Merge tag 'hole_punch_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-microblaze.git] / fs / xfs / xfs_inode.c

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 3c0bb21..f00145e 100644 (file)
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2774,6 +2774,19 @@ xfs_remove(
                error = xfs_droplink(tp, ip);
                if (error)
                        goto out_trans_cancel;
+
+               /*
+                * Point the unlinked child directory's ".." entry to the root
+                * directory to eliminate back-references to inodes that may
+                * get freed before the child directory is closed.  If the fs
+                * gets shrunk, this can lead to dirent inode validation errors.
+                */
+               if (dp->i_ino != tp->t_mountp->m_sb.sb_rootino) {
+                       error = xfs_dir_replace(tp, ip, &xfs_name_dotdot,
+                                       tp->t_mountp->m_sb.sb_rootino, 0);
+                       if (error)
+                               return error;
+               }
        } else {
                /*
                 * When removing a non-directory we need to log the parent