Matthew Bobrowski 3eaf9cc62f ext4: update ext4_sync_file() to not use __generic_file_fsync() ... When the filesystem is created without a journal, we eventually call into __generic_file_fsync() in order to write out all the modified in-core data to the permanent storage device. This function happens to try and obtain an inode_lock() while synchronizing the files buffer and it's associated metadata. Generally, this is fine, however it becomes a problem when there is higher level code that has already obtained an inode_lock() as this leads to a recursive lock situation. This case is especially true when porting across direct I/O to iomap infrastructure as we obtain an inode_lock() early on in the I/O within ext4_dio_write_iter() and hold it until the I/O has been completed. Consequently, to not run into this specific issue, we move away from calling into __generic_file_fsync() and perform the necessary synchronization tasks within ext4_sync_file(). Signed-off-by: Matthew Bobrowski <mbobrowski@mbobrowski.org> Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/3495f35ef67f2021b567e28e6f59222e583689b8.1572949325.git.mbobrowski@mbobrowski.org Signed-off-by: Theodore Ts'o <tytso@mit.edu>		2019-11-05 11:31:40 -05:00
..
9p	9p pull request for inclusion in 5.4	2019-09-27 15:10:34 -07:00
adfs
affs
afs	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-29 19:42:07 -07:00
autofs
befs
bfs
btrfs	for-5.4-rc2-tag	2019-10-10 08:30:51 -07:00
cachefiles
ceph	The highlights are:	2019-09-25 10:21:13 -07:00
cifs	CIFS: Force reval dentry if LOOKUP_REVAL flag is set	2019-10-09 00:10:50 -05:00
coda	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
configfs	configfs updates for 5.4:	2019-09-19 13:09:28 -07:00
cramfs	Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-19 10:06:57 -07:00
crypto
debugfs	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
devpts
dlm
ecryptfs
efivarfs
efs
erofs	erofs: fix mis-inplace determination related with noio chain	2019-10-01 04:54:45 +08:00
exportfs
ext2	iomap: use a srcmap for a read-modify-write I/O	2019-10-21 08:51:59 -07:00
ext4	ext4: update ext4_sync_file() to not use __generic_file_fsync()	2019-11-05 11:31:40 -05:00
f2fs	f2fs-for-5.4-rc1	2019-09-21 14:26:33 -07:00
fat	fat: delete an unnecessary check before brelse()	2019-09-25 17:51:40 -07:00
freevxfs
fscache
fuse	add virtio-fs	2019-09-27 15:54:24 -07:00
gfs2	iomap: use a srcmap for a read-modify-write I/O	2019-10-21 08:51:59 -07:00
hfs
hfsplus
hostfs
hpfs
hugetlbfs
iomap	fs/iomap: remove redundant check in iomap_dio_rw()	2019-10-29 09:51:24 -07:00
isofs	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
jbd2	jbd2: Free journal head outside of locked region	2019-10-21 09:16:46 -04:00
jffs2	Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-26 11:33:30 -07:00
jfs	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
kernfs	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
lockd
minix
nfs	NFSv4: Fix leak of clp->cl_acceptor string	2019-10-10 16:14:02 -04:00
nfs_common
nfsd	Highlights:	2019-09-27 17:00:27 -07:00
nilfs2
nls
notify	Highlights:	2019-09-27 17:00:27 -07:00
ntfs	ntfs: remove (un)?likely() from IS_ERR() conditions	2019-09-26 10:10:44 -07:00
ocfs2	jbd2: Make state lock a spinlock	2019-10-21 09:16:46 -04:00
omfs
openpromfs
orangefs	Orangefs: a fix and a cleanup	2019-09-19 10:21:35 -07:00
overlayfs	ovl: filter of trusted xattr results in audit	2019-09-11 16:11:45 +02:00
proc	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
pstore
qnx4
qnx6
quota
ramfs	vfs: Convert ramfs, shmem, tmpfs, devtmpfs, rootfs to use the new mount API	2019-09-12 21:05:34 -04:00
reiserfs	fs/reiserfs/do_balan.c: remove set but not used variable	2019-09-25 17:51:40 -07:00
romfs	Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-19 10:06:57 -07:00
squashfs	Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-19 10:06:57 -07:00
sysfs
sysv
tracefs	tracing: Do not create tracefs files if tracefs lockdown is in effect	2019-10-12 20:49:07 -04:00
ubifs	This pull request contains the following changes for UBI, UBIFS and JFFS2:	2019-09-21 11:10:16 -07:00
udf
ufs	y2038: add inode timestamp clamping	2019-09-19 09:42:37 -07:00
unicode	unicode: make array 'token' static const, makes object smaller	2019-09-17 11:48:24 -04:00
verity
xfs	iomap: use a srcmap for a read-modify-write I/O	2019-10-21 08:51:59 -07:00
aio.c
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c
binfmt_elf.c	elf: don't use MAP_FIXED_NOREPLACE for elf executable mappings	2019-10-06 13:53:27 -07:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
block_dev.c	Changes for 5.4:	2019-09-18 17:35:20 -07:00
buffer.c
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c
compat.c
coredump.c
d_path.c
dax.c	iomap: use a srcmap for a read-modify-write I/O	2019-10-21 08:51:59 -07:00
dcache.c
dcookies.c
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c
exec.c	sched/membarrier: Fix p->mm->membarrier_state racy load	2019-09-25 17:42:30 +02:00
fcntl.c
fhandle.c
file_table.c
file.c
filesystems.c
fs_context.c	vfs: subtype handling moved to fuse	2019-09-06 21:28:49 +02:00
fs_parser.c	vfs: Make fs_parse() handle fs_param_is_fd-type params better	2019-09-12 21:06:14 -04:00
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c	writeback: fix use-after-free in finish_writeback_work()	2019-10-07 15:47:19 -07:00
fsopen.c
inode.c	mm,thp: avoid writes to file with THP in pagecache	2019-09-24 15:54:11 -07:00
internal.h
io_uring.c	for-linus-20191012	2019-10-13 08:15:35 -07:00
ioctl.c
Kconfig	fs-verity for 5.4	2019-09-18 16:59:14 -07:00
Kconfig.binfmt
libfs.c	libfs: take cursors out of list when moving past the end of directory	2019-10-09 22:57:30 -04:00
locks.c	Highlights:	2019-09-27 17:00:27 -07:00
Makefile	fs-verity for 5.4	2019-09-18 16:59:14 -07:00
mbcache.c
mount.h
mpage.c
namei.c
namespace.c	Merge branch 'akpm' (patches from Andrew)	2019-09-26 10:29:42 -07:00
no-block.c
nsfs.c
open.c	fs: remove unlikely() from WARN_ON() condition	2019-09-26 10:10:30 -07:00
pipe.c
pnode.c
pnode.h
posix_acl.c
proc_namespace.c	vfs: subtype handling moved to fuse	2019-09-06 21:28:49 +02:00
read_write.c
readdir.c	uaccess: implement a proper unsafe_copy_to_user() and switch filldir over to it	2019-10-07 12:56:48 -07:00
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
statfs.c	vfs: Fix EOVERFLOW testing in put_compat_statfs64	2019-10-03 14:21:35 -07:00
super.c	Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-10-10 08:16:44 -07:00
sync.c
timerfd.c
userfaultfd.c	userfaultfd: untag user pointers	2019-09-25 17:51:41 -07:00
utimes.c
xattr.c