[Qemu-block] [PATCH v2 2/2] commit: Don't use error_abort in commit_start

[Fam Zheng]

bdrv_set_backing_hd failure needn't be abort. Since we already have
error parameter, use it.

Signed-off-by: Fam Zheng <address@hidden>
---
 block/commit.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/block/commit.c b/block/commit.c
index 22a0a4d..55f5cee 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -316,8 +316,20 @@ void commit_start(const char *job_id, BlockDriverState *bs,
         goto fail;
     }
 
-    bdrv_set_backing_hd(commit_top_bs, top, &error_abort);
-    bdrv_set_backing_hd(overlay_bs, commit_top_bs, &error_abort);
+    bdrv_set_backing_hd(commit_top_bs, top, &local_err);
+    if (local_err) {
+        bdrv_unref(commit_top_bs);
+        commit_top_bs = NULL;
+        error_propagate(errp, local_err);
+        goto fail;
+    }
+    bdrv_set_backing_hd(overlay_bs, commit_top_bs, &local_err);
+    if (local_err) {
+        bdrv_unref(commit_top_bs);
+        commit_top_bs = NULL;
+        error_propagate(errp, local_err);
+        goto fail;
+    }
 
     s->commit_top_bs = commit_top_bs;
     bdrv_unref(commit_top_bs);
-- 
2.9.3