linux-stable/fs/kernfs
Ian Kent 0559f63057 kernfs: fix missing kernfs_iattr_rwsem locking
When the kernfs_iattr_rwsem was introduced a case was missed.

The update of the kernfs directory node child count was also protected
by the kernfs_rwsem and needs to be included in the change so that the
child count (and so the inode n_link attribute) does not change while
holding the rwsem for read.

Fixes: 9caf696142 ("kernfs: Introduce separate rwsem to protect inode attributes.")
Cc: stable <stable@kernel.org>
Signed-off-by: Ian Kent <raven@themaw.net>
Reviewed-By: Imran Khan <imran.f.khan@oracle.com>
Acked-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Eric Sandeen <sandeen@sandeen.net>
Link: https://lore.kernel.org/r/169128520941.68052.15749253469930138901.stgit@donald.themaw.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-12 13:05:47 +02:00
..
dir.c kernfs: fix missing kernfs_iattr_rwsem locking 2023-08-12 13:05:47 +02:00
file.c tty, proc, kernfs, random: Use copy_splice_read() 2023-05-24 08:42:16 -06:00
inode.c kernfs: Introduce separate rwsem to protect inode attributes. 2023-03-29 12:23:45 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
kernfs-internal.h kernfs: Use a per-fs rwsem to protect per-fs list of kernfs_super_info. 2023-03-29 12:23:45 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mount.c kernfs: attach uuid for every kernfs and report it in fsid 2023-08-05 08:32:39 +02:00
symlink.c kernfs: fix all kernel-doc warnings and multiple typos 2022-11-23 19:28:26 +01:00