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Re: [Qemu-devel] [PATCH v3] qemu-img: check block status of backing file

From: Denis V. Lunev
Subject: Re: [Qemu-devel] [PATCH v3] qemu-img: check block status of backing file when converting.
Date: Thu, 21 Apr 2016 09:53:18 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 
On 04/17/2016 07:30 AM, Ren Kimura wrote:

When converting images, check the block status of its backing file chain
to avoid needlessly reading zeros.

Signed-off-by: Ren Kimura <address@hidden>
IMHO bdrv_get_block_status_above(bs, NULL, ...) should do the job without recursion.
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