[PATCH 35/44] xfs: scrub the metadir path of rt refcount btree files

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Add a new XFS_SCRUB_METAPATH subtype so that we can scrub the metadata
directory tree path to the refcount btree file for each rt group.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 fs/xfs/libxfs/xfs_fs.h  |    3 ++-
 fs/xfs/scrub/metapath.c |   14 ++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)


diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 7847da61db232..4159e96d01ae6 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -806,9 +806,10 @@ struct xfs_scrub_metadata {
 #define XFS_SCRUB_METAPATH_GRPQUOTA	3
 #define XFS_SCRUB_METAPATH_PRJQUOTA	4
 #define XFS_SCRUB_METAPATH_RTRMAPBT	5
+#define XFS_SCRUB_METAPATH_RTREFCBT	6
 
 /* Number of metapath sm_ino values */
-#define XFS_SCRUB_METAPATH_NR		6
+#define XFS_SCRUB_METAPATH_NR		7
 
 /*
  * ioctl limits
diff --git a/fs/xfs/scrub/metapath.c b/fs/xfs/scrub/metapath.c
index 6afd117c890e9..447bdbea210d2 100644
--- a/fs/xfs/scrub/metapath.c
+++ b/fs/xfs/scrub/metapath.c
@@ -23,6 +23,7 @@
 #include "xfs_attr.h"
 #include "xfs_rtgroup.h"
 #include "xfs_rtrmap_btree.h"
+#include "xfs_rtrefcount_btree.h"
 #include "scrub/scrub.h"
 #include "scrub/common.h"
 #include "scrub/trace.h"
@@ -106,6 +107,7 @@ xchk_setup_metapath(
 
 	switch (sc->sm->sm_ino) {
 	case XFS_SCRUB_METAPATH_RTRMAPBT:
+	case XFS_SCRUB_METAPATH_RTREFCBT:
 		/* empty */
 		break;
 	default:
@@ -157,6 +159,18 @@ xchk_setup_metapath(
 			xfs_rtgroup_put(rtg);
 		}
 		break;
+	case XFS_SCRUB_METAPATH_RTREFCBT:
+		error = xfs_rtrefcountbt_create_path(mp, sc->sm->sm_agno,
+				&path);
+		if (error)
+			return error;
+		mpath->path = path;
+		rtg = xfs_rtgroup_get(mp, sc->sm->sm_agno);
+		if (rtg) {
+			ip = rtg->rtg_refcountip;
+			xfs_rtgroup_put(rtg);
+		}
+		break;
 	default:
 		return -EINVAL;
 	}