This is a note to let you know that I've just added the patch titled
btrfs: update target inode's ctime on unlink
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
btrfs-update-target-inode-s-ctime-on-unlink.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit be85be27496715ea66fe44d2077b0a82544f6c53
Author: Jeff Layton <jlayton@xxxxxxxxxx>
Date: Mon Aug 12 12:30:52 2024 -0400
btrfs: update target inode's ctime on unlink
[ Upstream commit 3bc2ac2f8f0b78a13140fc72022771efe0c9b778 ]
Unlink changes the link count on the target inode. POSIX mandates that
the ctime must also change when this occurs.
According to https://pubs.opengroup.org/onlinepubs/9699919799/functions/unlink.html:
"Upon successful completion, unlink() shall mark for update the last data
modification and last file status change timestamps of the parent
directory. Also, if the file's link count is not 0, the last file status
change timestamp of the file shall be marked for update."
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
[ add link to the opengroup docs ]
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a42238211887..ee04185d8e0f 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4148,6 +4148,7 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans,
btrfs_i_size_write(dir, dir->vfs_inode.i_size - name->len * 2);
inode_inc_iversion(&inode->vfs_inode);
+ inode_set_ctime_current(&inode->vfs_inode);
inode_inc_iversion(&dir->vfs_inode);
inode_set_ctime_current(&inode->vfs_inode);
dir->vfs_inode.i_mtime = inode_set_ctime_current(&dir->vfs_inode);
