[PATCH 19/20] xfs: cross-reference realtime bitmap to realtime rmapbt scrubber

["Darrick J. Wong" <darrick.wong@xxxxxxxxxx>]

From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>

When we're checking the realtime rmapbt, cross-reference the entries
with the realtime bitmap too.

Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
 fs/xfs/scrub/rtbitmap.c |    5 +----
 fs/xfs/scrub/rtrmap.c   |   14 ++++++++++++++
 2 files changed, 15 insertions(+), 4 deletions(-)


diff --git a/fs/xfs/scrub/rtbitmap.c b/fs/xfs/scrub/rtbitmap.c
index 665d4bbb17cc..35c243a404e7 100644
--- a/fs/xfs/scrub/rtbitmap.c
+++ b/fs/xfs/scrub/rtbitmap.c
@@ -144,13 +144,10 @@ xchk_xref_is_used_rt_space(
 	if (do_div(endext, sc->mp->m_sb.sb_rextsize))
 		endext++;
 	extcount = endext - startext;
-	xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
 	error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, startext, extcount,
 			&is_free);
 	if (!xchk_should_check_xref(sc, &error, NULL))
-		goto out_unlock;
+		return;
 	if (is_free)
 		xchk_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
-out_unlock:
-	xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
 }
diff --git a/fs/xfs/scrub/rtrmap.c b/fs/xfs/scrub/rtrmap.c
index 95e182a306b9..1204f9648c83 100644
--- a/fs/xfs/scrub/rtrmap.c
+++ b/fs/xfs/scrub/rtrmap.c
@@ -56,6 +56,16 @@ xchk_setup_rtrmapbt(
 
 /* Realtime reverse mapping. */
 
+/* Cross-reference with other metadata. */
+STATIC void
+xchk_rtrmapbt_xref(
+	struct xfs_scrub	*sc,
+	struct xfs_rmap_irec	*irec)
+{
+	xchk_xref_is_used_rt_space(sc, irec->rm_startblock,
+			irec->rm_blockcount);
+}
+
 /* Scrub a realtime rmapbt record. */
 STATIC int
 xchk_rtrmapbt_helper(
@@ -86,6 +96,10 @@ xchk_rtrmapbt_helper(
 	if (is_bmbt || non_inode || is_attr)
 		xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
 
+	if (bs->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
+		goto out;
+
+	xchk_rtrmapbt_xref(bs->sc, &irec);
 out:
 	return error;
 }