Xiubo Li 77be53ba04 netfs: do not unlock and put the folio twice ... [ Upstream commit fac47b43c7 ] check_write_begin() will unlock and put the folio when return non-zero. So we should avoid unlocking and putting it twice in netfs layer. Change the way ->check_write_begin() works in the following two ways: (1) Pass it a pointer to the folio pointer, allowing it to unlock and put the folio prior to doing the stuff it wants to do, provided it clears the folio pointer. (2) Change the return values such that 0 with folio pointer set means continue, 0 with folio pointer cleared means re-get and all error codes indicating an error (no special treatment for -EAGAIN). [ bagasdotme: use Sphinx code text syntax for *foliop pointer ] Cc: stable@vger.kernel.org Link: https://tracker.ceph.com/issues/56423 Link: https://lore.kernel.org/r/cf169f43-8ee7-8697-25da-0204d1b4343e@redhat.com Co-developed-by: David Howells <dhowells@redhat.com> Signed-off-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-07-22 10:21:42 +02:00
..
caching	fscache: Remove the cookie parameter from fscache_clear_page_bits()	2022-04-08 23:54:37 +01:00
cifs	Documentation: ksmbd: update Feature Status table	2022-03-20 11:03:41 -05:00
ext4	ext4, doc: fix incorrect h_reserved size	2022-04-12 22:24:46 -04:00
nfs	nfs: reexport documentation	2021-09-21 17:51:47 -04:00
spufs	…
9p.rst	Replace HTTP links with HTTPS ones: 9P FILE SYSTEM	2020-07-13 11:28:12 -06:00
adfs.rst	…
affs.rst	affs: fix basic permission bits to actually work	2020-08-31 12:20:31 +02:00
afs.rst	AFS: Documentation: fix a few typos in afs.rst	2021-01-21 14:06:00 -07:00
api-summary.rst	block: move fs/block_dev.c to block/bdev.c	2021-09-07 08:39:40 -06:00
autofs-mount-control.rst	Documentation: filesystems: autofs-mount-control: drop doubled words	2020-07-05 14:44:29 -06:00
autofs.rst	docs: filesystems: Fix grammatical error "with" to "which"	2021-11-15 02:54:37 -07:00
automount-support.rst	…
befs.rst	…
bfs.rst	…
btrfs.rst	…
ceph.rst	doc: document new CephFS mount device syntax	2022-01-13 13:40:06 +01:00
coda.rst	Documentation: coda: annotate duplicated words	2020-07-13 10:02:32 -06:00
configfs.rst	Documentation: filesystems: configfs: drop doubled word	2020-07-05 14:44:29 -06:00
cramfs.rst	…
dax.rst	Documentation/filesystem/dax: update DAX description on erofs	2022-03-16 09:38:38 +08:00
debugfs.rst	debugfs: remove return value of debugfs_create_bool()	2021-05-21 20:59:03 +02:00
devpts.rst	…
directory-locking.rst	Documentation: filesystems: directory-locking: drop doubled word	2020-07-05 14:44:29 -06:00
dlmfs.rst	ocfs2: replace HTTP links with HTTPS ones	2020-08-07 11:33:22 -07:00
dnotify.rst	…
ecryptfs.rst	…
efivarfs.rst	…
erofs.rst	erofs: rename ctime to mtime	2022-03-17 23:41:14 +08:00
ext2.rst	docs: fix a cross-ref	2021-06-13 17:02:46 -06:00
ext3.rst	…
f2fs.rst	f2fs: remove obsolete whint_mode	2022-04-20 11:16:43 -07:00
fiemap.rst	A lot of bug fixes and cleanups for ext4, including:	2020-06-05 16:19:28 -07:00
files.rst	file: Rename fcheck lookup_fd_rcu	2020-12-10 12:40:07 -06:00
fscrypt.rst	fscrypt: update documentation for direct I/O support	2022-02-08 11:02:18 -08:00
fsverity.rst	fs: Remove ->readpages address space operation	2022-04-01 13:45:33 -04:00
fuse-io.rst	…
fuse.rst	fuse: update project homepage	2020-09-04 11:32:10 +02:00
gfs2-glocks.rst	…
gfs2-uevents.rst	…
gfs2.rst	Documentation: Update filesystems/gfs2.rst	2020-12-01 00:25:20 +01:00
hfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
hfsplus.rst	…
hpfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
idmappings.rst	docs: update mapping documentation	2021-12-03 18:58:11 +01:00
index.rst	Documentation: remove reference to now removed mandatory-locking doc	2021-10-05 06:02:53 -04:00
inotify.rst	…
isofs.rst	…
journalling.rst	jbd2: drop jbd2_fc_init documentation	2020-11-06 23:01:03 -05:00
locking.rst	fs: Remove ->readpages address space operation	2022-04-01 13:45:33 -04:00
locks.rst	docs: fs: locks.rst: update comment about mandatory file locking	2021-10-19 06:48:21 -04:00
mount_api.rst	Documentation: mount_api: change kernel log wording	2020-12-03 15:53:13 -07:00
netfs_library.rst	netfs: do not unlock and put the folio twice	2022-07-22 10:21:42 +02:00
nilfs2.rst	…
ntfs.rst	…
ntfs3.rst	Doc/fs/ntfs3: Fix rst format and make it cleaner	2021-09-20 18:53:12 +03:00
ocfs2-online-filecheck.rst	…
ocfs2.rst	ocfs2: replace HTTP links with HTTPS ones	2020-08-07 11:33:22 -07:00
omfs.rst	Replace HTTP links with HTTPS ones: OMFS	2020-07-13 11:24:43 -06:00
orangefs.rst	…
overlayfs.rst	ovl: skip checking lower file's i_writecount on truncate	2021-08-17 11:47:44 +02:00
path-lookup.rst	Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-07-03 11:41:14 -07:00
path-lookup.txt	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
porting.rst	fs: introduce alloc_inode_sb() to allocate filesystems specific inode	2022-03-22 15:57:03 -07:00
proc.rst	mm: add a field to store names for private anonymous memory	2022-01-15 16:30:27 +02:00
qnx6.rst	…
quota.rst	quota: Fixup http links in quota doc	2020-07-09 08:14:01 +02:00
ramfs-rootfs-initramfs.rst	Documentation: Fix intiramfs script name	2021-07-18 23:48:14 +09:00
relay.rst	…
romfs.rst	…
seq_file.rst	seq_file: document how per-entry resources are managed.	2021-02-26 09:41:05 -08:00
sharedsubtree.rst	…
splice.rst	…
squashfs.rst	…
sysfs.rst	Driver Core patches for 5.10-rc1	2020-10-14 16:09:32 -07:00
sysv-fs.rst	…
tmpfs.rst	tmpfs: fix Documentation nits	2020-12-15 12:13:39 -08:00
ubifs-authentication.rst	docs: ubifs-authentication: Add a top-level heading	2020-09-09 11:53:33 -06:00
ubifs.rst	…
udf.rst	udf: Replace HTTP links with HTTPS ones	2020-07-14 14:37:39 +02:00
vfat.rst	docs: filesystems: Fix a mundane typo	2021-03-25 11:51:23 -06:00
vfs.rst	fs: Remove ->readpages address space operation	2022-04-01 13:45:33 -04:00
virtiofs.rst	…
xfs-delayed-logging-design.rst	…
xfs-self-describing-metadata.rst	…
zonefs.rst	zonefs: document the explicit-open mount option	2020-09-15 18:32:58 +09:00