diff mbox

[03/11] block: never cancel a streaming job without running stream_complete()

Message ID 253441199a31e729d56d7d6b1eede1c1634377ad.1431523498.git.berto@igalia.com
State New
Headers show

Commit Message

Alberto Garcia May 13, 2015, 1:27 p.m. UTC
We need to call stream_complete() in order to do all the necessary
clean-ups, even if there's an early failure. At the moment it's only
useful to make sure that s->backing_file_str is not leaked, but it
will become more important as we introduce support for streaming to
any intermediate node.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 block/stream.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

Comments

Fam Zheng May 15, 2015, 2:23 a.m. UTC | #1
On Wed, 05/13 16:27, Alberto Garcia wrote:
> We need to call stream_complete() in order to do all the necessary
> clean-ups, even if there's an early failure. At the moment it's only
> useful to make sure that s->backing_file_str is not leaked, but it
> will become more important as we introduce support for streaming to
> any intermediate node.
> 
> Signed-off-by: Alberto Garcia <berto@igalia.com>
> Reviewed-by: Max Reitz <mreitz@redhat.com>

Reviewed-by: Fam Zheng <famz@redhat.com>

> ---
>  block/stream.c | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/block/stream.c b/block/stream.c
> index a628901..37bfd8b 100644
> --- a/block/stream.c
> +++ b/block/stream.c
> @@ -114,21 +114,21 @@ static void coroutine_fn stream_run(void *opaque)
>      StreamCompleteData *data;
>      BlockDriverState *bs = s->common.bs;
>      BlockDriverState *base = s->base;
> -    int64_t sector_num, end;
> +    int64_t sector_num = 0;
> +    int64_t end = -1;
>      int error = 0;
>      int ret = 0;
>      int n = 0;
>      void *buf;
>  
>      if (!bs->backing_hd) {
> -        block_job_completed(&s->common, 0);
> -        return;
> +        goto out;
>      }
>  
>      s->common.len = bdrv_getlength(bs);
>      if (s->common.len < 0) {
> -        block_job_completed(&s->common, s->common.len);
> -        return;
> +        ret = s->common.len;
> +        goto out;
>      }
>  
>      end = s->common.len >> BDRV_SECTOR_BITS;
> @@ -215,6 +215,7 @@ wait:
>  
>      qemu_vfree(buf);
>  
> +out:
>      /* Modify backing chain and close BDSes in main loop */
>      data = g_malloc(sizeof(*data));
>      data->ret = ret;
> -- 
> 2.1.4
> 
>
diff mbox

Patch

diff --git a/block/stream.c b/block/stream.c
index a628901..37bfd8b 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -114,21 +114,21 @@  static void coroutine_fn stream_run(void *opaque)
     StreamCompleteData *data;
     BlockDriverState *bs = s->common.bs;
     BlockDriverState *base = s->base;
-    int64_t sector_num, end;
+    int64_t sector_num = 0;
+    int64_t end = -1;
     int error = 0;
     int ret = 0;
     int n = 0;
     void *buf;
 
     if (!bs->backing_hd) {
-        block_job_completed(&s->common, 0);
-        return;
+        goto out;
     }
 
     s->common.len = bdrv_getlength(bs);
     if (s->common.len < 0) {
-        block_job_completed(&s->common, s->common.len);
-        return;
+        ret = s->common.len;
+        goto out;
     }
 
     end = s->common.len >> BDRV_SECTOR_BITS;
@@ -215,6 +215,7 @@  wait:
 
     qemu_vfree(buf);
 
+out:
     /* Modify backing chain and close BDSes in main loop */
     data = g_malloc(sizeof(*data));
     data->ret = ret;