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Ritesh Harjani 52f192660a ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT 
[ Upstream commit f629afe336 ]

Apparently our current rwsem code doesn't like doing the trylock, then
lock for real scheme.  So change our dax read/write methods to just do the
trylock for the RWF_NOWAIT case.
This seems to fix AIM7 regression in some scalable filesystems upto ~25%
in some cases. Claimed in commit 942491c9e6 ("xfs: fix AIM7 regression")

Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Matthew Bobrowski <mbobrowski@mbobrowski.org>
Tested-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20191212055557.11151-2-riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-28 16:35:55 +01:00
..
9p
9p: avoid attaching writeback_fid on mmap with type PRIVATE
2019-10-11 18:18:38 +02:00
adfs
fs/adfs: super: fix use-after-free bug
2019-08-06 19:05:21 +02:00
affs
affs: fix a memory leak in affs_remount
2020-01-27 14:46:52 +01:00
afs
afs: Fix large file support
2020-01-27 14:46:51 +01:00
autofs4
autofs: fix a leak in autofs_expire_indirect()
2019-12-17 20:37:24 +01:00
befs
…
bfs
…
btrfs
btrfs: log message when rw remount is attempted with unclean tree-log
2020-02-28 16:35:53 +01:00
cachefiles
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ceph
ceph: return -EINVAL if given fsc mount option on kernel w/o support
2019-12-05 15:37:06 +01:00
cifs
cifs: fail i/o on soft mounts if sessionsetup errors out
2020-02-14 16:32:20 -05:00
coda
coda: add error handling for fget
2019-08-06 19:05:23 +02:00
configfs
configfs: fix a deadlock in configfs_symlink()
2019-11-12 19:18:18 +01:00
cramfs
…
crypto
fscrypt: clean up some BUG_ON()s in block encryption/decryption
2019-07-31 07:28:22 +02:00
debugfs
debugfs: fix use-after-free on symlink traversal
2019-05-08 07:20:49 +02:00
devpts
fs/devpts: always delete dcache dentry-s in dput()
2019-03-23 14:35:21 +01:00
dlm
dlm: fix invalid cluster name warning
2019-12-17 20:38:33 +01:00
ecryptfs
ecryptfs: fix a memory leak bug in ecryptfs_init_messaging()
2020-02-28 16:35:51 +01:00
efivarfs
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efs
…
exofs
exofs_mount(): fix leaks on failure exits
2019-12-05 15:37:28 +01:00
exportfs
exportfs: fix 'passing zero to ERR_PTR()' warning
2020-01-27 14:46:06 +01:00
ext2
ext2: Adjust indentation in ext2_fill_super
2020-02-14 16:32:17 -05:00
ext4
ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT
2020-02-28 16:35:55 +01:00
f2fs
f2fs: code cleanup for f2fs_statfs_project()
2020-02-14 16:32:12 -05:00
fat
fat: work around race with userspace's read via blockdev while mounting
2019-10-07 18:55:12 +02:00
freevxfs
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fscache
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fuse
fuse: verify attributes
2019-12-17 20:38:44 +01:00
gfs2
gfs2: fix glock reference problem in gfs2_trans_remove_revoke
2019-12-17 20:40:01 +01:00
hfs
fs/hfs/extent.c: fix array out of bounds read of array extent
2019-12-01 09:13:57 +01:00
hfsplus
hfsplus: update timestamps on truncate()
2019-12-01 09:13:56 +01:00
hostfs
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hpfs
…
hugetlbfs
hugetlb: use same fault hash key for shared and private mappings
2019-05-31 06:47:12 -07:00
isofs
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jbd2
jbd2: do not clear the BH_Mapped flag when forgetting a metadata buffer
2020-02-28 16:35:54 +01:00
jffs2
jffs2: fix use-after-free on symlink traversal
2019-05-08 07:20:49 +02:00
jfs
jfs: fix bogus variable self-initialization
2020-01-27 14:46:26 +01:00
kernfs
kernfs: fix ino wrap-around detection
2019-12-17 20:38:50 +01:00
lockd
lockd: fix decoding of TEST results
2019-12-17 20:38:15 +01:00
minix
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ncpfs
…
nfs
NFSv4: try lease recovery on NFS4ERR_EXPIRED
2020-02-14 16:32:21 -05:00
nfs_common
…
nfsd
nfsd: fix jiffies/time_t mixup in LRU list
2020-02-14 16:32:17 -05:00
nilfs2
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nls
…
notify
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
ntfs
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ocfs2
ocfs2: call journal flush to mark journal as empty after journal recovery when mount
2020-01-17 19:45:55 +01:00
omfs
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openpromfs
…
orangefs
orangefs: rate limit the client not running info message
2019-11-24 08:23:30 +01:00
overlayfs
ovl: relax WARN_ON() on rename to self
2019-12-17 20:39:21 +01:00
proc
proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()
2019-11-24 08:23:23 +01:00
pstore
pstore/ram: Write new dumps to start of recycled zones
2020-01-09 10:17:55 +01:00
qnx4
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qnx6
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quota
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
ramfs
…
reiserfs
reiserfs: Fix memory leak of journal device string
2020-02-05 14:18:14 +00:00
romfs
…
squashfs
…
sysfs
…
sysv
…
tracefs
…
ubifs
ubifs: don't trigger assertion on invalid no-key filename
2020-02-14 16:32:11 -05:00
udf
udf: Fix incorrect final NOT_ALLOCATED (hole) extent length
2019-07-21 09:04:30 +02:00
ufs
ufs: fix braino in ufs_get_inode_gid() for solaris UFS flavour
2019-05-25 18:25:36 +02:00
xfs
xfs: Sanity check flags of Q_XQUOTARM call
2020-01-27 14:46:02 +01:00
aio.c
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anon_inodes.c
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attr.c
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bad_inode.c
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binfmt_aout.c
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binfmt_elf_fdpic.c
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binfmt_elf.c
binfmt_elf: Do not move brk for INTERP-less ET_EXEC
2019-10-05 12:48:06 +02:00
binfmt_em86.c
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binfmt_flat.c
fs/binfmt_flat.c: make load_flat_shared_library() work
2019-07-03 13:15:59 +02:00
binfmt_misc.c
…
binfmt_script.c
exec: load_script: Do not exec truncated interpreter path
2019-11-06 12:42:59 +01:00
block_dev.c
block: fix the return errno for direct IO
2019-04-17 08:37:53 +02:00
buffer.c
fs: fix guard_bio_eod to check for real EOD errors
2019-04-05 22:31:28 +02:00
char_dev.c
chardev: Avoid potential use-after-free in 'chrdev_open()'
2020-01-14 20:05:39 +01:00
compat_binfmt_elf.c
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compat_ioctl.c
fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP
2020-01-09 10:17:58 +01:00
compat.c
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coredump.c
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dax.c
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dcache.c
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dcookies.c
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direct-io.c
iomap: report collisions between directio and buffered writes to userspace
2019-04-27 09:35:41 +02:00
drop_caches.c
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
eventfd.c
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eventpoll.c
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exec.c
exit/exec: Seperate mm_release()
2019-12-05 15:38:25 +01:00
fcntl.c
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fhandle.c
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file_table.c
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file.c
fs/file.c: initialize init_files.resize_wait
2019-04-05 22:31:28 +02:00
filesystems.c
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fs_pin.c
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fs_struct.c
…
fs-writeback.c
cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead
2019-11-12 19:18:47 +01:00
inode.c
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
internal.h
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ioctl.c
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iomap.c
iomap: Fix pipe page leakage during splicing
2019-12-17 20:38:57 +01:00
Kconfig
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Kconfig.binfmt
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libfs.c
Fix the locking in dcache_readdir() and friends
2019-10-17 13:43:52 -07:00
locks.c
locks: print unsigned ino in /proc/locks
2020-01-09 10:17:55 +01:00
Makefile
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mbcache.c
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mount.h
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mpage.c
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namei.c
vfs: fix do_last() regression
2020-02-05 14:18:10 +00:00
namespace.c
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no-block.c
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nsfs.c
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open.c
access: avoid the RCU grace period for the temporary subjective credentials
2019-07-31 07:28:58 +02:00
pipe.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
pnode.c
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pnode.h
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posix_acl.c
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proc_namespace.c
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read_write.c
vfs: avoid problematic remapping requests into partial EOF block
2019-12-01 09:13:51 +01:00
readdir.c
filldir[64]: remove WARN_ON_ONCE() for bad directory entries
2020-01-04 14:00:04 +01:00
select.c
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seq_file.c
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signalfd.c
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splice.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
stack.c
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stat.c
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statfs.c
vfs: Fix EOVERFLOW testing in put_compat_statfs64
2019-10-11 18:18:48 +02:00
super.c
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sync.c
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timerfd.c
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userfaultfd.c
userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK
2020-01-04 13:59:58 +01:00
utimes.c
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xattr.c
…