[PATCH 15/18] xfs: Add parent pointers to rename

[Allison Henderson <allison.henderson@oracle.com>]

This patch removes the old parent pointer attribute during the
rename operation, and re-adds the updated parent pointer

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
 fs/xfs/xfs_inode.c | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 29c58b3..f0b5421 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2990,6 +2990,8 @@ xfs_rename(
 	bool			src_is_directory = S_ISDIR(VFS_I(src_ip)->i_mode);
 	int			spaceres;
 	int			error;
+	xfs_dir2_dataptr_t	new_diroffset;
+	xfs_dir2_dataptr_t	old_diroffset;
 
 	trace_xfs_rename(src_dp, target_dp, src_name, target_name);
 
@@ -3092,7 +3094,7 @@ xfs_rename(
 		 */
 		error = xfs_dir_createname(tp, target_dp, target_name,
 					   src_ip->i_ino, &first_block, &dfops,
-					   spaceres, NULL);
+					   spaceres, &new_diroffset);
 		if (error)
 			goto out_bmap_cancel;
 
@@ -3132,7 +3134,7 @@ xfs_rename(
 		 */
 		error = xfs_dir_replace(tp, target_dp, target_name,
 					src_ip->i_ino, &first_block, &dfops,
-					spaceres, NULL);
+					spaceres, &new_diroffset);
 		if (error)
 			goto out_bmap_cancel;
 
@@ -3167,7 +3169,7 @@ xfs_rename(
 		 */
 		error = xfs_dir_replace(tp, src_ip, &xfs_name_dotdot,
 					target_dp->i_ino, &first_block, &dfops,
-					spaceres, NULL);
+					spaceres, &new_diroffset);
 		ASSERT(error != -EEXIST);
 		if (error)
 			goto out_bmap_cancel;
@@ -3206,11 +3208,12 @@ xfs_rename(
 	 */
 	if (wip) {
 		error = xfs_dir_replace(tp, src_dp, src_name, wip->i_ino,
-					&first_block, &dfops, spaceres, NULL);
+					&first_block, &dfops, spaceres,
+					&old_diroffset);
 	} else
 		error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
 					   &first_block, &dfops, spaceres,
-					   NULL);
+					   &old_diroffset);
 	if (error)
 		goto out_bmap_cancel;
 
@@ -3240,6 +3243,18 @@ xfs_rename(
 		VFS_I(wip)->i_state &= ~I_LINKABLE;
 	}
 
+	if (xfs_sb_version_hasparent(&mp->m_sb)) {
+		error = xfs_parent_add_deferred(target_dp, src_ip, target_name,
+				       new_diroffset, &dfops);
+		if (error)
+			goto out_bmap_cancel;
+
+		error = xfs_parent_remove_deferred(src_dp, src_ip,
+						   old_diroffset, &dfops);
+		if (error)
+			goto out_bmap_cancel;
+	}
+
 	xfs_trans_ichgtime(tp, src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
 	xfs_trans_log_inode(tp, src_dp, XFS_ILOG_CORE);
 	if (new_parent)
-- 
2.7.4