{
- kfree(dev->mp);
- kfree(dev->rmap);
- dev->mp = NULL;
-}
-
-static int gen_register(struct nvm_dev *dev)
-{
- struct gen_dev *gn;
- struct gen_dev_map *dev_rmap;
- int i, j;
-
- if (!try_module_get(THIS_MODULE))
- return -ENODEV;
-
- gn = kzalloc(sizeof(struct gen_dev), GFP_KERNEL);
- if (!gn)
- goto err_gn;
-
- dev_rmap = kmalloc(sizeof(struct gen_dev_map), GFP_KERNEL);
- if (!dev_rmap)
- goto err_rmap;
-
- dev_rmap->chnls = kcalloc(dev->geo.nr_chnls, sizeof(struct gen_ch_map),
- GFP_KERNEL);
- if (!dev_rmap->chnls)
- goto err_chnls;
-
- for (i = 0; i < dev->geo.nr_chnls; i++) {
- struct gen_ch_map *ch_rmap;
- int *lun_roffs;
- int luns_in_chnl = dev->geo.luns_per_chnl;
-
- ch_rmap = &dev_rmap->chnls[i];
-
- ch_rmap->ch_off = -1;
- ch_rmap->nr_luns = luns_in_chnl;
-
- lun_roffs = kcalloc(luns_in_chnl, sizeof(int), GFP_KERNEL);
- if (!lun_roffs)
- goto err_ch;
-
- for (j = 0; j < luns_in_chnl; j++)
- lun_roffs[j] = -1;
-
- ch_rmap->lun_offs = lun_roffs;
- }
-
- gn->dev = dev;
- gn->nr_luns = dev->geo.nr_luns;
- INIT_LIST_HEAD(&gn->area_list);
- mutex_init(&gn->lock);
- INIT_LIST_HEAD(&gn->targets);
- dev->mp = gn;
- dev->rmap = dev_rmap;
-
- return 1;
-err_ch:
- while (--i >= 0)
- kfree(dev_rmap->chnls[i].lun_offs);
-err_chnls:
- kfree(dev_rmap);
-err_rmap:
- gen_free(dev);
-err_gn:
- module_put(THIS_MODULE);
- return -ENOMEM;
-}
-
-static void gen_unregister(struct nvm_dev *dev)
-{
- struct gen_dev *gn = dev->mp;
- struct nvm_target *t, *tmp;
-
- mutex_lock(&gn->lock);
- list_for_each_entry_safe(t, tmp, &gn->targets, list) {
- if (t->dev->parent != dev)
- continue;
- __gen_remove_target(t);
- }
- mutex_unlock(&gn->lock);
-
- gen_free(dev);
- module_put(THIS_MODULE);
-}
-
-static int gen_map_to_dev(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
-{
- struct gen_dev_map *dev_map = tgt_dev->map;
- struct gen_ch_map *ch_map = &dev_map->chnls[p->g.ch];
- int lun_off = ch_map->lun_offs[p->g.lun];
- struct nvm_dev *dev = tgt_dev->parent;
- struct gen_dev_map *dev_rmap = dev->rmap;
- struct gen_ch_map *ch_rmap;
- int lun_roff;
-
- p->g.ch += ch_map->ch_off;
- p->g.lun += lun_off;
-
- ch_rmap = &dev_rmap->chnls[p->g.ch];
- lun_roff = ch_rmap->lun_offs[p->g.lun];
-
- if (unlikely(ch_rmap->ch_off < 0 || lun_roff < 0)) {
- pr_err("nvm: corrupted device partition table\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int gen_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
-{
- struct nvm_dev *dev = tgt_dev->parent;
- struct gen_dev_map *dev_rmap = dev->rmap;
- struct gen_ch_map *ch_rmap = &dev_rmap->chnls[p->g.ch];
- int lun_roff = ch_rmap->lun_offs[p->g.lun];
-
- p->g.ch -= ch_rmap->ch_off;
- p->g.lun -= lun_roff;
-
- return 0;
-}
-
-static int gen_trans_rq(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,
- int flag)
-{
- gen_trans_fn *f;
- int i;
- int ret = 0;
-
- f = (flag == TRANS_TGT_TO_DEV) ? gen_map_to_dev : gen_map_to_tgt;
-
- if (rqd->nr_ppas == 1)
- return f(tgt_dev, &rqd->ppa_addr);
-
- for (i = 0; i < rqd->nr_ppas; i++) {
- ret = f(tgt_dev, &rqd->ppa_list[i]);
- if (ret)
- goto out;
- }
-
-out:
- return ret;
-}
-
-static void gen_end_io(struct nvm_rq *rqd)
-{
- struct nvm_tgt_dev *tgt_dev = rqd->dev;
- struct nvm_tgt_instance *ins = rqd->ins;
-
- /* Convert address space */
- if (tgt_dev)
- gen_trans_rq(tgt_dev, rqd, TRANS_DEV_TO_TGT);
-
- ins->tt->end_io(rqd);
-}
-
-static int gen_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
-{
- struct nvm_dev *dev = tgt_dev->parent;
-
- if (!dev->ops->submit_io)
- return -ENODEV;
-
- /* Convert address space */
- gen_trans_rq(tgt_dev, rqd, TRANS_TGT_TO_DEV);
- nvm_generic_to_addr_mode(dev, rqd);
-
- rqd->dev = tgt_dev;
- rqd->end_io = gen_end_io;
- return dev->ops->submit_io(dev, rqd);
-}
-
-static int gen_erase_blk(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p,
- int flags)
-{
- /* Convert address space */
- gen_map_to_dev(tgt_dev, p);
-
- return nvm_erase_ppa(tgt_dev->parent, p, 1, flags);
-}
-
-static struct ppa_addr gen_trans_ppa(struct nvm_tgt_dev *tgt_dev,
- struct ppa_addr p, int direction)
-{
- gen_trans_fn *f;
- struct ppa_addr ppa = p;
-
- f = (direction == TRANS_TGT_TO_DEV) ? gen_map_to_dev : gen_map_to_tgt;
- f(tgt_dev, &ppa);
-
- return ppa;
-}
-
-static void gen_part_to_tgt(struct nvm_dev *dev, sector_t *entries,
- int len)
-{
- struct nvm_geo *geo = &dev->geo;
- struct gen_dev_map *dev_rmap = dev->rmap;
- u64 i;
-
- for (i = 0; i < len; i++) {
- struct gen_ch_map *ch_rmap;
- int *lun_roffs;
- struct ppa_addr gaddr;
- u64 pba = le64_to_cpu(entries[i]);
- int off;
- u64 diff;
-
- if (!pba)
- continue;
-
- gaddr = linear_to_generic_addr(geo, pba);
- ch_rmap = &dev_rmap->chnls[gaddr.g.ch];
- lun_roffs = ch_rmap->lun_offs;
-
- off = gaddr.g.ch * geo->luns_per_chnl + gaddr.g.lun;
-
- diff = ((ch_rmap->ch_off * geo->luns_per_chnl) +
- (lun_roffs[gaddr.g.lun])) * geo->sec_per_lun;
-
- entries[i] -= cpu_to_le64(diff);
- }
-}
-
-static struct nvmm_type gen = {
- .name = "gennvm",
- .version = {0, 1, 0},
-
- .register_mgr = gen_register,
- .unregister_mgr = gen_unregister,
-
- .create_tgt = gen_create_tgt,
- .remove_tgt = gen_remove_tgt,
-
- .submit_io = gen_submit_io,
- .erase_blk = gen_erase_blk,
-
- .get_area = gen_get_area,
- .put_area = gen_put_area,
-
- .trans_ppa = gen_trans_ppa,
- .part_to_tgt = gen_part_to_tgt,
-};
-
-static int __init gen_module_init(void)
-{
- return nvm_register_mgr(&gen);
-}
-
-static void gen_module_exit(void)
-{
- nvm_unregister_mgr(&gen);
-}
-
-module_init(gen_module_init);
-module_exit(gen_module_exit);
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("General media manager for Open-Channel SSDs");
diff --git a/drivers/lightnvm/gennvm.h b/drivers/lightnvm/gennvm.h
deleted file mode 100644
index 6a4b3f3..0000000
--- a/drivers/lightnvm/gennvm.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright: Matias Bjorling <mb@bjorling.me>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- */
-
-#ifndef GENNVM_H_
-#define GENNVM_H_
-
-#include <linux/module.h>
-#include <linux/vmalloc.h>
-
-#include <linux/lightnvm.h>
-
-struct gen_dev {
- struct nvm_dev *dev;
-
- int nr_luns;
- struct list_head area_list;
-
- struct mutex lock;
- struct list_head targets;
-};
-
-/* Map between virtual and physical channel and lun */
-struct gen_ch_map {
- int ch_off;
- int nr_luns;
- int *lun_offs;
-};
-
-struct gen_dev_map {
- struct gen_ch_map *chnls;
- int nr_chnls;
-};
-
-struct gen_area {
- struct list_head list;
- sector_t begin;
- sector_t end; /* end is excluded */
-};
-
-static inline void *ch_map_to_lun_offs(struct gen_ch_map *ch_map)
-{
- return ch_map + 1;
-}
-
-typedef int (gen_trans_fn)(struct nvm_tgt_dev *, struct ppa_addr *);
-
-#define gen_for_each_lun(bm, lun, i) \
- for ((i) = 0, lun = &(bm)->luns[0]; \
- (i) < (bm)->nr_luns; (i)++, lun = &(bm)->luns[(i)])
-
-#endif /* GENNVM_H_ */
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 9fb7de3..e00b1d7 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -779,7 +779,7 @@ static void rrpc_end_io_write(struct rrpc *rrpc, struct rrpc_rq *rrqd,
static void rrpc_end_io(struct nvm_rq *rqd)
{
- struct rrpc *rrpc = container_of(rqd->ins, struct rrpc, instance);
+ struct rrpc *rrpc = rqd->private;
struct nvm_tgt_dev *dev = rrpc->dev;
struct rrpc_rq *rrqd = nvm_rq_to_pdu(rqd);
uint8_t npages = rqd->nr_ppas;
@@ -972,8 +972,9 @@ static int rrpc_submit_io(struct rrpc *rrpc, struct bio *bio,
bio_get(bio);
rqd->bio = bio;
- rqd->ins = &rrpc->instance;
+ rqd->private = rrpc;
rqd->nr_ppas = nr_pages;
+ rqd->end_io = rrpc_end_io;
rrq->flags = flags;
err = nvm_submit_io(dev, rqd);
@@ -1532,7 +1533,6 @@ static void *rrpc_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk)
if (!rrpc)
return ERR_PTR(-ENOMEM);
- rrpc->instance.tt = &tt_rrpc;
rrpc->dev = dev;
rrpc->disk = tdisk;
@@ -1611,7 +1611,6 @@ static struct nvm_tgt_type tt_rrpc = {
.make_rq = rrpc_make_rq,
.capacity = rrpc_capacity,
- .end_io = rrpc_end_io,
.init = rrpc_init,
.exit = rrpc_exit,
diff --git a/drivers/lightnvm/rrpc.h b/drivers/lightnvm/rrpc.h
index 94e4d73..fdb6ff9 100644
--- a/drivers/lightnvm/rrpc.h
+++ b/drivers/lightnvm/rrpc.h
@@ -102,9 +102,6 @@ struct rrpc_lun {
};
struct rrpc {
- /* instance must be kept in top to resolve rrpc in unprep */
- struct nvm_tgt_instance instance;
-
struct nvm_tgt_dev *dev;
struct gendisk *disk;
diff --git a/drivers/lightnvm/sysblk.c b/drivers/lightnvm/sysblk.c
deleted file mode 100644
index 12002bf..0000000
--- a/drivers/lightnvm/sysblk.c
+++ /dev/null
@@ -1,733 +0,0 @@
-/*
- * Copyright (C) 2015 Matias Bjorling. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
- * USA.
- *
- */
-
-#include <linux/lightnvm.h>
-
-#define MAX_SYSBLKS 3 /* remember to update mapping scheme on change */
-#define MAX_BLKS_PR_SYSBLK 2 /* 2 blks with 256 pages and 3000 erases
- * enables ~1.5M updates per sysblk unit
- */
-
-struct sysblk_scan {
- /* A row is a collection of flash blocks for a system block. */
- int nr_rows;
- int row;
- int act_blk[MAX_SYSBLKS];
-
- int nr_ppas;
- struct ppa_addr ppas[MAX_SYSBLKS * MAX_BLKS_PR_SYSBLK];/* all sysblks */
-};
-
-static inline int scan_ppa_idx(int row, int blkid)
-{
- return (row * MAX_BLKS_PR_SYSBLK) + blkid;
-}
-
-static void nvm_sysblk_to_cpu(struct nvm_sb_info *info,
- struct nvm_system_block *sb)
-{
- info->seqnr = be32_to_cpu(sb->seqnr);
- info->erase_cnt = be32_to_cpu(sb->erase_cnt);
- info->version = be16_to_cpu(sb->version);
- strncpy(info->mmtype, sb->mmtype, NVM_MMTYPE_LEN);
- info->fs_ppa.ppa = be64_to_cpu(sb->fs_ppa);
-}
-
-static void nvm_cpu_to_sysblk(struct nvm_system_block *sb,
- struct nvm_sb_info *info)
-{
- sb->magic = cpu_to_be32(NVM_SYSBLK_MAGIC);
- sb->seqnr = cpu_to_be32(info->seqnr);
- sb->erase_cnt = cpu_to_be32(info->erase_cnt);
- sb->version = cpu_to_be16(info->version);
- strncpy(sb->mmtype, info->mmtype, NVM_MMTYPE_LEN);
- sb->fs_ppa = cpu_to_be64(info->fs_ppa.ppa);
-}
-
-static int nvm_setup_sysblks(struct nvm_dev *dev, struct ppa_addr *sysblk_ppas)
-{
- struct nvm_geo *geo = &dev->geo;
- int nr_rows = min_t(int, MAX_SYSBLKS, geo->nr_chnls);
- int i;
-
- for (i = 0; i < nr_rows; i++)
- sysblk_ppas[i].ppa = 0;
-
- /* if possible, place sysblk at first channel, middle channel and last
- * channel of the device. If not, create only one or two sys blocks
- */
- switch (geo->nr_chnls) {
- case 2:
- sysblk_ppas[1].g.ch = 1;
- /* fall-through */
- case 1:
- sysblk_ppas[0].g.ch = 0;
- break;
- default:
- sysblk_ppas[0].g.ch = 0;
- sysblk_ppas[1].g.ch = geo->nr_chnls / 2;
- sysblk_ppas[2].g.ch = geo->nr_chnls - 1;
- break;
- }
-
- return nr_rows;
-}
-
-static void nvm_setup_sysblk_scan(struct nvm_dev *dev, struct sysblk_scan *s,
- struct ppa_addr *sysblk_ppas)
-{
- memset(s, 0, sizeof(struct sysblk_scan));
- s->nr_rows = nvm_setup_sysblks(dev, sysblk_ppas);
-}
-
-static int sysblk_get_free_blks(struct nvm_dev *dev, struct ppa_addr ppa,
- u8 *blks, int nr_blks,
- struct sysblk_scan *s)
-{
- struct ppa_addr *sppa;
- int i, blkid = 0;
-
- nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
- if (nr_blks < 0)
- return nr_blks;
-
- for (i = 0; i < nr_blks; i++) {
- if (blks[i] == NVM_BLK_T_HOST)
- return -EEXIST;
-
- if (blks[i] != NVM_BLK_T_FREE)
- continue;
-
- sppa = &s->ppas[scan_ppa_idx(s->row, blkid)];
- sppa->g.ch = ppa.g.ch;
- sppa->g.lun = ppa.g.lun;
- sppa->g.blk = i;
- s->nr_ppas++;
- blkid++;
-
- pr_debug("nvm: use (%u %u %u) as sysblk\n",
- sppa->g.ch, sppa->g.lun, sppa->g.blk);
- if (blkid > MAX_BLKS_PR_SYSBLK - 1)
- return 0;
- }
-
- pr_err("nvm: sysblk failed get sysblk\n");
- return -EINVAL;
-}
-
-static int sysblk_get_host_blks(struct nvm_dev *dev, struct ppa_addr ppa,
- u8 *blks, int nr_blks,
- struct sysblk_scan *s)
-{
- int i, nr_sysblk = 0;
-
- nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
- if (nr_blks < 0)
- return nr_blks;
-
- for (i = 0; i < nr_blks; i++) {
- if (blks[i] != NVM_BLK_T_HOST)
- continue;
-
- if (s->nr_ppas == MAX_BLKS_PR_SYSBLK * MAX_SYSBLKS) {
- pr_err("nvm: too many host blks\n");
- return -EINVAL;
- }
-
- ppa.g.blk = i;
-
- s->ppas[scan_ppa_idx(s->row, nr_sysblk)] = ppa;
- s->nr_ppas++;
- nr_sysblk++;
- }
-
- return 0;
-}
-
-static int nvm_get_all_sysblks(struct nvm_dev *dev, struct sysblk_scan *s,
- struct ppa_addr *ppas, int get_free)
-{
- struct nvm_geo *geo = &dev->geo;
- int i, nr_blks, ret = 0;
- u8 *blks;
-
- s->nr_ppas = 0;
- nr_blks = geo->blks_per_lun * geo->plane_mode;
-
- blks = kmalloc(nr_blks, GFP_KERNEL);
- if (!blks)
- return -ENOMEM;
-
- for (i = 0; i < s->nr_rows; i++) {
- s->row = i;
-
- ret = nvm_get_bb_tbl(dev, ppas[i], blks);
- if (ret) {
- pr_err("nvm: failed bb tbl for ppa (%u %u)\n",
- ppas[i].g.ch,
- ppas[i].g.blk);
- goto err_get;
- }
-
- if (get_free)
- ret = sysblk_get_free_blks(dev, ppas[i], blks, nr_blks,
- s);
- else
- ret = sysblk_get_host_blks(dev, ppas[i], blks, nr_blks,
- s);
-
- if (ret)
- goto err_get;
- }
-
-err_get:
- kfree(blks);
- return ret;
-}
-
-/*
- * scans a block for latest sysblk.
- * Returns:
- * 0 - newer sysblk not found. PPA is updated to latest page.
- * 1 - newer sysblk found and stored in *cur. PPA is updated to
- * next valid page.
- * <0- error.
- */
-static int nvm_scan_block(struct nvm_dev *dev, struct ppa_addr *ppa,
- struct nvm_system_block *sblk)
-{
- struct nvm_geo *geo = &dev->geo;
- struct nvm_system_block *cur;
- int pg, ret, found = 0;
-
- /* the full buffer for a flash page is allocated. Only the first of it
- * contains the system block information
- */
- cur = kmalloc(geo->pfpg_size, GFP_KERNEL);
- if (!cur)
- return -ENOMEM;
-
- /* perform linear scan through the block */
- for (pg = 0; pg < dev->lps_per_blk; pg++) {
- ppa->g.pg = ppa_to_slc(dev, pg);
-
- ret = nvm_submit_ppa(dev, ppa, 1, NVM_OP_PREAD, NVM_IO_SLC_MODE,
- cur, geo->pfpg_size);
- if (ret) {
- if (ret == NVM_RSP_ERR_EMPTYPAGE) {
- pr_debug("nvm: sysblk scan empty ppa (%u %u %u %u)\n",
- ppa->g.ch,
- ppa->g.lun,
- ppa->g.blk,
- ppa->g.pg);
- break;
- }
- pr_err("nvm: read failed (%x) for ppa (%u %u %u %u)",
- ret,
- ppa->g.ch,
- ppa->g.lun,
- ppa->g.blk,
- ppa->g.pg);
- break; /* if we can't read a page, continue to the
- * next blk
- */
- }
-
- if (be32_to_cpu(cur->magic) != NVM_SYSBLK_MAGIC) {
- pr_debug("nvm: scan break for ppa (%u %u %u %u)\n",
- ppa->g.ch,
- ppa->g.lun,
- ppa->g.blk,
- ppa->g.pg);
- break; /* last valid page already found */
- }
-
- if (be32_to_cpu(cur->seqnr) < be32_to_cpu(sblk->seqnr))
- continue;
-
- memcpy(sblk, cur, sizeof(struct nvm_system_block));
- found = 1;
- }
-
- kfree(cur);
-
- return found;
-}
-
-static int nvm_sysblk_set_bb_tbl(struct nvm_dev *dev, struct sysblk_scan *s,
- int type)
-{
- return nvm_set_bb_tbl(dev, s->ppas, s->nr_ppas, type);
-}
-
-static int nvm_write_and_verify(struct nvm_dev *dev, struct nvm_sb_info *info,
- struct sysblk_scan *s)
-{
- struct nvm_geo *geo = &dev->geo;
- struct nvm_system_block nvmsb;
- void *buf;
- int i, sect, ret = 0;
- struct ppa_addr *ppas;
-
- nvm_cpu_to_sysblk(&nvmsb, info);
-
- buf = kzalloc(geo->pfpg_size, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
- memcpy(buf, &nvmsb, sizeof(struct nvm_system_block));
-
- ppas = kcalloc(geo->sec_per_pg, sizeof(struct ppa_addr), GFP_KERNEL);
- if (!ppas) {
- ret = -ENOMEM;
- goto err;
- }
-
- /* Write and verify */
- for (i = 0; i < s->nr_rows; i++) {
- ppas[0] = s->ppas[scan_ppa_idx(i, s->act_blk[i])];
-
- pr_debug("nvm: writing sysblk to ppa (%u %u %u %u)\n",
- ppas[0].g.ch,
- ppas[0].g.lun,
- ppas[0].g.blk,
- ppas[0].g.pg);
-
- /* Expand to all sectors within a flash page */
- if (geo->sec_per_pg > 1) {
- for (sect = 1; sect < geo->sec_per_pg; sect++) {
- ppas[sect].ppa = ppas[0].ppa;
- ppas[sect].g.sec = sect;
- }
- }
-
- ret = nvm_submit_ppa(dev, ppas, geo->sec_per_pg, NVM_OP_PWRITE,
- NVM_IO_SLC_MODE, buf, geo->pfpg_size);
- if (ret) {
- pr_err("nvm: sysblk failed program (%u %u %u)\n",
- ppas[0].g.ch,
- ppas[0].g.lun,
- ppas[0].g.blk);
- break;
- }
-
- ret = nvm_submit_ppa(dev, ppas, geo->sec_per_pg, NVM_OP_PREAD,
- NVM_IO_SLC_MODE, buf, geo->pfpg_size);
- if (ret) {
- pr_err("nvm: sysblk failed read (%u %u %u)\n",
- ppas[0].g.ch,
- ppas[0].g.lun,
- ppas[0].g.blk);
- break;
- }
-
- if (memcmp(buf, &nvmsb, sizeof(struct nvm_system_block))) {
- pr_err("nvm: sysblk failed verify (%u %u %u)\n",
- ppas[0].g.ch,
- ppas[0].g.lun,
- ppas[0].g.blk);
- ret = -EINVAL;
- break;
- }
- }
-
- kfree(ppas);
-err:
- kfree(buf);
-
- return ret;
-}
-
-static int nvm_prepare_new_sysblks(struct nvm_dev *dev, struct sysblk_scan *s)
-{
- int i, ret;
- unsigned long nxt_blk;
- struct ppa_addr *ppa;
-
- for (i = 0; i < s->nr_rows; i++) {
- nxt_blk = (s->act_blk[i] + 1) % MAX_BLKS_PR_SYSBLK;
- ppa = &s->ppas[scan_ppa_idx(i, nxt_blk)];
- ppa->g.pg = ppa_to_slc(dev, 0);
-
- ret = nvm_erase_ppa(dev, ppa, 1, 0);
- if (ret)
- return ret;
-
- s->act_blk[i] = nxt_blk;
- }
-
- return 0;
-}
-
-int nvm_get_sysblock(struct nvm_dev *dev, struct nvm_sb_info *info)
-{
- struct ppa_addr sysblk_ppas[MAX_SYSBLKS];
- struct sysblk_scan s;
- struct nvm_system_block *cur;
- int i, j, found = 0;
- int ret = -ENOMEM;
-
- /*
- * 1. setup sysblk locations
- * 2. get bad block list
- * 3. filter on host-specific (type 3)
- * 4. iterate through all and find the highest seq nr.
- * 5. return superblock information
- */
-
- if (!dev->ops->get_bb_tbl)
- return -EINVAL;
-
- nvm_setup_sysblk_scan(dev, &s, sysblk_ppas);
-
- mutex_lock(&dev->mlock);
- ret = nvm_get_all_sysblks(dev, &s, sysblk_ppas, 0);
- if (ret)
- goto err_sysblk;
-
- /* no sysblocks initialized */
- if (!s.nr_ppas)
- goto err_sysblk;
-
- cur = kzalloc(sizeof(struct nvm_system_block), GFP_KERNEL);
- if (!cur)
- goto err_sysblk;
-
- /* find the latest block across all sysblocks */
- for (i = 0; i < s.nr_rows; i++) {
- for (j = 0; j < MAX_BLKS_PR_SYSBLK; j++) {
- struct ppa_addr ppa = s.ppas[scan_ppa_idx(i, j)];
-
- ret = nvm_scan_block(dev, &ppa, cur);
- if (ret > 0)
- found = 1;
- else if (ret < 0)
- break;
- }
- }
-
- nvm_sysblk_to_cpu(info, cur);
-
- kfree(cur);
-err_sysblk:
- mutex_unlock(&dev->mlock);
-
- if (found)
- return 1;
- return ret;
-}
-
-int nvm_update_sysblock(struct nvm_dev *dev, struct nvm_sb_info *new)
-{
- /* 1. for each latest superblock
- * 2. if room
- * a. write new flash page entry with the updated information
- * 3. if no room
- * a. find next available block on lun (linear search)
- * if none, continue to next lun
- * if none at all, report error. also report that it wasn't
- * possible to write to all superblocks.
- * c. write data to block.
- */
- struct ppa_addr sysblk_ppas[MAX_SYSBLKS];
- struct sysblk_scan s;
- struct nvm_system_block *cur;
- int i, j, ppaidx, found = 0;
- int ret = -ENOMEM;
-
- if (!dev->ops->get_bb_tbl)
- return -EINVAL;
-
- nvm_setup_sysblk_scan(dev, &s, sysblk_ppas);
-
- mutex_lock(&dev->mlock);
- ret = nvm_get_all_sysblks(dev, &s, sysblk_ppas, 0);
- if (ret)
- goto err_sysblk;
-
- cur = kzalloc(sizeof(struct nvm_system_block), GFP_KERNEL);
- if (!cur)
- goto err_sysblk;
-
- /* Get the latest sysblk for each sysblk row */
- for (i = 0; i < s.nr_rows; i++) {
- found = 0;
- for (j = 0; j < MAX_BLKS_PR_SYSBLK; j++) {
- ppaidx = scan_ppa_idx(i, j);
- ret = nvm_scan_block(dev, &s.ppas[ppaidx], cur);
- if (ret > 0) {
- s.act_blk[i] = j;
- found = 1;
- } else if (ret < 0)
- break;
- }
- }
-
- if (!found) {
- pr_err("nvm: no valid sysblks found to update\n");
- ret = -EINVAL;
- goto err_cur;
- }
-
- /*
- * All sysblocks found. Check that they have same page id in their flash
- * blocks
- */
- for (i = 1; i < s.nr_rows; i++) {
- struct ppa_addr l = s.ppas[scan_ppa_idx(0, s.act_blk[0])];
- struct ppa_addr r = s.ppas[scan_ppa_idx(i, s.act_blk[i])];
-
- if (l.g.pg != r.g.pg) {
- pr_err("nvm: sysblks not on same page. Previous update failed.\n");
- ret = -EINVAL;
- goto err_cur;
- }
- }
-
- /*
- * Check that there haven't been another update to the seqnr since we
- * began
- */
- if ((new->seqnr - 1) != be32_to_cpu(cur->seqnr)) {
- pr_err("nvm: seq is not sequential\n");
- ret = -EINVAL;
- goto err_cur;
- }
-
- /*
- * When all pages in a block has been written, a new block is selected
- * and writing is performed on the new block.
- */
- if (s.ppas[scan_ppa_idx(0, s.act_blk[0])].g.pg ==
- dev->lps_per_blk - 1) {
- ret = nvm_prepare_new_sysblks(dev, &s);
- if (ret)
- goto err_cur;
- }
-
- ret = nvm_write_and_verify(dev, new, &s);
-err_cur:
- kfree(cur);
-err_sysblk:
- mutex_unlock(&dev->mlock);
-
- return ret;
-}
-
-int nvm_init_sysblock(struct nvm_dev *dev, struct nvm_sb_info *info)
-{
- struct nvm_geo *geo = &dev->geo;
- struct ppa_addr sysblk_ppas[MAX_SYSBLKS];
- struct sysblk_scan s;
- int ret;
-
- /*
- * 1. select master blocks and select first available blks
- * 2. get bad block list
- * 3. mark MAX_SYSBLKS block as host-based device allocated.
- * 4. write and verify data to block
- */
-
- if (!dev->ops->get_bb_tbl || !dev->ops->set_bb_tbl)
- return -EINVAL;
-
- if (!(geo->mccap & NVM_ID_CAP_SLC) || !dev->lps_per_blk) {
- pr_err("nvm: memory does not support SLC access\n");
- return -EINVAL;
- }
-
- /* Index all sysblocks and mark them as host-driven */
- nvm_setup_sysblk_scan(dev, &s, sysblk_ppas);
-
- mutex_lock(&dev->mlock);
- ret = nvm_get_all_sysblks(dev, &s, sysblk_ppas, 1);
- if (ret)
- goto err_mark;
-
- ret = nvm_sysblk_set_bb_tbl(dev, &s, NVM_BLK_T_HOST);
- if (ret)
- goto err_mark;
-
- /* Write to the first block of each row */
- ret = nvm_write_and_verify(dev, info, &s);
-err_mark:
- mutex_unlock(&dev->mlock);
- return ret;
-}
-
-static int factory_nblks(int nblks)
-{
- /* Round up to nearest BITS_PER_LONG */
- return (nblks + (BITS_PER_LONG - 1)) & ~(BITS_PER_LONG - 1);
-}
-
-static unsigned int factory_blk_offset(struct nvm_geo *geo, struct ppa_addr ppa)
-{
- int nblks = factory_nblks(geo->blks_per_lun);
-
- return ((ppa.g.ch * geo->luns_per_chnl * nblks) + (ppa.g.lun * nblks)) /
- BITS_PER_LONG;
-}
-
-static int nvm_factory_blks(struct nvm_dev *dev, struct ppa_addr ppa,
- u8 *blks, int nr_blks,
- unsigned long *blk_bitmap, int flags)
-{
- int i, lunoff;
-
- nr_blks = nvm_bb_tbl_fold(dev, blks, nr_blks);
- if (nr_blks < 0)
- return nr_blks;
-
- lunoff = factory_blk_offset(&dev->geo, ppa);
-
- /* non-set bits correspond to the block must be erased */
- for (i = 0; i < nr_blks; i++) {
- switch (blks[i]) {
- case NVM_BLK_T_FREE:
- if (flags & NVM_FACTORY_ERASE_ONLY_USER)
- set_bit(i, &blk_bitmap[lunoff]);
- break;
- case NVM_BLK_T_HOST:
- if (!(flags & NVM_FACTORY_RESET_HOST_BLKS))
- set_bit(i, &blk_bitmap[lunoff]);
- break;
- case NVM_BLK_T_GRWN_BAD:
- if (!(flags & NVM_FACTORY_RESET_GRWN_BBLKS))
- set_bit(i, &blk_bitmap[lunoff]);
- break;
- default:
- set_bit(i, &blk_bitmap[lunoff]);
- break;
- }
- }
-
- return 0;
-}
-
-static int nvm_fact_get_blks(struct nvm_dev *dev, struct ppa_addr *erase_list,
- int max_ppas, unsigned long *blk_bitmap)
-{
- struct nvm_geo *geo = &dev->geo;
- struct ppa_addr ppa;
- int ch, lun, blkid, idx, done = 0, ppa_cnt = 0;
- unsigned long *offset;
-
- while (!done) {
- done = 1;
- nvm_for_each_lun_ppa(geo, ppa, ch, lun) {
- idx = factory_blk_offset(geo, ppa);
- offset = &blk_bitmap[idx];
-
- blkid = find_first_zero_bit(offset, geo->blks_per_lun);
- if (blkid >= geo->blks_per_lun)
- continue;
- set_bit(blkid, offset);
-
- ppa.g.blk = blkid;
- pr_debug("nvm: erase ppa (%u %u %u)\n",
- ppa.g.ch,
- ppa.g.lun,
- ppa.g.blk);
-
- erase_list[ppa_cnt] = ppa;
- ppa_cnt++;
- done = 0;
-
- if (ppa_cnt == max_ppas)
- return ppa_cnt;
- }
- }
-
- return ppa_cnt;
-}
-
-static int nvm_fact_select_blks(struct nvm_dev *dev, unsigned long *blk_bitmap,
- int flags)
-{
- struct nvm_geo *geo = &dev->geo;
- struct ppa_addr ppa;
- int ch, lun, nr_blks, ret = 0;
- u8 *blks;
-
- nr_blks = geo->blks_per_lun * geo->plane_mode;
- blks = kmalloc(nr_blks, GFP_KERNEL);
- if (!blks)
- return -ENOMEM;
-
- nvm_for_each_lun_ppa(geo, ppa, ch, lun) {
- ret = nvm_get_bb_tbl(dev, ppa, blks);
- if (ret)
- pr_err("nvm: failed bb tbl for ch%u lun%u\n",
- ppa.g.ch, ppa.g.blk);
-
- ret = nvm_factory_blks(dev, ppa, blks, nr_blks, blk_bitmap,
- flags);
- if (ret)
- break;
- }
-
- kfree(blks);
- return ret;
-}
-
-int nvm_dev_factory(struct nvm_dev *dev, int flags)
-{
- struct nvm_geo *geo = &dev->geo;
- struct ppa_addr *ppas;
- int ppa_cnt, ret = -ENOMEM;
- int max_ppas = dev->ops->max_phys_sect / geo->nr_planes;
- struct ppa_addr sysblk_ppas[MAX_SYSBLKS];
- struct sysblk_scan s;
- unsigned long *blk_bitmap;
-
- blk_bitmap = kzalloc(factory_nblks(geo->blks_per_lun) * geo->nr_luns,
- GFP_KERNEL);
- if (!blk_bitmap)
- return ret;
-
- ppas = kcalloc(max_ppas, sizeof(struct ppa_addr), GFP_KERNEL);
- if (!ppas)
- goto err_blks;
-
- /* create list of blks to be erased */
- ret = nvm_fact_select_blks(dev, blk_bitmap, flags);
- if (ret)
- goto err_ppas;
-
- /* continue to erase until list of blks until empty */
- while ((ppa_cnt =
- nvm_fact_get_blks(dev, ppas, max_ppas, blk_bitmap)) > 0)
- nvm_erase_ppa(dev, ppas, ppa_cnt, 0);
-
- /* mark host reserved blocks free */
- if (flags & NVM_FACTORY_RESET_HOST_BLKS) {
- nvm_setup_sysblk_scan(dev, &s, sysblk_ppas);
- mutex_lock(&dev->mlock);
- ret = nvm_get_all_sysblks(dev, &s, sysblk_ppas, 0);
- if (!ret)
- ret = nvm_sysblk_set_bb_tbl(dev, &s, NVM_BLK_T_FREE);
- mutex_unlock(&dev->mlock);
- }
-err_ppas:
- kfree(ppas);
-err_blks:
- kfree(blk_bitmap);
- return ret;
-}
-EXPORT_SYMBOL(nvm_dev_factory);
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 76d2087..709c9cc 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -666,7 +666,7 @@ static inline struct search *search_alloc(struct bio *bio,
s->iop.write_prio = 0;
s->iop.error = 0;
s->iop.flags = 0;
- s->iop.flush_journal = (bio->bi_opf & (REQ_PREFLUSH|REQ_FUA)) != 0;
+ s->iop.flush_journal = op_is_flush(bio->bi_opf);
s->iop.wq = bcache_wq;
return s;
@@ -1009,7 +1009,7 @@ static int cached_dev_congested(void *data, int bits)
struct request_queue *q = bdev_get_queue(dc->bdev);
int ret = 0;
- if (bdi_congested(&q->backing_dev_info, bits))
+ if (bdi_congested(q->backing_dev_info, bits))
return 1;
if (cached_dev_get(dc)) {
@@ -1018,7 +1018,7 @@ static int cached_dev_congested(void *data, int bits)
for_each_cache(ca, d->c, i) {
q = bdev_get_queue(ca->bdev);
- ret |= bdi_congested(&q->backing_dev_info, bits);
+ ret |= bdi_congested(q->backing_dev_info, bits);
}
cached_dev_put(dc);
@@ -1032,7 +1032,7 @@ void bch_cached_dev_request_init(struct cached_dev *dc)
struct gendisk *g = dc->disk.disk;
g->queue->make_request_fn = cached_dev_make_request;
- g->queue->backing_dev_info.congested_fn = cached_dev_congested;
+ g->queue->backing_dev_info->congested_fn = cached_dev_congested;
dc->disk.cache_miss = cached_dev_cache_miss;
dc->disk.ioctl = cached_dev_ioctl;
}
@@ -1125,7 +1125,7 @@ static int flash_dev_congested(void *data, int bits)
for_each_cache(ca, d->c, i) {
q = bdev_get_queue(ca->bdev);
- ret |= bdi_congested(&q->backing_dev_info, bits);
+ ret |= bdi_congested(q->backing_dev_info, bits);
}
return ret;
@@ -1136,7 +1136,7 @@ void bch_flash_dev_request_init(struct bcache_device *d)
struct gendisk *g = d->disk;
g->queue->make_request_fn = flash_dev_make_request;
- g->queue->backing_dev_info.congested_fn = flash_dev_congested;
+ g->queue->backing_dev_info->congested_fn = flash_dev_congested;
d->cache_miss = flash_dev_cache_miss;
d->ioctl = flash_dev_ioctl;
}
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 3a19cbc..85e3f21 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -807,7 +807,7 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size,
blk_queue_make_request(q, NULL);
d->disk->queue = q;
q->queuedata = d;
- q->backing_dev_info.congested_data = d;
+ q->backing_dev_info->congested_data = d;
q->limits.max_hw_sectors = UINT_MAX;
q->limits.max_sectors = UINT_MAX;
q->limits.max_segment_size = UINT_MAX;
@@ -1132,9 +1132,9 @@ static int cached_dev_init(struct cached_dev *dc, unsigned block_size)
set_capacity(dc->disk.disk,
dc->bdev->bd_part->nr_sects - dc->sb.data_offset);
- dc->disk.disk->queue->backing_dev_info.ra_pages =
- max(dc->disk.disk->queue->backing_dev_info.ra_pages,
- q->backing_dev_info.ra_pages);
+ dc->disk.disk->queue->backing_dev_info->ra_pages =
+ max(dc->disk.disk->queue->backing_dev_info->ra_pages,
+ q->backing_dev_info->ra_pages);
bch_cached_dev_request_init(dc);
bch_cached_dev_writeback_init(dc);
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index e04c61e..894bc14 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -787,8 +787,7 @@ static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio)
struct per_bio_data *pb = get_per_bio_data(bio, pb_data_size);
spin_lock_irqsave(&cache->lock, flags);
- if (cache->need_tick_bio &&
- !(bio->bi_opf & (REQ_FUA | REQ_PREFLUSH)) &&
+ if (cache->need_tick_bio && !op_is_flush(bio->bi_opf) &&
bio_op(bio) != REQ_OP_DISCARD) {
pb->tick = true;
cache->need_tick_bio = false;
@@ -828,11 +827,6 @@ static dm_oblock_t get_bio_block(struct cache *cache, struct bio *bio)
return to_oblock(block_nr);
}
-static int bio_triggers_commit(struct cache *cache, struct bio *bio)
-{
- return bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
-}
-
/*
* You must increment the deferred set whilst the prison cell is held. To
* encourage this, we ask for 'cell' to be passed in.
@@ -884,7 +878,7 @@ static void issue(struct cache *cache, struct bio *bio)
{
unsigned long flags;
- if (!bio_triggers_commit(cache, bio)) {
+ if (!op_is_flush(bio->bi_opf)) {
accounted_request(cache, bio);
return;
}
@@ -1069,8 +1063,7 @@ static void dec_io_migrations(struct cache *cache)
static bool discard_or_flush(struct bio *bio)
{
- return bio_op(bio) == REQ_OP_DISCARD ||
- bio->bi_opf & (REQ_PREFLUSH | REQ_FUA);
+ return bio_op(bio) == REQ_OP_DISCARD || op_is_flush(bio->bi_opf);
}
static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell)
@@ -2291,7 +2284,7 @@ static void do_waker(struct work_struct *ws)
static int is_congested(struct dm_dev *dev, int bdi_bits)
{
struct request_queue *q = bdev_get_queue(dev->bdev);
- return bdi_congested(&q->backing_dev_info, bdi_bits);
+ return bdi_congested(q->backing_dev_info, bdi_bits);
}
static int cache_is_congested(struct dm_target_callbacks *cb, int bdi_bits)
diff --git a/drivers/md/dm-core.h b/drivers/md/dm-core.h
index 40ceba1..136fda3 100644
--- a/drivers/md/dm-core.h
+++ b/drivers/md/dm-core.h
@@ -92,7 +92,6 @@ struct mapped_device {
* io objects are allocated from here.
*/
mempool_t *io_pool;
- mempool_t *rq_pool;
struct bio_set *bs;
diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c
index bf2b267..9fab33b 100644
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c
@@ -1379,7 +1379,7 @@ static void stop_worker(struct era *era)
static int dev_is_congested(struct dm_dev *dev, int bdi_bits)
{
struct request_queue *q = bdev_get_queue(dev->bdev);
- return bdi_congested(&q->backing_dev_info, bdi_bits);
+ return bdi_congested(q->backing_dev_info, bdi_bits);
}
static int era_is_congested(struct dm_target_callbacks *cb, int bdi_bits)
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 3570bcb..7f223db 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -92,12 +92,6 @@ struct multipath {
unsigned queue_mode;
- /*
- * We must use a mempool of dm_mpath_io structs so that we
- * can resubmit bios on error.
- */
- mempool_t *mpio_pool;
-
struct mutex work_mutex;
struct work_struct trigger_event;
@@ -115,8 +109,6 @@ struct dm_mpath_io {
typedef int (*action_fn) (struct pgpath *pgpath);
-static struct kmem_cache *_mpio_cache;
-
static struct workqueue_struct *kmultipathd, *kmpath_handlerd;
static void trigger_event(struct work_struct *work);
static void activate_path(struct work_struct *work);
@@ -209,7 +201,6 @@ static struct multipath *alloc_multipath(struct dm_target *ti)
init_waitqueue_head(&m->pg_init_wait);
mutex_init(&m->work_mutex);
- m->mpio_pool = NULL;
m->queue_mode = DM_TYPE_NONE;
m->ti = ti;
@@ -229,16 +220,7 @@ static int alloc_multipath_stage2(struct dm_target *ti, struct multipath *m)
m->queue_mode = DM_TYPE_MQ_REQUEST_BASED;
else
m->queue_mode = DM_TYPE_REQUEST_BASED;
- }
-
- if (m->queue_mode == DM_TYPE_REQUEST_BASED) {
- unsigned min_ios = dm_get_reserved_rq_based_ios();
-
- m->mpio_pool = mempool_create_slab_pool(min_ios, _mpio_cache);
- if (!m->mpio_pool)
- return -ENOMEM;
- }
- else if (m->queue_mode == DM_TYPE_BIO_BASED) {
+ } else if (m->queue_mode == DM_TYPE_BIO_BASED) {
INIT_WORK(&m->process_queued_bios, process_queued_bios);
/*
* bio-based doesn't support any direct scsi_dh management;
@@ -263,7 +245,6 @@ static void free_multipath(struct multipath *m)
kfree(m->hw_handler_name);
kfree(m->hw_handler_params);
- mempool_destroy(m->mpio_pool);
kfree(m);
}
@@ -272,38 +253,6 @@ static struct dm_mpath_io *get_mpio(union map_info *info)
return info->ptr;
}
-static struct dm_mpath_io *set_mpio(struct multipath *m, union map_info *info)
-{
- struct dm_mpath_io *mpio;
-
- if (!m->mpio_pool) {
- /* Use blk-mq pdu memory requested via per_io_data_size */
- mpio = get_mpio(info);
- memset(mpio, 0, sizeof(*mpio));
- return mpio;
- }
-
- mpio = mempool_alloc(m->mpio_pool, GFP_ATOMIC);
- if (!mpio)
- return NULL;
-
- memset(mpio, 0, sizeof(*mpio));
- info->ptr = mpio;
-
- return mpio;
-}
-
-static void clear_request_fn_mpio(struct multipath *m, union map_info *info)
-{
- /* Only needed for non blk-mq (.request_fn) multipath */
- if (m->mpio_pool) {
- struct dm_mpath_io *mpio = info->ptr;
-
- info->ptr = NULL;
- mempool_free(mpio, m->mpio_pool);
- }
-}
-
static size_t multipath_per_bio_data_size(void)
{
return sizeof(struct dm_mpath_io) + sizeof(struct dm_bio_details);
@@ -530,16 +479,17 @@ static bool must_push_back_bio(struct multipath *m)
/*
* Map cloned requests (request-based multipath)
*/
-static int __multipath_map(struct dm_target *ti, struct request *clone,
- union map_info *map_context,
- struct request *rq, struct request **__clone)
+static int multipath_clone_and_map(struct dm_target *ti, struct request *rq,
+ union map_info *map_context,
+ struct request **__clone)
{
struct multipath *m = ti->private;
int r = DM_MAPIO_REQUEUE;
- size_t nr_bytes = clone ? blk_rq_bytes(clone) : blk_rq_bytes(rq);
+ size_t nr_bytes = blk_rq_bytes(rq);
struct pgpath *pgpath;
struct block_device *bdev;
- struct dm_mpath_io *mpio;
+ struct dm_mpath_io *mpio = get_mpio(map_context);
+ struct request *clone;
/* Do we need to select a new pgpath? */
pgpath = lockless_dereference(m->current_pgpath);
@@ -556,42 +506,23 @@ static int __multipath_map(struct dm_target *ti, struct request *clone,
return r;
}
- mpio = set_mpio(m, map_context);
- if (!mpio)
- /* ENOMEM, requeue */
- return r;
-
+ memset(mpio, 0, sizeof(*mpio));
mpio->pgpath = pgpath;
mpio->nr_bytes = nr_bytes;
bdev = pgpath->path.dev->bdev;
- if (clone) {
- /*
- * Old request-based interface: allocated clone is passed in.
- * Used by: .request_fn stacked on .request_fn path(s).
- */
- clone->q = bdev_get_queue(bdev);
- clone->rq_disk = bdev->bd_disk;
- clone->cmd_flags |= REQ_FAILFAST_TRANSPORT;
- } else {
- /*
- * blk-mq request-based interface; used by both:
- * .request_fn stacked on blk-mq path(s) and
- * blk-mq stacked on blk-mq path(s).
- */
- clone = blk_mq_alloc_request(bdev_get_queue(bdev),
- rq_data_dir(rq), BLK_MQ_REQ_NOWAIT);
- if (IS_ERR(clone)) {
- /* EBUSY, ENODEV or EWOULDBLOCK: requeue */
- clear_request_fn_mpio(m, map_context);
- return r;
- }
- clone->bio = clone->biotail = NULL;
- clone->rq_disk = bdev->bd_disk;
- clone->cmd_flags |= REQ_FAILFAST_TRANSPORT;
- *__clone = clone;
+ clone = blk_get_request(bdev_get_queue(bdev),
+ rq->cmd_flags | REQ_NOMERGE,
+ GFP_ATOMIC);
+ if (IS_ERR(clone)) {
+ /* EBUSY, ENODEV or EWOULDBLOCK: requeue */
+ return r;
}
+ clone->bio = clone->biotail = NULL;
+ clone->rq_disk = bdev->bd_disk;
+ clone->cmd_flags |= REQ_FAILFAST_TRANSPORT;
+ *__clone = clone;
if (pgpath->pg->ps.type->start_io)
pgpath->pg->ps.type->start_io(&pgpath->pg->ps,
@@ -600,22 +531,9 @@ static int __multipath_map(struct dm_target *ti, struct request *clone,
return DM_MAPIO_REMAPPED;
}
-static int multipath_map(struct dm_target *ti, struct request *clone,
- union map_info *map_context)
-{
- return __multipath_map(ti, clone, map_context, NULL, NULL);
-}
-
-static int multipath_clone_and_map(struct dm_target *ti, struct request *rq,
- union map_info *map_context,
- struct request **clone)
-{
- return __multipath_map(ti, NULL, map_context, rq, clone);
-}
-
static void multipath_release_clone(struct request *clone)
{
- blk_mq_free_request(clone);
+ blk_put_request(clone);
}
/*
@@ -1187,7 +1105,7 @@ static int multipath_ctr(struct dm_target *ti, unsigned argc, char **argv)
ti->num_write_same_bios = 1;
if (m->queue_mode == DM_TYPE_BIO_BASED)
ti->per_io_data_size = multipath_per_bio_data_size();
- else if (m->queue_mode == DM_TYPE_MQ_REQUEST_BASED)
+ else
ti->per_io_data_size = sizeof(struct dm_mpath_io);
return 0;
@@ -1610,7 +1528,6 @@ static int multipath_end_io(struct dm_target *ti, struct request *clone,
if (ps->type->end_io)
ps->type->end_io(ps, &pgpath->path, mpio->nr_bytes);
}
- clear_request_fn_mpio(m, map_context);
return r;
}
@@ -2060,7 +1977,6 @@ static struct target_type multipath_target = {
.module = THIS_MODULE,
.ctr = multipath_ctr,
.dtr = multipath_dtr,
- .map_rq = multipath_map,
.clone_and_map_rq = multipath_clone_and_map,
.release_clone_rq = multipath_release_clone,
.rq_end_io = multipath_end_io,
@@ -2080,11 +1996,6 @@ static int __init dm_multipath_init(void)
{
int r;
- /* allocate a slab for the dm_mpath_ios */
- _mpio_cache = KMEM_CACHE(dm_mpath_io, 0);
- if (!_mpio_cache)
- return -ENOMEM;
-
r = dm_register_target(&multipath_target);
if (r < 0) {
DMERR("request-based register failed %d", r);
@@ -2120,8 +2031,6 @@ bad_alloc_kmpath_handlerd:
bad_alloc_kmultipathd:
dm_unregister_target(&multipath_target);
bad_register_target:
- kmem_cache_destroy(_mpio_cache);
-
return r;
}
@@ -2131,7 +2040,6 @@ static void __exit dm_multipath_exit(void)
destroy_workqueue(kmultipathd);
dm_unregister_target(&multipath_target);
- kmem_cache_destroy(_mpio_cache);
}
module_init(dm_multipath_init);
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 6e702fc..67d76f2 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -109,28 +109,6 @@ void dm_stop_queue(struct request_queue *q)
dm_mq_stop_queue(q);
}
-static struct dm_rq_target_io *alloc_old_rq_tio(struct mapped_device *md,
- gfp_t gfp_mask)
-{
- return mempool_alloc(md->io_pool, gfp_mask);
-}
-
-static void free_old_rq_tio(struct dm_rq_target_io *tio)
-{
- mempool_free(tio, tio->md->io_pool);
-}
-
-static struct request *alloc_old_clone_request(struct mapped_device *md,
- gfp_t gfp_mask)
-{
- return mempool_alloc(md->rq_pool, gfp_mask);
-}
-
-static void free_old_clone_request(struct mapped_device *md, struct request *rq)
-{
- mempool_free(rq, md->rq_pool);
-}
-
/*
* Partial completion handling for request-based dm
*/
@@ -185,7 +163,7 @@ static void end_clone_bio(struct bio *clone)
static struct dm_rq_target_io *tio_from_request(struct request *rq)
{
- return (rq->q->mq_ops ? blk_mq_rq_to_pdu(rq) : rq->special);
+ return blk_mq_rq_to_pdu(rq);
}
static void rq_end_stats(struct mapped_device *md, struct request *orig)
@@ -233,31 +211,6 @@ static void rq_completed(struct mapped_device *md, int rw, bool run_queue)
dm_put(md);
}
-static void free_rq_clone(struct request *clone)
-{
- struct dm_rq_target_io *tio = clone->end_io_data;
- struct mapped_device *md = tio->md;
-
- blk_rq_unprep_clone(clone);
-
- /*
- * It is possible for a clone_old_rq() allocated clone to
- * get passed in -- it may not yet have a request_queue.
- * This is known to occur if the error target replaces
- * a multipath target that has a request_fn queue stacked
- * on blk-mq queue(s).
- */
- if (clone->q && clone->q->mq_ops)
- /* stacked on blk-mq queue(s) */
- tio->ti->type->release_clone_rq(clone);
- else if (!md->queue->mq_ops)
- /* request_fn queue stacked on request_fn queue(s) */
- free_old_clone_request(md, clone);
-
- if (!md->queue->mq_ops)
- free_old_rq_tio(tio);
-}
-
/*
* Complete the clone and the original request.
* Must be called without clone's queue lock held,
@@ -270,20 +223,9 @@ static void dm_end_request(struct request *clone, int error)
struct mapped_device *md = tio->md;
struct request *rq = tio->orig;
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
- rq->errors = clone->errors;
- rq->resid_len = clone->resid_len;
-
- if (rq->sense)
- /*
- * We are using the sense buffer of the original
- * request.
- * So setting the length of the sense data is enough.
- */
- rq->sense_len = clone->sense_len;
- }
+ blk_rq_unprep_clone(clone);
+ tio->ti->type->release_clone_rq(clone);
- free_rq_clone(clone);
rq_end_stats(md, rq);
if (!rq->q->mq_ops)
blk_end_request_all(rq, error);
@@ -292,22 +234,6 @@ static void dm_end_request(struct request *clone, int error)
rq_completed(md, rw, true);
}
-static void dm_unprep_request(struct request *rq)
-{
- struct dm_rq_target_io *tio = tio_from_request(rq);
- struct request *clone = tio->clone;
-
- if (!rq->q->mq_ops) {
- rq->special = NULL;
- rq->rq_flags &= ~RQF_DONTPREP;
- }
-
- if (clone)
- free_rq_clone(clone);
- else if (!tio->md->queue->mq_ops)
- free_old_rq_tio(tio);
-}
-
/*
* Requeue the original request of a clone.
*/
@@ -346,7 +272,10 @@ static void dm_requeue_original_request(struct dm_rq_target_io *tio, bool delay_
int rw = rq_data_dir(rq);
rq_end_stats(md, rq);
- dm_unprep_request(rq);
+ if (tio->clone) {
+ blk_rq_unprep_clone(tio->clone);
+ tio->ti->type->release_clone_rq(tio->clone);
+ }
if (!rq->q->mq_ops)
dm_old_requeue_request(rq);
@@ -401,14 +330,11 @@ static void dm_softirq_done(struct request *rq)
if (!clone) {
rq_end_stats(tio->md, rq);
rw = rq_data_dir(rq);
- if (!rq->q->mq_ops) {
+ if (!rq->q->mq_ops)
blk_end_request_all(rq, tio->error);
- rq_completed(tio->md, rw, false);
- free_old_rq_tio(tio);
- } else {
+ else
blk_mq_end_request(rq, tio->error);
- rq_completed(tio->md, rw, false);
- }
+ rq_completed(tio->md, rw, false);
return;
}
@@ -452,16 +378,6 @@ static void end_clone_request(struct request *clone, int error)
{
struct dm_rq_target_io *tio = clone->end_io_data;
- if (!clone->q->mq_ops) {
- /*
- * For just cleaning up the information of the queue in which
- * the clone was dispatched.
- * The clone is *NOT* freed actually here because it is alloced
- * from dm own mempool (RQF_ALLOCED isn't set).
- */
- __blk_put_request(clone->q, clone);
- }
-
/*
* Actual request completion is done in a softirq context which doesn't
* hold the clone's queue lock. Otherwise, deadlock could occur because:
@@ -511,9 +427,6 @@ static int setup_clone(struct request *clone, struct request *rq,
if (r)
return r;
- clone->cmd = rq->cmd;
- clone->cmd_len = rq->cmd_len;
- clone->sense = rq->sense;
clone->end_io = end_clone_request;
clone->end_io_data = tio;
@@ -522,28 +435,6 @@ static int setup_clone(struct request *clone, struct request *rq,
return 0;
}
-static struct request *clone_old_rq(struct request *rq, struct mapped_device *md,
- struct dm_rq_target_io *tio, gfp_t gfp_mask)
-{
- /*
- * Create clone for use with .request_fn request_queue
- */
- struct request *clone;
-
- clone = alloc_old_clone_request(md, gfp_mask);
- if (!clone)
- return NULL;
-
- blk_rq_init(NULL, clone);
- if (setup_clone(clone, rq, tio, gfp_mask)) {
- /* -ENOMEM */
- free_old_clone_request(md, clone);
- return NULL;
- }
-
- return clone;
-}
-
static void map_tio_request(struct kthread_work *work);
static void init_tio(struct dm_rq_target_io *tio, struct request *rq,
@@ -565,60 +456,6 @@ static void init_tio(struct dm_rq_target_io *tio, struct request *rq,
kthread_init_work(&tio->work, map_tio_request);
}
-static struct dm_rq_target_io *dm_old_prep_tio(struct request *rq,
- struct mapped_device *md,
- gfp_t gfp_mask)
-{
- struct dm_rq_target_io *tio;
- int srcu_idx;
- struct dm_table *table;
-
- tio = alloc_old_rq_tio(md, gfp_mask);
- if (!tio)
- return NULL;
-
- init_tio(tio, rq, md);
-
- table = dm_get_live_table(md, &srcu_idx);
- /*
- * Must clone a request if this .request_fn DM device
- * is stacked on .request_fn device(s).
- */
- if (!dm_table_all_blk_mq_devices(table)) {
- if (!clone_old_rq(rq, md, tio, gfp_mask)) {
- dm_put_live_table(md, srcu_idx);
- free_old_rq_tio(tio);
- return NULL;
- }
- }
- dm_put_live_table(md, srcu_idx);
-
- return tio;
-}
-
-/*
- * Called with the queue lock held.
- */
-static int dm_old_prep_fn(struct request_queue *q, struct request *rq)
-{
- struct mapped_device *md = q->queuedata;
- struct dm_rq_target_io *tio;
-
- if (unlikely(rq->special)) {
- DMWARN("Already has something in rq->special.");
- return BLKPREP_KILL;
- }
-
- tio = dm_old_prep_tio(rq, md, GFP_ATOMIC);
- if (!tio)
- return BLKPREP_DEFER;
-
- rq->special = tio;
- rq->rq_flags |= RQF_DONTPREP;
-
- return BLKPREP_OK;
-}
-
/*
* Returns:
* DM_MAPIO_* : the request has been processed as indicated
@@ -633,31 +470,18 @@ static int map_request(struct dm_rq_target_io *tio)
struct request *rq = tio->orig;
struct request *clone = NULL;
- if (tio->clone) {
- clone = tio->clone;
- r = ti->type->map_rq(ti, clone, &tio->info);
- if (r == DM_MAPIO_DELAY_REQUEUE)
- return DM_MAPIO_REQUEUE; /* .request_fn requeue is always immediate */
- } else {
- r = ti->type->clone_and_map_rq(ti, rq, &tio->info, &clone);
- if (r < 0) {
- /* The target wants to complete the I/O */
- dm_kill_unmapped_request(rq, r);
- return r;
- }
- if (r == DM_MAPIO_REMAPPED &&
- setup_clone(clone, rq, tio, GFP_ATOMIC)) {
- /* -ENOMEM */
- ti->type->release_clone_rq(clone);
- return DM_MAPIO_REQUEUE;
- }
- }
-
+ r = ti->type->clone_and_map_rq(ti, rq, &tio->info, &clone);
switch (r) {
case DM_MAPIO_SUBMITTED:
/* The target has taken the I/O to submit by itself later */
break;
case DM_MAPIO_REMAPPED:
+ if (setup_clone(clone, rq, tio, GFP_ATOMIC)) {
+ /* -ENOMEM */
+ ti->type->release_clone_rq(clone);
+ return DM_MAPIO_REQUEUE;
+ }
+
/* The target has remapped the I/O so dispatch it */
trace_block_rq_remap(clone->q, clone, disk_devt(dm_disk(md)),
blk_rq_pos(rq));
@@ -716,6 +540,29 @@ static void dm_start_request(struct mapped_device *md, struct request *orig)
dm_get(md);
}
+static int __dm_rq_init_rq(struct mapped_device *md, struct request *rq)
+{
+ struct dm_rq_target_io *tio = blk_mq_rq_to_pdu(rq);
+
+ /*
+ * Must initialize md member of tio, otherwise it won't
+ * be available in dm_mq_queue_rq.
+ */
+ tio->md = md;
+
+ if (md->init_tio_pdu) {
+ /* target-specific per-io data is immediately after the tio */
+ tio->info.ptr = tio + 1;
+ }
+
+ return 0;
+}
+
+static int dm_rq_init_rq(struct request_queue *q, struct request *rq, gfp_t gfp)
+{
+ return __dm_rq_init_rq(q->rq_alloc_data, rq);
+}
+
static void map_tio_request(struct kthread_work *work)
{
struct dm_rq_target_io *tio = container_of(work, struct dm_rq_target_io, work);
@@ -814,6 +661,7 @@ static void dm_old_request_fn(struct request_queue *q)
dm_start_request(md, rq);
tio = tio_from_request(rq);
+ init_tio(tio, rq, md);
/* Establish tio->ti before queuing work (map_tio_request) */
tio->ti = ti;
kthread_queue_work(&md->kworker, &tio->work);
@@ -824,10 +672,23 @@ static void dm_old_request_fn(struct request_queue *q)
/*
* Fully initialize a .request_fn request-based queue.
*/
-int dm_old_init_request_queue(struct mapped_device *md)
+int dm_old_init_request_queue(struct mapped_device *md, struct dm_table *t)
{
+ struct dm_target *immutable_tgt;
+
/* Fully initialize the queue */
- if (!blk_init_allocated_queue(md->queue, dm_old_request_fn, NULL))
+ md->queue->cmd_size = sizeof(struct dm_rq_target_io);
+ md->queue->rq_alloc_data = md;
+ md->queue->request_fn = dm_old_request_fn;
+ md->queue->init_rq_fn = dm_rq_init_rq;
+
+ immutable_tgt = dm_table_get_immutable_target(t);
+ if (immutable_tgt && immutable_tgt->per_io_data_size) {
+ /* any target-specific per-io data is immediately after the tio */
+ md->queue->cmd_size += immutable_tgt->per_io_data_size;
+ md->init_tio_pdu = true;
+ }
+ if (blk_init_allocated_queue(md->queue) < 0)
return -EINVAL;
/* disable dm_old_request_fn's merge heuristic by default */
@@ -835,7 +696,6 @@ int dm_old_init_request_queue(struct mapped_device *md)
dm_init_normal_md_queue(md);
blk_queue_softirq_done(md->queue, dm_softirq_done);
- blk_queue_prep_rq(md->queue, dm_old_prep_fn);
/* Initialize the request-based DM worker thread */
kthread_init_worker(&md->kworker);
@@ -856,21 +716,7 @@ static int dm_mq_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
{
- struct mapped_device *md = data;
- struct dm_rq_target_io *tio = blk_mq_rq_to_pdu(rq);
-
- /*
- * Must initialize md member of tio, otherwise it won't
- * be available in dm_mq_queue_rq.
- */
- tio->md = md;
-
- if (md->init_tio_pdu) {
- /* target-specific per-io data is immediately after the tio */
- tio->info.ptr = tio + 1;
- }
-
- return 0;
+ return __dm_rq_init_rq(data, rq);
}
static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,
diff --git a/drivers/md/dm-rq.h b/drivers/md/dm-rq.h
index 4da06ca..f0020d2 100644
--- a/drivers/md/dm-rq.h
+++ b/drivers/md/dm-rq.h
@@ -48,7 +48,7 @@ struct dm_rq_clone_bio_info {
bool dm_use_blk_mq_default(void);
bool dm_use_blk_mq(struct mapped_device *md);
-int dm_old_init_request_queue(struct mapped_device *md);
+int dm_old_init_request_queue(struct mapped_device *md, struct dm_table *t);
int dm_mq_init_request_queue(struct mapped_device *md, struct dm_table *t);
void dm_mq_cleanup_mapped_device(struct mapped_device *md);
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 0a427de..3ad16d9 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1750,7 +1750,7 @@ int dm_table_any_congested(struct dm_table *t, int bdi_bits)
char b[BDEVNAME_SIZE];
if (likely(q))
- r |= bdi_congested(&q->backing_dev_info, bdi_bits);
+ r |= bdi_congested(q->backing_dev_info, bdi_bits);
else
DMWARN_LIMIT("%s: any_congested: nonexistent device %s",
dm_device_name(t->md),
diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index 710ae28..43d3445 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -131,12 +131,6 @@ static int io_err_map(struct dm_target *tt, struct bio *bio)
return -EIO;
}
-static int io_err_map_rq(struct dm_target *ti, struct request *clone,
- union map_info *map_context)
-{
- return -EIO;
-}
-
static int io_err_clone_and_map_rq(struct dm_target *ti, struct request *rq,
union map_info *map_context,
struct request **clone)
@@ -161,7 +155,6 @@ static struct target_type error_target = {
.ctr = io_err_ctr,
.dtr = io_err_dtr,
.map = io_err_map,
- .map_rq = io_err_map_rq,
.clone_and_map_rq = io_err_clone_and_map_rq,
.release_clone_rq = io_err_release_clone_rq,
.direct_access = io_err_direct_access,
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index d1c05c1..2b266a2 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -699,7 +699,7 @@ static void remap_to_origin(struct thin_c *tc, struct bio *bio)
static int bio_triggers_commit(struct thin_c *tc, struct bio *bio)
{
- return (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA)) &&
+ return op_is_flush(bio->bi_opf) &&
dm_thin_changed_this_transaction(tc->td);
}
@@ -870,8 +870,7 @@ static void __inc_remap_and_issue_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
- if (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA) ||
- bio_op(bio) == REQ_OP_DISCARD)
+ if (op_is_flush(bio->bi_opf) || bio_op(bio) == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
inc_all_io_entry(info->tc->pool, bio);
@@ -1716,9 +1715,8 @@ static void __remap_and_issue_shared_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
- if ((bio_data_dir(bio) == WRITE) ||
- (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA) ||
- bio_op(bio) == REQ_OP_DISCARD))
+ if (bio_data_dir(bio) == WRITE || op_is_flush(bio->bi_opf) ||
+ bio_op(bio) == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));;
@@ -2635,8 +2633,7 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio)
return DM_MAPIO_SUBMITTED;
}
- if (bio->bi_opf & (REQ_PREFLUSH | REQ_FUA) ||
- bio_op(bio) == REQ_OP_DISCARD) {
+ if (op_is_flush(bio->bi_opf) || bio_op(bio) == REQ_OP_DISCARD) {
thin_defer_bio_with_throttle(tc, bio);
return DM_MAPIO_SUBMITTED;
}
@@ -2714,7 +2711,7 @@ static int pool_is_congested(struct dm_target_callbacks *cb, int bdi_bits)
return 1;
q = bdev_get_queue(pt->data_dev->bdev);
- return bdi_congested(&q->backing_dev_info, bdi_bits);
+ return bdi_congested(q->backing_dev_info, bdi_bits);
}
static void requeue_bios(struct pool *pool)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 3086da5..5bd9ab0 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -91,7 +91,6 @@ static int dm_numa_node = DM_NUMA_NODE;
*/
struct dm_md_mempools {
mempool_t *io_pool;
- mempool_t *rq_pool;
struct bio_set *bs;
};
@@ -466,13 +465,16 @@ static int dm_blk_ioctl(struct block_device *bdev, fmode_t mode,
if (r > 0) {
/*
- * Target determined this ioctl is being issued against
- * a logical partition of the parent bdev; so extra
- * validation is needed.
+ * Target determined this ioctl is being issued against a
+ * subset of the parent bdev; require extra privileges.
*/
- r = scsi_verify_blk_ioctl(NULL, cmd);
- if (r)
+ if (!capable(CAP_SYS_RAWIO)) {
+ DMWARN_LIMIT(
+ "%s: sending ioctl %x to DM device without required privilege.",
+ current->comm, cmd);
+ r = -ENOIOCTLCMD;
goto out;
+ }
}
r = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
@@ -1314,7 +1316,7 @@ static int dm_any_congested(void *congested_data, int bdi_bits)
* With request-based DM we only need to check the
* top-level queue for congestion.
*/
- r = md->queue->backing_dev_info.wb.state & bdi_bits;
+ r = md->queue->backing_dev_info->wb.state & bdi_bits;
} else {
map = dm_get_live_table_fast(md);
if (map)
@@ -1397,7 +1399,7 @@ void dm_init_md_queue(struct mapped_device *md)
* - must do so here (in alloc_dev callchain) before queue is used
*/
md->queue->queuedata = md;
- md->queue->backing_dev_info.congested_data = md;
+ md->queue->backing_dev_info->congested_data = md;
}
void dm_init_normal_md_queue(struct mapped_device *md)
@@ -1408,7 +1410,7 @@ void dm_init_normal_md_queue(struct mapped_device *md)
/*
* Initialize aspects of queue that aren't relevant for blk-mq
*/
- md->queue->backing_dev_info.congested_fn = dm_any_congested;
+ md->queue->backing_dev_info->congested_fn = dm_any_congested;
blk_queue_bounce_limit(md->queue, BLK_BOUNCE_ANY);
}
@@ -1419,7 +1421,6 @@ static void cleanup_mapped_device(struct mapped_device *md)
if (md->kworker_task)
kthread_stop(md->kworker_task);
mempool_destroy(md->io_pool);
- mempool_destroy(md->rq_pool);
if (md->bs)
bioset_free(md->bs);
@@ -1595,12 +1596,10 @@ static void __bind_mempools(struct mapped_device *md, struct dm_table *t)
goto out;
}
- BUG_ON(!p || md->io_pool || md->rq_pool || md->bs);
+ BUG_ON(!p || md->io_pool || md->bs);
md->io_pool = p->io_pool;
p->io_pool = NULL;
- md->rq_pool = p->rq_pool;
- p->rq_pool = NULL;
md->bs = p->bs;
p->bs = NULL;
@@ -1777,7 +1776,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t)
switch (type) {
case DM_TYPE_REQUEST_BASED:
- r = dm_old_init_request_queue(md);
+ r = dm_old_init_request_queue(md, t);
if (r) {
DMERR("Cannot initialize queue for request-based mapped device");
return r;
@@ -2493,7 +2492,6 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t
unsigned integrity, unsigned per_io_data_size)
{
struct dm_md_mempools *pools = kzalloc_node(sizeof(*pools), GFP_KERNEL, md->numa_node_id);
- struct kmem_cache *cachep = NULL;
unsigned int pool_size = 0;
unsigned int front_pad;
@@ -2503,20 +2501,16 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t
switch (type) {
case DM_TYPE_BIO_BASED:
case DM_TYPE_DAX_BIO_BASED:
- cachep = _io_cache;
pool_size = dm_get_reserved_bio_based_ios();
front_pad = roundup(per_io_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone);
+
+ pools->io_pool = mempool_create_slab_pool(pool_size, _io_cache);
+ if (!pools->io_pool)
+ goto out;
break;
case DM_TYPE_REQUEST_BASED:
- cachep = _rq_tio_cache;
- pool_size = dm_get_reserved_rq_based_ios();
- pools->rq_pool = mempool_create_slab_pool(pool_size, _rq_cache);
- if (!pools->rq_pool)
- goto out;
- /* fall through to setup remaining rq-based pools */
case DM_TYPE_MQ_REQUEST_BASED:
- if (!pool_size)
- pool_size = dm_get_reserved_rq_based_ios();
+ pool_size = dm_get_reserved_rq_based_ios();
front_pad = offsetof(struct dm_rq_clone_bio_info, clone);
/* per_io_data_size is used for blk-mq pdu at queue allocation */
break;
@@ -2524,12 +2518,6 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t
BUG();
}
- if (cachep) {
- pools->io_pool = mempool_create_slab_pool(pool_size, cachep);
- if (!pools->io_pool)
- goto out;
- }
-
pools->bs = bioset_create_nobvec(pool_size, front_pad);
if (!pools->bs)
goto out;
@@ -2551,7 +2539,6 @@ void dm_free_md_mempools(struct dm_md_mempools *pools)
return;
mempool_destroy(pools->io_pool);
- mempool_destroy(pools->rq_pool);
if (pools->bs)
bioset_free(pools->bs);
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index f0aad08..f298b01 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -95,8 +95,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t);
/*
* To check whether the target type is request-based or not (bio-based).
*/
-#define dm_target_request_based(t) (((t)->type->map_rq != NULL) || \
- ((t)->type->clone_and_map_rq != NULL))
+#define dm_target_request_based(t) ((t)->type->clone_and_map_rq != NULL)
/*
* To check whether the target type is a hybrid (capable of being
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 5975c99..f1c7bba 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -62,7 +62,7 @@ static int linear_congested(struct mddev *mddev, int bits)
for (i = 0; i < mddev->raid_disks && !ret ; i++) {
struct request_queue *q = bdev_get_queue(conf->disks[i].rdev->bdev);
- ret |= bdi_congested(&q->backing_dev_info, bits);
+ ret |= bdi_congested(q->backing_dev_info, bits);
}
return ret;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 01175da..ba485dc 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5346,8 +5346,8 @@ int md_run(struct mddev *mddev)
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mddev->queue);
else
queue_flag_clear_unlocked(QUEUE_FLAG_NONROT, mddev->queue);
- mddev->queue->backing_dev_info.congested_data = mddev;
- mddev->queue->backing_dev_info.congested_fn = md_congested;
+ mddev->queue->backing_dev_info->congested_data = mddev;
+ mddev->queue->backing_dev_info->congested_fn = md_congested;
}
if (pers->sync_request) {
if (mddev->kobj.sd &&
@@ -5704,7 +5704,7 @@ static int do_md_stop(struct mddev *mddev, int mode,
__md_stop_writes(mddev);
__md_stop(mddev);
- mddev->queue->backing_dev_info.congested_fn = NULL;
+ mddev->queue->backing_dev_info->congested_fn = NULL;
/* tell userspace to handle 'inactive' */
sysfs_notify_dirent_safe(mddev->sysfs_state);
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index aa8c4e5c..d457afa 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -169,7 +169,7 @@ static int multipath_congested(struct mddev *mddev, int bits)
if (rdev && !test_bit(Faulty, &rdev->flags)) {
struct request_queue *q = bdev_get_queue(rdev->bdev);
- ret |= bdi_congested(&q->backing_dev_info, bits);
+ ret |= bdi_congested(q->backing_dev_info, bits);
/* Just like multipath_map, we just check the
* first available device
*/
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 848365d..d658523 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -41,7 +41,7 @@ static int raid0_congested(struct mddev *mddev, int bits)
for (i = 0; i < raid_disks && !ret ; i++) {
struct request_queue *q = bdev_get_queue(devlist[i]->bdev);
- ret |= bdi_congested(&q->backing_dev_info, bits);
+ ret |= bdi_congested(q->backing_dev_info, bits);
}
return ret;
}
@@ -420,8 +420,8 @@ static int raid0_run(struct mddev *mddev)
*/
int stripe = mddev->raid_disks *
(mddev->chunk_sectors << 9) / PAGE_SIZE;
- if (mddev->queue->backing_dev_info.ra_pages < 2* stripe)
- mddev->queue->backing_dev_info.ra_pages = 2* stripe;
+ if (mddev->queue->backing_dev_info->ra_pages < 2* stripe)
+ mddev->queue->backing_dev_info->ra_pages = 2* stripe;
}
dump_zones(mddev);
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 7b0f647..830ff2b 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -744,9 +744,9 @@ static int raid1_congested(struct mddev *mddev, int bits)
* non-congested targets, it can be removed
*/
if ((bits & (1 << WB_async_congested)) || 1)
- ret |= bdi_congested(&q->backing_dev_info, bits);
+ ret |= bdi_congested(q->backing_dev_info, bits);
else
- ret &= bdi_congested(&q->backing_dev_info, bits);
+ ret &= bdi_congested(q->backing_dev_info, bits);
}
}
rcu_read_unlock();
@@ -1170,10 +1170,6 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
int i, disks;
struct bitmap *bitmap = mddev->bitmap;
unsigned long flags;
- const int op = bio_op(bio);
- const unsigned long do_sync = (bio->bi_opf & REQ_SYNC);
- const unsigned long do_flush_fua = (bio->bi_opf &
- (REQ_PREFLUSH | REQ_FUA));
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
struct raid1_plug_cb *plug = NULL;
@@ -1389,7 +1385,8 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
conf->mirrors[i].rdev->data_offset);
mbio->bi_bdev = conf->mirrors[i].rdev->bdev;
mbio->bi_end_io = raid1_end_write_request;
- bio_set_op_attrs(mbio, op, do_flush_fua | do_sync);
+ mbio->bi_opf = bio_op(bio) |
+ (bio->bi_opf & (REQ_SYNC | REQ_PREFLUSH | REQ_FUA));
if (test_bit(FailFast, &conf->mirrors[i].rdev->flags) &&
!test_bit(WriteMostly, &conf->mirrors[i].rdev->flags) &&
conf->raid_disks - mddev->degraded > 1)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 1920756..6bc5c2a 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -860,7 +860,7 @@ static int raid10_congested(struct mddev *mddev, int bits)
if (rdev && !test_bit(Faulty, &rdev->flags)) {
struct request_queue *q = bdev_get_queue(rdev->bdev);
- ret |= bdi_congested(&q->backing_dev_info, bits);
+ ret |= bdi_congested(q->backing_dev_info, bits);
}
}
rcu_read_unlock();
@@ -3841,8 +3841,8 @@ static int raid10_run(struct mddev *mddev)
* maybe...
*/
stripe /= conf->geo.near_copies;
- if (mddev->queue->backing_dev_info.ra_pages < 2 * stripe)
- mddev->queue->backing_dev_info.ra_pages = 2 * stripe;
+ if (mddev->queue->backing_dev_info->ra_pages < 2 * stripe)
+ mddev->queue->backing_dev_info->ra_pages = 2 * stripe;
}
if (md_integrity_register(mddev))
@@ -4643,8 +4643,8 @@ static void end_reshape(struct r10conf *conf)
int stripe = conf->geo.raid_disks *
((conf->mddev->chunk_sectors << 9) / PAGE_SIZE);
stripe /= conf->geo.near_copies;
- if (conf->mddev->queue->backing_dev_info.ra_pages < 2 * stripe)
- conf->mddev->queue->backing_dev_info.ra_pages = 2 * stripe;
+ if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe)
+ conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe;
}
conf->fullsync = 0;
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 3c7e106..6214e69 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -6331,10 +6331,10 @@ raid5_store_skip_copy(struct mddev *mddev, const char *page, size_t len)
mddev_suspend(mddev);
conf->skip_copy = new;
if (new)
- mddev->queue->backing_dev_info.capabilities |=
+ mddev->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
else
- mddev->queue->backing_dev_info.capabilities &=
+ mddev->queue->backing_dev_info->capabilities &=
~BDI_CAP_STABLE_WRITES;
mddev_resume(mddev);
}
@@ -7153,8 +7153,8 @@ static int raid5_run(struct mddev *mddev)
int data_disks = conf->previous_raid_disks - conf->max_degraded;
int stripe = data_disks *
((mddev->chunk_sectors << 9) / PAGE_SIZE);
- if (mddev->queue->backing_dev_info.ra_pages < 2 * stripe)
- mddev->queue->backing_dev_info.ra_pages = 2 * stripe;
+ if (mddev->queue->backing_dev_info->ra_pages < 2 * stripe)
+ mddev->queue->backing_dev_info->ra_pages = 2 * stripe;
chunk_size = mddev->chunk_sectors << 9;
blk_queue_io_min(mddev->queue, chunk_size);
@@ -7763,8 +7763,8 @@ static void end_reshape(struct r5conf *conf)
int data_disks = conf->raid_disks - conf->max_degraded;
int stripe = data_disks * ((conf->chunk_sectors << 9)
/ PAGE_SIZE);
- if (conf->mddev->queue->backing_dev_info.ra_pages < 2 * stripe)
- conf->mddev->queue->backing_dev_info.ra_pages = 2 * stripe;
+ if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe)
+ conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe;
}
}
}
diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c
index f3512404..99e651c 100644
--- a/drivers/memstick/core/ms_block.c
+++ b/drivers/memstick/core/ms_block.c
@@ -2000,16 +2000,6 @@ static int msb_bd_getgeo(struct block_device *bdev,
return 0;
}
-static int msb_prepare_req(struct request_queue *q, struct request *req)
-{
- if (req->cmd_type != REQ_TYPE_FS) {
- blk_dump_rq_flags(req, "MS unsupported request");
- return BLKPREP_KILL;
- }
- req->rq_flags |= RQF_DONTPREP;
- return BLKPREP_OK;
-}
-
static void msb_submit_req(struct request_queue *q)
{
struct memstick_dev *card = q->queuedata;
@@ -2132,7 +2122,6 @@ static int msb_init_disk(struct memstick_dev *card)
}
msb->queue->queuedata = card;
- blk_queue_prep_rq(msb->queue, msb_prepare_req);
blk_queue_bounce_limit(msb->queue, limit);
blk_queue_max_hw_sectors(msb->queue, MS_BLOCK_MAX_PAGES);
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index fa0746d..c00d8a2 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -827,18 +827,6 @@ static void mspro_block_start(struct memstick_dev *card)
spin_unlock_irqrestore(&msb->q_lock, flags);
}
-static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
-{
- if (req->cmd_type != REQ_TYPE_FS) {
- blk_dump_rq_flags(req, "MSPro unsupported request");
- return BLKPREP_KILL;
- }
-
- req->rq_flags |= RQF_DONTPREP;
-
- return BLKPREP_OK;
-}
-
static void mspro_block_submit_req(struct request_queue *q)
{
struct memstick_dev *card = q->queuedata;
@@ -1228,7 +1216,6 @@ static int mspro_block_init_disk(struct memstick_dev *card)
}
msb->queue->queuedata = card;
- blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
blk_queue_bounce_limit(msb->queue, limit);
blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 7ee1667..b8c4b2b 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -2320,10 +2320,10 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
SmpPassthroughReply_t *smprep;
smprep = (SmpPassthroughReply_t *)ioc->sas_mgmt.reply;
- memcpy(req->sense, smprep, sizeof(*smprep));
- req->sense_len = sizeof(*smprep);
- req->resid_len = 0;
- rsp->resid_len -= smprep->ResponseDataLength;
+ memcpy(scsi_req(req)->sense, smprep, sizeof(*smprep));
+ scsi_req(req)->sense_len = sizeof(*smprep);
+ scsi_req(req)->resid_len = 0;
+ scsi_req(rsp)->resid_len -= smprep->ResponseDataLength;
} else {
printk(MYIOC_s_ERR_FMT
"%s: smp passthru reply failed to be returned\n",
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index a6496d8..033f641 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -30,15 +30,6 @@ static int mmc_prep_request(struct request_queue *q, struct request *req)
{
struct mmc_queue *mq = q->queuedata;
- /*
- * We only like normal block requests and discards.
- */
- if (req->cmd_type != REQ_TYPE_FS && req_op(req) != REQ_OP_DISCARD &&
- req_op(req) != REQ_OP_SECURE_ERASE) {
- blk_dump_rq_flags(req, "MMC bad request");
- return BLKPREP_KILL;
- }
-
if (mq && (mmc_card_removed(mq->card) || mmc_access_rpmb(mq)))
return BLKPREP_KILL;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index df8a5ef..6b8d5cd 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -84,9 +84,6 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
nsect = blk_rq_cur_bytes(req) >> tr->blkshift;
buf = bio_data(req->bio);
- if (req->cmd_type != REQ_TYPE_FS)
- return -EIO;
-
if (req_op(req) == REQ_OP_FLUSH)
return tr->flush(dev);
@@ -94,16 +91,16 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
get_capacity(req->rq_disk))
return -EIO;
- if (req_op(req) == REQ_OP_DISCARD)
+ switch (req_op(req)) {
+ case REQ_OP_DISCARD:
return tr->discard(dev, block, nsect);
-
- if (rq_data_dir(req) == READ) {
+ case REQ_OP_READ:
for (; nsect > 0; nsect--, block++, buf += tr->blksize)
if (tr->readsect(dev, block, buf))
return -EIO;
rq_flush_dcache_pages(req);
return 0;
- } else {
+ case REQ_OP_WRITE:
if (!tr->writesect)
return -EIO;
@@ -112,6 +109,8 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
if (tr->writesect(dev, block, buf))
return -EIO;
return 0;
+ default:
+ return -EIO;
}
}
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index d1e6931..c80869e 100644
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -323,16 +323,15 @@ static int ubiblock_queue_rq(struct blk_mq_hw_ctx *hctx,
struct ubiblock *dev = hctx->queue->queuedata;
struct ubiblock_pdu *pdu = blk_mq_rq_to_pdu(req);
- if (req->cmd_type != REQ_TYPE_FS)
+ switch (req_op(req)) {
+ case REQ_OP_READ:
+ ubi_sgl_init(&pdu->usgl);
+ queue_work(dev->wq, &pdu->work);
+ return BLK_MQ_RQ_QUEUE_OK;
+ default:
return BLK_MQ_RQ_QUEUE_ERROR;
+ }
- if (rq_data_dir(req) != READ)
- return BLK_MQ_RQ_QUEUE_ERROR; /* Write not implemented */
-
- ubi_sgl_init(&pdu->usgl);
- queue_work(dev->wq, &pdu->work);
-
- return BLK_MQ_RQ_QUEUE_OK;
}
static int ubiblock_init_request(void *data, struct request *req,
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 8a3c3e3..44a1a25 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -208,18 +208,18 @@ EXPORT_SYMBOL_GPL(nvme_requeue_req);
struct request *nvme_alloc_request(struct request_queue *q,
struct nvme_command *cmd, unsigned int flags, int qid)
{
+ unsigned op = nvme_is_write(cmd) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN;
struct request *req;
if (qid == NVME_QID_ANY) {
- req = blk_mq_alloc_request(q, nvme_is_write(cmd), flags);
+ req = blk_mq_alloc_request(q, op, flags);
} else {
- req = blk_mq_alloc_request_hctx(q, nvme_is_write(cmd), flags,
+ req = blk_mq_alloc_request_hctx(q, op, flags,
qid ? qid - 1 : 0);
}
if (IS_ERR(req))
return req;
- req->cmd_type = REQ_TYPE_DRV_PRIV;
req->cmd_flags |= REQ_FAILFAST_DRIVER;
nvme_req(req)->cmd = cmd;
@@ -238,26 +238,38 @@ static inline void nvme_setup_flush(struct nvme_ns *ns,
static inline int nvme_setup_discard(struct nvme_ns *ns, struct request *req,
struct nvme_command *cmnd)
{
+ unsigned short segments = blk_rq_nr_discard_segments(req), n = 0;
struct nvme_dsm_range *range;
- unsigned int nr_bytes = blk_rq_bytes(req);
+ struct bio *bio;
- range = kmalloc(sizeof(*range), GFP_ATOMIC);
+ range = kmalloc_array(segments, sizeof(*range), GFP_ATOMIC);
if (!range)
return BLK_MQ_RQ_QUEUE_BUSY;
- range->cattr = cpu_to_le32(0);
- range->nlb = cpu_to_le32(nr_bytes >> ns->lba_shift);
- range->slba = cpu_to_le64(nvme_block_nr(ns, blk_rq_pos(req)));
+ __rq_for_each_bio(bio, req) {
+ u64 slba = nvme_block_nr(ns, bio->bi_iter.bi_sector);
+ u32 nlb = bio->bi_iter.bi_size >> ns->lba_shift;
+
+ range[n].cattr = cpu_to_le32(0);
+ range[n].nlb = cpu_to_le32(nlb);
+ range[n].slba = cpu_to_le64(slba);
+ n++;
+ }
+
+ if (WARN_ON_ONCE(n != segments)) {
+ kfree(range);
+ return BLK_MQ_RQ_QUEUE_ERROR;
+ }
memset(cmnd, 0, sizeof(*cmnd));
cmnd->dsm.opcode = nvme_cmd_dsm;
cmnd->dsm.nsid = cpu_to_le32(ns->ns_id);
- cmnd->dsm.nr = 0;
+ cmnd->dsm.nr = segments - 1;
cmnd->dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD);
req->special_vec.bv_page = virt_to_page(range);
req->special_vec.bv_offset = offset_in_page(range);
- req->special_vec.bv_len = sizeof(*range);
+ req->special_vec.bv_len = sizeof(*range) * segments;
req->rq_flags |= RQF_SPECIAL_PAYLOAD;
return BLK_MQ_RQ_QUEUE_OK;
@@ -309,17 +321,27 @@ int nvme_setup_cmd(struct nvme_ns *ns, struct request *req,
{
int ret = BLK_MQ_RQ_QUEUE_OK;
- if (req->cmd_type == REQ_TYPE_DRV_PRIV)
+ switch (req_op(req)) {
+ case REQ_OP_DRV_IN:
+ case REQ_OP_DRV_OUT:
memcpy(cmd, nvme_req(req)->cmd, sizeof(*cmd));
- else if (req_op(req) == REQ_OP_FLUSH)
+ break;
+ case REQ_OP_FLUSH:
nvme_setup_flush(ns, cmd);
- else if (req_op(req) == REQ_OP_DISCARD)
+ break;
+ case REQ_OP_DISCARD:
ret = nvme_setup_discard(ns, req, cmd);
- else
+ break;
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
nvme_setup_rw(ns, req, cmd);
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return BLK_MQ_RQ_QUEUE_ERROR;
+ }
cmd->common.command_id = req->tag;
-
return ret;
}
EXPORT_SYMBOL_GPL(nvme_setup_cmd);
@@ -784,6 +806,13 @@ static int nvme_ioctl(struct block_device *bdev, fmode_t mode,
return nvme_sg_io(ns, (void __user *)arg);
#endif
default:
+#ifdef CONFIG_NVM
+ if (ns->ndev)
+ return nvme_nvm_ioctl(ns, cmd, arg);
+#endif
+ if (is_sed_ioctl(cmd))
+ return sed_ioctl(ns->ctrl->opal_dev, cmd,
+ (void __user *) arg);
return -ENOTTY;
}
}
@@ -861,6 +890,9 @@ static void nvme_config_discard(struct nvme_ns *ns)
struct nvme_ctrl *ctrl = ns->ctrl;
u32 logical_block_size = queue_logical_block_size(ns->queue);
+ BUILD_BUG_ON(PAGE_SIZE / sizeof(struct nvme_dsm_range) <
+ NVME_DSM_MAX_RANGES);
+
if (ctrl->quirks & NVME_QUIRK_DISCARD_ZEROES)
ns->queue->limits.discard_zeroes_data = 1;
else
@@ -869,6 +901,7 @@ static void nvme_config_discard(struct nvme_ns *ns)
ns->queue->limits.discard_alignment = logical_block_size;
ns->queue->limits.discard_granularity = logical_block_size;
blk_queue_max_discard_sectors(ns->queue, UINT_MAX);
+ blk_queue_max_discard_segments(ns->queue, NVME_DSM_MAX_RANGES);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, ns->queue);
}
@@ -1051,6 +1084,28 @@ static const struct pr_ops nvme_pr_ops = {
.pr_clear = nvme_pr_clear,
};
+#ifdef CONFIG_BLK_SED_OPAL
+int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len,
+ bool send)
+{
+ struct nvme_ctrl *ctrl = data;
+ struct nvme_command cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+ if (send)
+ cmd.common.opcode = nvme_admin_security_send;
+ else
+ cmd.common.opcode = nvme_admin_security_recv;
+ cmd.common.nsid = 0;
+ cmd.common.cdw10[0] = cpu_to_le32(((u32)secp) << 24 | ((u32)spsp) << 8);
+ cmd.common.cdw10[1] = cpu_to_le32(len);
+
+ return __nvme_submit_sync_cmd(ctrl->admin_q, &cmd, NULL, buffer, len,
+ ADMIN_TIMEOUT, NVME_QID_ANY, 1, 0);
+}
+EXPORT_SYMBOL_GPL(nvme_sec_submit);
+#endif /* CONFIG_BLK_SED_OPAL */
+
static const struct block_device_operations nvme_fops = {
.owner = THIS_MODULE,
.ioctl = nvme_ioctl,
@@ -1230,6 +1285,7 @@ int nvme_init_identify(struct nvme_ctrl *ctrl)
return -EIO;
}
+ ctrl->oacs = le16_to_cpu(id->oacs);
ctrl->vid = le16_to_cpu(id->vid);
ctrl->oncs = le16_to_cpup(&id->oncs);
atomic_set(&ctrl->abort_limit, id->acl + 1);
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index e65041c..fb51a8d 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -1937,7 +1937,7 @@ nvme_fc_complete_rq(struct request *rq)
return;
}
- if (rq->cmd_type == REQ_TYPE_DRV_PRIV)
+ if (blk_rq_is_passthrough(rq))
error = rq->errors;
else
error = nvme_error_status(rq->errors);
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 588d4a3..21cac85 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -26,6 +26,8 @@
#include <linux/bitops.h>
#include <linux/lightnvm.h>
#include <linux/vmalloc.h>
+#include <linux/sched/sysctl.h>
+#include <uapi/linux/lightnvm.h>
enum nvme_nvm_admin_opcode {
nvme_nvm_admin_identity = 0xe2,
@@ -248,50 +250,48 @@ static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id)
{
struct nvme_nvm_id_group *src;
struct nvm_id_group *dst;
- int i, end;
-
- end = min_t(u32, 4, nvm_id->cgrps);
-
- for (i = 0; i < end; i++) {
- src = &nvme_nvm_id->groups[i];
- dst = &nvm_id->groups[i];
-
- dst->mtype = src->mtype;
- dst->fmtype = src->fmtype;
- dst->num_ch = src->num_ch;
- dst->num_lun = src->num_lun;
- dst->num_pln = src->num_pln;
-
- dst->num_pg = le16_to_cpu(src->num_pg);
- dst->num_blk = le16_to_cpu(src->num_blk);
- dst->fpg_sz = le16_to_cpu(src->fpg_sz);
- dst->csecs = le16_to_cpu(src->csecs);
- dst->sos = le16_to_cpu(src->sos);
-
- dst->trdt = le32_to_cpu(src->trdt);
- dst->trdm = le32_to_cpu(src->trdm);
- dst->tprt = le32_to_cpu(src->tprt);
- dst->tprm = le32_to_cpu(src->tprm);
- dst->tbet = le32_to_cpu(src->tbet);
- dst->tbem = le32_to_cpu(src->tbem);
- dst->mpos = le32_to_cpu(src->mpos);
- dst->mccap = le32_to_cpu(src->mccap);
-
- dst->cpar = le16_to_cpu(src->cpar);
-
- if (dst->fmtype == NVM_ID_FMTYPE_MLC) {
- memcpy(dst->lptbl.id, src->lptbl.id, 8);
- dst->lptbl.mlc.num_pairs =
- le16_to_cpu(src->lptbl.mlc.num_pairs);
-
- if (dst->lptbl.mlc.num_pairs > NVME_NVM_LP_MLC_PAIRS) {
- pr_err("nvm: number of MLC pairs not supported\n");
- return -EINVAL;
- }
- memcpy(dst->lptbl.mlc.pairs, src->lptbl.mlc.pairs,
- dst->lptbl.mlc.num_pairs);
+ if (nvme_nvm_id->cgrps != 1)
+ return -EINVAL;
+
+ src = &nvme_nvm_id->groups[0];
+ dst = &nvm_id->grp;
+
+ dst->mtype = src->mtype;
+ dst->fmtype = src->fmtype;
+ dst->num_ch = src->num_ch;
+ dst->num_lun = src->num_lun;
+ dst->num_pln = src->num_pln;
+
+ dst->num_pg = le16_to_cpu(src->num_pg);
+ dst->num_blk = le16_to_cpu(src->num_blk);
+ dst->fpg_sz = le16_to_cpu(src->fpg_sz);
+ dst->csecs = le16_to_cpu(src->csecs);
+ dst->sos = le16_to_cpu(src->sos);
+
+ dst->trdt = le32_to_cpu(src->trdt);
+ dst->trdm = le32_to_cpu(src->trdm);
+ dst->tprt = le32_to_cpu(src->tprt);
+ dst->tprm = le32_to_cpu(src->tprm);
+ dst->tbet = le32_to_cpu(src->tbet);
+ dst->tbem = le32_to_cpu(src->tbem);
+ dst->mpos = le32_to_cpu(src->mpos);
+ dst->mccap = le32_to_cpu(src->mccap);
+
+ dst->cpar = le16_to_cpu(src->cpar);
+
+ if (dst->fmtype == NVM_ID_FMTYPE_MLC) {
+ memcpy(dst->lptbl.id, src->lptbl.id, 8);
+ dst->lptbl.mlc.num_pairs =
+ le16_to_cpu(src->lptbl.mlc.num_pairs);
+
+ if (dst->lptbl.mlc.num_pairs > NVME_NVM_LP_MLC_PAIRS) {
+ pr_err("nvm: number of MLC pairs not supported\n");
+ return -EINVAL;
}
+
+ memcpy(dst->lptbl.mlc.pairs, src->lptbl.mlc.pairs,
+ dst->lptbl.mlc.num_pairs);
}
return 0;
@@ -321,7 +321,6 @@ static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id)
nvm_id->ver_id = nvme_nvm_id->ver_id;
nvm_id->vmnt = nvme_nvm_id->vmnt;
- nvm_id->cgrps = nvme_nvm_id->cgrps;
nvm_id->cap = le32_to_cpu(nvme_nvm_id->cap);
nvm_id->dom = le32_to_cpu(nvme_nvm_id->dom);
memcpy(&nvm_id->ppaf, &nvme_nvm_id->ppaf,
@@ -372,7 +371,7 @@ static int nvme_nvm_get_l2p_tbl(struct nvm_dev *nvmdev, u64 slba, u32 nlb,
}
/* Transform physical address to target address space */
- nvmdev->mt->part_to_tgt(nvmdev, entries, cmd_nlb);
+ nvm_part_to_tgt(nvmdev, entries, cmd_nlb);
if (update_l2p(cmd_slba, cmd_nlb, entries, priv)) {
ret = -EINTR;
@@ -485,7 +484,8 @@ static void nvme_nvm_end_io(struct request *rq, int error)
struct nvm_rq *rqd = rq->end_io_data;
rqd->ppa_status = nvme_req(rq)->result.u64;
- nvm_end_io(rqd, error);
+ rqd->error = error;
+ nvm_end_io(rqd);
kfree(nvme_req(rq)->cmd);
blk_mq_free_request(rq);
@@ -586,6 +586,224 @@ static struct nvm_dev_ops nvme_nvm_dev_ops = {
.max_phys_sect = 64,
};
+static void nvme_nvm_end_user_vio(struct request *rq, int error)
+{
+ struct completion *waiting = rq->end_io_data;
+
+ complete(waiting);
+}
+
+static int nvme_nvm_submit_user_cmd(struct request_queue *q,
+ struct nvme_ns *ns,
+ struct nvme_nvm_command *vcmd,
+ void __user *ubuf, unsigned int bufflen,
+ void __user *meta_buf, unsigned int meta_len,
+ void __user *ppa_buf, unsigned int ppa_len,
+ u32 *result, u64 *status, unsigned int timeout)
+{
+ bool write = nvme_is_write((struct nvme_command *)vcmd);
+ struct nvm_dev *dev = ns->ndev;
+ struct gendisk *disk = ns->disk;
+ struct request *rq;
+ struct bio *bio = NULL;
+ __le64 *ppa_list = NULL;
+ dma_addr_t ppa_dma;
+ __le64 *metadata = NULL;
+ dma_addr_t metadata_dma;
+ DECLARE_COMPLETION_ONSTACK(wait);
+ int ret;
+
+ rq = nvme_alloc_request(q, (struct nvme_command *)vcmd, 0,
+ NVME_QID_ANY);
+ if (IS_ERR(rq)) {
+ ret = -ENOMEM;
+ goto err_cmd;
+ }
+
+ rq->timeout = timeout ? timeout : ADMIN_TIMEOUT;
+
+ rq->cmd_flags &= ~REQ_FAILFAST_DRIVER;
+ rq->end_io_data = &wait;
+
+ if (ppa_buf && ppa_len) {
+ ppa_list = dma_pool_alloc(dev->dma_pool, GFP_KERNEL, &ppa_dma);
+ if (!ppa_list) {
+ ret = -ENOMEM;
+ goto err_rq;
+ }
+ if (copy_from_user(ppa_list, (void __user *)ppa_buf,
+ sizeof(u64) * (ppa_len + 1))) {
+ ret = -EFAULT;
+ goto err_ppa;
+ }
+ vcmd->ph_rw.spba = cpu_to_le64(ppa_dma);
+ } else {
+ vcmd->ph_rw.spba = cpu_to_le64((uintptr_t)ppa_buf);
+ }
+
+ if (ubuf && bufflen) {
+ ret = blk_rq_map_user(q, rq, NULL, ubuf, bufflen, GFP_KERNEL);
+ if (ret)
+ goto err_ppa;
+ bio = rq->bio;
+
+ if (meta_buf && meta_len) {
+ metadata = dma_pool_alloc(dev->dma_pool, GFP_KERNEL,
+ &metadata_dma);
+ if (!metadata) {
+ ret = -ENOMEM;
+ goto err_map;
+ }
+
+ if (write) {
+ if (copy_from_user(metadata,
+ (void __user *)meta_buf,
+ meta_len)) {
+ ret = -EFAULT;
+ goto err_meta;
+ }
+ }
+ vcmd->ph_rw.metadata = cpu_to_le64(metadata_dma);
+ }
+
+ if (!disk)
+ goto submit;
+
+ bio->bi_bdev = bdget_disk(disk, 0);
+ if (!bio->bi_bdev) {
+ ret = -ENODEV;
+ goto err_meta;
+ }
+ }
+
+submit:
+ blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_user_vio);
+
+ wait_for_completion_io(&wait);
+
+ ret = nvme_error_status(rq->errors);
+ if (result)
+ *result = rq->errors & 0x7ff;
+ if (status)
+ *status = le64_to_cpu(nvme_req(rq)->result.u64);
+
+ if (metadata && !ret && !write) {
+ if (copy_to_user(meta_buf, (void *)metadata, meta_len))
+ ret = -EFAULT;
+ }
+err_meta:
+ if (meta_buf && meta_len)
+ dma_pool_free(dev->dma_pool, metadata, metadata_dma);
+err_map:
+ if (bio) {
+ if (disk && bio->bi_bdev)
+ bdput(bio->bi_bdev);
+ blk_rq_unmap_user(bio);
+ }
+err_ppa:
+ if (ppa_buf && ppa_len)
+ dma_pool_free(dev->dma_pool, ppa_list, ppa_dma);
+err_rq:
+ blk_mq_free_request(rq);
+err_cmd:
+ return ret;
+}
+
+static int nvme_nvm_submit_vio(struct nvme_ns *ns,
+ struct nvm_user_vio __user *uvio)
+{
+ struct nvm_user_vio vio;
+ struct nvme_nvm_command c;
+ unsigned int length;
+ int ret;
+
+ if (copy_from_user(&vio, uvio, sizeof(vio)))
+ return -EFAULT;
+ if (vio.flags)
+ return -EINVAL;
+
+ memset(&c, 0, sizeof(c));
+ c.ph_rw.opcode = vio.opcode;
+ c.ph_rw.nsid = cpu_to_le32(ns->ns_id);
+ c.ph_rw.control = cpu_to_le16(vio.control);
+ c.ph_rw.length = cpu_to_le16(vio.nppas);
+
+ length = (vio.nppas + 1) << ns->lba_shift;
+
+ ret = nvme_nvm_submit_user_cmd(ns->queue, ns, &c,
+ (void __user *)(uintptr_t)vio.addr, length,
+ (void __user *)(uintptr_t)vio.metadata,
+ vio.metadata_len,
+ (void __user *)(uintptr_t)vio.ppa_list, vio.nppas,
+ &vio.result, &vio.status, 0);
+
+ if (ret && copy_to_user(uvio, &vio, sizeof(vio)))
+ return -EFAULT;
+
+ return ret;
+}
+
+static int nvme_nvm_user_vcmd(struct nvme_ns *ns, int admin,
+ struct nvm_passthru_vio __user *uvcmd)
+{
+ struct nvm_passthru_vio vcmd;
+ struct nvme_nvm_command c;
+ struct request_queue *q;
+ unsigned int timeout = 0;
+ int ret;
+
+ if (copy_from_user(&vcmd, uvcmd, sizeof(vcmd)))
+ return -EFAULT;
+ if ((vcmd.opcode != 0xF2) && (!capable(CAP_SYS_ADMIN)))
+ return -EACCES;
+ if (vcmd.flags)
+ return -EINVAL;
+
+ memset(&c, 0, sizeof(c));
+ c.common.opcode = vcmd.opcode;
+ c.common.nsid = cpu_to_le32(ns->ns_id);
+ c.common.cdw2[0] = cpu_to_le32(vcmd.cdw2);
+ c.common.cdw2[1] = cpu_to_le32(vcmd.cdw3);
+ /* cdw11-12 */
+ c.ph_rw.length = cpu_to_le16(vcmd.nppas);
+ c.ph_rw.control = cpu_to_le32(vcmd.control);
+ c.common.cdw10[3] = cpu_to_le32(vcmd.cdw13);
+ c.common.cdw10[4] = cpu_to_le32(vcmd.cdw14);
+ c.common.cdw10[5] = cpu_to_le32(vcmd.cdw15);
+
+ if (vcmd.timeout_ms)
+ timeout = msecs_to_jiffies(vcmd.timeout_ms);
+
+ q = admin ? ns->ctrl->admin_q : ns->queue;
+
+ ret = nvme_nvm_submit_user_cmd(q, ns,
+ (struct nvme_nvm_command *)&c,
+ (void __user *)(uintptr_t)vcmd.addr, vcmd.data_len,
+ (void __user *)(uintptr_t)vcmd.metadata,
+ vcmd.metadata_len,
+ (void __user *)(uintptr_t)vcmd.ppa_list, vcmd.nppas,
+ &vcmd.result, &vcmd.status, timeout);
+
+ if (ret && copy_to_user(uvcmd, &vcmd, sizeof(vcmd)))
+ return -EFAULT;
+
+ return ret;
+}
+
+int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case NVME_NVM_IOCTL_ADMIN_VIO:
+ return nvme_nvm_user_vcmd(ns, 1, (void __user *)arg);
+ case NVME_NVM_IOCTL_IO_VIO:
+ return nvme_nvm_user_vcmd(ns, 0, (void __user *)arg);
+ case NVME_NVM_IOCTL_SUBMIT_VIO:
+ return nvme_nvm_submit_vio(ns, (void __user *)arg);
+ default:
+ return -ENOTTY;
+ }
+}
+
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
{
struct request_queue *q = ns->queue;
@@ -622,7 +840,7 @@ static ssize_t nvm_dev_attr_show(struct device *dev,
return 0;
id = &ndev->identity;
- grp = &id->groups[0];
+ grp = &id->grp;
attr = &dattr->attr;
if (strcmp(attr->name, "version") == 0) {
@@ -633,10 +851,9 @@ static ssize_t nvm_dev_attr_show(struct device *dev,
return scnprintf(page, PAGE_SIZE, "%u\n", id->cap);
} else if (strcmp(attr->name, "device_mode") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->dom);
+ /* kept for compatibility */
} else if (strcmp(attr->name, "media_manager") == 0) {
- if (!ndev->mt)
- return scnprintf(page, PAGE_SIZE, "%s\n", "none");
- return scnprintf(page, PAGE_SIZE, "%s\n", ndev->mt->name);
+ return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm");
} else if (strcmp(attr->name, "ppa_format") == 0) {
return scnprintf(page, PAGE_SIZE,
"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index aead6d0..14cfc6f 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -19,6 +19,7 @@
#include <linux/kref.h>
#include <linux/blk-mq.h>
#include <linux/lightnvm.h>
+#include <linux/sed-opal.h>
enum {
/*
@@ -125,6 +126,8 @@ struct nvme_ctrl {
struct list_head node;
struct ida ns_ida;
+ struct opal_dev *opal_dev;
+
char name[12];
char serial[20];
char model[40];
@@ -137,6 +140,7 @@ struct nvme_ctrl {
u32 max_hw_sectors;
u16 oncs;
u16 vid;
+ u16 oacs;
atomic_t abort_limit;
u8 event_limit;
u8 vwc;
@@ -267,6 +271,9 @@ int nvme_init_identify(struct nvme_ctrl *ctrl);
void nvme_queue_scan(struct nvme_ctrl *ctrl);
void nvme_remove_namespaces(struct nvme_ctrl *ctrl);
+int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len,
+ bool send);
+
#define NVME_NR_AERS 1
void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
union nvme_result *res);
@@ -318,6 +325,7 @@ int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
void nvme_nvm_unregister(struct nvme_ns *ns);
int nvme_nvm_register_sysfs(struct nvme_ns *ns);
void nvme_nvm_unregister_sysfs(struct nvme_ns *ns);
+int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg);
#else
static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name,
int node)
@@ -335,6 +343,11 @@ static inline int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *i
{
return 0;
}
+static inline int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd,
+ unsigned long arg)
+{
+ return -ENOTTY;
+}
#endif /* CONFIG_NVM */
static inline struct nvme_ns *nvme_get_ns_from_dev(struct device *dev)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 3faefab..ddc51ad 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -43,6 +43,7 @@
#include <linux/types.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <asm/unaligned.h>
+#include <linux/sed-opal.h>
#include "nvme.h"
@@ -588,7 +589,7 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
*/
if (ns && ns->ms && !blk_integrity_rq(req)) {
if (!(ns->pi_type && ns->ms == 8) &&
- req->cmd_type != REQ_TYPE_DRV_PRIV) {
+ !blk_rq_is_passthrough(req)) {
blk_mq_end_request(req, -EFAULT);
return BLK_MQ_RQ_QUEUE_OK;
}
@@ -645,7 +646,7 @@ static void nvme_complete_rq(struct request *req)
return;
}
- if (req->cmd_type == REQ_TYPE_DRV_PRIV)
+ if (blk_rq_is_passthrough(req))
error = req->errors;
else
error = nvme_error_status(req->errors);
@@ -895,12 +896,11 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req, bool reserved)
return BLK_EH_HANDLED;
}
- iod->aborted = 1;
-
if (atomic_dec_return(&dev->ctrl.abort_limit) < 0) {
atomic_inc(&dev->ctrl.abort_limit);
return BLK_EH_RESET_TIMER;
}
+ iod->aborted = 1;
memset(&cmd, 0, sizeof(cmd));
cmd.abort.opcode = nvme_admin_abort_cmd;
@@ -1178,6 +1178,7 @@ static int nvme_alloc_admin_tags(struct nvme_dev *dev)
dev->admin_tagset.timeout = ADMIN_TIMEOUT;
dev->admin_tagset.numa_node = dev_to_node(dev->dev);
dev->admin_tagset.cmd_size = nvme_cmd_size(dev);
+ dev->admin_tagset.flags = BLK_MQ_F_NO_SCHED;
dev->admin_tagset.driver_data = dev;
if (blk_mq_alloc_tag_set(&dev->admin_tagset))
@@ -1738,6 +1739,7 @@ static void nvme_pci_free_ctrl(struct nvme_ctrl *ctrl)
if (dev->ctrl.admin_q)
blk_put_queue(dev->ctrl.admin_q);
kfree(dev->queues);
+ kfree(dev->ctrl.opal_dev);
kfree(dev);
}
@@ -1754,6 +1756,7 @@ static void nvme_remove_dead_ctrl(struct nvme_dev *dev, int status)
static void nvme_reset_work(struct work_struct *work)
{
struct nvme_dev *dev = container_of(work, struct nvme_dev, reset_work);
+ bool was_suspend = !!(dev->ctrl.ctrl_config & NVME_CC_SHN_NORMAL);
int result = -ENODEV;
if (WARN_ON(dev->ctrl.state == NVME_CTRL_RESETTING))
@@ -1786,6 +1789,14 @@ static void nvme_reset_work(struct work_struct *work)
if (result)
goto out;
+ if ((dev->ctrl.oacs & NVME_CTRL_OACS_SEC_SUPP) && !dev->ctrl.opal_dev) {
+ dev->ctrl.opal_dev =
+ init_opal_dev(&dev->ctrl, &nvme_sec_submit);
+ }
+
+ if (was_suspend)
+ opal_unlock_from_suspend(dev->ctrl.opal_dev);
+
result = nvme_setup_io_queues(dev);
if (result)
goto out;
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 557f29b..a75e95d 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1423,7 +1423,7 @@ static inline bool nvme_rdma_queue_is_ready(struct nvme_rdma_queue *queue,
if (unlikely(!test_bit(NVME_RDMA_Q_LIVE, &queue->flags))) {
struct nvme_command *cmd = nvme_req(rq)->cmd;
- if (rq->cmd_type != REQ_TYPE_DRV_PRIV ||
+ if (!blk_rq_is_passthrough(rq) ||
cmd->common.opcode != nvme_fabrics_command ||
cmd->fabrics.fctype != nvme_fabrics_type_connect)
return false;
@@ -1471,7 +1471,7 @@ static int nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx,
ib_dma_sync_single_for_device(dev, sqe->dma,
sizeof(struct nvme_command), DMA_TO_DEVICE);
- if (rq->cmd_type == REQ_TYPE_FS && req_op(rq) == REQ_OP_FLUSH)
+ if (req_op(rq) == REQ_OP_FLUSH)
flush = true;
ret = nvme_rdma_post_send(queue, sqe, req->sge, req->num_sge,
req->mr->need_inval ? &req->reg_wr.wr : NULL, flush);
@@ -1522,7 +1522,7 @@ static void nvme_rdma_complete_rq(struct request *rq)
return;
}
- if (rq->cmd_type == REQ_TYPE_DRV_PRIV)
+ if (blk_rq_is_passthrough(rq))
error = rq->errors;
else
error = nvme_error_status(rq->errors);
diff --git a/drivers/nvme/host/scsi.c b/drivers/nvme/host/scsi.c
index a5c09e7..f49ae27 100644
--- a/drivers/nvme/host/scsi.c
+++ b/drivers/nvme/host/scsi.c
@@ -43,6 +43,7 @@
#include <asm/unaligned.h>
#include <scsi/sg.h>
#include <scsi/scsi.h>
+#include <scsi/scsi_request.h>
#include "nvme.h"
@@ -2347,12 +2348,14 @@ static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr,
static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr)
{
- u8 cmd[BLK_MAX_CDB];
+ u8 cmd[16];
int retcode;
unsigned int opcode;
if (hdr->cmdp == NULL)
return -EMSGSIZE;
+ if (hdr->cmd_len > sizeof(cmd))
+ return -EINVAL;
if (copy_from_user(cmd, hdr->cmdp, hdr->cmd_len))
return -EFAULT;
@@ -2451,8 +2454,6 @@ int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr)
return -EFAULT;
if (hdr.interface_id != 'S')
return -EINVAL;
- if (hdr.cmd_len > BLK_MAX_CDB)
- return -EINVAL;
/*
* A positive return code means a NVMe status, which has been
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 9aaa700..f3862e3 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -104,7 +104,7 @@ static void nvme_loop_complete_rq(struct request *req)
return;
}
- if (req->cmd_type == REQ_TYPE_DRV_PRIV)
+ if (blk_rq_is_passthrough(req))
error = req->errors;
else
error = nvme_error_status(req->errors);
diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c
index 9f16ea6..152de68 100644
--- a/drivers/s390/block/scm_blk.c
+++ b/drivers/s390/block/scm_blk.c
@@ -300,13 +300,6 @@ static void scm_blk_request(struct request_queue *rq)
struct request *req;
while ((req = blk_peek_request(rq))) {
- if (req->cmd_type != REQ_TYPE_FS) {
- blk_start_request(req);
- blk_dump_rq_flags(req, KMSG_COMPONENT " bad request");
- __blk_end_request_all(req, -EIO);
- continue;
- }
-
if (!scm_permit_request(bdev, req))
goto out;
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index a4f6b0d..d4023bf 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -18,6 +18,7 @@ config SCSI
depends on BLOCK
select SCSI_DMA if HAS_DMA
select SG_POOL
+ select BLK_SCSI_REQUEST
---help---
If you want to use a SCSI hard disk, SCSI tape drive, SCSI CD-ROM or
any other SCSI device under Linux, say Y and make sure that you know
diff --git a/drivers/scsi/device_handler/scsi_dh_emc.c b/drivers/scsi/device_handler/scsi_dh_emc.c
index 5b80746..4a7679f 100644
--- a/drivers/scsi/device_handler/scsi_dh_emc.c
+++ b/drivers/scsi/device_handler/scsi_dh_emc.c
@@ -88,12 +88,6 @@ struct clariion_dh_data {
*/
unsigned char buffer[CLARIION_BUFFER_SIZE];
/*
- * SCSI sense buffer for commands -- assumes serial issuance
- * and completion sequence of all commands for same multipath.
- */
- unsigned char sense[SCSI_SENSE_BUFFERSIZE];
- unsigned int senselen;
- /*
* LUN state
*/
int lun_state;
@@ -116,44 +110,38 @@ struct clariion_dh_data {
/*
* Parse MODE_SELECT cmd reply.
*/
-static int trespass_endio(struct scsi_device *sdev, char *sense)
+static int trespass_endio(struct scsi_device *sdev,
+ struct scsi_sense_hdr *sshdr)
{
int err = SCSI_DH_IO;
- struct scsi_sense_hdr sshdr;
-
- if (!scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr)) {
- sdev_printk(KERN_ERR, sdev, "%s: Found valid sense data 0x%2x, "
- "0x%2x, 0x%2x while sending CLARiiON trespass "
- "command.\n", CLARIION_NAME, sshdr.sense_key,
- sshdr.asc, sshdr.ascq);
- if ((sshdr.sense_key == 0x05) && (sshdr.asc == 0x04) &&
- (sshdr.ascq == 0x00)) {
- /*
- * Array based copy in progress -- do not send
- * mode_select or copy will be aborted mid-stream.
- */
- sdev_printk(KERN_INFO, sdev, "%s: Array Based Copy in "
- "progress while sending CLARiiON trespass "
- "command.\n", CLARIION_NAME);
- err = SCSI_DH_DEV_TEMP_BUSY;
- } else if ((sshdr.sense_key == 0x02) && (sshdr.asc == 0x04) &&
- (sshdr.ascq == 0x03)) {
- /*
- * LUN Not Ready - Manual Intervention Required
- * indicates in-progress ucode upgrade (NDU).
- */
- sdev_printk(KERN_INFO, sdev, "%s: Detected in-progress "
- "ucode upgrade NDU operation while sending "
- "CLARiiON trespass command.\n", CLARIION_NAME);
- err = SCSI_DH_DEV_TEMP_BUSY;
- } else
- err = SCSI_DH_DEV_FAILED;
- } else {
- sdev_printk(KERN_INFO, sdev,
- "%s: failed to send MODE SELECT, no sense available\n",
- CLARIION_NAME);
- }
+ sdev_printk(KERN_ERR, sdev, "%s: Found valid sense data 0x%2x, "
+ "0x%2x, 0x%2x while sending CLARiiON trespass "
+ "command.\n", CLARIION_NAME, sshdr->sense_key,
+ sshdr->asc, sshdr->ascq);
+
+ if (sshdr->sense_key == 0x05 && sshdr->asc == 0x04 &&
+ sshdr->ascq == 0x00) {
+ /*
+ * Array based copy in progress -- do not send
+ * mode_select or copy will be aborted mid-stream.
+ */
+ sdev_printk(KERN_INFO, sdev, "%s: Array Based Copy in "
+ "progress while sending CLARiiON trespass "
+ "command.\n", CLARIION_NAME);
+ err = SCSI_DH_DEV_TEMP_BUSY;
+ } else if (sshdr->sense_key == 0x02 && sshdr->asc == 0x04 &&
+ sshdr->ascq == 0x03) {
+ /*
+ * LUN Not Ready - Manual Intervention Required
+ * indicates in-progress ucode upgrade (NDU).
+ */
+ sdev_printk(KERN_INFO, sdev, "%s: Detected in-progress "
+ "ucode upgrade NDU operation while sending "
+ "CLARiiON trespass command.\n", CLARIION_NAME);
+ err = SCSI_DH_DEV_TEMP_BUSY;
+ } else
+ err = SCSI_DH_DEV_FAILED;
return err;
}
@@ -257,103 +245,15 @@ out:
return sp_model;
}
-/*
- * Get block request for REQ_BLOCK_PC command issued to path. Currently
- * limited to MODE_SELECT (trespass) and INQUIRY (VPD page 0xC0) commands.
- *
- * Uses data and sense buffers in hardware handler context structure and
- * assumes serial servicing of commands, both issuance and completion.
- */
-static struct request *get_req(struct scsi_device *sdev, int cmd,
- unsigned char *buffer)
-{
- struct request *rq;
- int len = 0;
-
- rq = blk_get_request(sdev->request_queue,
- (cmd != INQUIRY) ? WRITE : READ, GFP_NOIO);
- if (IS_ERR(rq)) {
- sdev_printk(KERN_INFO, sdev, "get_req: blk_get_request failed");
- return NULL;
- }
-
- blk_rq_set_block_pc(rq);
- rq->cmd_len = COMMAND_SIZE(cmd);
- rq->cmd[0] = cmd;
-
- switch (cmd) {
- case MODE_SELECT:
- len = sizeof(short_trespass);
- rq->cmd[1] = 0x10;
- rq->cmd[4] = len;
- break;
- case MODE_SELECT_10:
- len = sizeof(long_trespass);
- rq->cmd[1] = 0x10;
- rq->cmd[8] = len;
- break;
- case INQUIRY:
- len = CLARIION_BUFFER_SIZE;
- rq->cmd[4] = len;
- memset(buffer, 0, len);
- break;
- default:
- BUG_ON(1);
- break;
- }
-
- rq->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
- REQ_FAILFAST_DRIVER;
- rq->timeout = CLARIION_TIMEOUT;
- rq->retries = CLARIION_RETRIES;
-
- if (blk_rq_map_kern(rq->q, rq, buffer, len, GFP_NOIO)) {
- blk_put_request(rq);
- return NULL;
- }
-
- return rq;
-}
-
-static int send_inquiry_cmd(struct scsi_device *sdev, int page,
- struct clariion_dh_data *csdev)
-{
- struct request *rq = get_req(sdev, INQUIRY, csdev->buffer);
- int err;
-
- if (!rq)
- return SCSI_DH_RES_TEMP_UNAVAIL;
-
- rq->sense = csdev->sense;
- memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = csdev->senselen = 0;
-
- rq->cmd[0] = INQUIRY;
- if (page != 0) {
- rq->cmd[1] = 1;
- rq->cmd[2] = page;
- }
- err = blk_execute_rq(sdev->request_queue, NULL, rq, 1);
- if (err == -EIO) {
- sdev_printk(KERN_INFO, sdev,
- "%s: failed to send %s INQUIRY: %x\n",
- CLARIION_NAME, page?"EVPD":"standard",
- rq->errors);
- csdev->senselen = rq->sense_len;
- err = SCSI_DH_IO;
- }
-
- blk_put_request(rq);
-
- return err;
-}
-
static int send_trespass_cmd(struct scsi_device *sdev,
struct clariion_dh_data *csdev)
{
- struct request *rq;
unsigned char *page22;
- int err, len, cmd;
+ unsigned char cdb[COMMAND_SIZE(MODE_SELECT)];
+ int err, res = SCSI_DH_OK, len;
+ struct scsi_sense_hdr sshdr;
+ u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
+ REQ_FAILFAST_DRIVER;
if (csdev->flags & CLARIION_SHORT_TRESPASS) {
page22 = short_trespass;
@@ -361,40 +261,37 @@ static int send_trespass_cmd(struct scsi_device *sdev,
/* Set Honor Reservations bit */
page22[6] |= 0x80;
len = sizeof(short_trespass);
- cmd = MODE_SELECT;
+ cdb[0] = MODE_SELECT;
+ cdb[1] = 0x10;
+ cdb[4] = len;
} else {
page22 = long_trespass;
if (!(csdev->flags & CLARIION_HONOR_RESERVATIONS))
/* Set Honor Reservations bit */
page22[10] |= 0x80;
len = sizeof(long_trespass);
- cmd = MODE_SELECT_10;
+ cdb[0] = MODE_SELECT_10;
+ cdb[8] = len;
}
BUG_ON((len > CLARIION_BUFFER_SIZE));
memcpy(csdev->buffer, page22, len);
- rq = get_req(sdev, cmd, csdev->buffer);
- if (!rq)
- return SCSI_DH_RES_TEMP_UNAVAIL;
-
- rq->sense = csdev->sense;
- memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = csdev->senselen = 0;
-
- err = blk_execute_rq(sdev->request_queue, NULL, rq, 1);
- if (err == -EIO) {
- if (rq->sense_len) {
- err = trespass_endio(sdev, csdev->sense);
- } else {
+ err = scsi_execute_req_flags(sdev, cdb, DMA_TO_DEVICE,
+ csdev->buffer, len, &sshdr,
+ CLARIION_TIMEOUT * HZ, CLARIION_RETRIES,
+ NULL, req_flags, 0);
+ if (err) {
+ if (scsi_sense_valid(&sshdr))
+ res = trespass_endio(sdev, &sshdr);
+ else {
sdev_printk(KERN_INFO, sdev,
"%s: failed to send MODE SELECT: %x\n",
- CLARIION_NAME, rq->errors);
+ CLARIION_NAME, err);
+ res = SCSI_DH_IO;
}
}
- blk_put_request(rq);
-
- return err;
+ return res;
}
static int clariion_check_sense(struct scsi_device *sdev,
@@ -464,21 +361,7 @@ static int clariion_std_inquiry(struct scsi_device *sdev,
int err;
char *sp_model;
- err = send_inquiry_cmd(sdev, 0, csdev);
- if (err != SCSI_DH_OK && csdev->senselen) {
- struct scsi_sense_hdr sshdr;
-
- if (scsi_normalize_sense(csdev->sense, SCSI_SENSE_BUFFERSIZE,
- &sshdr)) {
- sdev_printk(KERN_ERR, sdev, "%s: INQUIRY sense code "
- "%02x/%02x/%02x\n", CLARIION_NAME,
- sshdr.sense_key, sshdr.asc, sshdr.ascq);
- }
- err = SCSI_DH_IO;
- goto out;
- }
-
- sp_model = parse_sp_model(sdev, csdev->buffer);
+ sp_model = parse_sp_model(sdev, sdev->inquiry);
if (!sp_model) {
err = SCSI_DH_DEV_UNSUPP;
goto out;
@@ -500,30 +383,12 @@ out:
static int clariion_send_inquiry(struct scsi_device *sdev,
struct clariion_dh_data *csdev)
{
- int err, retry = CLARIION_RETRIES;
-
-retry:
- err = send_inquiry_cmd(sdev, 0xC0, csdev);
- if (err != SCSI_DH_OK && csdev->senselen) {
- struct scsi_sense_hdr sshdr;
-
- err = scsi_normalize_sense(csdev->sense, SCSI_SENSE_BUFFERSIZE,
- &sshdr);
- if (!err)
- return SCSI_DH_IO;
-
- err = clariion_check_sense(sdev, &sshdr);
- if (retry > 0 && err == ADD_TO_MLQUEUE) {
- retry--;
- goto retry;
- }
- sdev_printk(KERN_ERR, sdev, "%s: INQUIRY sense code "
- "%02x/%02x/%02x\n", CLARIION_NAME,
- sshdr.sense_key, sshdr.asc, sshdr.ascq);
- err = SCSI_DH_IO;
- } else {
+ int err = SCSI_DH_IO;
+
+ if (!scsi_get_vpd_page(sdev, 0xC0, csdev->buffer,
+ CLARIION_BUFFER_SIZE))
err = parse_sp_info_reply(sdev, csdev);
- }
+
return err;
}
diff --git a/drivers/scsi/device_handler/scsi_dh_hp_sw.c b/drivers/scsi/device_handler/scsi_dh_hp_sw.c
index 308e871..be43c94 100644
--- a/drivers/scsi/device_handler/scsi_dh_hp_sw.c
+++ b/drivers/scsi/device_handler/scsi_dh_hp_sw.c
@@ -38,13 +38,10 @@
#define HP_SW_PATH_PASSIVE 1
struct hp_sw_dh_data {
- unsigned char sense[SCSI_SENSE_BUFFERSIZE];
int path_state;
int retries;
int retry_cnt;
struct scsi_device *sdev;
- activate_complete callback_fn;
- void *callback_data;
};
static int hp_sw_start_stop(struct hp_sw_dh_data *);
@@ -56,43 +53,34 @@ static int hp_sw_start_stop(struct hp_sw_dh_data *);
*
* Returns SCSI_DH_DEV_OFFLINED if the sdev is on the passive path
*/
-static int tur_done(struct scsi_device *sdev, unsigned char *sense)
+static int tur_done(struct scsi_device *sdev, struct hp_sw_dh_data *h,
+ struct scsi_sense_hdr *sshdr)
{
- struct scsi_sense_hdr sshdr;
- int ret;
+ int ret = SCSI_DH_IO;
- ret = scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr);
- if (!ret) {
- sdev_printk(KERN_WARNING, sdev,
- "%s: sending tur failed, no sense available\n",
- HP_SW_NAME);
- ret = SCSI_DH_IO;
- goto done;
- }
- switch (sshdr.sense_key) {
+ switch (sshdr->sense_key) {
case UNIT_ATTENTION:
ret = SCSI_DH_IMM_RETRY;
break;
case NOT_READY:
- if ((sshdr.asc == 0x04) && (sshdr.ascq == 2)) {
+ if (sshdr->asc == 0x04 && sshdr->ascq == 2) {
/*
* LUN not ready - Initialization command required
*
* This is the passive path
*/
- ret = SCSI_DH_DEV_OFFLINED;
+ h->path_state = HP_SW_PATH_PASSIVE;
+ ret = SCSI_DH_OK;
break;
}
/* Fallthrough */
default:
sdev_printk(KERN_WARNING, sdev,
"%s: sending tur failed, sense %x/%x/%x\n",
- HP_SW_NAME, sshdr.sense_key, sshdr.asc,
- sshdr.ascq);
+ HP_SW_NAME, sshdr->sense_key, sshdr->asc,
+ sshdr->ascq);
break;
}
-
-done:
return ret;
}
@@ -105,131 +93,36 @@ done:
*/
static int hp_sw_tur(struct scsi_device *sdev, struct hp_sw_dh_data *h)
{
- struct request *req;
- int ret;
+ unsigned char cmd[6] = { TEST_UNIT_READY };
+ struct scsi_sense_hdr sshdr;
+ int ret = SCSI_DH_OK, res;
+ u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
+ REQ_FAILFAST_DRIVER;
retry:
- req = blk_get_request(sdev->request_queue, WRITE, GFP_NOIO);
- if (IS_ERR(req))
- return SCSI_DH_RES_TEMP_UNAVAIL;
-
- blk_rq_set_block_pc(req);
- req->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
- REQ_FAILFAST_DRIVER;
- req->cmd_len = COMMAND_SIZE(TEST_UNIT_READY);
- req->cmd[0] = TEST_UNIT_READY;
- req->timeout = HP_SW_TIMEOUT;
- req->sense = h->sense;
- memset(req->sense, 0, SCSI_SENSE_BUFFERSIZE);
- req->sense_len = 0;
-
- ret = blk_execute_rq(req->q, NULL, req, 1);
- if (ret == -EIO) {
- if (req->sense_len > 0) {
- ret = tur_done(sdev, h->sense);
- } else {
+ res = scsi_execute_req_flags(sdev, cmd, DMA_NONE, NULL, 0, &sshdr,
+ HP_SW_TIMEOUT, HP_SW_RETRIES,
+ NULL, req_flags, 0);
+ if (res) {
+ if (scsi_sense_valid(&sshdr))
+ ret = tur_done(sdev, h, &sshdr);
+ else {
sdev_printk(KERN_WARNING, sdev,
"%s: sending tur failed with %x\n",
- HP_SW_NAME, req->errors);
+ HP_SW_NAME, res);
ret = SCSI_DH_IO;
}
} else {
h->path_state = HP_SW_PATH_ACTIVE;
ret = SCSI_DH_OK;
}
- if (ret == SCSI_DH_IMM_RETRY) {
- blk_put_request(req);
+ if (ret == SCSI_DH_IMM_RETRY)
goto retry;
- }
- if (ret == SCSI_DH_DEV_OFFLINED) {
- h->path_state = HP_SW_PATH_PASSIVE;
- ret = SCSI_DH_OK;
- }
-
- blk_put_request(req);
return ret;
}
/*
- * start_done - Handle START STOP UNIT return status
- * @sdev: sdev the command has been sent to
- * @errors: blk error code
- */
-static int start_done(struct scsi_device *sdev, unsigned char *sense)
-{
- struct scsi_sense_hdr sshdr;
- int rc;
-
- rc = scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr);
- if (!rc) {
- sdev_printk(KERN_WARNING, sdev,
- "%s: sending start_stop_unit failed, "
- "no sense available\n",
- HP_SW_NAME);
- return SCSI_DH_IO;
- }
- switch (sshdr.sense_key) {
- case NOT_READY:
- if ((sshdr.asc == 0x04) && (sshdr.ascq == 3)) {
- /*
- * LUN not ready - manual intervention required
- *
- * Switch-over in progress, retry.
- */
- rc = SCSI_DH_RETRY;
- break;
- }
- /* fall through */
- default:
- sdev_printk(KERN_WARNING, sdev,
- "%s: sending start_stop_unit failed, sense %x/%x/%x\n",
- HP_SW_NAME, sshdr.sense_key, sshdr.asc,
- sshdr.ascq);
- rc = SCSI_DH_IO;
- }
-
- return rc;
-}
-
-static void start_stop_endio(struct request *req, int error)
-{
- struct hp_sw_dh_data *h = req->end_io_data;
- unsigned err = SCSI_DH_OK;
-
- if (error || host_byte(req->errors) != DID_OK ||
- msg_byte(req->errors) != COMMAND_COMPLETE) {
- sdev_printk(KERN_WARNING, h->sdev,
- "%s: sending start_stop_unit failed with %x\n",
- HP_SW_NAME, req->errors);
- err = SCSI_DH_IO;
- goto done;
- }
-
- if (req->sense_len > 0) {
- err = start_done(h->sdev, h->sense);
- if (err == SCSI_DH_RETRY) {
- err = SCSI_DH_IO;
- if (--h->retry_cnt) {
- blk_put_request(req);
- err = hp_sw_start_stop(h);
- if (err == SCSI_DH_OK)
- return;
- }
- }
- }
-done:
- req->end_io_data = NULL;
- __blk_put_request(req->q, req);
- if (h->callback_fn) {
- h->callback_fn(h->callback_data, err);
- h->callback_fn = h->callback_data = NULL;
- }
- return;
-
-}
-
-/*
* hp_sw_start_stop - Send START STOP UNIT command
* @sdev: sdev command should be sent to
*
@@ -237,26 +130,48 @@ done:
*/
static int hp_sw_start_stop(struct hp_sw_dh_data *h)
{
- struct request *req;
-
- req = blk_get_request(h->sdev->request_queue, WRITE, GFP_ATOMIC);
- if (IS_ERR(req))
- return SCSI_DH_RES_TEMP_UNAVAIL;
-
- blk_rq_set_block_pc(req);
- req->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
- REQ_FAILFAST_DRIVER;
- req->cmd_len = COMMAND_SIZE(START_STOP);
- req->cmd[0] = START_STOP;
- req->cmd[4] = 1; /* Start spin cycle */
- req->timeout = HP_SW_TIMEOUT;
- req->sense = h->sense;
- memset(req->sense, 0, SCSI_SENSE_BUFFERSIZE);
- req->sense_len = 0;
- req->end_io_data = h;
+ unsigned char cmd[6] = { START_STOP, 0, 0, 0, 1, 0 };
+ struct scsi_sense_hdr sshdr;
+ struct scsi_device *sdev = h->sdev;
+ int res, rc = SCSI_DH_OK;
+ int retry_cnt = HP_SW_RETRIES;
+ u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
+ REQ_FAILFAST_DRIVER;
- blk_execute_rq_nowait(req->q, NULL, req, 1, start_stop_endio);
- return SCSI_DH_OK;
+retry:
+ res = scsi_execute_req_flags(sdev, cmd, DMA_NONE, NULL, 0, &sshdr,
+ HP_SW_TIMEOUT, HP_SW_RETRIES,
+ NULL, req_flags, 0);
+ if (res) {
+ if (!scsi_sense_valid(&sshdr)) {
+ sdev_printk(KERN_WARNING, sdev,
+ "%s: sending start_stop_unit failed, "
+ "no sense available\n", HP_SW_NAME);
+ return SCSI_DH_IO;
+ }
+ switch (sshdr.sense_key) {
+ case NOT_READY:
+ if (sshdr.asc == 0x04 && sshdr.ascq == 3) {
+ /*
+ * LUN not ready - manual intervention required
+ *
+ * Switch-over in progress, retry.
+ */
+ if (--retry_cnt)
+ goto retry;
+ rc = SCSI_DH_RETRY;
+ break;
+ }
+ /* fall through */
+ default:
+ sdev_printk(KERN_WARNING, sdev,
+ "%s: sending start_stop_unit failed, "
+ "sense %x/%x/%x\n", HP_SW_NAME,
+ sshdr.sense_key, sshdr.asc, sshdr.ascq);
+ rc = SCSI_DH_IO;
+ }
+ }
+ return rc;
}
static int hp_sw_prep_fn(struct scsi_device *sdev, struct request *req)
@@ -290,15 +205,8 @@ static int hp_sw_activate(struct scsi_device *sdev,
ret = hp_sw_tur(sdev, h);
- if (ret == SCSI_DH_OK && h->path_state == HP_SW_PATH_PASSIVE) {
- h->retry_cnt = h->retries;
- h->callback_fn = fn;
- h->callback_data = data;
+ if (ret == SCSI_DH_OK && h->path_state == HP_SW_PATH_PASSIVE)
ret = hp_sw_start_stop(h);
- if (ret == SCSI_DH_OK)
- return 0;
- h->callback_fn = h->callback_data = NULL;
- }
if (fn)
fn(data, ret);
diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c
index 00d9c32..b64eaae 100644
--- a/drivers/scsi/device_handler/scsi_dh_rdac.c
+++ b/drivers/scsi/device_handler/scsi_dh_rdac.c
@@ -205,7 +205,6 @@ struct rdac_dh_data {
#define RDAC_NON_PREFERRED 1
char preferred;
- unsigned char sense[SCSI_SENSE_BUFFERSIZE];
union {
struct c2_inquiry c2;
struct c4_inquiry c4;
@@ -262,40 +261,12 @@ do { \
sdev_printk(KERN_INFO, sdev, RDAC_NAME ": " f "\n", ## arg); \
} while (0);
-static struct request *get_rdac_req(struct scsi_device *sdev,
- void *buffer, unsigned buflen, int rw)
+static unsigned int rdac_failover_get(struct rdac_controller *ctlr,
+ struct list_head *list,
+ unsigned char *cdb)
{
- struct request *rq;
- struct request_queue *q = sdev->request_queue;
-
- rq = blk_get_request(q, rw, GFP_NOIO);
-
- if (IS_ERR(rq)) {
- sdev_printk(KERN_INFO, sdev,
- "get_rdac_req: blk_get_request failed.\n");
- return NULL;
- }
- blk_rq_set_block_pc(rq);
-
- if (buflen && blk_rq_map_kern(q, rq, buffer, buflen, GFP_NOIO)) {
- blk_put_request(rq);
- sdev_printk(KERN_INFO, sdev,
- "get_rdac_req: blk_rq_map_kern failed.\n");
- return NULL;
- }
-
- rq->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
- REQ_FAILFAST_DRIVER;
- rq->retries = RDAC_RETRIES;
- rq->timeout = RDAC_TIMEOUT;
-
- return rq;
-}
-
-static struct request *rdac_failover_get(struct scsi_device *sdev,
- struct rdac_dh_data *h, struct list_head *list)
-{
- struct request *rq;
+ struct scsi_device *sdev = ctlr->ms_sdev;
+ struct rdac_dh_data *h = sdev->handler_data;
struct rdac_mode_common *common;
unsigned data_size;
struct rdac_queue_data *qdata;
@@ -332,27 +303,17 @@ static struct request *rdac_failover_get(struct scsi_device *sdev,
lun_table[qdata->h->lun] = 0x81;
}
- /* get request for block layer packet command */
- rq = get_rdac_req(sdev, &h->ctlr->mode_select, data_size, WRITE);
- if (!rq)
- return NULL;
-
/* Prepare the command. */
if (h->ctlr->use_ms10) {
- rq->cmd[0] = MODE_SELECT_10;
- rq->cmd[7] = data_size >> 8;
- rq->cmd[8] = data_size & 0xff;
+ cdb[0] = MODE_SELECT_10;
+ cdb[7] = data_size >> 8;
+ cdb[8] = data_size & 0xff;
} else {
- rq->cmd[0] = MODE_SELECT;
- rq->cmd[4] = data_size;
+ cdb[0] = MODE_SELECT;
+ cdb[4] = data_size;
}
- rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
-
- rq->sense = h->sense;
- memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = 0;
- return rq;
+ return data_size;
}
static void release_controller(struct kref *kref)
@@ -400,46 +361,14 @@ static struct rdac_controller *get_controller(int index, char *array_name,
return ctlr;
}
-static int submit_inquiry(struct scsi_device *sdev, int page_code,
- unsigned int len, struct rdac_dh_data *h)
-{
- struct request *rq;
- struct request_queue *q = sdev->request_queue;
- int err = SCSI_DH_RES_TEMP_UNAVAIL;
-
- rq = get_rdac_req(sdev, &h->inq, len, READ);
- if (!rq)
- goto done;
-
- /* Prepare the command. */
- rq->cmd[0] = INQUIRY;
- rq->cmd[1] = 1;
- rq->cmd[2] = page_code;
- rq->cmd[4] = len;
- rq->cmd_len = COMMAND_SIZE(INQUIRY);
-
- rq->sense = h->sense;
- memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = 0;
-
- err = blk_execute_rq(q, NULL, rq, 1);
- if (err == -EIO)
- err = SCSI_DH_IO;
-
- blk_put_request(rq);
-done:
- return err;
-}
-
static int get_lun_info(struct scsi_device *sdev, struct rdac_dh_data *h,
char *array_name, u8 *array_id)
{
- int err, i;
- struct c8_inquiry *inqp;
+ int err = SCSI_DH_IO, i;
+ struct c8_inquiry *inqp = &h->inq.c8;
- err = submit_inquiry(sdev, 0xC8, sizeof(struct c8_inquiry), h);
- if (err == SCSI_DH_OK) {
- inqp = &h->inq.c8;
+ if (!scsi_get_vpd_page(sdev, 0xC8, (unsigned char *)inqp,
+ sizeof(struct c8_inquiry))) {
if (inqp->page_code != 0xc8)
return SCSI_DH_NOSYS;
if (inqp->page_id[0] != 'e' || inqp->page_id[1] != 'd' ||
@@ -453,20 +382,20 @@ static int get_lun_info(struct scsi_device *sdev, struct rdac_dh_data *h,
*(array_name+ARRAY_LABEL_LEN-1) = '\0';
memset(array_id, 0, UNIQUE_ID_LEN);
memcpy(array_id, inqp->array_unique_id, inqp->array_uniq_id_len);
+ err = SCSI_DH_OK;
}
return err;
}
static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h)
{
- int err, access_state;
+ int err = SCSI_DH_IO, access_state;
struct rdac_dh_data *tmp;
- struct c9_inquiry *inqp;
+ struct c9_inquiry *inqp = &h->inq.c9;
h->state = RDAC_STATE_ACTIVE;
- err = submit_inquiry(sdev, 0xC9, sizeof(struct c9_inquiry), h);
- if (err == SCSI_DH_OK) {
- inqp = &h->inq.c9;
+ if (!scsi_get_vpd_page(sdev, 0xC9, (unsigned char *)inqp,
+ sizeof(struct c9_inquiry))) {
/* detect the operating mode */
if ((inqp->avte_cvp >> 5) & 0x1)
h->mode = RDAC_MODE_IOSHIP; /* LUN in IOSHIP mode */
@@ -501,6 +430,7 @@ static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h)
tmp->sdev->access_state = access_state;
}
rcu_read_unlock();
+ err = SCSI_DH_OK;
}
return err;
@@ -509,12 +439,11 @@ static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h)
static int initialize_controller(struct scsi_device *sdev,
struct rdac_dh_data *h, char *array_name, u8 *array_id)
{
- int err, index;
- struct c4_inquiry *inqp;
+ int err = SCSI_DH_IO, index;
+ struct c4_inquiry *inqp = &h->inq.c4;
- err = submit_inquiry(sdev, 0xC4, sizeof(struct c4_inquiry), h);
- if (err == SCSI_DH_OK) {
- inqp = &h->inq.c4;
+ if (!scsi_get_vpd_page(sdev, 0xC4, (unsigned char *)inqp,
+ sizeof(struct c4_inquiry))) {
/* get the controller index */
if (inqp->slot_id[1] == 0x31)
index = 0;
@@ -530,18 +459,18 @@ static int initialize_controller(struct scsi_device *sdev,
h->sdev = sdev;
}
spin_unlock(&list_lock);
+ err = SCSI_DH_OK;
}
return err;
}
static int set_mode_select(struct scsi_device *sdev, struct rdac_dh_data *h)
{
- int err;
- struct c2_inquiry *inqp;
+ int err = SCSI_DH_IO;
+ struct c2_inquiry *inqp = &h->inq.c2;
- err = submit_inquiry(sdev, 0xC2, sizeof(struct c2_inquiry), h);
- if (err == SCSI_DH_OK) {
- inqp = &h->inq.c2;
+ if (!scsi_get_vpd_page(sdev, 0xC2, (unsigned char *)inqp,
+ sizeof(struct c2_inquiry))) {
/*
* If more than MODE6_MAX_LUN luns are supported, use
* mode select 10
@@ -550,36 +479,35 @@ static int set_mode_select(struct scsi_device *sdev, struct rdac_dh_data *h)
h->ctlr->use_ms10 = 1;
else
h->ctlr->use_ms10 = 0;
+ err = SCSI_DH_OK;
}
return err;
}
static int mode_select_handle_sense(struct scsi_device *sdev,
- unsigned char *sensebuf)
+ struct scsi_sense_hdr *sense_hdr)
{
- struct scsi_sense_hdr sense_hdr;
- int err = SCSI_DH_IO, ret;
+ int err = SCSI_DH_IO;
struct rdac_dh_data *h = sdev->handler_data;
- ret = scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, &sense_hdr);
- if (!ret)
+ if (!scsi_sense_valid(sense_hdr))
goto done;
- switch (sense_hdr.sense_key) {
+ switch (sense_hdr->sense_key) {
case NO_SENSE:
case ABORTED_COMMAND:
case UNIT_ATTENTION:
err = SCSI_DH_RETRY;
break;
case NOT_READY:
- if (sense_hdr.asc == 0x04 && sense_hdr.ascq == 0x01)
+ if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x01)
/* LUN Not Ready and is in the Process of Becoming
* Ready
*/
err = SCSI_DH_RETRY;
break;
case ILLEGAL_REQUEST:
- if (sense_hdr.asc == 0x91 && sense_hdr.ascq == 0x36)
+ if (sense_hdr->asc == 0x91 && sense_hdr->ascq == 0x36)
/*
* Command Lock contention
*/
@@ -592,7 +520,7 @@ static int mode_select_handle_sense(struct scsi_device *sdev,
RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, "
"MODE_SELECT returned with sense %02x/%02x/%02x",
(char *) h->ctlr->array_name, h->ctlr->index,
- sense_hdr.sense_key, sense_hdr.asc, sense_hdr.ascq);
+ sense_hdr->sense_key, sense_hdr->asc, sense_hdr->ascq);
done:
return err;
@@ -602,13 +530,16 @@ static void send_mode_select(struct work_struct *work)
{
struct rdac_controller *ctlr =
container_of(work, struct rdac_controller, ms_work);
- struct request *rq;
struct scsi_device *sdev = ctlr->ms_sdev;
struct rdac_dh_data *h = sdev->handler_data;
- struct request_queue *q = sdev->request_queue;
- int err, retry_cnt = RDAC_RETRY_COUNT;
+ int err = SCSI_DH_OK, retry_cnt = RDAC_RETRY_COUNT;
struct rdac_queue_data *tmp, *qdata;
LIST_HEAD(list);
+ unsigned char cdb[COMMAND_SIZE(MODE_SELECT_10)];
+ struct scsi_sense_hdr sshdr;
+ unsigned int data_size;
+ u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
+ REQ_FAILFAST_DRIVER;
spin_lock(&ctlr->ms_lock);
list_splice_init(&ctlr->ms_head, &list);
@@ -616,21 +547,19 @@ static void send_mode_select(struct work_struct *work)
ctlr->ms_sdev = NULL;
spin_unlock(&ctlr->ms_lock);
-retry:
- err = SCSI_DH_RES_TEMP_UNAVAIL;
- rq = rdac_failover_get(sdev, h, &list);
- if (!rq)
- goto done;
+ retry:
+ data_size = rdac_failover_get(ctlr, &list, cdb);
RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, "
"%s MODE_SELECT command",
(char *) h->ctlr->array_name, h->ctlr->index,
(retry_cnt == RDAC_RETRY_COUNT) ? "queueing" : "retrying");
- err = blk_execute_rq(q, NULL, rq, 1);
- blk_put_request(rq);
- if (err != SCSI_DH_OK) {
- err = mode_select_handle_sense(sdev, h->sense);
+ if (scsi_execute_req_flags(sdev, cdb, DMA_TO_DEVICE,
+ &h->ctlr->mode_select, data_size, &sshdr,
+ RDAC_TIMEOUT * HZ,
+ RDAC_RETRIES, NULL, req_flags, 0)) {
+ err = mode_select_handle_sense(sdev, &sshdr);
if (err == SCSI_DH_RETRY && retry_cnt--)
goto retry;
if (err == SCSI_DH_IMM_RETRY)
@@ -643,7 +572,6 @@ retry:
(char *) h->ctlr->array_name, h->ctlr->index);
}
-done:
list_for_each_entry_safe(qdata, tmp, &list, entry) {
list_del(&qdata->entry);
if (err == SCSI_DH_OK)
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 258a3f9..831a1c8 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -213,6 +213,10 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
goto fail;
}
+ error = scsi_init_sense_cache(shost);
+ if (error)
+ goto fail;
+
if (shost_use_blk_mq(shost)) {
error = scsi_mq_setup_tags(shost);
if (error)
@@ -226,19 +230,6 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
}
}
- /*
- * Note that we allocate the freelist even for the MQ case for now,
- * as we need a command set aside for scsi_reset_provider. Having
- * the full host freelist and one command available for that is a
- * little heavy-handed, but avoids introducing a special allocator
- * just for this. Eventually the structure of scsi_reset_provider
- * will need a major overhaul.
- */
- error = scsi_setup_command_freelist(shost);
- if (error)
- goto out_destroy_tags;
-
-
if (!shost->shost_gendev.parent)
shost->shost_gendev.parent = dev ? dev : &platform_bus;
if (!dma_dev)
@@ -258,7 +249,7 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
error = device_add(&shost->shost_gendev);
if (error)
- goto out_destroy_freelist;
+ goto out_disable_runtime_pm;
scsi_host_set_state(shost, SHOST_RUNNING);
get_device(shost->shost_gendev.parent);
@@ -308,13 +299,11 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
device_del(&shost->shost_dev);
out_del_gendev:
device_del(&shost->shost_gendev);
- out_destroy_freelist:
+ out_disable_runtime_pm:
device_disable_async_suspend(&shost->shost_gendev);
pm_runtime_disable(&shost->shost_gendev);
pm_runtime_set_suspended(&shost->shost_gendev);
pm_runtime_put_noidle(&shost->shost_gendev);
- scsi_destroy_command_freelist(shost);
- out_destroy_tags:
if (shost_use_blk_mq(shost))
scsi_mq_destroy_tags(shost);
fail:
@@ -355,7 +344,6 @@ static void scsi_host_dev_release(struct device *dev)
kfree(dev_name(&shost->shost_dev));
}
- scsi_destroy_command_freelist(shost);
if (shost_use_blk_mq(shost)) {
if (shost->tag_set.tags)
scsi_mq_destroy_tags(shost);
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index cbc0c5f..c611412 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -5539,8 +5539,8 @@ static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
* Retries always go down the normal I/O path.
*/
if (likely(cmd->retries == 0 &&
- cmd->request->cmd_type == REQ_TYPE_FS &&
- h->acciopath_status)) {
+ !blk_rq_is_passthrough(cmd->request) &&
+ h->acciopath_status)) {
rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
if (rc == 0)
return 0;
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index 919736a..aa76f36 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -2095,7 +2095,7 @@ int fc_lport_bsg_request(struct bsg_job *job)
bsg_reply->reply_payload_rcv_len = 0;
if (rsp)
- rsp->resid_len = job->reply_payload.payload_len;
+ scsi_req(rsp)->resid_len = job->reply_payload.payload_len;
mutex_lock(&lport->lp_mutex);
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 022bb6e..570b2cb 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -2174,12 +2174,12 @@ int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
bio_data(rsp->bio), blk_rq_bytes(rsp));
if (ret > 0) {
/* positive number is the untransferred residual */
- rsp->resid_len = ret;
- req->resid_len = 0;
+ scsi_req(rsp)->resid_len = ret;
+ scsi_req(req)->resid_len = 0;
ret = 0;
} else if (ret == 0) {
- rsp->resid_len = 0;
- req->resid_len = 0;
+ scsi_req(rsp)->resid_len = 0;
+ scsi_req(req)->resid_len = 0;
}
return ret;
diff --git a/drivers/scsi/libsas/sas_host_smp.c b/drivers/scsi/libsas/sas_host_smp.c
index d247925..45cbbc4 100644
--- a/drivers/scsi/libsas/sas_host_smp.c
+++ b/drivers/scsi/libsas/sas_host_smp.c
@@ -274,15 +274,15 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
switch (req_data[1]) {
case SMP_REPORT_GENERAL:
- req->resid_len -= 8;
- rsp->resid_len -= 32;
+ scsi_req(req)->resid_len -= 8;
+ scsi_req(rsp)->resid_len -= 32;
resp_data[2] = SMP_RESP_FUNC_ACC;
resp_data[9] = sas_ha->num_phys;
break;
case SMP_REPORT_MANUF_INFO:
- req->resid_len -= 8;
- rsp->resid_len -= 64;
+ scsi_req(req)->resid_len -= 8;
+ scsi_req(rsp)->resid_len -= 64;
resp_data[2] = SMP_RESP_FUNC_ACC;
memcpy(resp_data + 12, shost->hostt->name,
SAS_EXPANDER_VENDOR_ID_LEN);
@@ -295,13 +295,13 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
break;
case SMP_DISCOVER:
- req->resid_len -= 16;
- if ((int)req->resid_len < 0) {
- req->resid_len = 0;
+ scsi_req(req)->resid_len -= 16;
+ if ((int)scsi_req(req)->resid_len < 0) {
+ scsi_req(req)->resid_len = 0;
error = -EINVAL;
goto out;
}
- rsp->resid_len -= 56;
+ scsi_req(rsp)->resid_len -= 56;
sas_host_smp_discover(sas_ha, resp_data, req_data[9]);
break;
@@ -311,13 +311,13 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
break;
case SMP_REPORT_PHY_SATA:
- req->resid_len -= 16;
- if ((int)req->resid_len < 0) {
- req->resid_len = 0;
+ scsi_req(req)->resid_len -= 16;
+ if ((int)scsi_req(req)->resid_len < 0) {
+ scsi_req(req)->resid_len = 0;
error = -EINVAL;
goto out;
}
- rsp->resid_len -= 60;
+ scsi_req(rsp)->resid_len -= 60;
sas_report_phy_sata(sas_ha, resp_data, req_data[9]);
break;
@@ -331,15 +331,15 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
int to_write = req_data[4];
if (blk_rq_bytes(req) < base_frame_size + to_write * 4 ||
- req->resid_len < base_frame_size + to_write * 4) {
+ scsi_req(req)->resid_len < base_frame_size + to_write * 4) {
resp_data[2] = SMP_RESP_INV_FRM_LEN;
break;
}
to_write = sas_host_smp_write_gpio(sas_ha, resp_data, req_data[2],
req_data[3], to_write, &req_data[8]);
- req->resid_len -= base_frame_size + to_write * 4;
- rsp->resid_len -= 8;
+ scsi_req(req)->resid_len -= base_frame_size + to_write * 4;
+ scsi_req(rsp)->resid_len -= 8;
break;
}
@@ -348,13 +348,13 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
break;
case SMP_PHY_CONTROL:
- req->resid_len -= 44;
- if ((int)req->resid_len < 0) {
- req->resid_len = 0;
+ scsi_req(req)->resid_len -= 44;
+ if ((int)scsi_req(req)->resid_len < 0) {
+ scsi_req(req)->resid_len = 0;
error = -EINVAL;
goto out;
}
- rsp->resid_len -= 8;
+ scsi_req(rsp)->resid_len -= 8;
sas_phy_control(sas_ha, req_data[9], req_data[10],
req_data[32] >> 4, req_data[33] >> 4,
resp_data);
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 0b5b423..c6d5505 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -4723,7 +4723,7 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
* then scsi-ml does not need to handle this misbehavior.
*/
sector_sz = scmd->device->sector_size;
- if (unlikely(scmd->request->cmd_type == REQ_TYPE_FS && sector_sz &&
+ if (unlikely(!blk_rq_is_passthrough(scmd->request) && sector_sz &&
xfer_cnt % sector_sz)) {
sdev_printk(KERN_INFO, scmd->device,
"unaligned partial completion avoided (xfer_cnt=%u, sector_sz=%u)\n",
diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 7f1d578..e7a7a70 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -2057,10 +2057,10 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
ioc->name, __func__,
le16_to_cpu(mpi_reply->ResponseDataLength)));
- memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
- req->sense_len = sizeof(*mpi_reply);
- req->resid_len = 0;
- rsp->resid_len -=
+ memcpy(scsi_req(req)->sense, mpi_reply, sizeof(*mpi_reply));
+ scsi_req(req)->sense_len = sizeof(*mpi_reply);
+ scsi_req(req)->resid_len = 0;
+ scsi_req(rsp)->resid_len -=
le16_to_cpu(mpi_reply->ResponseDataLength);
/* check if the resp needs to be copied from the allocated
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index ef99f62..30b9050 100644
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -48,6 +48,7 @@
#include <scsi/osd_sense.h>
#include <scsi/scsi_device.h>
+#include <scsi/scsi_request.h>
#include "osd_debug.h"
@@ -477,11 +478,13 @@ static void _set_error_resid(struct osd_request *or, struct request *req,
{
or->async_error = error;
or->req_errors = req->errors ? : error;
- or->sense_len = req->sense_len;
+ or->sense_len = scsi_req(req)->sense_len;
+ if (or->sense_len)
+ memcpy(or->sense, scsi_req(req)->sense, or->sense_len);
if (or->out.req)
- or->out.residual = or->out.req->resid_len;
+ or->out.residual = scsi_req(or->out.req)->resid_len;
if (or->in.req)
- or->in.residual = or->in.req->resid_len;
+ or->in.residual = scsi_req(or->in.req)->resid_len;
}
int osd_execute_request(struct osd_request *or)
@@ -1562,10 +1565,11 @@ static struct request *_make_request(struct request_queue *q, bool has_write,
struct bio *bio = oii->bio;
int ret;
- req = blk_get_request(q, has_write ? WRITE : READ, flags);
+ req = blk_get_request(q, has_write ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
+ flags);
if (IS_ERR(req))
return req;
- blk_rq_set_block_pc(req);
+ scsi_req_init(req);
for_each_bio(bio) {
struct bio *bounce_bio = bio;
@@ -1599,8 +1603,6 @@ static int _init_blk_request(struct osd_request *or,
req->timeout = or->timeout;
req->retries = or->retries;
- req->sense = or->sense;
- req->sense_len = 0;
if (has_out) {
or->out.req = req;
@@ -1612,7 +1614,7 @@ static int _init_blk_request(struct osd_request *or,
ret = PTR_ERR(req);
goto out;
}
- blk_rq_set_block_pc(req);
+ scsi_req_init(req);
or->in.req = or->request->next_rq = req;
}
} else if (has_in)
@@ -1699,8 +1701,8 @@ int osd_finalize_request(struct osd_request *or,
osd_sec_sign_cdb(&or->cdb, cap_key);
- or->request->cmd = or->cdb.buff;
- or->request->cmd_len = _osd_req_cdb_len(or);
+ scsi_req(or->request)->cmd = or->cdb.buff;
+ scsi_req(or->request)->cmd_len = _osd_req_cdb_len(or);
return 0;
}
diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c
index e8196c5..451de6c 100644
--- a/drivers/scsi/osst.c
+++ b/drivers/scsi/osst.c
@@ -322,6 +322,7 @@ static int osst_chk_result(struct osst_tape * STp, struct osst_request * SRpnt)
/* Wakeup from interrupt */
static void osst_end_async(struct request *req, int update)
{
+ struct scsi_request *rq = scsi_req(req);
struct osst_request *SRpnt = req->end_io_data;
struct osst_tape *STp = SRpnt->stp;
struct rq_map_data *mdata = &SRpnt->stp->buffer->map_data;
@@ -330,6 +331,8 @@ static void osst_end_async(struct request *req, int update)
#if DEBUG
STp->write_pending = 0;
#endif
+ if (rq->sense_len)
+ memcpy(SRpnt->sense, rq->sense, SCSI_SENSE_BUFFERSIZE);
if (SRpnt->waiting)
complete(SRpnt->waiting);
@@ -357,17 +360,20 @@ static int osst_execute(struct osst_request *SRpnt, const unsigned char *cmd,
int use_sg, int timeout, int retries)
{
struct request *req;
+ struct scsi_request *rq;
struct page **pages = NULL;
struct rq_map_data *mdata = &SRpnt->stp->buffer->map_data;
int err = 0;
int write = (data_direction == DMA_TO_DEVICE);
- req = blk_get_request(SRpnt->stp->device->request_queue, write, GFP_KERNEL);
+ req = blk_get_request(SRpnt->stp->device->request_queue,
+ write ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(req))
return DRIVER_ERROR << 24;
- blk_rq_set_block_pc(req);
+ rq = scsi_req(req);
+ scsi_req_init(req);
req->rq_flags |= RQF_QUIET;
SRpnt->bio = NULL;
@@ -404,11 +410,9 @@ static int osst_execute(struct osst_request *SRpnt, const unsigned char *cmd,
goto free_req;
}
- req->cmd_len = cmd_len;
- memset(req->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */
- memcpy(req->cmd, cmd, req->cmd_len);
- req->sense = SRpnt->sense;
- req->sense_len = 0;
+ rq->cmd_len = cmd_len;
+ memset(rq->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */
+ memcpy(rq->cmd, cmd, rq->cmd_len);
req->timeout = timeout;
req->retries = retries;
req->end_io_data = SRpnt;
diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c
index 1bf8061..40ca75b 100644
--- a/drivers/scsi/qla2xxx/qla_bsg.c
+++ b/drivers/scsi/qla2xxx/qla_bsg.c
@@ -921,7 +921,7 @@ qla2x00_process_loopback(struct bsg_job *bsg_job)
bsg_job->reply_len = sizeof(struct fc_bsg_reply) +
sizeof(response) + sizeof(uint8_t);
- fw_sts_ptr = ((uint8_t *)bsg_job->req->sense) +
+ fw_sts_ptr = ((uint8_t *)scsi_req(bsg_job->req)->sense) +
sizeof(struct fc_bsg_reply);
memcpy(fw_sts_ptr, response, sizeof(response));
fw_sts_ptr += sizeof(response);
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index a94b0b6..9281bf4 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1468,7 +1468,8 @@ qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
type, sp->handle, comp_status, fw_status[1], fw_status[2],
le16_to_cpu(((struct els_sts_entry_24xx *)
pkt)->total_byte_count));
- fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
+ fw_sts_ptr = ((uint8_t*)scsi_req(bsg_job->req)->sense) +
+ sizeof(struct fc_bsg_reply);
memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
}
else {
@@ -1482,7 +1483,8 @@ qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
pkt)->error_subcode_2));
res = DID_ERROR << 16;
bsg_reply->reply_payload_rcv_len = 0;
- fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
+ fw_sts_ptr = ((uint8_t*)scsi_req(bsg_job->req)->sense) +
+ sizeof(struct fc_bsg_reply);
memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
}
ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c
index 02f1de1..96c33e29 100644
--- a/drivers/scsi/qla2xxx/qla_mr.c
+++ b/drivers/scsi/qla2xxx/qla_mr.c
@@ -2244,7 +2244,7 @@ qlafx00_ioctl_iosb_entry(scsi_qla_host_t *vha, struct req_que *req,
memcpy(fstatus.reserved_3,
pkt->reserved_2, 20 * sizeof(uint8_t));
- fw_sts_ptr = ((uint8_t *)bsg_job->req->sense) +
+ fw_sts_ptr = ((uint8_t *)scsi_req(bsg_job->req)->sense) +
sizeof(struct fc_bsg_reply);
memcpy(fw_sts_ptr, (uint8_t *)&fstatus,
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 75455d4..7bfbcfa 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -98,176 +98,6 @@ EXPORT_SYMBOL(scsi_sd_probe_domain);
ASYNC_DOMAIN_EXCLUSIVE(scsi_sd_pm_domain);
EXPORT_SYMBOL(scsi_sd_pm_domain);
-struct scsi_host_cmd_pool {
- struct kmem_cache *cmd_slab;
- struct kmem_cache *sense_slab;
- unsigned int users;
- char *cmd_name;
- char *sense_name;
- unsigned int slab_flags;
- gfp_t gfp_mask;
-};
-
-static struct scsi_host_cmd_pool scsi_cmd_pool = {
- .cmd_name = "scsi_cmd_cache",
- .sense_name = "scsi_sense_cache",
- .slab_flags = SLAB_HWCACHE_ALIGN,
-};
-
-static struct scsi_host_cmd_pool scsi_cmd_dma_pool = {
- .cmd_name = "scsi_cmd_cache(DMA)",
- .sense_name = "scsi_sense_cache(DMA)",
- .slab_flags = SLAB_HWCACHE_ALIGN|SLAB_CACHE_DMA,
- .gfp_mask = __GFP_DMA,
-};
-
-static DEFINE_MUTEX(host_cmd_pool_mutex);
-
-/**
- * scsi_host_free_command - internal function to release a command
- * @shost: host to free the command for
- * @cmd: command to release
- *
- * the command must previously have been allocated by
- * scsi_host_alloc_command.
- */
-static void
-scsi_host_free_command(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
-{
- struct scsi_host_cmd_pool *pool = shost->cmd_pool;
-
- if (cmd->prot_sdb)
- kmem_cache_free(scsi_sdb_cache, cmd->prot_sdb);
- kmem_cache_free(pool->sense_slab, cmd->sense_buffer);
- kmem_cache_free(pool->cmd_slab, cmd);
-}
-
-/**
- * scsi_host_alloc_command - internal function to allocate command
- * @shost: SCSI host whose pool to allocate from
- * @gfp_mask: mask for the allocation
- *
- * Returns a fully allocated command with sense buffer and protection
- * data buffer (where applicable) or NULL on failure
- */
-static struct scsi_cmnd *
-scsi_host_alloc_command(struct Scsi_Host *shost, gfp_t gfp_mask)
-{
- struct scsi_host_cmd_pool *pool = shost->cmd_pool;
- struct scsi_cmnd *cmd;
-
- cmd = kmem_cache_zalloc(pool->cmd_slab, gfp_mask | pool->gfp_mask);
- if (!cmd)
- goto fail;
-
- cmd->sense_buffer = kmem_cache_alloc(pool->sense_slab,
- gfp_mask | pool->gfp_mask);
- if (!cmd->sense_buffer)
- goto fail_free_cmd;
-
- if (scsi_host_get_prot(shost) >= SHOST_DIX_TYPE0_PROTECTION) {
- cmd->prot_sdb = kmem_cache_zalloc(scsi_sdb_cache, gfp_mask);
- if (!cmd->prot_sdb)
- goto fail_free_sense;
- }
-
- return cmd;
-
-fail_free_sense:
- kmem_cache_free(pool->sense_slab, cmd->sense_buffer);
-fail_free_cmd:
- kmem_cache_free(pool->cmd_slab, cmd);
-fail:
- return NULL;
-}
-
-/**
- * __scsi_get_command - Allocate a struct scsi_cmnd
- * @shost: host to transmit command
- * @gfp_mask: allocation mask
- *
- * Description: allocate a struct scsi_cmd from host's slab, recycling from the
- * host's free_list if necessary.
- */
-static struct scsi_cmnd *
-__scsi_get_command(struct Scsi_Host *shost, gfp_t gfp_mask)
-{
- struct scsi_cmnd *cmd = scsi_host_alloc_command(shost, gfp_mask);
-
- if (unlikely(!cmd)) {
- unsigned long flags;
-
- spin_lock_irqsave(&shost->free_list_lock, flags);
- if (likely(!list_empty(&shost->free_list))) {
- cmd = list_entry(shost->free_list.next,
- struct scsi_cmnd, list);
- list_del_init(&cmd->list);
- }
- spin_unlock_irqrestore(&shost->free_list_lock, flags);
-
- if (cmd) {
- void *buf, *prot;
-
- buf = cmd->sense_buffer;
- prot = cmd->prot_sdb;
-
- memset(cmd, 0, sizeof(*cmd));
-
- cmd->sense_buffer = buf;
- cmd->prot_sdb = prot;
- }
- }
-
- return cmd;
-}
-
-/**
- * scsi_get_command - Allocate and setup a scsi command block
- * @dev: parent scsi device
- * @gfp_mask: allocator flags
- *
- * Returns: The allocated scsi command structure.
- */
-struct scsi_cmnd *scsi_get_command(struct scsi_device *dev, gfp_t gfp_mask)
-{
- struct scsi_cmnd *cmd = __scsi_get_command(dev->host, gfp_mask);
- unsigned long flags;
-
- if (unlikely(cmd == NULL))
- return NULL;
-
- cmd->device = dev;
- INIT_LIST_HEAD(&cmd->list);
- INIT_DELAYED_WORK(&cmd->abort_work, scmd_eh_abort_handler);
- spin_lock_irqsave(&dev->list_lock, flags);
- list_add_tail(&cmd->list, &dev->cmd_list);
- spin_unlock_irqrestore(&dev->list_lock, flags);
- cmd->jiffies_at_alloc = jiffies;
- return cmd;
-}
-
-/**
- * __scsi_put_command - Free a struct scsi_cmnd
- * @shost: dev->host
- * @cmd: Command to free
- */
-static void __scsi_put_command(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
-{
- unsigned long flags;
-
- if (unlikely(list_empty(&shost->free_list))) {
- spin_lock_irqsave(&shost->free_list_lock, flags);
- if (list_empty(&shost->free_list)) {
- list_add(&cmd->list, &shost->free_list);
- cmd = NULL;
- }
- spin_unlock_irqrestore(&shost->free_list_lock, flags);
- }
-
- if (likely(cmd != NULL))
- scsi_host_free_command(shost, cmd);
-}
-
/**
* scsi_put_command - Free a scsi command block
* @cmd: command block to free
@@ -287,188 +117,6 @@ void scsi_put_command(struct scsi_cmnd *cmd)
spin_unlock_irqrestore(&cmd->device->list_lock, flags);
BUG_ON(delayed_work_pending(&cmd->abort_work));
-
- __scsi_put_command(cmd->device->host, cmd);
-}
-
-static struct scsi_host_cmd_pool *
-scsi_find_host_cmd_pool(struct Scsi_Host *shost)
-{
- if (shost->hostt->cmd_size)
- return shost->hostt->cmd_pool;
- if (shost->unchecked_isa_dma)
- return &scsi_cmd_dma_pool;
- return &scsi_cmd_pool;
-}
-
-static void
-scsi_free_host_cmd_pool(struct scsi_host_cmd_pool *pool)
-{
- kfree(pool->sense_name);
- kfree(pool->cmd_name);
- kfree(pool);
-}
-
-static struct scsi_host_cmd_pool *
-scsi_alloc_host_cmd_pool(struct Scsi_Host *shost)
-{
- struct scsi_host_template *hostt = shost->hostt;
- struct scsi_host_cmd_pool *pool;
-
- pool = kzalloc(sizeof(*pool), GFP_KERNEL);
- if (!pool)
- return NULL;
-
- pool->cmd_name = kasprintf(GFP_KERNEL, "%s_cmd", hostt->proc_name);
- pool->sense_name = kasprintf(GFP_KERNEL, "%s_sense", hostt->proc_name);
- if (!pool->cmd_name || !pool->sense_name) {
- scsi_free_host_cmd_pool(pool);
- return NULL;
- }
-
- pool->slab_flags = SLAB_HWCACHE_ALIGN;
- if (shost->unchecked_isa_dma) {
- pool->slab_flags |= SLAB_CACHE_DMA;
- pool->gfp_mask = __GFP_DMA;
- }
-
- if (hostt->cmd_size)
- hostt->cmd_pool = pool;
-
- return pool;
-}
-
-static struct scsi_host_cmd_pool *
-scsi_get_host_cmd_pool(struct Scsi_Host *shost)
-{
- struct scsi_host_template *hostt = shost->hostt;
- struct scsi_host_cmd_pool *retval = NULL, *pool;
- size_t cmd_size = sizeof(struct scsi_cmnd) + hostt->cmd_size;
-
- /*
- * Select a command slab for this host and create it if not
- * yet existent.
- */
- mutex_lock(&host_cmd_pool_mutex);
- pool = scsi_find_host_cmd_pool(shost);
- if (!pool) {
- pool = scsi_alloc_host_cmd_pool(shost);
- if (!pool)
- goto out;
- }
-
- if (!pool->users) {
- pool->cmd_slab = kmem_cache_create(pool->cmd_name, cmd_size, 0,
- pool->slab_flags, NULL);
- if (!pool->cmd_slab)
- goto out_free_pool;
-
- pool->sense_slab = kmem_cache_create(pool->sense_name,
- SCSI_SENSE_BUFFERSIZE, 0,
- pool->slab_flags, NULL);
- if (!pool->sense_slab)
- goto out_free_slab;
- }
-
- pool->users++;
- retval = pool;
-out:
- mutex_unlock(&host_cmd_pool_mutex);
- return retval;
-
-out_free_slab:
- kmem_cache_destroy(pool->cmd_slab);
-out_free_pool:
- if (hostt->cmd_size) {
- scsi_free_host_cmd_pool(pool);
- hostt->cmd_pool = NULL;
- }
- goto out;
-}
-
-static void scsi_put_host_cmd_pool(struct Scsi_Host *shost)
-{
- struct scsi_host_template *hostt = shost->hostt;
- struct scsi_host_cmd_pool *pool;
-
- mutex_lock(&host_cmd_pool_mutex);
- pool = scsi_find_host_cmd_pool(shost);
-
- /*
- * This may happen if a driver has a mismatched get and put
- * of the command pool; the driver should be implicated in
- * the stack trace
- */
- BUG_ON(pool->users == 0);
-
- if (!--pool->users) {
- kmem_cache_destroy(pool->cmd_slab);
- kmem_cache_destroy(pool->sense_slab);
- if (hostt->cmd_size) {
- scsi_free_host_cmd_pool(pool);
- hostt->cmd_pool = NULL;
- }
- }
- mutex_unlock(&host_cmd_pool_mutex);
-}
-
-/**
- * scsi_setup_command_freelist - Setup the command freelist for a scsi host.
- * @shost: host to allocate the freelist for.
- *
- * Description: The command freelist protects against system-wide out of memory
- * deadlock by preallocating one SCSI command structure for each host, so the
- * system can always write to a swap file on a device associated with that host.
- *
- * Returns: Nothing.
- */
-int scsi_setup_command_freelist(struct Scsi_Host *shost)
-{
- const gfp_t gfp_mask = shost->unchecked_isa_dma ? GFP_DMA : GFP_KERNEL;
- struct scsi_cmnd *cmd;
-
- spin_lock_init(&shost->free_list_lock);
- INIT_LIST_HEAD(&shost->free_list);
-
- shost->cmd_pool = scsi_get_host_cmd_pool(shost);
- if (!shost->cmd_pool)
- return -ENOMEM;
-
- /*
- * Get one backup command for this host.
- */
- cmd = scsi_host_alloc_command(shost, gfp_mask);
- if (!cmd) {
- scsi_put_host_cmd_pool(shost);
- shost->cmd_pool = NULL;
- return -ENOMEM;
- }
- list_add(&cmd->list, &shost->free_list);
- return 0;
-}
-
-/**
- * scsi_destroy_command_freelist - Release the command freelist for a scsi host.
- * @shost: host whose freelist is going to be destroyed
- */
-void scsi_destroy_command_freelist(struct Scsi_Host *shost)
-{
- /*
- * If cmd_pool is NULL the free list was not initialized, so
- * do not attempt to release resources.
- */
- if (!shost->cmd_pool)
- return;
-
- while (!list_empty(&shost->free_list)) {
- struct scsi_cmnd *cmd;
-
- cmd = list_entry(shost->free_list.next, struct scsi_cmnd, list);
- list_del_init(&cmd->list);
- scsi_host_free_command(shost, cmd);
- }
- shost->cmd_pool = NULL;
- scsi_put_host_cmd_pool(shost);
}
#ifdef CONFIG_SCSI_LOGGING
@@ -590,7 +238,7 @@ void scsi_finish_command(struct scsi_cmnd *cmd)
"(result %x)\n", cmd->result));
good_bytes = scsi_bufflen(cmd);
- if (cmd->request->cmd_type != REQ_TYPE_BLOCK_PC) {
+ if (!blk_rq_is_passthrough(cmd->request)) {
int old_good_bytes = good_bytes;
drv = scsi_cmd_to_driver(cmd);
if (drv->done)
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 996e134..9e82fa5 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1106,7 +1106,7 @@ static int scsi_request_sense(struct scsi_cmnd *scmd)
static int scsi_eh_action(struct scsi_cmnd *scmd, int rtn)
{
- if (scmd->request->cmd_type != REQ_TYPE_BLOCK_PC) {
+ if (!blk_rq_is_passthrough(scmd->request)) {
struct scsi_driver *sdrv = scsi_cmd_to_driver(scmd);
if (sdrv->eh_action)
rtn = sdrv->eh_action(scmd, rtn);
@@ -1746,7 +1746,7 @@ check_type:
* the check condition was retryable.
*/
if (scmd->request->cmd_flags & REQ_FAILFAST_DEV ||
- scmd->request->cmd_type == REQ_TYPE_BLOCK_PC)
+ blk_rq_is_passthrough(scmd->request))
return 1;
else
return 0;
@@ -1968,25 +1968,25 @@ static void eh_lock_door_done(struct request *req, int uptodate)
static void scsi_eh_lock_door(struct scsi_device *sdev)
{
struct request *req;
+ struct scsi_request *rq;
/*
* blk_get_request with GFP_KERNEL (__GFP_RECLAIM) sleeps until a
* request becomes available
*/
- req = blk_get_request(sdev->request_queue, READ, GFP_KERNEL);
+ req = blk_get_request(sdev->request_queue, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(req))
return;
+ rq = scsi_req(req);
+ scsi_req_init(req);
- blk_rq_set_block_pc(req);
-
- req->cmd[0] = ALLOW_MEDIUM_REMOVAL;
- req->cmd[1] = 0;
- req->cmd[2] = 0;
- req->cmd[3] = 0;
- req->cmd[4] = SCSI_REMOVAL_PREVENT;
- req->cmd[5] = 0;
-
- req->cmd_len = COMMAND_SIZE(req->cmd[0]);
+ rq->cmd[0] = ALLOW_MEDIUM_REMOVAL;
+ rq->cmd[1] = 0;
+ rq->cmd[2] = 0;
+ rq->cmd[3] = 0;
+ rq->cmd[4] = SCSI_REMOVAL_PREVENT;
+ rq->cmd[5] = 0;
+ rq->cmd_len = COMMAND_SIZE(rq->cmd[0]);
req->rq_flags |= RQF_QUIET;
req->timeout = 10 * HZ;
@@ -2331,7 +2331,7 @@ scsi_ioctl_reset(struct scsi_device *dev, int __user *arg)
{
struct scsi_cmnd *scmd;
struct Scsi_Host *shost = dev->host;
- struct request req;
+ struct request *rq;
unsigned long flags;
int error = 0, rtn, val;
@@ -2346,14 +2346,16 @@ scsi_ioctl_reset(struct scsi_device *dev, int __user *arg)
return -EIO;
error = -EIO;
- scmd = scsi_get_command(dev, GFP_KERNEL);
- if (!scmd)
+ rq = kzalloc(sizeof(struct request) + sizeof(struct scsi_cmnd) +
+ shost->hostt->cmd_size, GFP_KERNEL);
+ if (!rq)
goto out_put_autopm_host;
+ blk_rq_init(NULL, rq);
- blk_rq_init(NULL, &req);
- scmd->request = &req;
-
- scmd->cmnd = req.cmd;
+ scmd = (struct scsi_cmnd *)(rq + 1);
+ scsi_init_command(dev, scmd);
+ scmd->request = rq;
+ scmd->cmnd = scsi_req(rq)->cmd;
scmd->scsi_done = scsi_reset_provider_done_command;
memset(&scmd->sdb, 0, sizeof(scmd->sdb));
@@ -2413,6 +2415,7 @@ scsi_ioctl_reset(struct scsi_device *dev, int __user *arg)
scsi_run_host_queues(shost);
scsi_put_command(scmd);
+ kfree(rq);
out_put_autopm_host:
scsi_autopm_put_host(shost);
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 78db07f..912fbc3 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -37,8 +37,59 @@
#include "scsi_priv.h"
#include "scsi_logging.h"
+static struct kmem_cache *scsi_sdb_cache;
+static struct kmem_cache *scsi_sense_cache;
+static struct kmem_cache *scsi_sense_isadma_cache;
+static DEFINE_MUTEX(scsi_sense_cache_mutex);
-struct kmem_cache *scsi_sdb_cache;
+static inline struct kmem_cache *
+scsi_select_sense_cache(struct Scsi_Host *shost)
+{
+ return shost->unchecked_isa_dma ?
+ scsi_sense_isadma_cache : scsi_sense_cache;
+}
+
+static void scsi_free_sense_buffer(struct Scsi_Host *shost,
+ unsigned char *sense_buffer)
+{
+ kmem_cache_free(scsi_select_sense_cache(shost), sense_buffer);
+}
+
+static unsigned char *scsi_alloc_sense_buffer(struct Scsi_Host *shost,
+ gfp_t gfp_mask, int numa_node)
+{
+ return kmem_cache_alloc_node(scsi_select_sense_cache(shost), gfp_mask,
+ numa_node);
+}
+
+int scsi_init_sense_cache(struct Scsi_Host *shost)
+{
+ struct kmem_cache *cache;
+ int ret = 0;
+
+ cache = scsi_select_sense_cache(shost);
+ if (cache)
+ return 0;
+
+ mutex_lock(&scsi_sense_cache_mutex);
+ if (shost->unchecked_isa_dma) {
+ scsi_sense_isadma_cache =
+ kmem_cache_create("scsi_sense_cache(DMA)",
+ SCSI_SENSE_BUFFERSIZE, 0,
+ SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, NULL);
+ if (!scsi_sense_isadma_cache)
+ ret = -ENOMEM;
+ } else {
+ scsi_sense_cache =
+ kmem_cache_create("scsi_sense_cache",
+ SCSI_SENSE_BUFFERSIZE, 0, SLAB_HWCACHE_ALIGN, NULL);
+ if (!scsi_sense_cache)
+ ret = -ENOMEM;
+ }
+
+ mutex_unlock(&scsi_sense_cache_mutex);
+ return ret;
+}
/*
* When to reinvoke queueing after a resource shortage. It's 3 msecs to
@@ -168,22 +219,23 @@ static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
req_flags_t rq_flags, int *resid)
{
struct request *req;
- int write = (data_direction == DMA_TO_DEVICE);
+ struct scsi_request *rq;
int ret = DRIVER_ERROR << 24;
- req = blk_get_request(sdev->request_queue, write, __GFP_RECLAIM);
+ req = blk_get_request(sdev->request_queue,
+ data_direction == DMA_TO_DEVICE ?
+ REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, __GFP_RECLAIM);
if (IS_ERR(req))
return ret;
- blk_rq_set_block_pc(req);
+ rq = scsi_req(req);
+ scsi_req_init(req);
if (bufflen && blk_rq_map_kern(sdev->request_queue, req,
buffer, bufflen, __GFP_RECLAIM))
goto out;
- req->cmd_len = COMMAND_SIZE(cmd[0]);
- memcpy(req->cmd, cmd, req->cmd_len);
- req->sense = sense;
- req->sense_len = 0;
+ rq->cmd_len = COMMAND_SIZE(cmd[0]);
+ memcpy(rq->cmd, cmd, rq->cmd_len);
req->retries = retries;
req->timeout = timeout;
req->cmd_flags |= flags;
@@ -200,11 +252,13 @@ static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
* is invalid. Prevent the garbage from being misinterpreted
* and prevent security leaks by zeroing out the excess data.
*/
- if (unlikely(req->resid_len > 0 && req->resid_len <= bufflen))
- memset(buffer + (bufflen - req->resid_len), 0, req->resid_len);
+ if (unlikely(rq->resid_len > 0 && rq->resid_len <= bufflen))
+ memset(buffer + (bufflen - rq->resid_len), 0, rq->resid_len);
if (resid)
- *resid = req->resid_len;
+ *resid = rq->resid_len;
+ if (sense && rq->sense_len)
+ memcpy(sense, rq->sense, SCSI_SENSE_BUFFERSIZE);
ret = req->errors;
out:
blk_put_request(req);
@@ -529,7 +583,7 @@ void scsi_run_host_queues(struct Scsi_Host *shost)
static void scsi_uninit_cmd(struct scsi_cmnd *cmd)
{
- if (cmd->request->cmd_type == REQ_TYPE_FS) {
+ if (!blk_rq_is_passthrough(cmd->request)) {
struct scsi_driver *drv = scsi_cmd_to_driver(cmd);
if (drv->uninit_command)
@@ -645,14 +699,13 @@ static bool scsi_end_request(struct request *req, int error,
if (bidi_bytes)
scsi_release_bidi_buffers(cmd);
+ scsi_release_buffers(cmd);
+ scsi_put_command(cmd);
spin_lock_irqsave(q->queue_lock, flags);
blk_finish_request(req, error);
spin_unlock_irqrestore(q->queue_lock, flags);
- scsi_release_buffers(cmd);
-
- scsi_put_command(cmd);
scsi_run_queue(q);
}
@@ -754,18 +807,15 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
sense_deferred = scsi_sense_is_deferred(&sshdr);
}
- if (req->cmd_type == REQ_TYPE_BLOCK_PC) { /* SG_IO ioctl from block level */
+ if (blk_rq_is_passthrough(req)) {
if (result) {
- if (sense_valid && req->sense) {
+ if (sense_valid) {
/*
* SG_IO wants current and deferred errors
*/
- int len = 8 + cmd->sense_buffer[7];
-
- if (len > SCSI_SENSE_BUFFERSIZE)
- len = SCSI_SENSE_BUFFERSIZE;
- memcpy(req->sense, cmd->sense_buffer, len);
- req->sense_len = len;
+ scsi_req(req)->sense_len =
+ min(8 + cmd->sense_buffer[7],
+ SCSI_SENSE_BUFFERSIZE);
}
if (!sense_deferred)
error = __scsi_error_from_host_byte(cmd, result);
@@ -775,14 +825,14 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
*/
req->errors = cmd->result;
- req->resid_len = scsi_get_resid(cmd);
+ scsi_req(req)->resid_len = scsi_get_resid(cmd);
if (scsi_bidi_cmnd(cmd)) {
/*
* Bidi commands Must be complete as a whole,
* both sides at once.
*/
- req->next_rq->resid_len = scsi_in(cmd)->resid;
+ scsi_req(req->next_rq)->resid_len = scsi_in(cmd)->resid;
if (scsi_end_request(req, 0, blk_rq_bytes(req),
blk_rq_bytes(req->next_rq)))
BUG();
@@ -790,15 +840,14 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
}
} else if (blk_rq_bytes(req) == 0 && result && !sense_deferred) {
/*
- * Certain non BLOCK_PC requests are commands that don't
- * actually transfer anything (FLUSH), so cannot use
+ * Flush commands do not transfers any data, and thus cannot use
* good_bytes != blk_rq_bytes(req) as the signal for an error.
* This sets the error explicitly for the problem case.
*/
error = __scsi_error_from_host_byte(cmd, result);
}
- /* no bidi support for !REQ_TYPE_BLOCK_PC yet */
+ /* no bidi support for !blk_rq_is_passthrough yet */
BUG_ON(blk_bidi_rq(req));
/*
@@ -810,8 +859,8 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
blk_rq_sectors(req), good_bytes));
/*
- * Recovered errors need reporting, but they're always treated
- * as success, so fiddle the result code here. For BLOCK_PC
+ * Recovered errors need reporting, but they're always treated as
+ * success, so fiddle the result code here. For passthrough requests
* we already took a copy of the original into rq->errors which
* is what gets returned to the user
*/
@@ -825,7 +874,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
else if (!(req->rq_flags & RQF_QUIET))
scsi_print_sense(cmd);
result = 0;
- /* BLOCK_PC may have set error */
+ /* for passthrough error may be set */
error = 0;
}
@@ -1110,42 +1159,33 @@ err_exit:
}
EXPORT_SYMBOL(scsi_init_io);
-static struct scsi_cmnd *scsi_get_cmd_from_req(struct scsi_device *sdev,
- struct request *req)
+void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd)
{
- struct scsi_cmnd *cmd;
-
- if (!req->special) {
- /* Bail if we can't get a reference to the device */
- if (!get_device(&sdev->sdev_gendev))
- return NULL;
-
- cmd = scsi_get_command(sdev, GFP_ATOMIC);
- if (unlikely(!cmd)) {
- put_device(&sdev->sdev_gendev);
- return NULL;
- }
- req->special = cmd;
- } else {
- cmd = req->special;
- }
+ void *buf = cmd->sense_buffer;
+ void *prot = cmd->prot_sdb;
+ unsigned long flags;
- /* pull a tag out of the request if we have one */
- cmd->tag = req->tag;
- cmd->request = req;
+ /* zero out the cmd, except for the embedded scsi_request */
+ memset((char *)cmd + sizeof(cmd->req), 0,
+ sizeof(*cmd) - sizeof(cmd->req));
- cmd->cmnd = req->cmd;
- cmd->prot_op = SCSI_PROT_NORMAL;
+ cmd->device = dev;
+ cmd->sense_buffer = buf;
+ cmd->prot_sdb = prot;
+ INIT_DELAYED_WORK(&cmd->abort_work, scmd_eh_abort_handler);
+ cmd->jiffies_at_alloc = jiffies;
- return cmd;
+ spin_lock_irqsave(&dev->list_lock, flags);
+ list_add_tail(&cmd->list, &dev->cmd_list);
+ spin_unlock_irqrestore(&dev->list_lock, flags);
}
-static int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
+static int scsi_setup_scsi_cmnd(struct scsi_device *sdev, struct request *req)
{
struct scsi_cmnd *cmd = req->special;
/*
- * BLOCK_PC requests may transfer data, in which case they must
+ * Passthrough requests may transfer data, in which case they must
* a bio attached to them. Or they might contain a SCSI command
* that does not transfer data, in which case they may optionally
* submit a request without an attached bio.
@@ -1160,14 +1200,15 @@ static int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
memset(&cmd->sdb, 0, sizeof(cmd->sdb));
}
- cmd->cmd_len = req->cmd_len;
+ cmd->cmd_len = scsi_req(req)->cmd_len;
+ cmd->cmnd = scsi_req(req)->cmd;
cmd->transfersize = blk_rq_bytes(req);
cmd->allowed = req->retries;
return BLKPREP_OK;
}
/*
- * Setup a REQ_TYPE_FS command. These are simple request from filesystems
+ * Setup a normal block command. These are simple request from filesystems
* that still need to be translated to SCSI CDBs from the ULD.
*/
static int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req)
@@ -1180,6 +1221,7 @@ static int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req)
return ret;
}
+ cmd->cmnd = scsi_req(req)->cmd = scsi_req(req)->__cmd;
memset(cmd->cmnd, 0, BLK_MAX_CDB);
return scsi_cmd_to_driver(cmd)->init_command(cmd);
}
@@ -1195,14 +1237,10 @@ static int scsi_setup_cmnd(struct scsi_device *sdev, struct request *req)
else
cmd->sc_data_direction = DMA_FROM_DEVICE;
- switch (req->cmd_type) {
- case REQ_TYPE_FS:
+ if (blk_rq_is_scsi(req))
+ return scsi_setup_scsi_cmnd(sdev, req);
+ else
return scsi_setup_fs_cmnd(sdev, req);
- case REQ_TYPE_BLOCK_PC:
- return scsi_setup_blk_pc_cmnd(sdev, req);
- default:
- return BLKPREP_KILL;
- }
}
static int
@@ -1298,19 +1336,28 @@ scsi_prep_return(struct request_queue *q, struct request *req, int ret)
static int scsi_prep_fn(struct request_queue *q, struct request *req)
{
struct scsi_device *sdev = q->queuedata;
- struct scsi_cmnd *cmd;
+ struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(req);
int ret;
ret = scsi_prep_state_check(sdev, req);
if (ret != BLKPREP_OK)
goto out;
- cmd = scsi_get_cmd_from_req(sdev, req);
- if (unlikely(!cmd)) {
- ret = BLKPREP_DEFER;
- goto out;
+ if (!req->special) {
+ /* Bail if we can't get a reference to the device */
+ if (unlikely(!get_device(&sdev->sdev_gendev))) {
+ ret = BLKPREP_DEFER;
+ goto out;
+ }
+
+ scsi_init_command(sdev, cmd);
+ req->special = cmd;
}
+ cmd->tag = req->tag;
+ cmd->request = req;
+ cmd->prot_op = SCSI_PROT_NORMAL;
+
ret = scsi_setup_cmnd(sdev, req);
out:
return scsi_prep_return(q, req, ret);
@@ -1827,7 +1874,9 @@ static int scsi_mq_prep_fn(struct request *req)
unsigned char *sense_buf = cmd->sense_buffer;
struct scatterlist *sg;
- memset(cmd, 0, sizeof(struct scsi_cmnd));
+ /* zero out the cmd, except for the embedded scsi_request */
+ memset((char *)cmd + sizeof(cmd->req), 0,
+ sizeof(*cmd) - sizeof(cmd->req));
req->special = cmd;
@@ -1837,7 +1886,6 @@ static int scsi_mq_prep_fn(struct request *req)
cmd->tag = req->tag;
- cmd->cmnd = req->cmd;
cmd->prot_op = SCSI_PROT_NORMAL;
INIT_LIST_HEAD(&cmd->list);
@@ -1912,7 +1960,6 @@ static int scsi_queue_rq(struct blk_mq_hw_ctx *hctx,
if (!scsi_host_queue_ready(q, shost, sdev))
goto out_dec_target_busy;
-
if (!(req->rq_flags & RQF_DONTPREP)) {
ret = prep_to_mq(scsi_mq_prep_fn(req));
if (ret != BLK_MQ_RQ_QUEUE_OK)
@@ -1982,21 +2029,24 @@ static int scsi_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
{
+ struct Scsi_Host *shost = data;
struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
- cmd->sense_buffer = kzalloc_node(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL,
- numa_node);
+ cmd->sense_buffer =
+ scsi_alloc_sense_buffer(shost, GFP_KERNEL, numa_node);
if (!cmd->sense_buffer)
return -ENOMEM;
+ cmd->req.sense = cmd->sense_buffer;
return 0;
}
static void scsi_exit_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx)
{
+ struct Scsi_Host *shost = data;
struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
- kfree(cmd->sense_buffer);
+ scsi_free_sense_buffer(shost, cmd->sense_buffer);
}
static int scsi_map_queues(struct blk_mq_tag_set *set)
@@ -2029,7 +2079,7 @@ static u64 scsi_calculate_bounce_limit(struct Scsi_Host *shost)
return bounce_limit;
}
-static void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q)
+void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q)
{
struct device *dev = shost->dma_dev;
@@ -2064,28 +2114,64 @@ static void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q)
*/
blk_queue_dma_alignment(q, 0x03);
}
+EXPORT_SYMBOL_GPL(__scsi_init_queue);
-struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost,
- request_fn_proc *request_fn)
+static int scsi_init_rq(struct request_queue *q, struct request *rq, gfp_t gfp)
{
- struct request_queue *q;
+ struct Scsi_Host *shost = q->rq_alloc_data;
+ struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
- q = blk_init_queue(request_fn, NULL);
- if (!q)
- return NULL;
- __scsi_init_queue(shost, q);
- return q;
+ memset(cmd, 0, sizeof(*cmd));
+
+ cmd->sense_buffer = scsi_alloc_sense_buffer(shost, gfp, NUMA_NO_NODE);
+ if (!cmd->sense_buffer)
+ goto fail;
+ cmd->req.sense = cmd->sense_buffer;
+
+ if (scsi_host_get_prot(shost) >= SHOST_DIX_TYPE0_PROTECTION) {
+ cmd->prot_sdb = kmem_cache_zalloc(scsi_sdb_cache, gfp);
+ if (!cmd->prot_sdb)
+ goto fail_free_sense;
+ }
+
+ return 0;
+
+fail_free_sense:
+ scsi_free_sense_buffer(shost, cmd->sense_buffer);
+fail:
+ return -ENOMEM;
+}
+
+static void scsi_exit_rq(struct request_queue *q, struct request *rq)
+{
+ struct Scsi_Host *shost = q->rq_alloc_data;
+ struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
+
+ if (cmd->prot_sdb)
+ kmem_cache_free(scsi_sdb_cache, cmd->prot_sdb);
+ scsi_free_sense_buffer(shost, cmd->sense_buffer);
}
-EXPORT_SYMBOL(__scsi_alloc_queue);
struct request_queue *scsi_alloc_queue(struct scsi_device *sdev)
{
+ struct Scsi_Host *shost = sdev->host;
struct request_queue *q;
- q = __scsi_alloc_queue(sdev->host, scsi_request_fn);
+ q = blk_alloc_queue_node(GFP_KERNEL, NUMA_NO_NODE);
if (!q)
return NULL;
+ q->cmd_size = sizeof(struct scsi_cmnd) + shost->hostt->cmd_size;
+ q->rq_alloc_data = shost;
+ q->request_fn = scsi_request_fn;
+ q->init_rq_fn = scsi_init_rq;
+ q->exit_rq_fn = scsi_exit_rq;
+
+ if (blk_init_allocated_queue(q) < 0) {
+ blk_cleanup_queue(q);
+ return NULL;
+ }
+ __scsi_init_queue(shost, q);
blk_queue_prep_rq(q, scsi_prep_fn);
blk_queue_unprep_rq(q, scsi_unprep_fn);
blk_queue_softirq_done(q, scsi_softirq_done);
@@ -2209,6 +2295,8 @@ int __init scsi_init_queue(void)
void scsi_exit_queue(void)
{
+ kmem_cache_destroy(scsi_sense_cache);
+ kmem_cache_destroy(scsi_sense_isadma_cache);
kmem_cache_destroy(scsi_sdb_cache);
}
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index 193636a..99bfc98 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -30,8 +30,8 @@ extern void scsi_exit_hosts(void);
/* scsi.c */
extern bool scsi_use_blk_mq;
-extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
-extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
+int scsi_init_sense_cache(struct Scsi_Host *shost);
+void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
#ifdef CONFIG_SCSI_LOGGING
void scsi_log_send(struct scsi_cmnd *cmd);
void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
@@ -96,7 +96,6 @@ extern void scsi_exit_queue(void);
extern void scsi_evt_thread(struct work_struct *work);
struct request_queue;
struct request;
-extern struct kmem_cache *scsi_sdb_cache;
/* scsi_proc.c */
#ifdef CONFIG_SCSI_PROC_FS
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 03577bd..13dcb9b 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -3765,7 +3765,6 @@ fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
struct device *dev = &shost->shost_gendev;
struct fc_internal *i = to_fc_internal(shost->transportt);
struct request_queue *q;
- int err;
char bsg_name[20];
fc_host->rqst_q = NULL;
@@ -3776,23 +3775,14 @@ fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
snprintf(bsg_name, sizeof(bsg_name),
"fc_host%d", shost->host_no);
- q = __scsi_alloc_queue(shost, bsg_request_fn);
- if (!q) {
- dev_err(dev,
- "fc_host%d: bsg interface failed to initialize - no request queue\n",
- shost->host_no);
- return -ENOMEM;
- }
-
- err = bsg_setup_queue(dev, q, bsg_name, fc_bsg_dispatch,
- i->f->dd_bsg_size);
- if (err) {
+ q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, i->f->dd_bsg_size);
+ if (IS_ERR(q)) {
dev_err(dev,
"fc_host%d: bsg interface failed to initialize - setup queue\n",
shost->host_no);
- blk_cleanup_queue(q);
- return err;
+ return PTR_ERR(q);
}
+ __scsi_init_queue(shost, q);
blk_queue_rq_timed_out(q, fc_bsg_job_timeout);
blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT);
fc_host->rqst_q = q;
@@ -3824,26 +3814,18 @@ fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport)
struct device *dev = &rport->dev;
struct fc_internal *i = to_fc_internal(shost->transportt);
struct request_queue *q;
- int err;
rport->rqst_q = NULL;
if (!i->f->bsg_request)
return -ENOTSUPP;
- q = __scsi_alloc_queue(shost, bsg_request_fn);
- if (!q) {
- dev_err(dev, "bsg interface failed to initialize - no request queue\n");
- return -ENOMEM;
- }
-
- err = bsg_setup_queue(dev, q, NULL, fc_bsg_dispatch, i->f->dd_bsg_size);
- if (err) {
+ q = bsg_setup_queue(dev, NULL, fc_bsg_dispatch, i->f->dd_bsg_size);
+ if (IS_ERR(q)) {
dev_err(dev, "failed to setup bsg queue\n");
- blk_cleanup_queue(q);
- return err;
+ return PTR_ERR(q);
}
-
+ __scsi_init_queue(shost, q);
blk_queue_prep_rq(q, fc_bsg_rport_prep);
blk_queue_rq_timed_out(q, fc_bsg_job_timeout);
blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT);
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 42bca61..568c9f2 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1537,24 +1537,18 @@ iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost)
struct iscsi_internal *i = to_iscsi_internal(shost->transportt);
struct request_queue *q;
char bsg_name[20];
- int ret;
if (!i->iscsi_transport->bsg_request)
return -ENOTSUPP;
snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no);
-
- q = __scsi_alloc_queue(shost, bsg_request_fn);
- if (!q)
- return -ENOMEM;
-
- ret = bsg_setup_queue(dev, q, bsg_name, iscsi_bsg_host_dispatch, 0);
- if (ret) {
+ q = bsg_setup_queue(dev, bsg_name, iscsi_bsg_host_dispatch, 0);
+ if (IS_ERR(q)) {
shost_printk(KERN_ERR, shost, "bsg interface failed to "
"initialize - no request queue\n");
- blk_cleanup_queue(q);
- return ret;
+ return PTR_ERR(q);
}
+ __scsi_init_queue(shost, q);
ihost->bsg_q = q;
return 0;
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 60b651b..126a5ee 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -33,6 +33,7 @@
#include <linux/bsg.h>
#include <scsi/scsi.h>
+#include <scsi/scsi_request.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
@@ -177,6 +178,10 @@ static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
while ((req = blk_fetch_request(q)) != NULL) {
spin_unlock_irq(q->queue_lock);
+ scsi_req(req)->resid_len = blk_rq_bytes(req);
+ if (req->next_rq)
+ scsi_req(req->next_rq)->resid_len =
+ blk_rq_bytes(req->next_rq);
handler = to_sas_internal(shost->transportt)->f->smp_handler;
ret = handler(shost, rphy, req);
req->errors = ret;
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 1f5d92a..40b4038 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -781,7 +781,7 @@ static int sd_setup_discard_cmnd(struct scsi_cmnd *cmd)
rq->special_vec.bv_len = len;
rq->rq_flags |= RQF_SPECIAL_PAYLOAD;
- rq->resid_len = len;
+ scsi_req(rq)->resid_len = len;
ret = scsi_init_io(cmd);
out:
@@ -1179,7 +1179,7 @@ static void sd_uninit_command(struct scsi_cmnd *SCpnt)
if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
__free_page(rq->special_vec.bv_page);
- if (SCpnt->cmnd != rq->cmd) {
+ if (SCpnt->cmnd != scsi_req(rq)->cmd) {
mempool_free(SCpnt->cmnd, sd_cdb_pool);
SCpnt->cmnd = NULL;
SCpnt->cmd_len = 0;
@@ -1750,9 +1750,6 @@ static unsigned int sd_completed_bytes(struct scsi_cmnd *scmd)
unsigned int transferred = scsi_bufflen(scmd) - scsi_get_resid(scmd);
unsigned int good_bytes;
- if (scmd->request->cmd_type != REQ_TYPE_FS)
- return 0;
-
info_valid = scsi_get_sense_info_fld(scmd->sense_buffer,
SCSI_SENSE_BUFFERSIZE,
&bad_lba);
@@ -3082,6 +3079,23 @@ static void sd_probe_async(void *data, async_cookie_t cookie)
put_device(&sdkp->dev);
}
+struct sd_devt {
+ int idx;
+ struct disk_devt disk_devt;
+};
+
+void sd_devt_release(struct disk_devt *disk_devt)
+{
+ struct sd_devt *sd_devt = container_of(disk_devt, struct sd_devt,
+ disk_devt);
+
+ spin_lock(&sd_index_lock);
+ ida_remove(&sd_index_ida, sd_devt->idx);
+ spin_unlock(&sd_index_lock);
+
+ kfree(sd_devt);
+}
+
/**
* sd_probe - called during driver initialization and whenever a
* new scsi device is attached to the system. It is called once
@@ -3103,6 +3117,7 @@ static void sd_probe_async(void *data, async_cookie_t cookie)
static int sd_probe(struct device *dev)
{
struct scsi_device *sdp = to_scsi_device(dev);
+ struct sd_devt *sd_devt;
struct scsi_disk *sdkp;
struct gendisk *gd;
int index;
@@ -3128,9 +3143,13 @@ static int sd_probe(struct device *dev)
if (!sdkp)
goto out;
+ sd_devt = kzalloc(sizeof(*sd_devt), GFP_KERNEL);
+ if (!sd_devt)
+ goto out_free;
+
gd = alloc_disk(SD_MINORS);
if (!gd)
- goto out_free;
+ goto out_free_devt;
do {
if (!ida_pre_get(&sd_index_ida, GFP_KERNEL))
@@ -3146,6 +3165,11 @@ static int sd_probe(struct device *dev)
goto out_put;
}
+ atomic_set(&sd_devt->disk_devt.count, 1);
+ sd_devt->disk_devt.release = sd_devt_release;
+ sd_devt->idx = index;
+ gd->disk_devt = &sd_devt->disk_devt;
+
error = sd_format_disk_name("sd", index, gd->disk_name, DISK_NAME_LEN);
if (error) {
sdev_printk(KERN_WARNING, sdp, "SCSI disk (sd) name length exceeded.\n");
@@ -3185,13 +3209,14 @@ static int sd_probe(struct device *dev)
return 0;
out_free_index:
- spin_lock(&sd_index_lock);
- ida_remove(&sd_index_ida, index);
- spin_unlock(&sd_index_lock);
+ put_disk_devt(&sd_devt->disk_devt);
+ sd_devt = NULL;
out_put:
put_disk(gd);
out_free:
kfree(sdkp);
+ out_free_devt:
+ kfree(sd_devt);
out:
scsi_autopm_put_device(sdp);
return error;
@@ -3250,10 +3275,7 @@ static void scsi_disk_release(struct device *dev)
struct scsi_disk *sdkp = to_scsi_disk(dev);
struct gendisk *disk = sdkp->disk;
- spin_lock(&sd_index_lock);
- ida_remove(&sd_index_ida, sdkp->index);
- spin_unlock(&sd_index_lock);
-
+ put_disk_devt(disk->disk_devt);
disk->private_data = NULL;
put_disk(disk);
put_device(&sdkp->device->sdev_gendev);
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 121de0a..e831e01 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -781,9 +781,7 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
}
if (atomic_read(&sdp->detaching)) {
if (srp->bio) {
- if (srp->rq->cmd != srp->rq->__cmd)
- kfree(srp->rq->cmd);
-
+ scsi_req_free_cmd(scsi_req(srp->rq));
blk_end_request_all(srp->rq, -EIO);
srp->rq = NULL;
}
@@ -1279,6 +1277,7 @@ static void
sg_rq_end_io(struct request *rq, int uptodate)
{
struct sg_request *srp = rq->end_io_data;
+ struct scsi_request *req = scsi_req(rq);
Sg_device *sdp;
Sg_fd *sfp;
unsigned long iflags;
@@ -1297,9 +1296,9 @@ sg_rq_end_io(struct request *rq, int uptodate)
if (unlikely(atomic_read(&sdp->detaching)))
pr_info("%s: device detaching\n", __func__);
- sense = rq->sense;
+ sense = req->sense;
result = rq->errors;
- resid = rq->resid_len;
+ resid = req->resid_len;
SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sdp,
"sg_cmd_done: pack_id=%d, res=0x%x\n",
@@ -1333,6 +1332,10 @@ sg_rq_end_io(struct request *rq, int uptodate)
sdp->device->changed = 1;
}
}
+
+ if (req->sense_len)
+ memcpy(srp->sense_b, req->sense, SCSI_SENSE_BUFFERSIZE);
+
/* Rely on write phase to clean out srp status values, so no "else" */
/*
@@ -1342,8 +1345,7 @@ sg_rq_end_io(struct request *rq, int uptodate)
* blk_rq_unmap_user() can be called from user context.
*/
srp->rq = NULL;
- if (rq->cmd != rq->__cmd)
- kfree(rq->cmd);
+ scsi_req_free_cmd(scsi_req(rq));
__blk_put_request(rq->q, rq);
write_lock_irqsave(&sfp->rq_list_lock, iflags);
@@ -1658,6 +1660,7 @@ sg_start_req(Sg_request *srp, unsigned char *cmd)
{
int res;
struct request *rq;
+ struct scsi_request *req;
Sg_fd *sfp = srp->parentfp;
sg_io_hdr_t *hp = &srp->header;
int dxfer_len = (int) hp->dxfer_len;
@@ -1695,22 +1698,23 @@ sg_start_req(Sg_request *srp, unsigned char *cmd)
* With scsi-mq disabled, blk_get_request() with GFP_KERNEL usually
* does not sleep except under memory pressure.
*/
- rq = blk_get_request(q, rw, GFP_KERNEL);
+ rq = blk_get_request(q, hp->dxfer_direction == SG_DXFER_TO_DEV ?
+ REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(rq)) {
kfree(long_cmdp);
return PTR_ERR(rq);
}
+ req = scsi_req(rq);
- blk_rq_set_block_pc(rq);
+ scsi_req_init(rq);
if (hp->cmd_len > BLK_MAX_CDB)
- rq->cmd = long_cmdp;
- memcpy(rq->cmd, cmd, hp->cmd_len);
- rq->cmd_len = hp->cmd_len;
+ req->cmd = long_cmdp;
+ memcpy(req->cmd, cmd, hp->cmd_len);
+ req->cmd_len = hp->cmd_len;
srp->rq = rq;
rq->end_io_data = srp;
- rq->sense = srp->sense_b;
rq->retries = SG_DEFAULT_RETRIES;
if ((dxfer_len <= 0) || (dxfer_dir == SG_DXFER_NONE))
@@ -1790,8 +1794,7 @@ sg_finish_rem_req(Sg_request *srp)
ret = blk_rq_unmap_user(srp->bio);
if (srp->rq) {
- if (srp->rq->cmd != srp->rq->__cmd)
- kfree(srp->rq->cmd);
+ scsi_req_free_cmd(scsi_req(srp->rq));
blk_put_request(srp->rq);
}
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 8702d9c..11c0dfb 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -4499,7 +4499,7 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost,
if (pqi_is_logical_device(device)) {
raid_bypassed = false;
if (device->offload_enabled &&
- scmd->request->cmd_type == REQ_TYPE_FS) {
+ !blk_rq_is_passthrough(scmd->request)) {
rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
scmd, queue_group);
if (rc == 0 ||
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 94352e4..0b29b93 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -117,7 +117,7 @@ static unsigned int sr_check_events(struct cdrom_device_info *cdi,
unsigned int clearing, int slot);
static int sr_packet(struct cdrom_device_info *, struct packet_command *);
-static struct cdrom_device_ops sr_dops = {
+static const struct cdrom_device_ops sr_dops = {
.open = sr_open,
.release = sr_release,
.drive_status = sr_drive_status,
@@ -437,14 +437,17 @@ static int sr_init_command(struct scsi_cmnd *SCpnt)
goto out;
}
- if (rq_data_dir(rq) == WRITE) {
+ switch (req_op(rq)) {
+ case REQ_OP_WRITE:
if (!cd->writeable)
goto out;
SCpnt->cmnd[0] = WRITE_10;
cd->cdi.media_written = 1;
- } else if (rq_data_dir(rq) == READ) {
+ break;
+ case REQ_OP_READ:
SCpnt->cmnd[0] = READ_10;
- } else {
+ break;
+ default:
blk_dump_rq_flags(rq, "Unknown sr command");
goto out;
}
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 5f35b86..81212d4 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -475,7 +475,7 @@ static void st_do_stats(struct scsi_tape *STp, struct request *req)
ktime_t now;
now = ktime_get();
- if (req->cmd[0] == WRITE_6) {
+ if (scsi_req(req)->cmd[0] == WRITE_6) {
now = ktime_sub(now, STp->stats->write_time);
atomic64_add(ktime_to_ns(now), &STp->stats->tot_write_time);
atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time);
@@ -489,7 +489,7 @@ static void st_do_stats(struct scsi_tape *STp, struct request *req)
} else
atomic64_add(atomic_read(&STp->stats->last_write_size),
&STp->stats->write_byte_cnt);
- } else if (req->cmd[0] == READ_6) {
+ } else if (scsi_req(req)->cmd[0] == READ_6) {
now = ktime_sub(now, STp->stats->read_time);
atomic64_add(ktime_to_ns(now), &STp->stats->tot_read_time);
atomic64_add(ktime_to_ns(now), &STp->stats->tot_io_time);
@@ -514,15 +514,18 @@ static void st_do_stats(struct scsi_tape *STp, struct request *req)
static void st_scsi_execute_end(struct request *req, int uptodate)
{
struct st_request *SRpnt = req->end_io_data;
+ struct scsi_request *rq = scsi_req(req);
struct scsi_tape *STp = SRpnt->stp;
struct bio *tmp;
STp->buffer->cmdstat.midlevel_result = SRpnt->result = req->errors;
- STp->buffer->cmdstat.residual = req->resid_len;
+ STp->buffer->cmdstat.residual = rq->resid_len;
st_do_stats(STp, req);
tmp = SRpnt->bio;
+ if (rq->sense_len)
+ memcpy(SRpnt->sense, rq->sense, SCSI_SENSE_BUFFERSIZE);
if (SRpnt->waiting)
complete(SRpnt->waiting);
@@ -535,17 +538,18 @@ static int st_scsi_execute(struct st_request *SRpnt, const unsigned char *cmd,
int timeout, int retries)
{
struct request *req;
+ struct scsi_request *rq;
struct rq_map_data *mdata = &SRpnt->stp->buffer->map_data;
int err = 0;
- int write = (data_direction == DMA_TO_DEVICE);
struct scsi_tape *STp = SRpnt->stp;
- req = blk_get_request(SRpnt->stp->device->request_queue, write,
- GFP_KERNEL);
+ req = blk_get_request(SRpnt->stp->device->request_queue,
+ data_direction == DMA_TO_DEVICE ?
+ REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(req))
return DRIVER_ERROR << 24;
-
- blk_rq_set_block_pc(req);
+ rq = scsi_req(req);
+ scsi_req_init(req);
req->rq_flags |= RQF_QUIET;
mdata->null_mapped = 1;
@@ -571,11 +575,9 @@ static int st_scsi_execute(struct st_request *SRpnt, const unsigned char *cmd,
}
SRpnt->bio = req->bio;
- req->cmd_len = COMMAND_SIZE(cmd[0]);
- memset(req->cmd, 0, BLK_MAX_CDB);
- memcpy(req->cmd, cmd, req->cmd_len);
- req->sense = SRpnt->sense;
- req->sense_len = 0;
+ rq->cmd_len = COMMAND_SIZE(cmd[0]);
+ memset(rq->cmd, 0, BLK_MAX_CDB);
+ memcpy(rq->cmd, cmd, rq->cmd_len);
req->timeout = timeout;
req->retries = retries;
req->end_io_data = SRpnt;
diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c
index 88db699..bcf7d05 100644
--- a/drivers/scsi/sun3_scsi.c
+++ b/drivers/scsi/sun3_scsi.c
@@ -260,7 +260,7 @@ static int sun3scsi_dma_xfer_len(struct NCR5380_hostdata *hostdata,
{
int wanted_len = cmd->SCp.this_residual;
- if (wanted_len < DMA_MIN_SIZE || cmd->request->cmd_type != REQ_TYPE_FS)
+ if (wanted_len < DMA_MIN_SIZE || blk_rq_is_passthrough(cmd->request))
return 0;
return wanted_len;
diff --git a/drivers/target/Kconfig b/drivers/target/Kconfig
index 2573612..e2bc999 100644
--- a/drivers/target/Kconfig
+++ b/drivers/target/Kconfig
@@ -4,6 +4,7 @@ menuconfig TARGET_CORE
depends on SCSI && BLOCK
select CONFIGFS_FS
select CRC_T10DIF
+ select BLK_SCSI_REQUEST # only for scsi_command_size_tbl..
default n
help
Say Y or M here to enable the TCM Storage Engine and ConfigFS enabled
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 04d7aa7..a8f8e53 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -1005,7 +1005,8 @@ pscsi_execute_cmd(struct se_cmd *cmd)
scsi_command_size(cmd->t_task_cdb));
req = blk_get_request(pdv->pdv_sd->request_queue,
- (cmd->data_direction == DMA_TO_DEVICE),
+ cmd->data_direction == DMA_TO_DEVICE ?
+ REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
GFP_KERNEL);
if (IS_ERR(req)) {
pr_err("PSCSI: blk_get_request() failed\n");
@@ -1013,7 +1014,7 @@ pscsi_execute_cmd(struct se_cmd *cmd)
goto fail;
}
- blk_rq_set_block_pc(req);
+ scsi_req_init(req);
if (sgl) {
ret = pscsi_map_sg(cmd, sgl, sgl_nents, req);
@@ -1023,10 +1024,8 @@ pscsi_execute_cmd(struct se_cmd *cmd)
req->end_io = pscsi_req_done;
req->end_io_data = cmd;
- req->cmd_len = scsi_command_size(pt->pscsi_cdb);
- req->cmd = &pt->pscsi_cdb[0];
- req->sense = &pt->pscsi_sense[0];
- req->sense_len = 0;
+ scsi_req(req)->cmd_len = scsi_command_size(pt->pscsi_cdb);
+ scsi_req(req)->cmd = &pt->pscsi_cdb[0];
if (pdv->pdv_sd->type == TYPE_DISK)
req->timeout = PS_TIMEOUT_DISK;
else
@@ -1075,7 +1074,7 @@ static void pscsi_req_done(struct request *req, int uptodate)
struct pscsi_plugin_task *pt = cmd->priv;
pt->pscsi_result = req->errors;
- pt->pscsi_resid = req->resid_len;
+ pt->pscsi_resid = scsi_req(req)->resid_len;
cmd->scsi_status = status_byte(pt->pscsi_result) << 1;
if (cmd->scsi_status) {
@@ -1096,6 +1095,7 @@ static void pscsi_req_done(struct request *req, int uptodate)
break;
}
+ memcpy(pt->pscsi_sense, scsi_req(req)->sense, TRANSPORT_SENSE_BUFFER);
__blk_put_request(req->q, req);
kfree(pt);
}
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 3c47614..73031ec 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -884,6 +884,8 @@ static void bdev_evict_inode(struct inode *inode)
spin_lock(&bdev_lock);
list_del_init(&bdev->bd_list);
spin_unlock(&bdev_lock);
+ if (bdev->bd_bdi != &noop_backing_dev_info)
+ bdi_put(bdev->bd_bdi);
}
static const struct super_operations bdev_sops = {
@@ -954,6 +956,21 @@ static int bdev_set(struct inode *inode, void *data)
static LIST_HEAD(all_bdevs);
+/*
+ * If there is a bdev inode for this device, unhash it so that it gets evicted
+ * as soon as last inode reference is dropped.
+ */
+void bdev_unhash_inode(dev_t dev)
+{
+ struct inode *inode;
+
+ inode = ilookup5(blockdev_superblock, hash(dev), bdev_test, &dev);
+ if (inode) {
+ remove_inode_hash(inode);
+ iput(inode);
+ }
+}
+
struct block_device *bdget(dev_t dev)
{
struct block_device *bdev;
@@ -971,6 +988,7 @@ struct block_device *bdget(dev_t dev)
bdev->bd_contains = NULL;
bdev->bd_super = NULL;
bdev->bd_inode = inode;
+ bdev->bd_bdi = &noop_backing_dev_info;
bdev->bd_block_size = (1 << inode->i_blkbits);
bdev->bd_part_count = 0;
bdev->bd_invalidated = 0;
@@ -1527,6 +1545,8 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
bdev->bd_disk = disk;
bdev->bd_queue = disk->queue;
bdev->bd_contains = bdev;
+ if (bdev->bd_bdi == &noop_backing_dev_info)
+ bdev->bd_bdi = bdi_get(disk->queue->backing_dev_info);
if (!partno) {
ret = -ENXIO;
@@ -1622,6 +1642,8 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
bdev->bd_disk = NULL;
bdev->bd_part = NULL;
bdev->bd_queue = NULL;
+ bdi_put(bdev->bd_bdi);
+ bdev->bd_bdi = &noop_backing_dev_info;
if (bdev != bdev->bd_contains)
__blkdev_put(bdev->bd_contains, mode, 1);
bdev->bd_contains = NULL;
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 1800416..37a31b1 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1800,7 +1800,7 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits)
list_for_each_entry_rcu(device, &info->fs_devices->devices, dev_list) {
if (!device->bdev)
continue;
- bdi = blk_get_backing_dev_info(device->bdev);
+ bdi = device->bdev->bd_bdi;
if (bdi_congested(bdi, bdi_bits)) {
ret = 1;
break;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 3c3c69c..b2e7007 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -366,7 +366,7 @@ static noinline void run_scheduled_bios(struct btrfs_device *device)
*/
blk_start_plug(&plug);
- bdi = blk_get_backing_dev_info(device->bdev);
+ bdi = device->bdev->bd_bdi;
limit = btrfs_async_submit_limit(fs_info);
limit = limit * 2 / 3;
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index f17fcf8..7fb1732 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -248,6 +248,42 @@ static struct file_system_type debug_fs_type = {
};
MODULE_ALIAS_FS("debugfs");
+/**
+ * debugfs_lookup() - look up an existing debugfs file
+ * @name: a pointer to a string containing the name of the file to look up.
+ * @parent: a pointer to the parent dentry of the file.
+ *
+ * This function will return a pointer to a dentry if it succeeds. If the file
+ * doesn't exist or an error occurs, %NULL will be returned. The returned
+ * dentry must be passed to dput() when it is no longer needed.
+ *
+ * If debugfs is not enabled in the kernel, the value -%ENODEV will be
+ * returned.
+ */
+struct dentry *debugfs_lookup(const char *name, struct dentry *parent)
+{
+ struct dentry *dentry;
+
+ if (IS_ERR(parent))
+ return NULL;
+
+ if (!parent)
+ parent = debugfs_mount->mnt_root;
+
+ inode_lock(d_inode(parent));
+ dentry = lookup_one_len(name, parent, strlen(name));
+ inode_unlock(d_inode(parent));
+
+ if (IS_ERR(dentry))
+ return NULL;
+ if (!d_really_is_positive(dentry)) {
+ dput(dentry);
+ return NULL;
+ }
+ return dentry;
+}
+EXPORT_SYMBOL_GPL(debugfs_lookup);
+
static struct dentry *start_creating(const char *name, struct dentry *parent)
{
struct dentry *dentry;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 5870479..b108e7b 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1227,7 +1227,7 @@ static int set_gfs2_super(struct super_block *s, void *data)
* We set the bdi here to the queue backing, file systems can
* overwrite this in ->fill_super()
*/
- s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info;
+ s->s_bdi = bdev_get_queue(s->s_bdev)->backing_dev_info;
return 0;
}
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 47febcf..20b1c17 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -104,6 +104,7 @@ config NFSD_SCSILAYOUT
depends on NFSD_V4 && BLOCK
select NFSD_PNFS
select EXPORTFS_BLOCK_OPS
+ select BLK_SCSI_REQUEST
help
This option enables support for the exporting pNFS SCSI layouts
in the kernel's NFS server. The pNFS SCSI layout enables NFS
diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c
index 0780ff8..a06115e 100644
--- a/fs/nfsd/blocklayout.c
+++ b/fs/nfsd/blocklayout.c
@@ -10,6 +10,7 @@
#include <linux/nfsd/debug.h>
#include <scsi/scsi_proto.h>
#include <scsi/scsi_common.h>
+#include <scsi/scsi_request.h>
#include "blocklayoutxdr.h"
#include "pnfs.h"
@@ -213,6 +214,7 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev,
{
struct request_queue *q = bdev->bd_disk->queue;
struct request *rq;
+ struct scsi_request *req;
size_t bufflen = 252, len, id_len;
u8 *buf, *d, type, assoc;
int error;
@@ -221,23 +223,24 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev,
if (!buf)
return -ENOMEM;
- rq = blk_get_request(q, READ, GFP_KERNEL);
+ rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(rq)) {
error = -ENOMEM;
goto out_free_buf;
}
- blk_rq_set_block_pc(rq);
+ req = scsi_req(rq);
+ scsi_req_init(rq);
error = blk_rq_map_kern(q, rq, buf, bufflen, GFP_KERNEL);
if (error)
goto out_put_request;
- rq->cmd[0] = INQUIRY;
- rq->cmd[1] = 1;
- rq->cmd[2] = 0x83;
- rq->cmd[3] = bufflen >> 8;
- rq->cmd[4] = bufflen & 0xff;
- rq->cmd_len = COMMAND_SIZE(INQUIRY);
+ req->cmd[0] = INQUIRY;
+ req->cmd[1] = 1;
+ req->cmd[2] = 0x83;
+ req->cmd[3] = bufflen >> 8;
+ req->cmd[4] = bufflen & 0xff;
+ req->cmd_len = COMMAND_SIZE(INQUIRY);
error = blk_execute_rq(rq->q, NULL, rq, 1);
if (error) {
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 12eeae6..e1872f3 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1068,7 +1068,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_time_gran = 1;
sb->s_max_links = NILFS_LINK_MAX;
- sb->s_bdi = &bdev_get_queue(sb->s_bdev)->backing_dev_info;
+ sb->s_bdi = bdev_get_queue(sb->s_bdev)->backing_dev_info;
err = load_nilfs(nilfs, sb);
if (err)
diff --git a/fs/super.c b/fs/super.c
index 1709ed0..ea662b0 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1047,7 +1047,7 @@ static int set_bdev_super(struct super_block *s, void *data)
* We set the bdi here to the queue backing, file systems can
* overwrite this in ->fill_super()
*/
- s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info;
+ s->s_bdi = bdev_get_queue(s->s_bdev)->backing_dev_info;
return 0;
}
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index ac3b4db..8c7d01b 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -758,7 +758,7 @@ xfs_buf_readahead_map(
int nmaps,
const struct xfs_buf_ops *ops)
{
- if (bdi_read_congested(target->bt_bdi))
+ if (bdi_read_congested(target->bt_bdev->bd_bdi))
return;
xfs_buf_read_map(target, map, nmaps,
@@ -1791,7 +1791,6 @@ xfs_alloc_buftarg(
btp->bt_mount = mp;
btp->bt_dev = bdev->bd_dev;
btp->bt_bdev = bdev;
- btp->bt_bdi = blk_get_backing_dev_info(bdev);
if (xfs_setsize_buftarg_early(btp, bdev))
goto error;
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
index 8a9d3a9..3c867e5 100644
--- a/fs/xfs/xfs_buf.h
+++ b/fs/xfs/xfs_buf.h
@@ -109,7 +109,6 @@ typedef unsigned int xfs_buf_flags_t;
typedef struct xfs_buftarg {
dev_t bt_dev;
struct block_device *bt_bdev;
- struct backing_dev_info *bt_bdi;
struct xfs_mount *bt_mount;
unsigned int bt_meta_sectorsize;
size_t bt_meta_sectormask;
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index e850e76..ad95581 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -10,6 +10,7 @@
#include <linux/flex_proportions.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
+#include <linux/kref.h>
struct page;
struct device;
@@ -144,6 +145,7 @@ struct backing_dev_info {
char *name;
+ struct kref refcnt; /* Reference counter for the structure */
unsigned int capabilities; /* Device capabilities */
unsigned int min_ratio;
unsigned int max_ratio, max_prop_frac;
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 43b93a9..c52a48c 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -18,7 +18,14 @@
#include <linux/slab.h>
int __must_check bdi_init(struct backing_dev_info *bdi);
-void bdi_exit(struct backing_dev_info *bdi);
+
+static inline struct backing_dev_info *bdi_get(struct backing_dev_info *bdi)
+{
+ kref_get(&bdi->refcnt);
+ return bdi;
+}
+
+void bdi_put(struct backing_dev_info *bdi);
__printf(3, 4)
int bdi_register(struct backing_dev_info *bdi, struct device *parent,
@@ -29,6 +36,7 @@ void bdi_unregister(struct backing_dev_info *bdi);
int __must_check bdi_setup_and_register(struct backing_dev_info *, char *);
void bdi_destroy(struct backing_dev_info *bdi);
+struct backing_dev_info *bdi_alloc_node(gfp_t gfp_mask, int node_id);
void wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
bool range_cyclic, enum wb_reason reason);
@@ -183,7 +191,7 @@ static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
sb = inode->i_sb;
#ifdef CONFIG_BLOCK
if (sb_is_blkdev_sb(sb))
- return blk_get_backing_dev_info(I_BDEV(inode));
+ return I_BDEV(inode)->bd_bdi;
#endif
return sb->s_bdi;
}
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 4a2ab5d9..8e4df3d 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -22,6 +22,7 @@ struct blk_mq_hw_ctx {
unsigned long flags; /* BLK_MQ_F_* flags */
+ void *sched_data;
struct request_queue *queue;
struct blk_flush_queue *fq;
@@ -35,6 +36,7 @@ struct blk_mq_hw_ctx {
atomic_t wait_index;
struct blk_mq_tags *tags;
+ struct blk_mq_tags *sched_tags;
struct srcu_struct queue_rq_srcu;
@@ -60,7 +62,7 @@ struct blk_mq_hw_ctx {
struct blk_mq_tag_set {
unsigned int *mq_map;
- struct blk_mq_ops *ops;
+ const struct blk_mq_ops *ops;
unsigned int nr_hw_queues;
unsigned int queue_depth; /* max hw supported */
unsigned int reserved_tags;
@@ -151,11 +153,13 @@ enum {
BLK_MQ_F_SG_MERGE = 1 << 2,
BLK_MQ_F_DEFER_ISSUE = 1 << 4,
BLK_MQ_F_BLOCKING = 1 << 5,
+ BLK_MQ_F_NO_SCHED = 1 << 6,
BLK_MQ_F_ALLOC_POLICY_START_BIT = 8,
BLK_MQ_F_ALLOC_POLICY_BITS = 1,
BLK_MQ_S_STOPPED = 0,
BLK_MQ_S_TAG_ACTIVE = 1,
+ BLK_MQ_S_SCHED_RESTART = 2,
BLK_MQ_MAX_DEPTH = 10240,
@@ -179,14 +183,13 @@ void blk_mq_free_tag_set(struct blk_mq_tag_set *set);
void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule);
-void blk_mq_insert_request(struct request *, bool, bool, bool);
void blk_mq_free_request(struct request *rq);
-void blk_mq_free_hctx_request(struct blk_mq_hw_ctx *, struct request *rq);
bool blk_mq_can_queue(struct blk_mq_hw_ctx *);
enum {
BLK_MQ_REQ_NOWAIT = (1 << 0), /* return when out of requests */
BLK_MQ_REQ_RESERVED = (1 << 1), /* allocate from reserved pool */
+ BLK_MQ_REQ_INTERNAL = (1 << 2), /* allocate internal/sched tag */
};
struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 519ea2c..d703acb 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -162,6 +162,13 @@ enum req_opf {
/* write the zero filled sector many times */
REQ_OP_WRITE_ZEROES = 8,
+ /* SCSI passthrough using struct scsi_request */
+ REQ_OP_SCSI_IN = 32,
+ REQ_OP_SCSI_OUT = 33,
+ /* Driver private requests */
+ REQ_OP_DRV_IN = 34,
+ REQ_OP_DRV_OUT = 35,
+
REQ_OP_LAST,
};
@@ -221,6 +228,15 @@ static inline bool op_is_write(unsigned int op)
}
/*
+ * Check if the bio or request is one that needs special treatment in the
+ * flush state machine.
+ */
+static inline bool op_is_flush(unsigned int op)
+{
+ return op & (REQ_FUA | REQ_PREFLUSH);
+}
+
+/*
* Reads are always treated as synchronous, as are requests with the FUA or
* PREFLUSH flag. Other operations may be marked as synchronous using the
* REQ_SYNC flag.
@@ -232,22 +248,29 @@ static inline bool op_is_sync(unsigned int op)
}
typedef unsigned int blk_qc_t;
-#define BLK_QC_T_NONE -1U
-#define BLK_QC_T_SHIFT 16
+#define BLK_QC_T_NONE -1U
+#define BLK_QC_T_SHIFT 16
+#define BLK_QC_T_INTERNAL (1U << 31)
static inline bool blk_qc_t_valid(blk_qc_t cookie)
{
return cookie != BLK_QC_T_NONE;
}
-static inline blk_qc_t blk_tag_to_qc_t(unsigned int tag, unsigned int queue_num)
+static inline blk_qc_t blk_tag_to_qc_t(unsigned int tag, unsigned int queue_num,
+ bool internal)
{
- return tag | (queue_num << BLK_QC_T_SHIFT);
+ blk_qc_t ret = tag | (queue_num << BLK_QC_T_SHIFT);
+
+ if (internal)
+ ret |= BLK_QC_T_INTERNAL;
+
+ return ret;
}
static inline unsigned int blk_qc_t_to_queue_num(blk_qc_t cookie)
{
- return cookie >> BLK_QC_T_SHIFT;
+ return (cookie & ~BLK_QC_T_INTERNAL) >> BLK_QC_T_SHIFT;
}
static inline unsigned int blk_qc_t_to_tag(blk_qc_t cookie)
@@ -255,6 +278,11 @@ static inline unsigned int blk_qc_t_to_tag(blk_qc_t cookie)
return cookie & ((1u << BLK_QC_T_SHIFT) - 1);
}
+static inline bool blk_qc_t_is_internal(blk_qc_t cookie)
+{
+ return (cookie & BLK_QC_T_INTERNAL) != 0;
+}
+
struct blk_issue_stat {
u64 time;
};
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1ca8e8f..aecca0e 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -71,15 +71,6 @@ struct request_list {
};
/*
- * request command types
- */
-enum rq_cmd_type_bits {
- REQ_TYPE_FS = 1, /* fs request */
- REQ_TYPE_BLOCK_PC, /* scsi command */
- REQ_TYPE_DRV_PRIV, /* driver defined types from here */
-};
-
-/*
* request flags */
typedef __u32 __bitwise req_flags_t;
@@ -128,8 +119,6 @@ typedef __u32 __bitwise req_flags_t;
#define RQF_NOMERGE_FLAGS \
(RQF_STARTED | RQF_SOFTBARRIER | RQF_FLUSH_SEQ | RQF_SPECIAL_PAYLOAD)
-#define BLK_MAX_CDB 16
-
/*
* Try to put the fields that are referenced together in the same cacheline.
*
@@ -147,13 +136,16 @@ struct request {
struct blk_mq_ctx *mq_ctx;
int cpu;
- unsigned cmd_type;
unsigned int cmd_flags; /* op and common flags */
req_flags_t rq_flags;
+
+ int internal_tag;
+
unsigned long atomic_flags;
/* the following two fields are internal, NEVER access directly */
unsigned int __data_len; /* total data len */
+ int tag;
sector_t __sector; /* sector cursor */
struct bio *bio;
@@ -222,20 +214,9 @@ struct request {
void *special; /* opaque pointer available for LLD use */
- int tag;
int errors;
- /*
- * when request is used as a packet command carrier
- */
- unsigned char __cmd[BLK_MAX_CDB];
- unsigned char *cmd;
- unsigned short cmd_len;
-
unsigned int extra_len; /* length of alignment and padding */
- unsigned int sense_len;
- unsigned int resid_len; /* residual count */
- void *sense;
unsigned long deadline;
struct list_head timeout_list;
@@ -252,6 +233,21 @@ struct request {
struct request *next_rq;
};
+static inline bool blk_rq_is_scsi(struct request *rq)
+{
+ return req_op(rq) == REQ_OP_SCSI_IN || req_op(rq) == REQ_OP_SCSI_OUT;
+}
+
+static inline bool blk_rq_is_private(struct request *rq)
+{
+ return req_op(rq) == REQ_OP_DRV_IN || req_op(rq) == REQ_OP_DRV_OUT;
+}
+
+static inline bool blk_rq_is_passthrough(struct request *rq)
+{
+ return blk_rq_is_scsi(rq) || blk_rq_is_private(rq);
+}
+
static inline unsigned short req_get_ioprio(struct request *req)
{
return req->ioprio;
@@ -271,6 +267,8 @@ typedef void (softirq_done_fn)(struct request *);
typedef int (dma_drain_needed_fn)(struct request *);
typedef int (lld_busy_fn) (struct request_queue *q);
typedef int (bsg_job_fn) (struct bsg_job *);
+typedef int (init_rq_fn)(struct request_queue *, struct request *, gfp_t);
+typedef void (exit_rq_fn)(struct request_queue *, struct request *);
enum blk_eh_timer_return {
BLK_EH_NOT_HANDLED,
@@ -333,6 +331,7 @@ struct queue_limits {
unsigned short logical_block_size;
unsigned short max_segments;
unsigned short max_integrity_segments;
+ unsigned short max_discard_segments;
unsigned char misaligned;
unsigned char discard_misaligned;
@@ -406,8 +405,10 @@ struct request_queue {
rq_timed_out_fn *rq_timed_out_fn;
dma_drain_needed_fn *dma_drain_needed;
lld_busy_fn *lld_busy_fn;
+ init_rq_fn *init_rq_fn;
+ exit_rq_fn *exit_rq_fn;
- struct blk_mq_ops *mq_ops;
+ const struct blk_mq_ops *mq_ops;
unsigned int *mq_map;
@@ -432,7 +433,8 @@ struct request_queue {
*/
struct delayed_work delay_work;
- struct backing_dev_info backing_dev_info;
+ struct backing_dev_info *backing_dev_info;
+ struct disk_devt *disk_devt;
/*
* The queue owner gets to use this for whatever they like.
@@ -569,7 +571,15 @@ struct request_queue {
struct list_head tag_set_list;
struct bio_set *bio_split;
+#ifdef CONFIG_BLK_DEBUG_FS
+ struct dentry *debugfs_dir;
+ struct dentry *mq_debugfs_dir;
+#endif
+
bool mq_sysfs_init_done;
+
+ size_t cmd_size;
+ void *rq_alloc_data;
};
#define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */
@@ -600,6 +610,7 @@ struct request_queue {
#define QUEUE_FLAG_FLUSH_NQ 25 /* flush not queueuable */
#define QUEUE_FLAG_DAX 26 /* device supports DAX */
#define QUEUE_FLAG_STATS 27 /* track rq completion times */
+#define QUEUE_FLAG_RESTART 28 /* queue needs restart at completion */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
@@ -695,9 +706,10 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \
REQ_FAILFAST_DRIVER))
-#define blk_account_rq(rq) \
- (((rq)->rq_flags & RQF_STARTED) && \
- ((rq)->cmd_type == REQ_TYPE_FS))
+static inline bool blk_account_rq(struct request *rq)
+{
+ return (rq->rq_flags & RQF_STARTED) && !blk_rq_is_passthrough(rq);
+}
#define blk_rq_cpu_valid(rq) ((rq)->cpu != -1)
#define blk_bidi_rq(rq) ((rq)->next_rq != NULL)
@@ -772,7 +784,7 @@ static inline void blk_clear_rl_full(struct request_list *rl, bool sync)
static inline bool rq_mergeable(struct request *rq)
{
- if (rq->cmd_type != REQ_TYPE_FS)
+ if (blk_rq_is_passthrough(rq))
return false;
if (req_op(rq) == REQ_OP_FLUSH)
@@ -910,7 +922,6 @@ extern void blk_rq_init(struct request_queue *q, struct request *rq);
extern void blk_put_request(struct request *);
extern void __blk_put_request(struct request_queue *, struct request *);
extern struct request *blk_get_request(struct request_queue *, int, gfp_t);
-extern void blk_rq_set_block_pc(struct request *);
extern void blk_requeue_request(struct request_queue *, struct request *);
extern int blk_lld_busy(struct request_queue *q);
extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
@@ -1047,7 +1058,7 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq,
{
struct request_queue *q = rq->q;
- if (unlikely(rq->cmd_type != REQ_TYPE_FS))
+ if (blk_rq_is_passthrough(rq))
return q->limits.max_hw_sectors;
if (!q->limits.chunk_sectors ||
@@ -1129,14 +1140,15 @@ extern void blk_unprep_request(struct request *);
extern struct request_queue *blk_init_queue_node(request_fn_proc *rfn,
spinlock_t *lock, int node_id);
extern struct request_queue *blk_init_queue(request_fn_proc *, spinlock_t *);
-extern struct request_queue *blk_init_allocated_queue(struct request_queue *,
- request_fn_proc *, spinlock_t *);
+extern int blk_init_allocated_queue(struct request_queue *);
extern void blk_cleanup_queue(struct request_queue *);
extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
extern void blk_queue_bounce_limit(struct request_queue *, u64);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_segments(struct request_queue *, unsigned short);
+extern void blk_queue_max_discard_segments(struct request_queue *,
+ unsigned short);
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_max_discard_sectors(struct request_queue *q,
unsigned int max_discard_sectors);
@@ -1179,8 +1191,16 @@ extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua);
-extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
+/*
+ * Number of physical segments as sent to the device.
+ *
+ * Normally this is the number of discontiguous data segments sent by the
+ * submitter. But for data-less command like discard we might have no
+ * actual data segments submitted, but the driver might have to add it's
+ * own special payload. In that case we still return 1 here so that this
+ * special payload will be mapped.
+ */
static inline unsigned short blk_rq_nr_phys_segments(struct request *rq)
{
if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
@@ -1188,6 +1208,15 @@ static inline unsigned short blk_rq_nr_phys_segments(struct request *rq)
return rq->nr_phys_segments;
}
+/*
+ * Number of discard segments (or ranges) the driver needs to fill in.
+ * Each discard bio merged into a request is counted as one segment.
+ */
+static inline unsigned short blk_rq_nr_discard_segments(struct request *rq)
+{
+ return max_t(unsigned short, rq->nr_phys_segments, 1);
+}
+
extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *);
extern void blk_dump_rq_flags(struct request *, char *);
extern long nr_blockdev_pages(void);
@@ -1376,6 +1405,11 @@ static inline unsigned short queue_max_segments(struct request_queue *q)
return q->limits.max_segments;
}
+static inline unsigned short queue_max_discard_segments(struct request_queue *q)
+{
+ return q->limits.max_discard_segments;
+}
+
static inline unsigned int queue_max_segment_size(struct request_queue *q)
{
return q->limits.max_segment_size;
@@ -1620,6 +1654,25 @@ static inline bool bvec_gap_to_prev(struct request_queue *q,
return __bvec_gap_to_prev(q, bprv, offset);
}
+/*
+ * Check if the two bvecs from two bios can be merged to one segment.
+ * If yes, no need to check gap between the two bios since the 1st bio
+ * and the 1st bvec in the 2nd bio can be handled in one segment.
+ */
+static inline bool bios_segs_mergeable(struct request_queue *q,
+ struct bio *prev, struct bio_vec *prev_last_bv,
+ struct bio_vec *next_first_bv)
+{
+ if (!BIOVEC_PHYS_MERGEABLE(prev_last_bv, next_first_bv))
+ return false;
+ if (!BIOVEC_SEG_BOUNDARY(q, prev_last_bv, next_first_bv))
+ return false;
+ if (prev->bi_seg_back_size + next_first_bv->bv_len >
+ queue_max_segment_size(q))
+ return false;
+ return true;
+}
+
static inline bool bio_will_gap(struct request_queue *q, struct bio *prev,
struct bio *next)
{
@@ -1629,7 +1682,8 @@ static inline bool bio_will_gap(struct request_queue *q, struct bio *prev,
bio_get_last_bvec(prev, &pb);
bio_get_first_bvec(next, &nb);
- return __bvec_gap_to_prev(q, &pb, nb.bv_offset);
+ if (!bios_segs_mergeable(q, prev, &pb, &nb))
+ return __bvec_gap_to_prev(q, &pb, nb.bv_offset);
}
return false;
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index e417f08..d2e9085 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -30,9 +30,6 @@ struct blk_trace {
extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
extern void blk_trace_shutdown(struct request_queue *);
-extern int do_blk_trace_setup(struct request_queue *q, char *name,
- dev_t dev, struct block_device *bdev,
- struct blk_user_trace_setup *buts);
extern __printf(2, 3)
void __trace_note_message(struct blk_trace *, const char *fmt, ...);
@@ -80,7 +77,6 @@ extern struct attribute_group blk_trace_attr_group;
#else /* !CONFIG_BLK_DEV_IO_TRACE */
# define blk_trace_ioctl(bdev, cmd, arg) (-ENOTTY)
# define blk_trace_shutdown(q) do { } while (0)
-# define do_blk_trace_setup(q, name, dev, bdev, buts) (-ENOTTY)
# define blk_add_driver_data(q, rq, data, len) do {} while (0)
# define blk_trace_setup(q, name, dev, bdev, arg) (-ENOTTY)
# define blk_trace_startstop(q, start) (-ENOTTY)
@@ -110,16 +106,16 @@ struct compat_blk_user_trace_setup {
#endif
-#if defined(CONFIG_EVENT_TRACING) && defined(CONFIG_BLOCK)
+extern void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes);
-static inline int blk_cmd_buf_len(struct request *rq)
+static inline sector_t blk_rq_trace_sector(struct request *rq)
{
- return (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? rq->cmd_len * 3 : 1;
+ return blk_rq_is_passthrough(rq) ? 0 : blk_rq_pos(rq);
}
-extern void blk_dump_cmd(char *buf, struct request *rq);
-extern void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes);
-
-#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
+static inline unsigned int blk_rq_trace_nr_sectors(struct request *rq)
+{
+ return blk_rq_is_passthrough(rq) ? 0 : blk_rq_sectors(rq);
+}
#endif
diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h
index 657a718..e34dde2 100644
--- a/include/linux/bsg-lib.h
+++ b/include/linux/bsg-lib.h
@@ -66,9 +66,8 @@ struct bsg_job {
void bsg_job_done(struct bsg_job *job, int result,
unsigned int reply_payload_rcv_len);
-int bsg_setup_queue(struct device *dev, struct request_queue *q, char *name,
- bsg_job_fn *job_fn, int dd_job_size);
-void bsg_request_fn(struct request_queue *q);
+struct request_queue *bsg_setup_queue(struct device *dev, char *name,
+ bsg_job_fn *job_fn, int dd_job_size);
void bsg_job_put(struct bsg_job *job);
int __must_check bsg_job_get(struct bsg_job *job);
diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
index 8609d57..6e8f209 100644
--- a/include/linux/cdrom.h
+++ b/include/linux/cdrom.h
@@ -36,7 +36,7 @@ struct packet_command
/* Uniform cdrom data structures for cdrom.c */
struct cdrom_device_info {
- struct cdrom_device_ops *ops; /* link to device_ops */
+ const struct cdrom_device_ops *ops; /* link to device_ops */
struct list_head list; /* linked list of all device_info */
struct gendisk *disk; /* matching block layer disk */
void *handle; /* driver-dependent data */
@@ -87,7 +87,6 @@ struct cdrom_device_ops {
/* driver specifications */
const int capability; /* capability flags */
- int n_minors; /* number of active minor devices */
/* handle uniform packets for scsi type devices (scsi,atapi) */
int (*generic_packet) (struct cdrom_device_info *,
struct packet_command *);
@@ -123,6 +122,8 @@ extern int cdrom_mode_sense(struct cdrom_device_info *cdi,
int page_code, int page_control);
extern void init_cdrom_command(struct packet_command *cgc,
void *buffer, int len, int type);
+extern int cdrom_dummy_generic_packet(struct cdrom_device_info *cdi,
+ struct packet_command *cgc);
/* The SCSI spec says there could be 256 slots. */
#define CDROM_MAX_SLOTS 256
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 014cc56..c0befcf 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -80,6 +80,8 @@ static const struct file_operations __fops = { \
#if defined(CONFIG_DEBUG_FS)
+struct dentry *debugfs_lookup(const char *name, struct dentry *parent);
+
struct dentry *debugfs_create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops);
@@ -181,6 +183,12 @@ ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf,
* want to duplicate the design decision mistakes of procfs and devfs again.
*/
+static inline struct dentry *debugfs_lookup(const char *name,
+ struct dentry *parent)
+{
+ return ERR_PTR(-ENODEV);
+}
+
static inline struct dentry *debugfs_create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops)
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index ef7962e..a7e6903 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -55,8 +55,6 @@ typedef void (*dm_dtr_fn) (struct dm_target *ti);
* = 2: The target wants to push back the io
*/
typedef int (*dm_map_fn) (struct dm_target *ti, struct bio *bio);
-typedef int (*dm_map_request_fn) (struct dm_target *ti, struct request *clone,
- union map_info *map_context);
typedef int (*dm_clone_and_map_request_fn) (struct dm_target *ti,
struct request *rq,
union map_info *map_context,
@@ -163,7 +161,6 @@ struct target_type {
dm_ctr_fn ctr;
dm_dtr_fn dtr;
dm_map_fn map;
- dm_map_request_fn map_rq;
dm_clone_and_map_request_fn clone_and_map_rq;
dm_release_clone_request_fn release_clone_rq;
dm_endio_fn end_io;
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index b276e9e..aebecc4 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -9,12 +9,22 @@
struct io_cq;
struct elevator_type;
-typedef int (elevator_merge_fn) (struct request_queue *, struct request **,
+/*
+ * Return values from elevator merger
+ */
+enum elv_merge {
+ ELEVATOR_NO_MERGE = 0,
+ ELEVATOR_FRONT_MERGE = 1,
+ ELEVATOR_BACK_MERGE = 2,
+ ELEVATOR_DISCARD_MERGE = 3,
+};
+
+typedef enum elv_merge (elevator_merge_fn) (struct request_queue *, struct request **,
struct bio *);
typedef void (elevator_merge_req_fn) (struct request_queue *, struct request *, struct request *);
-typedef void (elevator_merged_fn) (struct request_queue *, struct request *, int);
+typedef void (elevator_merged_fn) (struct request_queue *, struct request *, enum elv_merge);
typedef int (elevator_allow_bio_merge_fn) (struct request_queue *,
struct request *, struct bio *);
@@ -77,6 +87,34 @@ struct elevator_ops
elevator_registered_fn *elevator_registered_fn;
};
+struct blk_mq_alloc_data;
+struct blk_mq_hw_ctx;
+
+struct elevator_mq_ops {
+ int (*init_sched)(struct request_queue *, struct elevator_type *);
+ void (*exit_sched)(struct elevator_queue *);
+
+ bool (*allow_merge)(struct request_queue *, struct request *, struct bio *);
+ bool (*bio_merge)(struct blk_mq_hw_ctx *, struct bio *);
+ int (*request_merge)(struct request_queue *q, struct request **, struct bio *);
+ void (*request_merged)(struct request_queue *, struct request *, enum elv_merge);
+ void (*requests_merged)(struct request_queue *, struct request *, struct request *);
+ struct request *(*get_request)(struct request_queue *, unsigned int, struct blk_mq_alloc_data *);
+ void (*put_request)(struct request *);
+ void (*insert_requests)(struct blk_mq_hw_ctx *, struct list_head *, bool);
+ struct request *(*dispatch_request)(struct blk_mq_hw_ctx *);
+ bool (*has_work)(struct blk_mq_hw_ctx *);
+ void (*completed_request)(struct blk_mq_hw_ctx *, struct request *);
+ void (*started_request)(struct request *);
+ void (*requeue_request)(struct request *);
+ struct request *(*former_request)(struct request_queue *, struct request *);
+ struct request *(*next_request)(struct request_queue *, struct request *);
+ int (*get_rq_priv)(struct request_queue *, struct request *, struct bio *);
+ void (*put_rq_priv)(struct request_queue *, struct request *);
+ void (*init_icq)(struct io_cq *);
+ void (*exit_icq)(struct io_cq *);
+};
+
#define ELV_NAME_MAX (16)
struct elv_fs_entry {
@@ -94,12 +132,16 @@ struct elevator_type
struct kmem_cache *icq_cache;
/* fields provided by elevator implementation */
- struct elevator_ops ops;
+ union {
+ struct elevator_ops sq;
+ struct elevator_mq_ops mq;
+ } ops;
size_t icq_size; /* see iocontext.h */
size_t icq_align; /* ditto */
struct elv_fs_entry *elevator_attrs;
char elevator_name[ELV_NAME_MAX];
struct module *elevator_owner;
+ bool uses_mq;
/* managed by elevator core */
char icq_cache_name[ELV_NAME_MAX + 5]; /* elvname + "_io_cq" */
@@ -123,6 +165,7 @@ struct elevator_queue
struct kobject kobj;
struct mutex sysfs_lock;
unsigned int registered:1;
+ unsigned int uses_mq:1;
DECLARE_HASHTABLE(hash, ELV_HASH_BITS);
};
@@ -133,12 +176,15 @@ extern void elv_dispatch_sort(struct request_queue *, struct request *);
extern void elv_dispatch_add_tail(struct request_queue *, struct request *);
extern void elv_add_request(struct request_queue *, struct request *, int);
extern void __elv_add_request(struct request_queue *, struct request *, int);
-extern int elv_merge(struct request_queue *, struct request **, struct bio *);
+extern enum elv_merge elv_merge(struct request_queue *, struct request **,
+ struct bio *);
extern void elv_merge_requests(struct request_queue *, struct request *,
struct request *);
-extern void elv_merged_request(struct request_queue *, struct request *, int);
+extern void elv_merged_request(struct request_queue *, struct request *,
+ enum elv_merge);
extern void elv_bio_merged(struct request_queue *q, struct request *,
struct bio *);
+extern bool elv_attempt_insert_merge(struct request_queue *, struct request *);
extern void elv_requeue_request(struct request_queue *, struct request *);
extern struct request *elv_former_request(struct request_queue *, struct request *);
extern struct request *elv_latter_request(struct request_queue *, struct request *);
@@ -185,13 +231,6 @@ extern void elv_rb_del(struct rb_root *, struct request *);
extern struct request *elv_rb_find(struct rb_root *, sector_t);
/*
- * Return values from elevator merger
- */
-#define ELEVATOR_NO_MERGE 0
-#define ELEVATOR_FRONT_MERGE 1
-#define ELEVATOR_BACK_MERGE 2
-
-/*
* Insertion selection
*/
#define ELEVATOR_INSERT_FRONT 1
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2ba0743..c930cbc 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -423,6 +423,7 @@ struct block_device {
int bd_invalidated;
struct gendisk * bd_disk;
struct request_queue * bd_queue;
+ struct backing_dev_info *bd_bdi;
struct list_head bd_list;
/*
* Private data. You must have bd_claim'ed the block_device
@@ -2342,6 +2343,7 @@ extern struct kmem_cache *names_cachep;
#ifdef CONFIG_BLOCK
extern int register_blkdev(unsigned int, const char *);
extern void unregister_blkdev(unsigned int, const char *);
+extern void bdev_unhash_inode(dev_t dev);
extern struct block_device *bdget(dev_t);
extern struct block_device *bdgrab(struct block_device *bdev);
extern void bd_set_size(struct block_device *, loff_t size);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 76f3975..a999d28 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -167,6 +167,13 @@ struct blk_integrity {
};
#endif /* CONFIG_BLK_DEV_INTEGRITY */
+struct disk_devt {
+ atomic_t count;
+ void (*release)(struct disk_devt *disk_devt);
+};
+
+void put_disk_devt(struct disk_devt *disk_devt);
+void get_disk_devt(struct disk_devt *disk_devt);
struct gendisk {
/* major, first_minor and minors are input parameters only,
@@ -176,6 +183,7 @@ struct gendisk {
int first_minor;
int minors; /* maximum number of minors, =1 for
* disks that can't be partitioned. */
+ struct disk_devt *disk_devt;
char disk_name[DISK_NAME_LEN]; /* name of major driver */
char *(*devnode)(struct gendisk *gd, umode_t *mode);
diff --git a/include/linux/ide.h b/include/linux/ide.h
index a633898..2f51c17 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -20,6 +20,7 @@
#include <linux/mutex.h>
/* for request_sense */
#include <linux/cdrom.h>
+#include <scsi/scsi_cmnd.h>
#include <asm/byteorder.h>
#include <asm/io.h>
@@ -39,18 +40,53 @@
struct device;
-/* IDE-specific values for req->cmd_type */
-enum ata_cmd_type_bits {
- REQ_TYPE_ATA_TASKFILE = REQ_TYPE_DRV_PRIV + 1,
- REQ_TYPE_ATA_PC,
- REQ_TYPE_ATA_SENSE, /* sense request */
- REQ_TYPE_ATA_PM_SUSPEND,/* suspend request */
- REQ_TYPE_ATA_PM_RESUME, /* resume request */
+/* values for ide_request.type */
+enum ata_priv_type {
+ ATA_PRIV_MISC,
+ ATA_PRIV_TASKFILE,
+ ATA_PRIV_PC,
+ ATA_PRIV_SENSE, /* sense request */
+ ATA_PRIV_PM_SUSPEND, /* suspend request */
+ ATA_PRIV_PM_RESUME, /* resume request */
};
-#define ata_pm_request(rq) \
- ((rq)->cmd_type == REQ_TYPE_ATA_PM_SUSPEND || \
- (rq)->cmd_type == REQ_TYPE_ATA_PM_RESUME)
+struct ide_request {
+ struct scsi_request sreq;
+ u8 sense[SCSI_SENSE_BUFFERSIZE];
+ u8 type;
+};
+
+static inline struct ide_request *ide_req(struct request *rq)
+{
+ return blk_mq_rq_to_pdu(rq);
+}
+
+static inline bool ata_misc_request(struct request *rq)
+{
+ return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_MISC;
+}
+
+static inline bool ata_taskfile_request(struct request *rq)
+{
+ return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_TASKFILE;
+}
+
+static inline bool ata_pc_request(struct request *rq)
+{
+ return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_PC;
+}
+
+static inline bool ata_sense_request(struct request *rq)
+{
+ return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_SENSE;
+}
+
+static inline bool ata_pm_request(struct request *rq)
+{
+ return blk_rq_is_private(rq) &&
+ (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND ||
+ ide_req(rq)->type == ATA_PRIV_PM_RESUME);
+}
/* Error codes returned in rq->errors to the higher part of the driver. */
enum {
@@ -579,7 +615,7 @@ struct ide_drive_s {
/* current sense rq and buffer */
bool sense_rq_armed;
- struct request sense_rq;
+ struct request *sense_rq;
struct request_sense sense_data;
};
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 7c273bb..ca45e4a 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -80,8 +80,6 @@ struct nvm_dev_ops {
unsigned int max_phys_sect;
};
-
-
#ifdef CONFIG_NVM
#include <linux/blkdev.h>
@@ -109,6 +107,7 @@ enum {
NVM_RSP_ERR_FAILWRITE = 0x40ff,
NVM_RSP_ERR_EMPTYPAGE = 0x42ff,
NVM_RSP_ERR_FAILECC = 0x4281,
+ NVM_RSP_ERR_FAILCRC = 0x4004,
NVM_RSP_WARN_HIGHECC = 0x4700,
/* Device opcodes */
@@ -202,11 +201,10 @@ struct nvm_addr_format {
struct nvm_id {
u8 ver_id;
u8 vmnt;
- u8 cgrps;
u32 cap;
u32 dom;
struct nvm_addr_format ppaf;
- struct nvm_id_group groups[4];
+ struct nvm_id_group grp;
} __packed;
struct nvm_target {
@@ -216,10 +214,6 @@ struct nvm_target {
struct gendisk *disk;
};
-struct nvm_tgt_instance {
- struct nvm_tgt_type *tt;
-};
-
#define ADDR_EMPTY (~0ULL)
#define NVM_VERSION_MAJOR 1
@@ -230,7 +224,6 @@ struct nvm_rq;
typedef void (nvm_end_io_fn)(struct nvm_rq *);
struct nvm_rq {
- struct nvm_tgt_instance *ins;
struct nvm_tgt_dev *dev;
struct bio *bio;
@@ -254,6 +247,8 @@ struct nvm_rq {
u64 ppa_status; /* ppa media status */
int error;
+
+ void *private;
};
static inline struct nvm_rq *nvm_rq_from_pdu(void *pdu)
@@ -272,15 +267,6 @@ enum {
NVM_BLK_ST_BAD = 0x8, /* Bad block */
};
-/* system block cpu representation */
-struct nvm_sb_info {
- unsigned long seqnr;
- unsigned long erase_cnt;
- unsigned int version;
- char mmtype[NVM_MMTYPE_LEN];
- struct ppa_addr fs_ppa;
-};
-
/* Device generic information */
struct nvm_geo {
int nr_chnls;
@@ -308,6 +294,7 @@ struct nvm_geo {
int sec_per_lun;
};
+/* sub-device structure */
struct nvm_tgt_dev {
/* Device information */
struct nvm_geo geo;
@@ -329,17 +316,10 @@ struct nvm_dev {
struct list_head devices;
- /* Media manager */
- struct nvmm_type *mt;
- void *mp;
-
- /* System blocks */
- struct nvm_sb_info sb;
-
/* Device information */
struct nvm_geo geo;
- /* lower page table */
+ /* lower page table */
int lps_per_blk;
int *lptbl;
@@ -359,6 +339,10 @@ struct nvm_dev {
struct mutex mlock;
spinlock_t lock;
+
+ /* target management */
+ struct list_head area_list;
+ struct list_head targets;
};
static inline struct ppa_addr linear_to_generic_addr(struct nvm_geo *geo,
@@ -391,10 +375,10 @@ static inline struct ppa_addr linear_to_generic_addr(struct nvm_geo *geo,
return l;
}
-static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
- struct ppa_addr r)
+static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
+ struct ppa_addr r)
{
- struct nvm_geo *geo = &dev->geo;
+ struct nvm_geo *geo = &tgt_dev->geo;
struct ppa_addr l;
l.ppa = ((u64)r.g.blk) << geo->ppaf.blk_offset;
@@ -407,10 +391,10 @@ static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
return l;
}
-static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
- struct ppa_addr r)
+static inline struct ppa_addr dev_to_generic_addr(struct nvm_tgt_dev *tgt_dev,
+ struct ppa_addr r)
{
- struct nvm_geo *geo = &dev->geo;
+ struct nvm_geo *geo = &tgt_dev->geo;
struct ppa_addr l;
l.ppa = 0;
@@ -452,15 +436,12 @@ static inline int ppa_cmp_blk(struct ppa_addr ppa1, struct ppa_addr ppa2)
(ppa1.g.blk == ppa2.g.blk));
}
-static inline int ppa_to_slc(struct nvm_dev *dev, int slc_pg)
-{
- return dev->lptbl[slc_pg];
-}
-
typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *);
typedef sector_t (nvm_tgt_capacity_fn)(void *);
typedef void *(nvm_tgt_init_fn)(struct nvm_tgt_dev *, struct gendisk *);
typedef void (nvm_tgt_exit_fn)(void *);
+typedef int (nvm_tgt_sysfs_init_fn)(struct gendisk *);
+typedef void (nvm_tgt_sysfs_exit_fn)(struct gendisk *);
struct nvm_tgt_type {
const char *name;
@@ -469,12 +450,15 @@ struct nvm_tgt_type {
/* target entry points */
nvm_tgt_make_rq_fn *make_rq;
nvm_tgt_capacity_fn *capacity;
- nvm_end_io_fn *end_io;
/* module-specific init/teardown */
nvm_tgt_init_fn *init;
nvm_tgt_exit_fn *exit;
+ /* sysfs */
+ nvm_tgt_sysfs_init_fn *sysfs_init;
+ nvm_tgt_sysfs_exit_fn *sysfs_exit;
+
/* For internal use */
struct list_head list;
};
@@ -487,103 +471,29 @@ extern void nvm_unregister_tgt_type(struct nvm_tgt_type *);
extern void *nvm_dev_dma_alloc(struct nvm_dev *, gfp_t, dma_addr_t *);
extern void nvm_dev_dma_free(struct nvm_dev *, void *, dma_addr_t);
-typedef int (nvmm_register_fn)(struct nvm_dev *);
-typedef void (nvmm_unregister_fn)(struct nvm_dev *);
-
-typedef int (nvmm_create_tgt_fn)(struct nvm_dev *, struct nvm_ioctl_create *);
-typedef int (nvmm_remove_tgt_fn)(struct nvm_dev *, struct nvm_ioctl_remove *);
-typedef int (nvmm_submit_io_fn)(struct nvm_tgt_dev *, struct nvm_rq *);
-typedef int (nvmm_erase_blk_fn)(struct nvm_tgt_dev *, struct ppa_addr *, int);
-typedef int (nvmm_get_area_fn)(struct nvm_dev *, sector_t *, sector_t);
-typedef void (nvmm_put_area_fn)(struct nvm_dev *, sector_t);
-typedef struct ppa_addr (nvmm_trans_ppa_fn)(struct nvm_tgt_dev *,
- struct ppa_addr, int);
-typedef void (nvmm_part_to_tgt_fn)(struct nvm_dev *, sector_t*, int);
-
-enum {
- TRANS_TGT_TO_DEV = 0x0,
- TRANS_DEV_TO_TGT = 0x1,
-};
-
-struct nvmm_type {
- const char *name;
- unsigned int version[3];
-
- nvmm_register_fn *register_mgr;
- nvmm_unregister_fn *unregister_mgr;
-
- nvmm_create_tgt_fn *create_tgt;
- nvmm_remove_tgt_fn *remove_tgt;
-
- nvmm_submit_io_fn *submit_io;
- nvmm_erase_blk_fn *erase_blk;
-
- nvmm_get_area_fn *get_area;
- nvmm_put_area_fn *put_area;
-
- nvmm_trans_ppa_fn *trans_ppa;
- nvmm_part_to_tgt_fn *part_to_tgt;
-
- struct list_head list;
-};
-
-extern int nvm_register_mgr(struct nvmm_type *);
-extern void nvm_unregister_mgr(struct nvmm_type *);
-
extern struct nvm_dev *nvm_alloc_dev(int);
extern int nvm_register(struct nvm_dev *);
extern void nvm_unregister(struct nvm_dev *);
-extern int nvm_set_bb_tbl(struct nvm_dev *, struct ppa_addr *, int, int);
extern int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr *,
int, int);
extern int nvm_max_phys_sects(struct nvm_tgt_dev *);
extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *);
-extern void nvm_generic_to_addr_mode(struct nvm_dev *, struct nvm_rq *);
-extern void nvm_addr_to_generic_mode(struct nvm_dev *, struct nvm_rq *);
extern int nvm_set_rqd_ppalist(struct nvm_dev *, struct nvm_rq *,
const struct ppa_addr *, int, int);
extern void nvm_free_rqd_ppalist(struct nvm_dev *, struct nvm_rq *);
-extern int nvm_erase_ppa(struct nvm_dev *, struct ppa_addr *, int, int);
extern int nvm_erase_blk(struct nvm_tgt_dev *, struct ppa_addr *, int);
extern int nvm_get_l2p_tbl(struct nvm_tgt_dev *, u64, u32, nvm_l2p_update_fn *,
void *);
extern int nvm_get_area(struct nvm_tgt_dev *, sector_t *, sector_t);
extern void nvm_put_area(struct nvm_tgt_dev *, sector_t);
-extern void nvm_end_io(struct nvm_rq *, int);
-extern int nvm_submit_ppa(struct nvm_dev *, struct ppa_addr *, int, int, int,
- void *, int);
-extern int nvm_submit_ppa_list(struct nvm_dev *, struct ppa_addr *, int, int,
- int, void *, int);
+extern void nvm_end_io(struct nvm_rq *);
extern int nvm_bb_tbl_fold(struct nvm_dev *, u8 *, int);
-extern int nvm_get_bb_tbl(struct nvm_dev *, struct ppa_addr, u8 *);
extern int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr, u8 *);
-/* sysblk.c */
-#define NVM_SYSBLK_MAGIC 0x4E564D53 /* "NVMS" */
-
-/* system block on disk representation */
-struct nvm_system_block {
- __be32 magic; /* magic signature */
- __be32 seqnr; /* sequence number */
- __be32 erase_cnt; /* erase count */
- __be16 version; /* version number */
- u8 mmtype[NVM_MMTYPE_LEN]; /* media manager name */
- __be64 fs_ppa; /* PPA for media manager
- * superblock */
-};
-
-extern int nvm_get_sysblock(struct nvm_dev *, struct nvm_sb_info *);
-extern int nvm_update_sysblock(struct nvm_dev *, struct nvm_sb_info *);
-extern int nvm_init_sysblock(struct nvm_dev *, struct nvm_sb_info *);
-
extern int nvm_dev_factory(struct nvm_dev *, int flags);
-#define nvm_for_each_lun_ppa(geo, ppa, chid, lunid) \
- for ((chid) = 0, (ppa).ppa = 0; (chid) < (geo)->nr_chnls; \
- (chid)++, (ppa).g.ch = (chid)) \
- for ((lunid) = 0; (lunid) < (geo)->luns_per_chnl; \
- (lunid)++, (ppa).g.lun = (lunid))
+extern void nvm_part_to_tgt(struct nvm_dev *, sector_t *, int);
#else /* CONFIG_NVM */
struct nvm_dev_ops;
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 3d1c6f1..0b676a0 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -244,6 +244,7 @@ enum {
NVME_CTRL_ONCS_DSM = 1 << 2,
NVME_CTRL_ONCS_WRITE_ZEROES = 1 << 3,
NVME_CTRL_VWC_PRESENT = 1 << 0,
+ NVME_CTRL_OACS_SEC_SUPP = 1 << 0,
};
struct nvme_lbaf {
@@ -553,6 +554,8 @@ enum {
NVME_DSMGMT_AD = 1 << 2,
};
+#define NVME_DSM_MAX_RANGES 256
+
struct nvme_dsm_range {
__le32 cattr;
__le32 nlb;
diff --git a/include/linux/sbitmap.h b/include/linux/sbitmap.h
index f017fd6..d4e0a20 100644
--- a/include/linux/sbitmap.h
+++ b/include/linux/sbitmap.h
@@ -259,6 +259,26 @@ static inline int sbitmap_test_bit(struct sbitmap *sb, unsigned int bitnr)
unsigned int sbitmap_weight(const struct sbitmap *sb);
/**
+ * sbitmap_show() - Dump &struct sbitmap information to a &struct seq_file.
+ * @sb: Bitmap to show.
+ * @m: struct seq_file to write to.
+ *
+ * This is intended for debugging. The format may change at any time.
+ */
+void sbitmap_show(struct sbitmap *sb, struct seq_file *m);
+
+/**
+ * sbitmap_bitmap_show() - Write a hex dump of a &struct sbitmap to a &struct
+ * seq_file.
+ * @sb: Bitmap to show.
+ * @m: struct seq_file to write to.
+ *
+ * This is intended for debugging. The output isn't guaranteed to be internally
+ * consistent.
+ */
+void sbitmap_bitmap_show(struct sbitmap *sb, struct seq_file *m);
+
+/**
* sbitmap_queue_init_node() - Initialize a &struct sbitmap_queue on a specific
* memory node.
* @sbq: Bitmap queue to initialize.
@@ -370,4 +390,14 @@ static inline struct sbq_wait_state *sbq_wait_ptr(struct sbitmap_queue *sbq,
*/
void sbitmap_queue_wake_all(struct sbitmap_queue *sbq);
+/**
+ * sbitmap_queue_show() - Dump &struct sbitmap_queue information to a &struct
+ * seq_file.
+ * @sbq: Bitmap queue to show.
+ * @m: struct seq_file to write to.
+ *
+ * This is intended for debugging. The format may change at any time.
+ */
+void sbitmap_queue_show(struct sbitmap_queue *sbq, struct seq_file *m);
+
#endif /* __LINUX_SCALE_BITMAP_H */
diff --git a/include/linux/sed-opal.h b/include/linux/sed-opal.h
new file mode 100644
index 0000000..deee23d
--- /dev/null
+++ b/include/linux/sed-opal.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Authors:
+ * Rafael Antognolli <rafael.antognolli@intel.com>
+ * Scott Bauer <scott.bauer@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef LINUX_OPAL_H
+#define LINUX_OPAL_H
+
+#include <uapi/linux/sed-opal.h>
+#include <linux/kernel.h>
+
+struct opal_dev;
+
+typedef int (sec_send_recv)(void *data, u16 spsp, u8 secp, void *buffer,
+ size_t len, bool send);
+
+#ifdef CONFIG_BLK_SED_OPAL
+bool opal_unlock_from_suspend(struct opal_dev *dev);
+struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
+int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
+
+static inline bool is_sed_ioctl(unsigned int cmd)
+{
+ switch (cmd) {
+ case IOC_OPAL_SAVE:
+ case IOC_OPAL_LOCK_UNLOCK:
+ case IOC_OPAL_TAKE_OWNERSHIP:
+ case IOC_OPAL_ACTIVATE_LSP:
+ case IOC_OPAL_SET_PW:
+ case IOC_OPAL_ACTIVATE_USR:
+ case IOC_OPAL_REVERT_TPR:
+ case IOC_OPAL_LR_SETUP:
+ case IOC_OPAL_ADD_USR_TO_LR:
+ case IOC_OPAL_ENABLE_DISABLE_MBR:
+ case IOC_OPAL_ERASE_LR:
+ case IOC_OPAL_SECURE_ERASE_LR:
+ return true;
+ }
+ return false;
+}
+#else
+static inline bool is_sed_ioctl(unsigned int cmd)
+{
+ return false;
+}
+
+static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
+ void __user *ioctl_ptr)
+{
+ return 0;
+}
+static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
+{
+ return false;
+}
+#define init_opal_dev(data, send_recv) NULL
+#endif /* CONFIG_BLK_SED_OPAL */
+#endif /* LINUX_OPAL_H */
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 9fc1aec..b379f93 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -8,6 +8,7 @@
#include <linux/timer.h>
#include <linux/scatterlist.h>
#include <scsi/scsi_device.h>
+#include <scsi/scsi_request.h>
struct Scsi_Host;
struct scsi_driver;
@@ -57,6 +58,7 @@ struct scsi_pointer {
#define SCMD_TAGGED (1 << 0)
struct scsi_cmnd {
+ struct scsi_request req;
struct scsi_device *device;
struct list_head list; /* scsi_cmnd participates in queue lists */
struct list_head eh_entry; /* entry for the host eh_cmd_q */
@@ -149,7 +151,7 @@ static inline void *scsi_cmd_priv(struct scsi_cmnd *cmd)
return cmd + 1;
}
-/* make sure not to use it with REQ_TYPE_BLOCK_PC commands */
+/* make sure not to use it with passthrough commands */
static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
{
return *(struct scsi_driver **)cmd->request->rq_disk->private_data;
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 36680f1..3cd8c3b 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -551,9 +551,6 @@ struct Scsi_Host {
struct list_head __devices;
struct list_head __targets;
- struct scsi_host_cmd_pool *cmd_pool;
- spinlock_t free_list_lock;
- struct list_head free_list; /* backup store of cmd structs */
struct list_head starved_list;
spinlock_t default_lock;
@@ -826,8 +823,6 @@ extern void scsi_block_requests(struct Scsi_Host *);
struct class_container;
-extern struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost,
- void (*) (struct request_queue *));
/*
* These two functions are used to allocate and free a pseudo device
* which will connect to the host adapter itself rather than any
diff --git a/include/scsi/scsi_request.h b/include/scsi/scsi_request.h
new file mode 100644
index 0000000..ba0aeb9
--- /dev/null
+++ b/include/scsi/scsi_request.h
@@ -0,0 +1,30 @@
+#ifndef _SCSI_SCSI_REQUEST_H
+#define _SCSI_SCSI_REQUEST_H
+
+#include <linux/blk-mq.h>
+
+#define BLK_MAX_CDB 16
+
+struct scsi_request {
+ unsigned char __cmd[BLK_MAX_CDB];
+ unsigned char *cmd;
+ unsigned short cmd_len;
+ unsigned int sense_len;
+ unsigned int resid_len; /* residual count */
+ void *sense;
+};
+
+static inline struct scsi_request *scsi_req(struct request *rq)
+{
+ return blk_mq_rq_to_pdu(rq);
+}
+
+static inline void scsi_req_free_cmd(struct scsi_request *req)
+{
+ if (req->cmd != req->__cmd)
+ kfree(req->cmd);
+}
+
+void scsi_req_init(struct request *);
+
+#endif /* _SCSI_SCSI_REQUEST_H */
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index 8129239..b6e07b5 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -119,4 +119,6 @@ scsi_transport_device_data(struct scsi_device *sdev)
+ shost->transportt->device_private_offset;
}
+void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q);
+
#endif /* SCSI_TRANSPORT_H */
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 3e02e3a..a88ed13 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -73,19 +73,17 @@ DECLARE_EVENT_CLASS(block_rq_with_error,
__field( unsigned int, nr_sector )
__field( int, errors )
__array( char, rwbs, RWBS_LEN )
- __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
+ __dynamic_array( char, cmd, 1 )
),
TP_fast_assign(
__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
- __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
- 0 : blk_rq_pos(rq);
- __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
- 0 : blk_rq_sectors(rq);
+ __entry->sector = blk_rq_trace_sector(rq);
+ __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
__entry->errors = rq->errors;
blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
- blk_dump_cmd(__get_str(cmd), rq);
+ __get_str(cmd)[0] = '\0';
),
TP_printk("%d,%d %s (%s) %llu + %u [%d]",
@@ -153,7 +151,7 @@ TRACE_EVENT(block_rq_complete,
__field( unsigned int, nr_sector )
__field( int, errors )
__array( char, rwbs, RWBS_LEN )
- __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
+ __dynamic_array( char, cmd, 1 )
),
TP_fast_assign(
@@ -163,7 +161,7 @@ TRACE_EVENT(block_rq_complete,
__entry->errors = rq->errors;
blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
- blk_dump_cmd(__get_str(cmd), rq);
+ __get_str(cmd)[0] = '\0';
),
TP_printk("%d,%d %s (%s) %llu + %u [%d]",
@@ -186,20 +184,17 @@ DECLARE_EVENT_CLASS(block_rq,
__field( unsigned int, bytes )
__array( char, rwbs, RWBS_LEN )
__array( char, comm, TASK_COMM_LEN )
- __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
+ __dynamic_array( char, cmd, 1 )
),
TP_fast_assign(
__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
- __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
- 0 : blk_rq_pos(rq);
- __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
- 0 : blk_rq_sectors(rq);
- __entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
- blk_rq_bytes(rq) : 0;
+ __entry->sector = blk_rq_trace_sector(rq);
+ __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
+ __entry->bytes = blk_rq_bytes(rq);
blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
- blk_dump_cmd(__get_str(cmd), rq);
+ __get_str(cmd)[0] = '\0';
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
diff --git a/include/uapi/linux/lightnvm.h b/include/uapi/linux/lightnvm.h
index 774a431..fd19f36 100644
--- a/include/uapi/linux/lightnvm.h
+++ b/include/uapi/linux/lightnvm.h
@@ -122,6 +122,44 @@ struct nvm_ioctl_dev_factory {
__u32 flags;
};
+struct nvm_user_vio {
+ __u8 opcode;
+ __u8 flags;
+ __u16 control;
+ __u16 nppas;
+ __u16 rsvd;
+ __u64 metadata;
+ __u64 addr;
+ __u64 ppa_list;
+ __u32 metadata_len;
+ __u32 data_len;
+ __u64 status;
+ __u32 result;
+ __u32 rsvd3[3];
+};
+
+struct nvm_passthru_vio {
+ __u8 opcode;
+ __u8 flags;
+ __u8 rsvd[2];
+ __u32 nsid;
+ __u32 cdw2;
+ __u32 cdw3;
+ __u64 metadata;
+ __u64 addr;
+ __u32 metadata_len;
+ __u32 data_len;
+ __u64 ppa_list;
+ __u16 nppas;
+ __u16 control;
+ __u32 cdw13;
+ __u32 cdw14;
+ __u32 cdw15;
+ __u64 status;
+ __u32 result;
+ __u32 timeout_ms;
+};
+
/* The ioctl type, 'L', 0x20 - 0x2F documented in ioctl-number.txt */
enum {
/* top level cmds */
@@ -137,6 +175,11 @@ enum {
/* Factory reset device */
NVM_DEV_FACTORY_CMD,
+
+ /* Vector user I/O */
+ NVM_DEV_VIO_ADMIN_CMD = 0x41,
+ NVM_DEV_VIO_CMD = 0x42,
+ NVM_DEV_VIO_USER_CMD = 0x43,
};
#define NVM_IOCTL 'L' /* 0x4c */
@@ -154,6 +197,13 @@ enum {
#define NVM_DEV_FACTORY _IOW(NVM_IOCTL, NVM_DEV_FACTORY_CMD, \
struct nvm_ioctl_dev_factory)
+#define NVME_NVM_IOCTL_IO_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_USER_CMD, \
+ struct nvm_passthru_vio)
+#define NVME_NVM_IOCTL_ADMIN_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_ADMIN_CMD,\
+ struct nvm_passthru_vio)
+#define NVME_NVM_IOCTL_SUBMIT_VIO _IOWR(NVM_IOCTL, NVM_DEV_VIO_CMD,\
+ struct nvm_user_vio)
+
#define NVM_VERSION_MAJOR 1
#define NVM_VERSION_MINOR 0
#define NVM_VERSION_PATCHLEVEL 0
diff --git a/include/uapi/linux/sed-opal.h b/include/uapi/linux/sed-opal.h
new file mode 100644
index 0000000..c72e073
--- /dev/null
+++ b/include/uapi/linux/sed-opal.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Authors:
+ * Rafael Antognolli <rafael.antognolli@intel.com>
+ * Scott Bauer <scott.bauer@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _UAPI_SED_OPAL_H
+#define _UAPI_SED_OPAL_H
+
+#include <linux/types.h>
+
+#define OPAL_KEY_MAX 256
+#define OPAL_MAX_LRS 9
+
+enum opal_mbr {
+ OPAL_MBR_ENABLE = 0x0,
+ OPAL_MBR_DISABLE = 0x01,
+};
+
+enum opal_user {
+ OPAL_ADMIN1 = 0x0,
+ OPAL_USER1 = 0x01,
+ OPAL_USER2 = 0x02,
+ OPAL_USER3 = 0x03,
+ OPAL_USER4 = 0x04,
+ OPAL_USER5 = 0x05,
+ OPAL_USER6 = 0x06,
+ OPAL_USER7 = 0x07,
+ OPAL_USER8 = 0x08,
+ OPAL_USER9 = 0x09,
+};
+
+enum opal_lock_state {
+ OPAL_RO = 0x01, /* 0001 */
+ OPAL_RW = 0x02, /* 0010 */
+ OPAL_LK = 0x04, /* 0100 */
+};
+
+struct opal_key {
+ __u8 lr;
+ __u8 key_len;
+ __u8 __align[6];
+ __u8 key[OPAL_KEY_MAX];
+};
+
+struct opal_lr_act {
+ struct opal_key key;
+ __u32 sum;
+ __u8 num_lrs;
+ __u8 lr[OPAL_MAX_LRS];
+ __u8 align[2]; /* Align to 8 byte boundary */
+};
+
+struct opal_session_info {
+ __u32 sum;
+ __u32 who;
+ struct opal_key opal_key;
+};
+
+struct opal_user_lr_setup {
+ __u64 range_start;
+ __u64 range_length;
+ __u32 RLE; /* Read Lock enabled */
+ __u32 WLE; /* Write Lock Enabled */
+ struct opal_session_info session;
+};
+
+struct opal_lock_unlock {
+ struct opal_session_info session;
+ __u32 l_state;
+ __u8 __align[4];
+};
+
+struct opal_new_pw {
+ struct opal_session_info session;
+
+ /* When we're not operating in sum, and we first set
+ * passwords we need to set them via ADMIN authority.
+ * After passwords are changed, we can set them via,
+ * User authorities.
+ * Because of this restriction we need to know about
+ * Two different users. One in 'session' which we will use
+ * to start the session and new_userr_pw as the user we're
+ * chaning the pw for.
+ */
+ struct opal_session_info new_user_pw;
+};
+
+struct opal_mbr_data {
+ struct opal_key key;
+ __u8 enable_disable;
+ __u8 __align[7];
+};
+
+#define IOC_OPAL_SAVE _IOW('p', 220, struct opal_lock_unlock)
+#define IOC_OPAL_LOCK_UNLOCK _IOW('p', 221, struct opal_lock_unlock)
+#define IOC_OPAL_TAKE_OWNERSHIP _IOW('p', 222, struct opal_key)
+#define IOC_OPAL_ACTIVATE_LSP _IOW('p', 223, struct opal_lr_act)
+#define IOC_OPAL_SET_PW _IOW('p', 224, struct opal_new_pw)
+#define IOC_OPAL_ACTIVATE_USR _IOW('p', 225, struct opal_session_info)
+#define IOC_OPAL_REVERT_TPR _IOW('p', 226, struct opal_key)
+#define IOC_OPAL_LR_SETUP _IOW('p', 227, struct opal_user_lr_setup)
+#define IOC_OPAL_ADD_USR_TO_LR _IOW('p', 228, struct opal_lock_unlock)
+#define IOC_OPAL_ENABLE_DISABLE_MBR _IOW('p', 229, struct opal_mbr_data)
+#define IOC_OPAL_ERASE_LR _IOW('p', 230, struct opal_session_info)
+#define IOC_OPAL_SECURE_ERASE_LR _IOW('p', 231, struct opal_session_info)
+
+#endif /* _UAPI_SED_OPAL_H */
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 95cecbf..b2058a7 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -28,6 +28,8 @@
#include <linux/uaccess.h>
#include <linux/list.h>
+#include "../../block/blk.h"
+
#include <trace/events/block.h>
#include "trace_output.h"
@@ -292,9 +294,6 @@ record_it:
local_irq_restore(flags);
}
-static struct dentry *blk_tree_root;
-static DEFINE_MUTEX(blk_tree_mutex);
-
static void blk_trace_free(struct blk_trace *bt)
{
debugfs_remove(bt->msg_file);
@@ -433,9 +432,9 @@ static void blk_trace_setup_lba(struct blk_trace *bt,
/*
* Setup everything required to start tracing
*/
-int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
- struct block_device *bdev,
- struct blk_user_trace_setup *buts)
+static int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
+ struct block_device *bdev,
+ struct blk_user_trace_setup *buts)
{
struct blk_trace *bt = NULL;
struct dentry *dir = NULL;
@@ -468,22 +467,15 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
ret = -ENOENT;
- mutex_lock(&blk_tree_mutex);
- if (!blk_tree_root) {
- blk_tree_root = debugfs_create_dir("block", NULL);
- if (!blk_tree_root) {
- mutex_unlock(&blk_tree_mutex);
- goto err;
- }
- }
- mutex_unlock(&blk_tree_mutex);
-
- dir = debugfs_create_dir(buts->name, blk_tree_root);
+ if (!blk_debugfs_root)
+ goto err;
+ dir = debugfs_lookup(buts->name, blk_debugfs_root);
+ if (!dir)
+ bt->dir = dir = debugfs_create_dir(buts->name, blk_debugfs_root);
if (!dir)
goto err;
- bt->dir = dir;
bt->dev = dev;
atomic_set(&bt->dropped, 0);
INIT_LIST_HEAD(&bt->running_list);
@@ -525,9 +517,12 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
if (atomic_inc_return(&blk_probes_ref) == 1)
blk_register_tracepoints();
- return 0;
+ ret = 0;
err:
- blk_trace_free(bt);
+ if (dir && !bt->dir)
+ dput(dir);
+ if (ret)
+ blk_trace_free(bt);
return ret;
}
@@ -712,15 +707,13 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
if (likely(!bt))
return;
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
+ if (blk_rq_is_passthrough(rq))
what |= BLK_TC_ACT(BLK_TC_PC);
- __blk_add_trace(bt, 0, nr_bytes, req_op(rq), rq->cmd_flags,
- what, rq->errors, rq->cmd_len, rq->cmd);
- } else {
+ else
what |= BLK_TC_ACT(BLK_TC_FS);
- __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes, req_op(rq),
- rq->cmd_flags, what, rq->errors, 0, NULL);
- }
+
+ __blk_add_trace(bt, blk_rq_trace_sector(rq), nr_bytes, req_op(rq),
+ rq->cmd_flags, what, rq->errors, 0, NULL);
}
static void blk_add_trace_rq_abort(void *ignore,
@@ -972,11 +965,7 @@ void blk_add_driver_data(struct request_queue *q,
if (likely(!bt))
return;
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
- __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0, 0,
- BLK_TA_DRV_DATA, rq->errors, len, data);
- else
- __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0, 0,
+ __blk_add_trace(bt, blk_rq_trace_sector(rq), blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
}
EXPORT_SYMBOL_GPL(blk_add_driver_data);
@@ -1752,31 +1741,6 @@ void blk_trace_remove_sysfs(struct device *dev)
#ifdef CONFIG_EVENT_TRACING
-void blk_dump_cmd(char *buf, struct request *rq)
-{
- int i, end;
- int len = rq->cmd_len;
- unsigned char *cmd = rq->cmd;
-
- if (rq->cmd_type != REQ_TYPE_BLOCK_PC) {
- buf[0] = '\0';
- return;
- }
-
- for (end = len - 1; end >= 0; end--)
- if (cmd[end])
- break;
- end++;
-
- for (i = 0; i < len; i++) {
- buf += sprintf(buf, "%s%02x", i == 0 ? "" : " ", cmd[i]);
- if (i == end && end != len - 1) {
- sprintf(buf, " ..");
- break;
- }
- }
-}
-
void blk_fill_rwbs(char *rwbs, unsigned int op, int bytes)
{
int i = 0;
diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index 2cecf05..55e11c4 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -17,6 +17,7 @@
#include <linux/random.h>
#include <linux/sbitmap.h>
+#include <linux/seq_file.h>
int sbitmap_init_node(struct sbitmap *sb, unsigned int depth, int shift,
gfp_t flags, int node)
@@ -180,6 +181,62 @@ unsigned int sbitmap_weight(const struct sbitmap *sb)
}
EXPORT_SYMBOL_GPL(sbitmap_weight);
+void sbitmap_show(struct sbitmap *sb, struct seq_file *m)
+{
+ seq_printf(m, "depth=%u\n", sb->depth);
+ seq_printf(m, "busy=%u\n", sbitmap_weight(sb));
+ seq_printf(m, "bits_per_word=%u\n", 1U << sb->shift);
+ seq_printf(m, "map_nr=%u\n", sb->map_nr);
+}
+EXPORT_SYMBOL_GPL(sbitmap_show);
+
+static inline void emit_byte(struct seq_file *m, unsigned int offset, u8 byte)
+{
+ if ((offset & 0xf) == 0) {
+ if (offset != 0)
+ seq_putc(m, '\n');
+ seq_printf(m, "%08x:", offset);
+ }
+ if ((offset & 0x1) == 0)
+ seq_putc(m, ' ');
+ seq_printf(m, "%02x", byte);
+}
+
+void sbitmap_bitmap_show(struct sbitmap *sb, struct seq_file *m)
+{
+ u8 byte = 0;
+ unsigned int byte_bits = 0;
+ unsigned int offset = 0;
+ int i;
+
+ for (i = 0; i < sb->map_nr; i++) {
+ unsigned long word = READ_ONCE(sb->map[i].word);
+ unsigned int word_bits = READ_ONCE(sb->map[i].depth);
+
+ while (word_bits > 0) {
+ unsigned int bits = min(8 - byte_bits, word_bits);
+
+ byte |= (word & (BIT(bits) - 1)) << byte_bits;
+ byte_bits += bits;
+ if (byte_bits == 8) {
+ emit_byte(m, offset, byte);
+ byte = 0;
+ byte_bits = 0;
+ offset++;
+ }
+ word >>= bits;
+ word_bits -= bits;
+ }
+ }
+ if (byte_bits) {
+ emit_byte(m, offset, byte);
+ offset++;
+ }
+ if (offset)
+ seq_putc(m, '\n');
+}
+EXPORT_SYMBOL_GPL(sbitmap_bitmap_show);
+
static unsigned int sbq_calc_wake_batch(unsigned int depth)
{
unsigned int wake_batch;
@@ -239,7 +296,19 @@ EXPORT_SYMBOL_GPL(sbitmap_queue_init_node);
void sbitmap_queue_resize(struct sbitmap_queue *sbq, unsigned int depth)
{
- sbq->wake_batch = sbq_calc_wake_batch(depth);
+ unsigned int wake_batch = sbq_calc_wake_batch(depth);
+ int i;
+
+ if (sbq->wake_batch != wake_batch) {
+ WRITE_ONCE(sbq->wake_batch, wake_batch);
+ /*
+ * Pairs with the memory barrier in sbq_wake_up() to ensure that
+ * the batch size is updated before the wait counts.
+ */
+ smp_mb__before_atomic();
+ for (i = 0; i < SBQ_WAIT_QUEUES; i++)
+ atomic_set(&sbq->ws[i].wait_cnt, 1);
+ }
sbitmap_resize(&sbq->sb, depth);
}
EXPORT_SYMBOL_GPL(sbitmap_queue_resize);
@@ -297,20 +366,39 @@ static struct sbq_wait_state *sbq_wake_ptr(struct sbitmap_queue *sbq)
static void sbq_wake_up(struct sbitmap_queue *sbq)
{
struct sbq_wait_state *ws;
+ unsigned int wake_batch;
int wait_cnt;
- /* Ensure that the wait list checks occur after clear_bit(). */
- smp_mb();
+ /*
+ * Pairs with the memory barrier in set_current_state() to ensure the
+ * proper ordering of clear_bit()/waitqueue_active() in the waker and
+ * test_and_set_bit()/prepare_to_wait()/finish_wait() in the waiter. See
+ * the comment on waitqueue_active(). This is __after_atomic because we
+ * just did clear_bit() in the caller.
+ */
+ smp_mb__after_atomic();
ws = sbq_wake_ptr(sbq);
if (!ws)
return;
wait_cnt = atomic_dec_return(&ws->wait_cnt);
- if (unlikely(wait_cnt < 0))
- wait_cnt = atomic_inc_return(&ws->wait_cnt);
- if (wait_cnt == 0) {
- atomic_add(sbq->wake_batch, &ws->wait_cnt);
+ if (wait_cnt <= 0) {
+ wake_batch = READ_ONCE(sbq->wake_batch);
+ /*
+ * Pairs with the memory barrier in sbitmap_queue_resize() to
+ * ensure that we see the batch size update before the wait
+ * count is reset.
+ */
+ smp_mb__before_atomic();
+ /*
+ * If there are concurrent callers to sbq_wake_up(), the last
+ * one to decrement the wait count below zero will bump it back
+ * up. If there is a concurrent resize, the count reset will
+ * either cause the cmpxchg to fail or overwrite after the
+ * cmpxchg.
+ */
+ atomic_cmpxchg(&ws->wait_cnt, wait_cnt, wait_cnt + wake_batch);
sbq_index_atomic_inc(&sbq->wake_index);
wake_up(&ws->wait);
}
@@ -331,7 +419,8 @@ void sbitmap_queue_wake_all(struct sbitmap_queue *sbq)
int i, wake_index;
/*
- * Make sure all changes prior to this are visible from other CPUs.
+ * Pairs with the memory barrier in set_current_state() like in
+ * sbq_wake_up().
*/
smp_mb();
wake_index = atomic_read(&sbq->wake_index);
@@ -345,3 +434,37 @@ void sbitmap_queue_wake_all(struct sbitmap_queue *sbq)
}
}
EXPORT_SYMBOL_GPL(sbitmap_queue_wake_all);
+
+void sbitmap_queue_show(struct sbitmap_queue *sbq, struct seq_file *m)
+{
+ bool first;
+ int i;
+
+ sbitmap_show(&sbq->sb, m);
+
+ seq_puts(m, "alloc_hint={");
+ first = true;
+ for_each_possible_cpu(i) {
+ if (!first)
+ seq_puts(m, ", ");
+ first = false;
+ seq_printf(m, "%u", *per_cpu_ptr(sbq->alloc_hint, i));
+ }
+ seq_puts(m, "}\n");
+
+ seq_printf(m, "wake_batch=%u\n", sbq->wake_batch);
+ seq_printf(m, "wake_index=%d\n", atomic_read(&sbq->wake_index));
+
+ seq_puts(m, "ws={\n");
+ for (i = 0; i < SBQ_WAIT_QUEUES; i++) {
+ struct sbq_wait_state *ws = &sbq->ws[i];
+
+ seq_printf(m, "\t{.wait_cnt=%d, .wait=%s},\n",
+ atomic_read(&ws->wait_cnt),
+ waitqueue_active(&ws->wait) ? "active" : "inactive");
+ }
+ seq_puts(m, "}\n");
+
+ seq_printf(m, "round_robin=%d\n", sbq->round_robin);
+}
+EXPORT_SYMBOL_GPL(sbitmap_queue_show);
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 3bfed5ab..39ce616 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -237,6 +237,7 @@ static __init int bdi_class_init(void)
bdi_class->dev_groups = bdi_dev_groups;
bdi_debug_init();
+
return 0;
}
postcore_initcall(bdi_class_init);
@@ -758,15 +759,20 @@ static int cgwb_bdi_init(struct backing_dev_info *bdi)
if (!bdi->wb_congested)
return -ENOMEM;
+ atomic_set(&bdi->wb_congested->refcnt, 1);
+
err = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL);
if (err) {
- kfree(bdi->wb_congested);
+ wb_congested_put(bdi->wb_congested);
return err;
}
return 0;
}
-static void cgwb_bdi_destroy(struct backing_dev_info *bdi) { }
+static void cgwb_bdi_destroy(struct backing_dev_info *bdi)
+{
+ wb_congested_put(bdi->wb_congested);
+}
#endif /* CONFIG_CGROUP_WRITEBACK */
@@ -776,6 +782,7 @@ int bdi_init(struct backing_dev_info *bdi)
bdi->dev = NULL;
+ kref_init(&bdi->refcnt);
bdi->min_ratio = 0;
bdi->max_ratio = 100;
bdi->max_prop_frac = FPROP_FRAC_BASE;
@@ -791,6 +798,22 @@ int bdi_init(struct backing_dev_info *bdi)
}
EXPORT_SYMBOL(bdi_init);
+struct backing_dev_info *bdi_alloc_node(gfp_t gfp_mask, int node_id)
+{
+ struct backing_dev_info *bdi;
+
+ bdi = kmalloc_node(sizeof(struct backing_dev_info),
+ gfp_mask | __GFP_ZERO, node_id);
+ if (!bdi)
+ return NULL;
+
+ if (bdi_init(bdi)) {
+ kfree(bdi);
+ return NULL;
+ }
+ return bdi;
+}
+
int bdi_register(struct backing_dev_info *bdi, struct device *parent,
const char *fmt, ...)
{
@@ -871,12 +894,26 @@ void bdi_unregister(struct backing_dev_info *bdi)
}
}
-void bdi_exit(struct backing_dev_info *bdi)
+static void bdi_exit(struct backing_dev_info *bdi)
{
WARN_ON_ONCE(bdi->dev);
wb_exit(&bdi->wb);
}
+static void release_bdi(struct kref *ref)
+{
+ struct backing_dev_info *bdi =
+ container_of(ref, struct backing_dev_info, refcnt);
+
+ bdi_exit(bdi);
+ kfree(bdi);
+}
+
+void bdi_put(struct backing_dev_info *bdi)
+{
+ kref_put(&bdi->refcnt, release_bdi);
+}
+
void bdi_destroy(struct backing_dev_info *bdi)
{
bdi_unregister(bdi);
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 290e8b7..2164498 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1988,11 +1988,11 @@ void laptop_mode_timer_fn(unsigned long data)
* We want to write everything out, not just down to the dirty
* threshold
*/
- if (!bdi_has_dirty_io(&q->backing_dev_info))
+ if (!bdi_has_dirty_io(q->backing_dev_info))
return;
rcu_read_lock();
- list_for_each_entry_rcu(wb, &q->backing_dev_info.wb_list, bdi_node)
+ list_for_each_entry_rcu(wb, &q->backing_dev_info->wb_list, bdi_node)
if (wb_has_dirty_io(wb))
wb_start_writeback(wb, nr_pages, true,
WB_REASON_LAPTOP_TIMER);
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