When we're scrubbing various btrees, cross-reference the records with
the bnobt to ensure that we don't also think the space is free.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
libxfs/xfs_alloc.c | 19 +++++++++++++++++++
libxfs/xfs_alloc.h | 3 +++
2 files changed, 22 insertions(+)
diff --git a/libxfs/xfs_alloc.c b/libxfs/xfs_alloc.c
index 055d57e..96c6e2e 100644
--- a/libxfs/xfs_alloc.c
+++ b/libxfs/xfs_alloc.c
@@ -2970,3 +2970,22 @@ xfs_alloc_query_range(
return xfs_btree_query_range(cur, &low_brec, &high_brec,
xfs_alloc_query_range_helper, &query);
}
+
+/* Is there a record covering a given extent? */
+int
+xfs_alloc_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.a.ar_startblock = bno;
+ memset(&high, 0xFF, sizeof(high));
+ high.a.ar_startblock = bno + len - 1;
+
+ return xfs_btree_has_record(cur, &low, &high, exists);
+}
diff --git a/libxfs/xfs_alloc.h b/libxfs/xfs_alloc.h
index c3ada6b..b740456 100644
--- a/libxfs/xfs_alloc.h
+++ b/libxfs/xfs_alloc.h
@@ -222,4 +222,7 @@ int xfs_alloc_query_range(struct xfs_btree_cur *cur,
struct xfs_alloc_rec_incore *high_rec,
xfs_alloc_query_range_fn fn, void *priv);
+int xfs_alloc_has_record(struct xfs_btree_cur *cur, xfs_agblock_t bno,
+ xfs_extlen_t len, bool *exist);
+
#endif /* __XFS_ALLOC_H__ */
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