During metadata btree scrub, we should cross-reference with the
reference counts.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
libxfs/xfs_refcount.c | 19 +++++++++++++++++++
libxfs/xfs_refcount.h | 3 +++
2 files changed, 22 insertions(+)
diff --git a/libxfs/xfs_refcount.c b/libxfs/xfs_refcount.c
index 7d3735f..2d747ba 100644
--- a/libxfs/xfs_refcount.c
+++ b/libxfs/xfs_refcount.c
@@ -1534,3 +1534,22 @@ xfs_refcount_free_cow_extent(
return __xfs_refcount_add(mp, dfops, XFS_REFCOUNT_FREE_COW,
fsb, len);
}
+
+/* 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 105c246..a00400f 100644
--- a/libxfs/xfs_refcount.h
+++ b/libxfs/xfs_refcount.h
@@ -64,4 +64,7 @@ extern int xfs_refcount_free_cow_extent(struct xfs_mount *mp,
struct xfs_defer_ops *dfops, xfs_fsblock_t fsb,
xfs_extlen_t len);
+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__ */
_______________________________________________
xfs mailing list
xfs@xxxxxxxxxxx
http://oss.sgi.com/mailman/listinfo/xfs
