[Qemu-devel] [PATCH 1/2] blockjob: assert(cb) in the entry functions of blockjob

[Changlong Xie]

Signed-off-by: Changlong Xie <xiecl.f...@cn.fujitsu.com>
---
 block/commit.c | 1 +
 block/mirror.c | 2 ++
 block/stream.c | 1 +
 3 files changed, 4 insertions(+)

diff --git a/block/commit.c b/block/commit.c
index 444333b..13b55c1 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -223,6 +223,7 @@ void commit_start(BlockDriverState *bs, BlockDriverState 
*base,
     BlockDriverState *overlay_bs;
     Error *local_err = NULL;
 
+    assert(cb);
     assert(top != bs);
     if (top == base) {
         error_setg(errp, "Invalid files for merge: top and base are the same");
diff --git a/block/mirror.c b/block/mirror.c
index a04ed9c..fa2bdab 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -912,6 +912,7 @@ void mirror_start(BlockDriverState *bs, BlockDriverState 
*target,
     bool is_none_mode;
     BlockDriverState *base;
 
+    assert(cb);
     if (mode == MIRROR_SYNC_MODE_INCREMENTAL) {
         error_setg(errp, "Sync mode 'incremental' not supported");
         return;
@@ -935,6 +936,7 @@ void commit_active_start(BlockDriverState *bs, 
BlockDriverState *base,
     int ret;
     Error *local_err = NULL;
 
+    assert(cb);
     orig_base_flags = bdrv_get_flags(base);
 
     if (bdrv_reopen(base, bs->open_flags, errp)) {
diff --git a/block/stream.c b/block/stream.c
index c0efbda..fc34c63 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -226,6 +226,7 @@ void stream_start(BlockDriverState *bs, BlockDriverState 
*base,
 {
     StreamBlockJob *s;
 
+    assert(cb);
     s = block_job_create(&stream_job_driver, bs, speed, cb, opaque, errp);
     if (!s) {
         return;
-- 
1.9.3