diff mbox

[28/39] xfs: cross-reference refcount btree during scrub

Message ID 147830565091.4165.3968389866491066069.stgit@birch.djwong.org (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Darrick J. Wong Nov. 5, 2016, 12:27 a.m. UTC 
During metadata btree scrub, we should cross-reference with the
reference counts.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 libxfs/xfs_refcount.c |   19 +++++++++++++++++++
 libxfs/xfs_refcount.h |    3 +++
 2 files changed, 22 insertions(+)



--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/libxfs/xfs_refcount.c b/libxfs/xfs_refcount.c
index 0508ec3..124d5c0 100644
--- a/libxfs/xfs_refcount.c
+++ b/libxfs/xfs_refcount.c
@@ -1695,3 +1695,22 @@  xfs_refcount_recover_cow_leftovers(
 	xfs_trans_cancel(tp);
 	goto out_free;
 }
+
+/* Is there a record covering a given extent? */
+int
+xfs_refcount_has_record(
+	struct xfs_btree_cur	*cur,
+	xfs_agblock_t		bno,
+	xfs_extlen_t		len,
+	bool			*exists)
+{
+	union xfs_btree_irec	low;
+	union xfs_btree_irec	high;
+
+	memset(&low, 0, sizeof(low));
+	low.rc.rc_startblock = bno;
+	memset(&high, 0xFF, sizeof(high));
+	high.rc.rc_startblock = bno + len - 1;
+
+	return xfs_btree_has_record(cur, &low, &high, exists);
+}
diff --git a/libxfs/xfs_refcount.h b/libxfs/xfs_refcount.h
index 098dc66..78cb142 100644
--- a/libxfs/xfs_refcount.h
+++ b/libxfs/xfs_refcount.h
@@ -67,4 +67,7 @@  extern int xfs_refcount_free_cow_extent(struct xfs_mount *mp,
 extern int xfs_refcount_recover_cow_leftovers(struct xfs_mount *mp,
 		xfs_agnumber_t agno);
 
+extern int xfs_refcount_has_record(struct xfs_btree_cur *cur,
+		xfs_agblock_t bno, xfs_extlen_t len, bool *exists);
+
 #endif	/* __XFS_REFCOUNT_H__ */