Re: [Qemu-devel] [PATCH v4 3/7] block: Replace in_use with operation blocker

[Fam Zheng]

On 2013年11月26日 01:11, Paolo Bonzini wrote:
Il 22/11/2013 06:24, Fam Zheng ha scritto:
@@ -41,13 +41,11 @@ void *block_job_create(const BlockJobDriver *driver, 
BlockDriverState *bs,
  {
      BlockJob *job;
-    if (bs->job || bdrv_in_use(bs)) {
+    if (bs->job) {
          error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs));
          return NULL;
      }
      bdrv_ref(bs);

Why is this check disappearing?


Because this patch is moving this check to callers, and changing it to 
op blocker check.

Fam