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Re: [Qemu-devel] [PATCH for-2.4] block: keep bitmap if incremental backu


From: John Snow
Subject: Re: [Qemu-devel] [PATCH for-2.4] block: keep bitmap if incremental backup job is cancelled
Date: Thu, 25 Jun 2015 12:30:56 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0


On 06/25/2015 08:53 AM, Stefan Hajnoczi wrote:
> Reclaim the dirty bitmap if an incremental backup block job is
> cancelled.  The ret variable may be 0 when the job is cancelled so it's
> not enough to check ret < 0.
> 
> Reviewed-by: John Snow <address@hidden>
> Reviewed-by: Max Reitz <address@hidden>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
>  block/backup.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/block/backup.c b/block/backup.c
> index 4a1af68..ddf8424 100644
> --- a/block/backup.c
> +++ b/block/backup.c
> @@ -431,7 +431,7 @@ static void coroutine_fn backup_run(void *opaque)
>  
>      if (job->sync_bitmap) {
>          BdrvDirtyBitmap *bm;
> -        if (ret < 0) {
> +        if (ret < 0 || block_job_is_cancelled(&job->common)) {
>              /* Merge the successor back into the parent, delete nothing. */
>              bm = bdrv_reclaim_dirty_bitmap(bs, job->sync_bitmap, NULL);
>              assert(bm);
> 

Didn't Jeff Cody already stage this?



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