[PATCH 20/31] xfs: Add parent pointers to xfs_cross_rename

Darrick J. Wong
2024-04-16T01:31:15Z

From: Allison Henderson <allison.henderson@oracle.com>

Cross renames are handled separately from standard renames, and
need different handling to update the parent attributes correctly.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_inode.c | 33 +++++++++++++++++++++++++--------
1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index ea619f5140739..766cbb8b7be51 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2971,15 +2971,17 @@ xfs_cross_rename(
struct xfs_inode *dp1,
struct xfs_name *name1,
struct xfs_inode *ip1,
+ struct xfs_parent_args *ip1_ppargs,
struct xfs_inode *dp2,
struct xfs_name *name2,
struct xfs_inode *ip2,
+ struct xfs_parent_args *ip2_ppargs,
int spaceres)
{
- int error = 0;
- int ip1_flags = 0;
- int ip2_flags = 0;
- int dp2_flags = 0;
+ int error = 0;
+ int ip1_flags = 0;
+ int ip2_flags = 0;
+ int dp2_flags = 0;

/* Swap inode number for dirent in first parent */
error = xfs_dir_replace(tp, dp1, name1, ip2->i_ino, spaceres);
@@ -3048,6 +3050,21 @@ xfs_cross_rename(
}
}

+ /* Schedule parent pointer replacements */
+ if (ip1_ppargs) {
+ error = xfs_parent_replacename(tp, ip1_ppargs, dp1, name1, dp2,
+ name2, ip1);
+ if (error)
+ goto out_trans_abort;
+ }
+
+ if (ip2_ppargs) {
+ error = xfs_parent_replacename(tp, ip2_ppargs, dp2, name2, dp1,
+ name1, ip2);
+ if (error)
+ goto out_trans_abort;
+ }
+
if (ip1_flags) {
xfs_trans_ichgtime(tp, ip1, ip1_flags);
xfs_trans_log_inode(tp, ip1, XFS_ILOG_CORE);
@@ -3264,10 +3281,10 @@ xfs_rename(
/* RENAME_EXCHANGE is unique from here on. */
if (flags & RENAME_EXCHANGE) {
error = xfs_cross_rename(tp, src_dp, src_name, src_ip,
- target_dp, target_name, target_ip,
- spaceres);
- xfs_iunlock_rename(inodes, num_inodes);
- return error;
+ src_ppargs, target_dp, target_name, target_ip,
+ tgt_ppargs, spaceres);
+ nospace_error = 0;
+ goto out_unlock;
}

/*