xfs: add xfs_verify_agino_or_null helper

Add a new helper to check that a per-AG inode pointer is either null or
points somewhere valid within that AG.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
index 09d9c8cfa4a0..82c4374acb4c 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.c
+++ b/fs/xfs/libxfs/xfs_inode_buf.c
@@ -99,8 +99,7 @@ xfs_inode_buf_verify(
                 unlinked_ino = be32_to_cpu(dip->di_next_unlinked);
                 di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) &&
                         xfs_dinode_good_version(mp, dip->di_version) &&
-                        (unlinked_ino == NULLAGINO ||
-                         xfs_verify_agino(mp, agno, unlinked_ino));
+                        xfs_verify_agino_or_null(mp, agno, unlinked_ino);
                 if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
                                                 XFS_ERRTAG_ITOBP_INOTOBP))) {
                         if (readahead) {