blockjob: add block_job_release function

There is job resource leak in function mirror_start_job,
although bdrv_create_dirty_bitmap is unlikely failed.
Add block_job_release for each release when needed.

Signed-off-by: Ting Wang <kathy.wangting@huawei.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1435311455-56048-1-git-send-email-kathy.wangting@huawei.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/block/mirror.c b/block/mirror.c
index 8888cea..d409337 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -708,6 +708,8 @@ static void mirror_start_job(BlockDriverState *bs, BlockDriverState *target,
 
     s->dirty_bitmap = bdrv_create_dirty_bitmap(bs, granularity, NULL, errp);
     if (!s->dirty_bitmap) {
+        g_free(s->replaces);
+        block_job_release(bs);
         return;
     }
     bdrv_set_enable_write_cache(s->target, true);