xfs: update rmap to allow cow staging extents in the rt rmap

Source kernel commit: 0bada82331238bd366aaa0566d125c6338b42590

Don't error out on CoW staging extent records when realtime reflink is
enabled.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

diff --git a/libxfs/xfs_rmap.c b/libxfs/xfs_rmap.c
index 3748bfc7a9dfc1a55bd5c6f7f98d57390c3262c5..8c0c22a3491df4c2580876f3e44eb7bc81c4fde7 100644 (file)
--- a/libxfs/xfs_rmap.c
+++ b/libxfs/xfs_rmap.c
@@ -284,6 +284,13 @@ xfs_rtrmap_check_meta_irec(
                if (irec->rm_blockcount != mp->m_sb.sb_rextsize)
                        return __this_address;
                return NULL;
+       case XFS_RMAP_OWN_COW:
+               if (!xfs_has_rtreflink(mp))
+                       return __this_address;
+               if (!xfs_verify_rgbext(rtg, irec->rm_startblock,
+                                           irec->rm_blockcount))
+                       return __this_address;
+               return NULL;
        default:
                return __this_address;
        }