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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-11 10:52:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-11 11:10:35 -0700
commitc9059598ea8981d02356eead3188bf7fa4d717b8 (patch)
tree03e73b20a30e988da7c6a3e0ad93b2dc5843274d /drivers/mtd
parent0a33f80a8373eca7f4bea3961d1346c3815fa5ed (diff)
parentb0fd271d5fba0b2d00888363f3869e3f9b26caa9 (diff)
downloadop-kernel-dev-c9059598ea8981d02356eead3188bf7fa4d717b8.zip
op-kernel-dev-c9059598ea8981d02356eead3188bf7fa4d717b8.tar.gz
Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block: (153 commits) block: add request clone interface (v2) floppy: fix hibernation ramdisk: remove long-deprecated "ramdisk=" boot-time parameter fs/bio.c: add missing __user annotation block: prevent possible io_context->refcount overflow Add serial number support for virtio_blk, V4a block: Add missing bounce_pfn stacking and fix comments Revert "block: Fix bounce limit setting in DM" cciss: decode unit attention in SCSI error handling code cciss: Remove no longer needed sendcmd reject processing code cciss: change SCSI error handling routines to work with interrupts enabled. cciss: separate error processing and command retrying code in sendcmd_withirq_core() cciss: factor out fix target status processing code from sendcmd functions cciss: simplify interface of sendcmd() and sendcmd_withirq() cciss: factor out core of sendcmd_withirq() for use by SCSI error handling code cciss: Use schedule_timeout_uninterruptible in SCSI error handling code block: needs to set the residual length of a bidi request Revert "block: implement blkdev_readpages" block: Fix bounce limit setting in DM Removed reference to non-existing file Documentation/PCI/PCI-DMA-mapping.txt ... Manually fix conflicts with tracing updates in: block/blk-sysfs.c drivers/ide/ide-atapi.c drivers/ide/ide-cd.c drivers/ide/ide-floppy.c drivers/ide/ide-tape.c include/trace/events/block.h kernel/trace/blktrace.c
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/mtd_blkdevs.c43
1 files changed, 24 insertions, 19 deletions
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index a49a9c8..aaac3b6 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -47,40 +47,41 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
unsigned long block, nsect;
char *buf;
- block = req->sector << 9 >> tr->blkshift;
- nsect = req->current_nr_sectors << 9 >> tr->blkshift;
+ block = blk_rq_pos(req) << 9 >> tr->blkshift;
+ nsect = blk_rq_cur_bytes(req) >> tr->blkshift;
buf = req->buffer;
if (req->cmd_type == REQ_TYPE_LINUX_BLOCK &&
req->cmd[0] == REQ_LB_OP_DISCARD)
- return !tr->discard(dev, block, nsect);
+ return tr->discard(dev, block, nsect);
if (!blk_fs_request(req))
- return 0;
+ return -EIO;
- if (req->sector + req->current_nr_sectors > get_capacity(req->rq_disk))
- return 0;
+ if (blk_rq_pos(req) + blk_rq_cur_sectors(req) >
+ get_capacity(req->rq_disk))
+ return -EIO;
switch(rq_data_dir(req)) {
case READ:
for (; nsect > 0; nsect--, block++, buf += tr->blksize)
if (tr->readsect(dev, block, buf))
- return 0;
- return 1;
+ return -EIO;
+ return 0;
case WRITE:
if (!tr->writesect)
- return 0;
+ return -EIO;
for (; nsect > 0; nsect--, block++, buf += tr->blksize)
if (tr->writesect(dev, block, buf))
- return 0;
- return 1;
+ return -EIO;
+ return 0;
default:
printk(KERN_NOTICE "Unknown request %u\n", rq_data_dir(req));
- return 0;
+ return -EIO;
}
}
@@ -88,19 +89,18 @@ static int mtd_blktrans_thread(void *arg)
{
struct mtd_blktrans_ops *tr = arg;
struct request_queue *rq = tr->blkcore_priv->rq;
+ struct request *req = NULL;
/* we might get involved when memory gets low, so use PF_MEMALLOC */
current->flags |= PF_MEMALLOC;
spin_lock_irq(rq->queue_lock);
+
while (!kthread_should_stop()) {
- struct request *req;
struct mtd_blktrans_dev *dev;
- int res = 0;
-
- req = elv_next_request(rq);
+ int res;
- if (!req) {
+ if (!req && !(req = blk_fetch_request(rq))) {
set_current_state(TASK_INTERRUPTIBLE);
spin_unlock_irq(rq->queue_lock);
schedule();
@@ -119,8 +119,13 @@ static int mtd_blktrans_thread(void *arg)
spin_lock_irq(rq->queue_lock);
- end_request(req, res);
+ if (!__blk_end_request_cur(req, res))
+ req = NULL;
}
+
+ if (req)
+ __blk_end_request_all(req, -EIO);
+
spin_unlock_irq(rq->queue_lock);
return 0;
@@ -373,7 +378,7 @@ int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
}
tr->blkcore_priv->rq->queuedata = tr;
- blk_queue_hardsect_size(tr->blkcore_priv->rq, tr->blksize);
+ blk_queue_logical_block_size(tr->blkcore_priv->rq, tr->blksize);
if (tr->discard)
blk_queue_set_discard(tr->blkcore_priv->rq,
blktrans_discard_request);
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