[Qemu-devel] [PATCH v2 1/7] block/qcow2-refcount: fix check_oflag_copied

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Increase corruptions_fixed only after successful fix.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 block/qcow2-refcount.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 3c539f02e5..615847eb09 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -1816,7 +1816,7 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
     for (i = 0; i < s->l1_size; i++) {
         uint64_t l1_entry = s->l1_table[i];
         uint64_t l2_offset = l1_entry & L1E_OFFSET_MASK;
-        bool l2_dirty = false;
+        int l2_fixed_entries = 0;
 
         if (!l2_offset) {
             continue;
@@ -1878,8 +1878,7 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
                         l2_table[j] = cpu_to_be64(refcount == 1
                                     ? l2_entry |  QCOW_OFLAG_COPIED
                                     : l2_entry & ~QCOW_OFLAG_COPIED);
-                        l2_dirty = true;
-                        res->corruptions_fixed++;
+                        l2_fixed_entries++;
                     } else {
                         res->corruptions++;
                     }
@@ -1887,7 +1886,7 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
             }
         }
 
-        if (l2_dirty) {
+        if (l2_fixed_entries > 0) {
             ret = qcow2_pre_write_overlap_check(bs, QCOW2_OL_ACTIVE_L2,
                                                 l2_offset, s->cluster_size);
             if (ret < 0) {
@@ -1905,6 +1904,7 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
                 res->check_errors++;
                 goto fail;
             }
+            res->corruptions_fixed += l2_fixed_entries;
         }
     }
 
-- 
2.11.1