Brian Foster
2032a8a27b
xfs: serialize unaligned dio writes against all other dio writes ...
XFS applies more strict serialization constraints to unaligned
direct writes to accommodate things like direct I/O layer zeroing,
unwritten extent conversion, etc. Unaligned submissions acquire the
exclusive iolock and wait for in-flight dio to complete to ensure
multiple submissions do not race on the same block and cause data
corruption.
This generally works in the case of an aligned dio followed by an
unaligned dio, but the serialization is lost if I/Os occur in the
opposite order. If an unaligned write is submitted first and
immediately followed by an overlapping, aligned write, the latter
submits without the typical unaligned serialization barriers because
there is no indication of an unaligned dio still in-flight. This can
lead to unpredictable results.
To provide proper unaligned dio serialization, require that such
direct writes are always the only dio allowed in-flight at one time
for a particular inode. We already acquire the exclusive iolock and
drain pending dio before submitting the unaligned dio. Wait once
more after the dio submission to hold the iolock across the I/O and
prevent further submissions until the unaligned I/O completes. This
is heavy handed, but consistent with the current pre-submission
serialization for unaligned direct writes.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-03-26 08:37:55 -07:00
Pull request for inlusion in 5.1
2019-03-17 09:10:56 -07:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 14:08:19 -07:00
autofs: clear O_NONBLOCK on the pipe
2019-03-07 18:32:01 -08:00
bfs: extra sanity checking and static inode bitmap
2019-01-04 13:13:47 -08:00
for-5.1-part2-tag
2019-03-12 14:53:57 -07:00
ceph: add mount option to limit caps count
2019-03-05 18:55:17 +01:00
CIFS: fix POSIX lock leak and invalid ptr deref
2019-03-14 19:32:36 -05:00
fscrypt updates for v5.1
2019-03-09 10:54:24 -08:00
Merge 5.0-rc6 into driver-core-next
2019-02-11 09:09:02 +01:00
fs/devpts: always delete dcache dentry-s in dput()
2019-01-24 13:38:30 -05:00
socket: Rename SO_RCVTIMEO/ SO_SNDTIMEO with _OLD suffixes
2019-02-03 11:17:31 -08:00
crypto: clarify name of WEAK_KEY request flag
2019-01-25 18:41:52 +08:00
\n
2019-03-07 09:01:33 -08:00
A large number of bug fixes and cleanups. One new feature to allow
2019-03-12 15:03:21 -07:00
f2fs-for-5.1-rc1
2019-03-15 13:42:53 -07:00
fat: enable .splice_write to support splice on O_DIRECT file
2019-03-07 18:32:01 -08:00
fuse update for 5.1
2019-03-12 14:46:26 -07:00
We've only got three patches ready for this merge window:
2019-03-09 11:52:11 -08:00
hfsplus: return file attributes on statx
2019-01-04 13:13:47 -08:00
hpfs: fix spelling mistake "partion" -> "partition"
2019-03-12 09:58:03 -07:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 14:08:19 -07:00
jbd2: jbd2_get_transaction does not need to return a value
2019-03-01 00:36:57 -05:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 14:08:19 -07:00
NFS: Remove print_overflow_msg()
2019-02-13 11:53:45 -05:00
pNFS: Fix a typo in pnfs_update_layout
2019-03-12 16:04:51 -04:00
Miscellaneous NFS server fixes. Probably the most visible bug is one
2019-03-12 15:06:54 -07:00
XArray: Change xa_insert to return -EBUSY
2019-02-06 13:12:15 -05:00
fanotify: Make waits for fanotify events only killable
2019-02-21 11:47:23 +01:00
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
ocfs2: Use zero-sized array and struct_size() in kzalloc()
2019-03-05 21:07:13 -08:00
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 13:27:20 -07:00
ovl: Do not lose security.capability xattr over metadata file copy-up
2019-02-13 11:14:46 +01:00
pidfd patches for v5.1-rc1
2019-03-16 13:47:14 -07:00
pstore/ram: Avoid needless alloc during header write
2019-02-12 13:45:53 -08:00
quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls.
2018-12-18 18:29:15 +01:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-16 10:31:02 -07:00
This pull request contains updates for both UBI and UBIFS:
2019-03-13 09:34:35 -07:00
udf: Drop pointless check from udf_sync_fs()
2019-02-21 19:25:36 +01:00
xfs: serialize unaligned dio writes against all other dio writes
2019-03-26 08:37:55 -07:00
Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-03-05 14:08:26 -08:00
a.out: remove core dumping support
2019-03-05 10:00:35 -08:00
fs/binfmt_elf.c: spread const a little
2019-03-07 18:32:01 -08:00
exec: load_script: Do not exec truncated interpreter path
2019-02-18 16:49:36 -08:00
block: add bio_set_polled() helper
2019-02-24 08:20:17 -07:00
fs: fix guard_bio_eod to check for real EOD errors
2019-02-28 13:59:41 -07:00
dax: Flush partial PMDs correctly
2019-03-01 17:24:48 -08:00
fs/dcache: Track & report number of negative dentries
2019-01-30 11:02:11 -08:00
block: allow bio_for_each_segment_all() to iterate over multi-page bvec
2019-02-15 08:40:11 -07:00
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
2019-02-01 15:46:24 -08:00
epoll: use rwlock in order to reduce ep_poll_callback() contention
2019-03-07 18:32:01 -08:00
exec: increase BINPRM_BUF_SIZE to 256
2019-03-07 18:32:01 -08:00
io_uring-2019-03-06
2019-03-08 14:48:40 -08:00
fs: add fget_many() and fput_many()
2019-02-28 08:24:23 -07:00
vfs: Implement a filesystem superblock creation/configuration context
2019-02-28 03:29:26 -05:00
writeback: synchronize sync(2) against cgroup writeback membership switches
2019-01-22 14:39:38 -07:00
vfs: Implement logging through fs_context
2019-02-28 03:29:37 -05:00
vfs: Add configuration parser helpers
2019-02-28 03:28:53 -05:00
fs: common implementation of file type
2019-01-21 17:48:13 +01:00
fs/inode.c: inode_set_flags(): replace opencoded set_mask_bits()
2019-03-05 21:07:13 -08:00
vfs: Add configuration parser helpers
2019-02-28 03:28:53 -05:00
mm: refactor readahead defines in mm.h
2019-03-12 10:04:01 -07:00
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
iomap: wire up the iopoll method
2019-02-24 08:20:17 -07:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 14:08:19 -07:00
locking/percpu-rwsem: Remove preempt_disable variants
2019-02-28 07:55:37 +01:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 14:08:19 -07:00
saner handling of temporary namespaces
2019-01-30 17:44:07 -05:00
block: allow bio_for_each_segment_all() to iterate over multi-page bvec
2019-02-15 08:40:11 -07:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 14:08:19 -07:00
Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 14:08:19 -07:00
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 13:27:20 -07:00
separate copying and locking mount tree on cross-userns copies
2019-01-30 17:14:50 -05:00
separate copying and locking mount tree on cross-userns copies
2019-01-30 17:14:50 -05:00
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 13:27:20 -07:00
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
y2038: syscalls: rename y2038 compat syscalls
2019-02-07 00:13:27 +01:00
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 13:27:20 -07:00
fs: move generic stat response attr handling to vfs_getattr_nosec
2019-02-01 01:55:45 -05:00
vfs: add vfs_get_fsid() helper
2019-02-07 16:38:35 +01:00
vfs: Add some logging to the core users of the fs_context log
2019-02-28 03:29:38 -05:00
y2038: syscalls: rename y2038 compat syscalls
2019-02-07 00:13:27 +01:00
userfaultfd: clear flag if remap event not enabled
2018-12-28 12:11:51 -08:00
y2038: syscalls: rename y2038 compat syscalls
2019-02-07 00:13:27 +01:00
2032a8a27b