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Dave Chinner 4df0f7f145 xfs: fix transaction allocation deadlock in IO path 
xfs_trans_alloc() does GFP_KERNEL allocation, and we can call it
while holding pages locked for writeback in the ->writepages path.
The memory allocation is allowed to wait on pages under writeback,
and so can wait on pages that are tagged as writeback by the
caller.

This affects both pre-IO submission and post-IO submission paths.
Hence xfs_setsize_trans_alloc(), xfs_reflink_end_cow(),
xfs_iomap_write_unwritten() and xfs_reflink_cancel_cow_range().
xfs_iomap_write_unwritten() already does the right thing, but the
others don't. Fix them.

Signed-Off-By: Dave Chinner <dchinner@redhat.com>
Fixes: 281627df3eb5 ("xfs: log file size updates at I/O completion time")
Fixes: 43caeb187deb9 ("xfs: move mappings from cow fork to data fork after copy-write)"
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-03-11 20:27:55 -07:00
..
9p
fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at
2018-01-01 12:45:37 -07:00
adfs
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
affs
iversion: Rename make inode_cmp_iversion{+raw} to inode_eq_iversion{+raw}
2018-02-01 08:15:25 -05:00
afs
afs: Support the AFS dynamic root
2018-02-06 14:43:37 +00:00
autofs4
Merge branch 'userns-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-01-30 14:43:12 -08:00
befs
befs: Define usercopy region in befs_inode_cache slab cache
2018-01-15 12:07:54 -08:00
bfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
btrfs
for-4.16-rc3-tag
2018-03-04 11:04:27 -08:00
cachefiles
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
ceph
ceph: fix potential memory leak in init_caches()
2018-03-01 16:39:47 +01:00
cifs
Add missing structs and defines from recent SMB3.1.1 documentation
2018-02-07 09:36:46 -06:00
coda
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
configfs
configfs: make ci_type field, some pointers and function arguments const
2017-10-19 16:15:16 +02:00
cramfs
cramfs: better MTD dependency expression
2018-02-08 11:37:31 -08:00
crypto
fscrypt: fix build with pre-4.6 gcc versions
2018-02-01 10:51:18 -05:00
debugfs
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
devpts
devpts: fix error handling in devpts_mntget()
2018-01-31 08:48:37 -08:00
dlm
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
ecryptfs
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
efivarfs
efivarfs: Limit the rate for non-root to read files
2018-02-22 10:21:02 -08:00
efs
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
exofs
iversion.h related cleanup for v4.16
2018-02-07 14:25:22 -08:00
exportfs
Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-03-03 11:38:56 -08:00
ext2
iversion.h related cleanup for v4.16
2018-02-07 14:25:22 -08:00
ext4
iversion.h related cleanup for v4.16
2018-02-07 14:25:22 -08:00
f2fs
Refactor support for encrypted symlinks to move common code to fscrypt.
2018-02-04 10:43:12 -08:00
fat
iversion: Rename make inode_cmp_iversion{+raw} to inode_eq_iversion{+raw}
2018-02-01 08:15:25 -05:00
freevxfs
vxfs: Define usercopy region in vxfs_inode slab cache
2018-01-15 12:07:57 -08:00
fscache
AFS development
2017-11-16 11:41:22 -08:00
fuse
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
gfs2
gfs2: Fixes to "Implement iomap for block_map" (2)
2018-03-07 11:40:38 -07:00
hfs
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
hfsplus
hfsplus: honor setgid flag on directories
2018-02-06 18:32:45 -08:00
hostfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hpfs
hpfs: don't bother with the i_version counter or f_version
2017-12-10 12:58:18 -08:00
hugetlbfs
hugetlb: implement memfd sealing
2018-01-31 17:18:39 -08:00
isofs
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
jbd2
jbd2: fix sphinx kernel-doc build warnings
2018-01-10 00:27:29 -05:00
jffs2
Documentation updates for 4.16. New stuff includes refcount_t
2018-01-31 19:25:25 -08:00
jfs
Currently, hardened usercopy performs dynamic bounds checking on slab
2018-02-03 16:25:42 -08:00
kernfs
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
lockd
lockd: Fix server refcounting
2018-01-24 17:33:57 -05:00
minix
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
nfs
NFS: make struct nlmclnt_fl_close_lock_ops static
2018-02-22 12:23:01 -05:00
nfs_common
lockd: fix "list_add double add" caused by legacy signal interface
2017-11-27 16:45:11 -05:00
nfsd
This request is late, apologies.
2018-02-08 15:18:32 -08:00
nilfs2
nilfs2: use time64_t internally
2018-02-06 18:32:45 -08:00
nls
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
notify
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
ntfs
ntfs: remove i_version handling
2018-01-01 10:09:33 -05:00
ocfs2
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
omfs
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
openpromfs
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
orangefs
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
overlayfs
ovl: update Kconfig texts
2018-03-07 11:47:15 +01:00
proc
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-02-14 17:31:51 -08:00
pstore
fs: pstore: remove unused hardirq.h
2017-11-28 16:39:09 -08:00
qnx4
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
qnx6
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
quota
quota: Check for register_shrinker() failure.
2017-11-29 16:46:48 +01:00
ramfs
mm: make pagevec_lookup() update index
2017-09-06 17:27:26 -07:00
reiserfs
fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at
2018-01-01 12:45:37 -07:00
romfs
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
squashfs
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
sysfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
2018-02-01 13:36:15 -08:00
sysv
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
tracefs
VFS: Don't use save/replace_mount_options if not using generic_show_options
2017-07-06 03:31:46 -04:00
ubifs
Refactor support for encrypted symlinks to move common code to fscrypt.
2018-02-04 10:43:12 -08:00
udf
udf: Sanitize nanoseconds for time stamps
2017-12-19 08:11:01 +01:00
ufs
iversion.h related cleanup for v4.16
2018-02-07 14:25:22 -08:00
xfs
xfs: fix transaction allocation deadlock in IO path
2018-03-11 20:27:55 -07:00
aio.c
Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-11-17 11:54:55 -08:00
anon_inodes.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
attr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bad_inode.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
binfmt_aout.c
fs: fix kernel_read prototype
2017-09-04 19:05:15 -04:00
binfmt_elf_fdpic.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-11-17 12:54:01 -08:00
binfmt_elf.c
elf: fix NT_FILE integer overflow
2018-02-06 18:32:45 -08:00
binfmt_em86.c
…
binfmt_flat.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
binfmt_misc.c
fs/binfmt_misc.c: node could be NULL when evicting inode
2017-10-13 16:18:33 -07:00
binfmt_script.c
exec: load_script: kill the onstack interp[BINPRM_BUF_SIZE] array
2017-10-03 17:54:25 -07:00
block_dev.c
blockdev: Avoid two active bdev inodes for one device
2018-02-26 09:48:42 -07:00
buffer.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-01-31 09:25:20 -08:00
char_dev.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_binfmt_elf.c
fs/binfmt: Convert obsolete cputime type to nsecs
2017-02-01 09:13:51 +01:00
compat_ioctl.c
fs: compat_ioctl: add new DVB demux ioctls
2017-12-28 11:17:29 -05:00
compat.c
fs/compat.c: trim unused includes
2017-04-17 12:52:27 -04:00
coredump.c
Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-11-17 11:54:55 -08:00
dax.c
Only miscellaneous cleanups and bug fixes for ext4 this cycle.
2018-02-03 13:49:22 -08:00
dcache.c
Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-02-05 13:05:20 -08:00
dcookies.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
direct-io.c
direct-io: Fix sleep in atomic due to sync AIO
2018-02-26 09:05:35 -07:00
drop_caches.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
eventfd.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
eventpoll.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
exec.c
exec: Weaken dumpability for secureexec
2018-01-03 10:13:36 -08:00
fcntl.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
fhandle.c
vfs: Copy struct mount.mnt_id to userspace using put_user()
2018-01-15 12:07:51 -08:00
file_table.c
vfs: remove unused hardirq.h
2017-12-07 14:23:30 -05:00
file.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-01-31 09:25:20 -08:00
filesystems.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fs_pin.c
Merge branch 'linus' into locking/core, to resolve conflicts
2017-11-07 10:32:44 +01:00
fs_struct.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>
2017-03-02 08:42:35 +01:00
fs-writeback.c
writeback: update comment in inode_io_list_move_locked
2018-01-06 09:18:00 -07:00
inode.c
fs: don't clear I_DIRTY_TIME before calling mark_inode_dirty_sync
2018-03-11 20:27:55 -07:00
internal.h
fs: expose do_unlinkat for built-in callers
2017-11-10 08:48:46 -05:00
ioctl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
iomap.c
iomap: warn on zero-length mappings
2018-01-29 07:27:24 -08:00
Kconfig
libnvdimm for 4.16
2018-02-06 10:41:33 -08:00
Kconfig.binfmt
ARM: enable elf_fdpic on systems with an MMU
2017-09-10 19:31:46 -04:00
libfs.c
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
locks.c
This request is late, apologies.
2018-02-08 15:18:32 -08:00
Makefile
ncpfs: move net/ncpfs to drivers/staging/ncpfs
2017-11-28 13:55:01 +01:00
mbcache.c
mbcache: make sure c_entry_count is not decremented past zero
2018-01-09 23:57:52 -05:00
mount.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mpage.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
namei.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-01-31 09:25:20 -08:00
namespace.c
VFS: Handle lazytime in do_mount()
2017-12-09 20:16:33 -05:00
no-block.c
…
nsfs.c
nsfs: generalize ns_get_path() for path resolution with a task
2017-12-31 16:12:23 +01:00
open.c
ovl: don't allow writing ioctl on lower layer
2017-09-05 12:53:12 +02:00
pipe.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
pnode.c
mnt: Make propagate_umount less slow for overlapping mount propagation trees
2017-05-23 08:41:17 -05:00
pnode.h
mnt: Tuck mounts under others instead of creating shadow/side mounts.
2017-02-04 00:01:06 +13:00
posix_acl.c
posix_acl: convert posix_acl.a_refcount from atomic_t to refcount_t
2018-01-02 19:27:28 -08:00
proc_namespace.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
read_write.c
Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-11-17 12:08:18 -08:00
readdir.c
Merge branch 'linus' into locking/core, to resolve conflicts
2017-11-07 10:32:44 +01:00
select.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
seq_file.c
seq_file: fix incomplete reset on read from zero offset
2018-01-20 02:31:15 -05:00
signalfd.c
fs/signalfd: fix build error for BUS_MCEERR_AR
2018-02-22 15:00:07 -06:00
splice.c
locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()
2017-10-25 11:01:08 +02:00
stack.c
…
stat.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
statfs.c
Rename superblock flags (MS_xyz -> SB_xyz)
2017-11-27 13:05:09 -08:00
super.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-01-31 09:25:20 -08:00
sync.c
fs: don't clear I_DIRTY_TIME before calling mark_inode_dirty_sync
2018-03-11 20:27:55 -07:00
timerfd.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
userfaultfd.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
utimes.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xattr.c
lsm: fix smack_inode_removexattr and xattr_getsecurity memleak
2017-10-04 18:03:15 +11:00