While we're scrubbing various btrees, cross-reference the records
with the other metadata.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
libxfs/xfs_rtbitmap.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/libxfs/xfs_rtbitmap.c b/libxfs/xfs_rtbitmap.c
index 70ea975..d7a1acd 100644
--- a/libxfs/xfs_rtbitmap.c
+++ b/libxfs/xfs_rtbitmap.c
@@ -1011,3 +1011,32 @@ xfs_rtfree_extent(
}
return 0;
}
+
+/* Is the given extent all free? */
+int
+xfs_rtbitmap_extent_is_free(
+ struct xfs_mount *mp,
+ xfs_rtblock_t start,
+ xfs_rtblock_t len,
+ bool *is_free)
+{
+ xfs_rtblock_t end;
+ xfs_extlen_t clen;
+ int matches;
+ int error;
+
+ *is_free = false;
+ while (len) {
+ clen = len > ~0U ? ~0U : len;
+ error = xfs_rtcheck_range(mp, NULL, start, clen, 1, &end,
+ &matches);
+ if (error || !matches || end < start + clen)
+ return error;
+
+ len -= end - start;
+ start = end + 1;
+ }
+
+ *is_free = true;
+ return error;
+}
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