6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jan Kara [ Upstream commit 9d618d19b29c2943527e3a43da0a35aea91062fc ] The VFS will not be locking moved directory if its parent does not change. Change ocfs2 rename code to avoid touching renamed directory if its parent does not change as without locking that can corrupt the filesystem. Signed-off-by: Jan Kara Signed-off-by: Al Viro Assisted-by: LLM Signed-off-by: Artem Dinaburg Signed-off-by: Sasha Levin --- fs/ocfs2/namei.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 111e60ac19b94..886b0ddd883f0 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -1342,7 +1342,7 @@ static int ocfs2_rename(struct mnt_idmap *idmap, goto bail; } - if (S_ISDIR(old_inode->i_mode)) { + if (S_ISDIR(old_inode->i_mode) && new_dir != old_dir) { u64 old_inode_parent; update_dot_dot = 1; @@ -1359,8 +1359,7 @@ static int ocfs2_rename(struct mnt_idmap *idmap, goto bail; } - if (!new_inode && new_dir != old_dir && - new_dir->i_nlink >= ocfs2_link_max(osb)) { + if (!new_inode && new_dir->i_nlink >= ocfs2_link_max(osb)) { status = -EMLINK; goto bail; } @@ -1603,6 +1602,9 @@ static int ocfs2_rename(struct mnt_idmap *idmap, if (update_dot_dot) { status = ocfs2_update_entry(old_inode, handle, &old_inode_dot_dot_res, new_dir); + } + + if (S_ISDIR(old_inode->i_mode)) { drop_nlink(old_dir); if (new_inode) { drop_nlink(new_inode); -- 2.53.0