| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull block IO poll support from Jens Axboe:
"Various groups have been doing experimentation around IO polling for
(really) fast devices. The code has been reviewed and has been
sitting on the side for a few releases, but this is now good enough
for coordinated benchmarking and further experimentation.
Currently O_DIRECT sync read/write are supported. A framework is in
the works that allows scalable stats tracking so we can auto-tune
this. And we'll add libaio support as well soon. Fow now, it's an
opt-in feature for test purposes"
* 'for-4.4/io-poll' of git://git.kernel.dk/linux-block:
direct-io: be sure to assign dio->bio_bdev for both paths
directio: add block polling support
NVMe: add blk polling support
block: add block polling support
blk-mq: return tag/queue combo in the make_request_fn handlers
block: change ->make_request_fn() and users to return a queue cookie
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btrfs sets ->submit_io(), and we failed to set the block dev for
that path. That resulted in a potential NULL dereference when
we later wait for IO in dio_await_one().
Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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This adds support for sync O_DIRECT read/write poll support.
Signed-off-by: Jens Axboe <axboe@fb.com>
[hch: split from a larger patch, minor updates]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
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Pull UBI/UBIFS updates from Richard Weinberger:
- access time support for UBIFS by Dongsheng Yang
- random cleanups and bug fixes all over the place
* tag 'upstream-4.4-rc1' of git://git.infradead.org/linux-ubifs:
ubifs: introduce UBIFS_ATIME_SUPPORT to ubifs
ubifs: make ubifs_[get|set]xattr atomic
UBIFS: Delete unnecessary checks before the function call "iput"
UBI: Remove in vain semicolon
UBI: Fastmap: Fix PEB array type
UBIFS: Fix possible memory leak in ubifs_readdir()
fs/ubifs: remove unnecessary new_valid_dev check
ubi: fastmap: Implement produce_free_peb()
UBIFS: print verbose message when rescanning a corrupted node
UBIFS: call dbg_is_power_cut() instead of reading c->dbg->pc_happened
UBI: drop null test before destroy functions
UBI: Update comments to reflect UBI_METAONLY flag
UBI: Fix debug message
UBI: Fix typo in comment
UBI: Fastmap: Simplify expression
UBIFS: fix a typo in comment of ubifs_budget_req
UBIFS: use kmemdup rather than duplicating its implementation
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To make ubifs support atime flexily, this commit introduces
a Kconfig option named as UBIFS_ATIME_SUPPORT.
With UBIFS_ATIME_SUPPORT=n:
ubifs keeps the full compatibility to no_atime from
the start of ubifs.
=================UBIFS_ATIME_SUPPORT=n=======================
-o - no atime
-o atime - no atime
-o noatime - no atime
-o relatime - no atime
-o strictatime - no atime
-o lazyatime - no atime
With UBIFS_ATIME_SUPPORT=y:
ubifs supports the atime same with other main stream
file systems.
=================UBIFS_ATIME_SUPPORT=y=======================
-o - default behavior (relatime currently)
-o atime - atime support
-o noatime - no atime support
-o relatime - relative atime support
-o strictatime - strict atime support
-o lazyatime - lazy atime support
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
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This commit make the ubifs_[get|set]xattr protected by ui_mutex.
Originally, there is a possibility that ubifs_getxattr to get
a wrong value.
P1 P2
---------- ----------
ubifs_getxattr ubifs_setxattr
- kfree()
- memcpy()
- kmemdup()
Then ubifs_getxattr() would get a non-sense data. To solve this
problem, this commit make the xattr of ubifs_inode updated in
atomic.
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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The iput() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Richard Weinberger <richard@nod.at>
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If ubifs_tnc_next_ent() returns something else than -ENOENT
we leak file->private_data.
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: David Gstir <david@sigma-star.at>
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As currently new_valid_dev always returns 1, so new_valid_dev check is not
needed, remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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This is a trivial fix of showing verbose message when leb-recovery detects
a corrupted node, which is not the last one in the LEB. Rescan expects to
show more detail of the corrupted node.
Reviewed-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Call dbg_is_power_cut() to emulate power cut instead of reading
c->dbg->pc_happened. Otherwise, the function becomes dead code.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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s/now/how
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
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The patch was generated using fixed coccinelle semantic patch
scripts/coccinelle/api/memdup.cocci [1].
[1]: http://permalink.gmane.org/gmane.linux.kernel/2014320
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"Outside of the new ACPI-NFIT hot-add support this pull request is more
notable for what it does not contain, than what it does. There were a
handful of development topics this cycle, dax get_user_pages, dax
fsync, and raw block dax, that need more more iteration and will wait
for 4.5.
The patches to make devm and the pmem driver NUMA aware have been in
-next for several weeks. The hot-add support has not, but is
contained to the NFIT driver and is passing unit tests. The coredump
support is straightforward and was looked over by Jeff. All of it has
received a 0day build success notification across 107 configs.
Summary:
- Add support for the ACPI 6.0 NFIT hot add mechanism to process
updates of the NFIT at runtime.
- Teach the coredump implementation how to filter out DAX mappings.
- Introduce NUMA hints for allocations made by the pmem driver, and
as a side effect all devm allocations now hint their NUMA node by
default"
* tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
coredump: add DAX filtering for FDPIC ELF coredumps
coredump: add DAX filtering for ELF coredumps
acpi: nfit: Add support for hot-add
nfit: in acpi_nfit_init, break on a 0-length table
pmem, memremap: convert to numa aware allocations
devm_memremap_pages: use numa_mem_id
devm: make allocations numa aware by default
devm_memremap: convert to return ERR_PTR
devm_memunmap: use devres_release()
pmem: kill memremap_pmem()
x86, mm: quiet arch_add_memory()
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Add explicit filtering for DAX mappings to FDPIC ELF coredump. This is
useful because DAX mappings have the potential to be very large.
This patch has only been compile tested.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Add two new flags to the existing coredump mechanism for ELF files to
allow us to explicitly filter DAX mappings. This is desirable because
DAX mappings, like hugetlb mappings, have the potential to be very
large.
Update the coredump_filter documentation in
Documentation/filesystems/proc.txt so that it addresses the new DAX
coredump flags. Also update the documented default value of
coredump_filter to be consistent with the core(5) man page. The
documentation being updated talks about bit 4, Dump ELF headers, which
is enabled if CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is turned on in the
kernel config. This kernel config option defaults to "y" if both ELF
binaries and coredump are enabled.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
- New drivers: UniPhier (with and without FIFO)
- some drivers got some bigger rework: ismt, designware, img-scb (rcar
had to be reverted because issues were showing up just lately)
- ACPI: reworked the device scanning and added support for muxes
... and quite a lot of driver bugfixes and cleanups this time. All
files touched outside of the i2c realm have proper acks.
* 'i2c/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (70 commits)
i2c: rcar: Revert the latest refactoring series
i2c: pnx: remove superfluous assignment
MAINTAINERS: i2c: drop i2c-pnx maintainer
MAINTAINERS: i2c: mark also subdirectories as maintained
i2c: cadence: enable driver for ARM64
i2c: i801: Document Intel DNV and Broxton
i2c: at91: manage unexpected RXRDY flag when starting a transfer
i2c: pnx: Use setup_timer instead of open coding it
i2c: add ACPI support for I2C mux ports
acpi: add acpi_preset_companion() stub
i2c: pxa: Add support for pxa910/988 & new configuration features
i2c: au1550: Convert to devm_kzalloc and devm_ioremap_resource
i2c-dev: Fix I2C_SLAVE ioctl comment
i2c-dev: Fix typo in ioctl name reference
i2c: sirf: tune the divider to make i2c bus freq more accurate
i2c: imx: Use -ENXIO as error in the NACK case
i2c: i801: Add support for Intel Broxton
i2c: i801: Add support for Intel DNV
i2c: mediatek: add i2c resume support
i2c: imx: implement bus recovery
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The ioctl is named I2C_RDWR for "I2C read/write". But references to it
were misspelled "rdrw". Fix them.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Merge third patch-bomb from Andrew Morton:
"We're pretty much done over here - I'm still waiting for a nouveau
merge so I can cleanly finish up Christoph's dma-mapping rework.
- bunch of small misc stuff
- fold abs64() into abs(), remove abs64()
- new_valid_dev() cleanups
- binfmt_elf_fdpic feature work"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (24 commits)
fs/binfmt_elf_fdpic.c: provide NOMMU loader for regular ELF binaries
fs/stat.c: remove unnecessary new_valid_dev() check
fs/reiserfs/namei.c: remove unnecessary new_valid_dev() check
fs/nilfs2/namei.c: remove unnecessary new_valid_dev() check
fs/ncpfs/dir.c: remove unnecessary new_valid_dev() check
fs/jfs: remove unnecessary new_valid_dev() checks
fs/hpfs/namei.c: remove unnecessary new_valid_dev() check
fs/f2fs/namei.c: remove unnecessary new_valid_dev() check
fs/ext2/namei.c: remove unnecessary new_valid_dev() check
fs/exofs/namei.c: remove unnecessary new_valid_dev() check
fs/btrfs/inode.c: remove unnecessary new_valid_dev() check
fs/9p: remove unnecessary new_valid_dev() checks
include/linux/kdev_t.h: old/new_valid_dev() can return bool
include/linux/kdev_t.h: remove unused huge_valid_dev()
kmap_atomic_to_page() has no users, remove it
drivers/scsi/cxgbi: fix build with EXTRA_CFLAGS
dma: remove external references to dma_supported
Documentation/sysctl/vm.txt: fix misleading code reference of overcommit_memory
remove abs64()
kernel.h: make abs() work with 64-bit types
...
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The ELF binary loader in binfmt_elf.c requires an MMU, making it
impossible to use regular ELF binaries on NOMMU archs. However, the FDPIC
ELF loader in binfmt_elf_fdpic.c is fully capable as a loader for plain
ELF, which requires constant displacements between LOAD segments, since it
already supports FDPIC ELF files flagged as needing constant displacement.
This patch adjusts the FDPIC ELF loader to accept non-FDPIC ELF files on
NOMMU archs. They are treated identically to FDPIC ELF files with the
constant-displacement flag bit set, except for personality, which must
match the ABI of the program being loaded; the PER_LINUX_FDPIC personality
controls how the kernel interprets function pointers passed to sigaction.
Files that do not set a stack size requirement explicitly are given a
default stack size (matching the amount of committed stack the normal ELF
loader for MMU archs would give them) rather than being rejected; this is
necessary because plain ELF files generally do not declare stack
requirements in theit program headers.
Only ET_DYN (PIE) format ELF files are supported, since loading at a fixed
virtual address is not possible on NOMMU.
This patch was developed and tested on J2 (SH2-compatible) but should
be usable immediately on all archs where binfmt_elf_fdpic is
available. Moreover, by providing dummy definitions of the
elf_check_fdpic() and elf_check_const_displacement() macros for archs
which lack an FDPIC ABI, it should be possible to enable building of
binfmt_elf_fdpic on all other NOMMU archs and thereby give them ELF
binary support, but I have not yet tested this.
The motivation for using binfmt_elf_fdpic.c rather than adapting
binfmt_elf.c to NOMMU is that the former already has all the necessary
code to work properly on NOMMU and has already received widespread
real-world use and testing. I hope this is not controversial.
I'm not really happy with having to unset the FDPIC_FUNCPTRS
personality bit when loading non-FDPIC ELF. This bit should really
reset automatically on execve, since otherwise, executing non-ELF
binaries (e.g. bFLT) from an FDPIC process will leave the personality
in the wrong state and severely break signal handling. But that's a
separate, existing bug and I don't know the right place to fix it.
Signed-off-by: Rich Felker <dalias@libc.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Oleg Endo <oleg.endo@t-online.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Petr Vandrovec <petr@vandrovec.name>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() checks are not
needed. Remove them.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Changman Lee <cm224.lee@samsung.com>
Cc: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jan Kara <jack@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Boaz Harrosh <ooo@electrozaur.com>
Cc: Benny Halevy <bhalevy@primarydata.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Switch everything to the new and more capable implementation of abs().
Mainly to give the new abs() a bit of a workout.
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix kernel-doc warnings in fs/fs-writeback.c by moving a #define macro to
after the function's opening brace. Also #undef this macro at the end of
the function.
../fs/fs-writeback.c:1984: warning: Excess function parameter 'inode' description in 'I_DIRTY_INODE'
../fs/fs-writeback.c:1984: warning: Excess function parameter 'flags' description in 'I_DIRTY_INODE'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix kernel-doc warning in fs/inode.c:
../fs/inode.c:1606: warning: No description found for parameter 'inode'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull NFS client updates from Trond Myklebust:
"Highlights include:
New features:
- RDMA client backchannel from Chuck
- Support for NFSv4.2 file CLONE using the btrfs ioctl
Bugfixes + cleanups:
- Move socket data receive out of the bottom halves and into a
workqueue
- Refactor NFSv4 error handling so synchronous and asynchronous RPC
handles errors identically.
- Fix a panic when blocks or object layouts reads return a bad data
length
- Fix nfsroot so it can handle a 1024 byte long path.
- Fix bad usage of page offset in bl_read_pagelist
- Various NFSv4 callback cleanups+fixes
- Fix GETATTR bitmap verification
- Support hexadecimal number for sunrpc debug sysctl files"
* tag 'nfs-for-4.4-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (53 commits)
Sunrpc: Supports hexadecimal number for sysctl files of sunrpc debug
nfs: Fix GETATTR bitmap verification
nfs: Remove unused xdr page offsets in getacl/setacl arguments
fs/nfs: remove unnecessary new_valid_dev check
SUNRPC: fix variable type
NFS: Enable client side NFSv4.1 backchannel to use other transports
pNFS/flexfiles: Add support for FF_FLAGS_NO_IO_THRU_MDS
pNFS/flexfiles: When mirrored, retry failed reads by switching mirrors
SUNRPC: Remove the TCP-only restriction in bc_svc_process()
svcrdma: Add backward direction service for RPC/RDMA transport
xprtrdma: Handle incoming backward direction RPC calls
xprtrdma: Add support for sending backward direction RPC replies
xprtrdma: Pre-allocate Work Requests for backchannel
xprtrdma: Pre-allocate backward rpc_rqst and send/receive buffers
SUNRPC: Abstract backchannel operations
xprtrdma: Saving IRQs no longer needed for rb_lock
xprtrdma: Remove reply tasklet
xprtrdma: Use workqueue to process RPC/RDMA replies
xprtrdma: Replace send and receive arrays
xprtrdma: Refactor reply handler error handling
...
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When decoding GETATTR replies, the client checks the attribute bitmap
for which attributes the server has sent. It misses bits at the word
boundaries, though; fix that.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The arguments passed around for getacl and setacl xdr encoding, struct
nfs_setaclargs and struct nfs_getaclargs, both contain an array of
pages, an offset into the first page, and the length of the page data.
The offset is unused as it is always zero; remove it.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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As new_valid_dev always returns 1, so !new_valid_dev check is not
needed, remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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NFS: NFSoRDMA Client Side Changes
In addition to a variety of bugfixes, these patches are mostly geared at
enabling both swap and backchannel support to the NFS over RDMA client.
Signed-off-by: Anna Schumake <Anna.Schumaker@Netapp.com>
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Forechannel transports get their own "bc_up" method to create an
endpoint for the backchannel service.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
[Anna Schumaker: Add forward declaration of struct net to xprt.h]
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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For loosely coupled pNFS/flexfiles systems, there is often no advantage
at all in going through the MDS for I/O, since the MDS is subject to
the same limitations as all other clients when talking to DSes. If a
DS is unresponsive, I/O through the MDS will fail.
For such systems, the only scalable solution is to have the pNFS clients
retry doing pNFS, and so the protocol now provides a flag that allows
the pNFS server to signal this.
If LAYOUTGET returns FF_FLAGS_NO_IO_THRU_MDS, then we should assume that
the MDS wants the client to retry using these devices, even if they were
previously marked as being unavailable. To do so, we add a helper,
ff_layout_mark_devices_valid() that will be called from layoutget.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If the pNFS/flexfiles file is mirrored, and a read to one mirror fails,
then we should bump the mirror index, so that we retry to a different
mirror. Once we've iterated through all mirrors and all failed, we can
return the layout and issue a new LAYOUTGET.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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* bugfixes:
NFSv4.1/pnfs: Retry through MDS when getting bad length of data
nfs/blocklayout: Fix bad using of page offset in bl_read_pagelist
NFS: Return directly if encode_sessionid fail
NFS: Fix bad checking of max taglen in callback request
NFS: Fix bad defines of callback response maxsize
NFS: Use NFS4_MAX_SESSIONID_LEN directly for decode/encode sessionid
NFS: Remove unneeded NFS_DEBUG checking before define NFSDBG_FACILITY
NFS: Remove the left function defines in callback.h
NFS: Remove the left global variable nfs_callback_tcpport
NFS: Get rid of the unneeded addr stored in callback arguments
nfsroot: make nfsroot to accept the 1024 bytes long directory name
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If non rpc-based layout driver return bad length of data, nfs retries
by calling rpc_restart_call_prepare() that cause an NULL reference panic.
This patch lets nfs retry through MDS for non rpc-based layout driver
return bad length of data.
[13034.883329] BUG: unable to handle kernel NULL pointer dereference at (null)
[13034.884902] IP: [<ffffffffa00db372>] rpc_restart_call_prepare+0x62/0x90 [sunrpc]
[13034.886558] PGD 0
[13034.888126] Oops: 0000 [#1] KASAN
[13034.889710] Modules linked in: blocklayoutdriver(OE) nfsv4(OE) nfs(OE) fscache(E) nfsd(OE) xfs libcrc32c coretemp btrfs crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel ppdev vmw_balloon auth_rpcgss shpchp nfs_acl lockd vmw_vmci parport_pc xor raid6_pq grace parport sunrpc i2c_piix4 vmwgfx drm_kms_helper ttm drm mptspi e1000 serio_raw scsi_transport_spi mptscsih mptbase ata_generic pata_acpi [last unloaded: fscache]
[13034.898260] CPU: 0 PID: 10112 Comm: kworker/0:1 Tainted: G OE 4.3.0-rc5+ #279
[13034.899932] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[13034.903342] Workqueue: events bl_read_cleanup [blocklayoutdriver]
[13034.905059] task: ffff88006a9148c0 ti: ffff880035e90000 task.ti: ffff880035e90000
[13034.906827] RIP: 0010:[<ffffffffa00db372>] [<ffffffffa00db372>] rpc_restart_call_prepare+0x62/0x90 [sunrpc]
[13034.910522] RSP: 0018:ffff880035e97b58 EFLAGS: 00010282
[13034.912378] RAX: fffffbfff04a5a94 RBX: ffff880068fe4858 RCX: 0000000000000003
[13034.914339] RDX: dffffc0000000000 RSI: 0000000000000003 RDI: 0000000000000282
[13034.916236] RBP: ffff880035e97b68 R08: 0000000000000001 R09: 0000000000000001
[13034.918229] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
[13034.920007] R13: ffff880068fe4858 R14: ffff880068fe4a60 R15: 0000000000001000
[13034.921845] FS: 0000000000000000(0000) GS:ffffffff82247000(0000) knlGS:0000000000000000
[13034.923645] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[13034.925525] CR2: 0000000000000000 CR3: 00000000063dd000 CR4: 00000000001406f0
[13034.932808] Stack:
[13034.934813] ffff880068fe4780 0000000000001000 ffff880035e97ba8 ffffffffa08800d2
[13034.936675] ffffffffa088029d ffff880068fe4780 ffff880068fe4858 ffffffffa089c0a0
[13034.938593] ffff880068fe47e0 ffff88005d59faf0 ffff880035e97be0 ffffffffa087e08f
[13034.940454] Call Trace:
[13034.942388] [<ffffffffa08800d2>] nfs_readpage_result+0x112/0x200 [nfs]
[13034.944317] [<ffffffffa088029d>] ? nfs_readpage_done+0xdd/0x160 [nfs]
[13034.946267] [<ffffffffa087e08f>] nfs_pgio_result+0x9f/0x120 [nfs]
[13034.948166] [<ffffffffa09266cc>] pnfs_ld_read_done+0x7c/0x1e0 [nfsv4]
[13034.950247] [<ffffffffa03b07ee>] bl_read_cleanup+0x2e/0x60 [blocklayoutdriver]
[13034.952156] [<ffffffff810ebf62>] process_one_work+0x412/0x870
[13034.954102] [<ffffffff810ebe84>] ? process_one_work+0x334/0x870
[13034.955949] [<ffffffff810ebb50>] ? queue_delayed_work_on+0x40/0x40
[13034.957985] [<ffffffff810ec441>] worker_thread+0x81/0x6a0
[13034.959817] [<ffffffff810ec3c0>] ? process_one_work+0x870/0x870
[13034.961785] [<ffffffff810f43bd>] kthread+0x17d/0x1a0
[13034.963544] [<ffffffff810f4240>] ? kthread_create_on_node+0x330/0x330
[13034.965479] [<ffffffff81100428>] ? finish_task_switch+0x88/0x220
[13034.967223] [<ffffffff810f4240>] ? kthread_create_on_node+0x330/0x330
[13034.968929] [<ffffffff81b6ae5f>] ret_from_fork+0x3f/0x70
[13034.970534] [<ffffffff810f4240>] ? kthread_create_on_node+0x330/0x330
[13034.972176] Code: c7 43 50 40 84 0d a0 e8 3d fe 1c e1 48 8d 7b 58 c7 83 e4 00 00 00 00 00 00 00 e8 ca fe 1c e1 4c 8b 63 58 4c 89 e7 e8 be fe 1c e1 <49> 83 3c 24 00 74 12 48 c7 43 50 f0 a2 0e a0 b8 01 00 00 00 5b
[13034.977148] RIP [<ffffffffa00db372>] rpc_restart_call_prepare+0x62/0x90 [sunrpc]
[13034.978780] RSP <ffff880035e97b58>
[13034.980399] CR2: 0000000000000000
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Blocklayout uses file offset for the read-back page's offset of first writing,
it's definitely wrong, it writes data to bad address of page that cause userspace
application segment fault. It must be the page base stored in header->args.pgbase.
Also, the pg_offset has no influence with isect and extent length.
Note: The offset of the non-first page is always zero.
Ps: A test program will segment fault at read() as,
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
int main(int argc, char **argv)
{
char buf[2049];
char *filename = NULL;
int fd = -1;
if (argc < 2) {
printf("Usage: %s filename\n", argv[0]);
return 0;
}
filename = argv[1];
fd = open(filename, O_RDONLY | O_DIRECT);
if (fd < 0) {
printf("Open %s fail: %m\n", filename);
return 1;
}
lseek(fd, 2048, SEEK_SET);
if (read(fd, buf, sizeof(buf) - 1) != (sizeof(buf) - 1))
printf("Read 4096 bityes data from %s fail: %m\n", filename);
out:
close(fd);
return 0;
}
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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encode_sessionid() may return error, nfs needs process the return value.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The taglen should be checked with CB_OP_TAGLEN_MAXSZ directly.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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As CB_OP_TAGLEN_MAXSZ, all XXX_MAXSZ should be defined as bit.
Each operation should not cantains CB_OP_TAGLEN_MAXSZ.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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It's no need to define a temporary variables for NFS4_MAX_SESSIONID_LEN.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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It's not needed to checking NFS_DEBUG before define NFSDBG_FACILITY, remove it.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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