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-rw-r--r--block/block-backend.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/block/block-backend.c b/block/block-backend.c
index 3a13cb5f0b..24dd0670d1 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2279,10 +2279,13 @@ int blk_commit_all(void)
 
     while ((blk = blk_all_next(blk)) != NULL) {
         AioContext *aio_context = blk_get_aio_context(blk);
+        BlockDriverState *unfiltered_bs = bdrv_skip_filters(blk_bs(blk));
 
         aio_context_acquire(aio_context);
-        if (blk_is_inserted(blk) && blk->root->bs->backing) {
-            int ret = bdrv_commit(blk->root->bs);
+        if (blk_is_inserted(blk) && bdrv_cow_child(unfiltered_bs)) {
+            int ret;
+
+            ret = bdrv_commit(unfiltered_bs);
             if (ret < 0) {
                 aio_context_release(aio_context);
                 return ret;