From: Jeff Layton jlayton@kernel.org
[ 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@kernel.org Reviewed-by: David Sterba dsterba@suse.com [ add link to the opengroup docs ] Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/btrfs/inode.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 10ded9c2be03b..817816626738e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4379,6 +4379,7 @@ 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->vfs_inode.i_ctime = current_time(&inode->vfs_inode); dir->vfs_inode.i_mtime = inode->vfs_inode.i_ctime;