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linux/Documentation/filesystems
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Amir Goldstein eedc92622b ovl: mark xwhiteouts directory with overlay.opaque='x' 
commit 420332b941 upstream.

An opaque directory cannot have xwhiteouts, so instead of marking an
xwhiteouts directory with a new xattr, overload overlay.opaque xattr
for marking both opaque dir ('y') and xwhiteouts dir ('x').

This is more efficient as the overlay.opaque xattr is checked during
lookup of directory anyway.

This also prevents unnecessary checking the xattr when reading a
directory without xwhiteouts, i.e. most of the time.

Note that the xwhiteouts marker is not checked on the upper layer and
on the last layer in lowerstack, where xwhiteouts are not expected.

Fixes: bc8df7a3dc ("ovl: Add an alternative type of whiteout")
Cc: <stable@vger.kernel.org> # v6.7
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Tested-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-01-31 16:21:11 -08:00
..
caching Documentation: Fix typos 2023-08-18 11:29:03 -06:00
ext4 Documentation: Fix typos 2023-08-18 11:29:03 -06:00
nfs vfs-6.7.fsid 2023-11-07 12:11:26 -08:00
smb smb3: move Documentation/filesystems/cifs to Documentation/filesystems/smb 2023-05-24 16:29:21 -05:00
spufs Documentation: spufs: correct a duplicate word typo 2022-09-27 13:21:44 -06:00
9p.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
adfs.rst docs: filesystems: convert adfs.txt to ReST 2020-03-02 13:58:44 -07:00
affs.rst affs: fix basic permission bits to actually work 2020-08-31 12:20:31 +02:00
afs.rst afs: Documentation: correct reference to CONFIG_AFS_FS 2023-07-21 13:46:02 -06:00
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 autofs: use flexible array in ioctl structure 2023-05-30 16:42:00 -07:00
autofs.rst autofs: use flexible array in ioctl structure 2023-05-30 16:42:00 -07:00
automount-support.rst docs: filesystems: convert automount-support.txt to ReST 2020-05-05 09:22:21 -06:00
befs.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
bfs.rst docs: filesystems: convert bfs.txt to ReST 2020-03-02 14:01:26 -07:00
btrfs.rst MAINTAINERS: remove links to obsolete btrfs.wiki.kernel.org 2023-09-08 14:21:27 +02:00
ceph.rst ceph: update documentation regarding snapshot naming limitations 2023-08-24 11:24:36 +02:00
coda.rst Documentation: coda: annotate duplicated words 2020-07-13 10:02:32 -06:00
configfs.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
cramfs.rst docs: filesystems: convert cramfs.txt to ReST 2020-03-02 14:02:07 -07:00
dax.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
debugfs.rst debugfs: small Documentation cleaning 2022-11-09 13:58:55 -07:00
devpts.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
directory-locking.rst rename(): fix the locking of subdirectories 2024-01-31 16:21:03 -08:00
dlmfs.rst docs: update ocfs2-devel mailing list address 2023-07-08 09:29:29 -07:00
dnotify.rst docs: filesystems: convert dnotify.txt to ReST 2020-05-05 09:22:22 -06:00
ecryptfs.rst docs: prevent warnings due to autosectionlabel 2020-03-20 17:01:29 -06:00
efivarfs.rst docs: filesystems: add info about efivars content 2020-05-25 18:59:59 -06:00
erofs.rst MAINTAINERS: erofs: add EROFS webpage 2023-11-17 19:55:46 +08:00
ext2.rst ext2: remove nobh support 2022-08-02 12:34:04 -04:00
ext3.rst docs: filesystems: convert ext3.txt to ReST 2020-03-02 14:03:16 -07:00
f2fs.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
fiemap.rst A lot of bug fixes and cleanups for ext4, including: 2020-06-05 16:19:28 -07:00
files.rst file: convert to SLAB_TYPESAFE_BY_RCU 2023-10-19 11:02:48 +02:00
fscrypt.rst fscrypt: track master key presence separately from secret 2023-10-16 21:23:45 -07:00
fsverity.rst ovl: Add framework for verity support 2023-08-12 19:02:38 +03:00
fuse-io.rst docs/fuse-io: Document the usage of DIRECT_IO_ALLOW_MMAP 2023-12-04 10:16:53 +01:00
fuse.rst fuse: Add module param for CAP_SYS_ADMIN access bypassing allow_other 2022-07-21 16:06:19 +02:00
gfs2-glocks.rst gfs2 fixes 2023-09-05 13:00:28 -07:00
gfs2-uevents.rst docs: filesystems: convert gfs2-uevents.txt to ReST 2020-03-02 14:03:35 -07:00
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 docs: filesystems: convert hfsplus.txt to ReST 2020-03-02 14:03:47 -07:00
hpfs.rst Replace HTTP links with HTTPS ones: Documentation/filesystems 2020-06-26 11:14:12 -06:00
idmappings.rst Documentation work keeps chugging along; stuff for 6.6 includes: 2023-08-30 20:05:42 -07:00
index.rst docs: add maintainer entry profile for XFS 2023-08-10 07:47:53 -07:00
inotify.rst docs: filesystems: convert inotify.txt to ReST 2020-03-02 14:03:55 -07:00
isofs.rst docs: filesystems: convert isofs.txt to ReST 2020-03-02 14:04:06 -07:00
journalling.rst jbd2: drop jbd2_fc_init documentation 2020-11-06 23:01:03 -05:00
locking.rst rename(): fix the locking of subdirectories 2024-01-31 16:21:03 -08:00
locks.rst docs: fs: locks.rst: update comment about mandatory file locking 2021-10-19 06:48:21 -04:00
mount_api.rst fs_context: drop the unused lsm_flags member 2023-03-16 14:38:28 +01:00
netfs_library.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
nilfs2.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
ntfs.rst docs: filesystems: convert ntfs.txt to ReST 2020-03-02 14:04:06 -07:00
ntfs3.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
ocfs2-online-filecheck.rst docs: filesystems: convert ocfs2-online-filecheck.txt to ReST 2020-03-02 14:04:06 -07:00
ocfs2.rst docs: update ocfs2-devel mailing list address 2023-07-08 09:29:29 -07:00
omfs.rst Replace HTTP links with HTTPS ones: OMFS 2020-07-13 11:24:43 -06:00
orangefs.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
overlayfs.rst ovl: mark xwhiteouts directory with overlay.opaque='x' 2024-01-31 16:21:11 -08:00
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 rename(): fix the locking of subdirectories 2024-01-31 16:21:03 -08:00
proc.rst doc: Add /proc/bootconfig to proc.rst 2023-10-31 18:46:43 +09:00
qnx6.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
quota.rst quota: Fixup http links in quota doc 2020-07-09 08:14:01 +02:00
ramfs-rootfs-initramfs.rst Documentation/filesystems: ramfs-rootfs-initramfs: use :Author: 2023-05-16 12:55:35 -06:00
relay.rst docs: filesystems: convert relay.txt to ReST 2020-03-02 14:04:41 -07:00
romfs.rst docs: filesystems: convert romfs.txt to ReST 2020-03-02 14:04:41 -07:00
seq_file.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
sharedsubtree.rst Documentation/filesystems: sharedsubtree: add section headings 2023-05-16 12:50:05 -06:00
splice.rst docs: Bring some order to filesystem documentation 2019-03-06 09:46:10 -07:00
squashfs.rst docs: filesystems: convert squashfs.txt to ReST 2020-03-02 14:04:41 -07:00
sysfs.rst driver core: bus: mark the struct bus_type for sysfs callbacks as constant 2023-03-23 13:20:40 +01:00
sysv-fs.rst docs: filesystems: convert sysv-fs.txt to ReST 2020-03-02 14:04:41 -07:00
tmpfs.rst tmpfs,xattr: enable limited user extended attributes 2023-08-10 12:06:04 +02:00
ubifs-authentication.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
ubifs.rst Documentation: ubifs: Fix compression idiom 2022-10-10 13:01:10 -06:00
udf.rst udf: Replace HTTP links with HTTPS ones 2020-07-14 14:37:39 +02:00
vfat.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
vfs.rst Documentation work keeps chugging along; stuff for 6.6 includes: 2023-08-30 20:05:42 -07:00
virtiofs.rst virtiofs: Add mount option and atime behavior to the doc 2020-04-20 17:01:34 +02:00
xfs-delayed-logging-design.rst Documentation: filesystems: correct possessive "its" 2022-09-27 13:21:44 -06:00
xfs-maintainer-entry-profile.rst docs: add maintainer entry profile for XFS 2023-08-10 07:47:53 -07:00
xfs-online-fsck-design.rst Documentation: xfs: Remove repeated word in comments 2023-09-22 05:20:09 -06:00
xfs-self-describing-metadata.rst xfs: document the filesystem metadata checking strategy 2023-04-11 18:59:47 -07:00
zonefs.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00