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Re: [Qemu-block] [PATCH 1/1] block: fix possible return code clobbering


From: Kevin Wolf
Subject: Re: [Qemu-block] [PATCH 1/1] block: fix possible return code clobbering in bdrv_co_pdiscard
Date: Mon, 10 Jul 2017 15:59:02 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

Am 10.07.2017 um 10:35 hat Denis V. Lunev geschrieben:
> Signed-off-by: Denis V. Lunev <address@hidden>
> CC: Stefan Hajnoczi <address@hidden> (supporter:Block I/O path)
> CC: Fam Zheng <address@hidden> (supporter:Block I/O path)
> ---
>  block/io.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/block/io.c b/block/io.c
> index ed31810c0a..e5c6dc77d3 100644
> --- a/block/io.c
> +++ b/block/io.c
> @@ -2464,7 +2464,6 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs, 
> int64_t offset,
>      assert(max_pdiscard >= bs->bl.request_alignment);
>  
>      while (count > 0) {
> -        int ret;
>          int num = count;
>  
>          if (head) {

Good catch, and the fix looks fine.

This needs rebasing, though (conflicts with commit f5a5ca7 'block:
change variable names in BlockDriverState').

Kevin



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