block: Support BDRV_REQ_WRITE_UNCHANGED in filters

[qemu.git] / block / qed-check.c

diff --git a/block/qed-check.c b/block/qed-check.c
index 622f308976c8a00d6f0ad314f0c633d7f189bdc6..0edac031594f2993a5e3836281e5e325b5c92c6d 100644 (file)
--- a/block/qed-check.c
+++ b/block/qed-check.c
@@ -217,6 +217,7 @@ static void qed_check_mark_clean(BDRVQEDState *s, BdrvCheckResult *result)
     qed_write_header_sync(s);
 }
 
+/* Called with table_lock held.  */
 int qed_check(BDRVQEDState *s, BdrvCheckResult *result, bool fix)
 {
     QEDCheck check = {
@@ -234,8 +235,7 @@ int qed_check(BDRVQEDState *s, BdrvCheckResult *result, bool fix)
     }
 
     check.result->bfi.total_clusters =
-        (s->header.image_size + s->header.cluster_size - 1) /
-            s->header.cluster_size;
+        DIV_ROUND_UP(s->header.image_size, s->header.cluster_size);
     ret = qed_check_l1_table(&check, s->l1_table);
     if (ret == 0) {
         /* Only check for leaks if entire image was scanned successfully */