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Re: [Qemu-devel] [PATCH] block: Simplify BDRV_BLOCK_RAW recursion


From: Max Reitz
Subject: Re: [Qemu-devel] [PATCH] block: Simplify BDRV_BLOCK_RAW recursion
Date: Fri, 5 May 2017 21:32:02 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.0.1

On 04.05.2017 19:37, Eric Blake wrote:
> Since we are already in coroutine context during the body of
> bdrv_co_get_block_status(), we can shave off a few layers of
> wrappers when recursing to query the protocol when a format driver
> returned BDRV_BLOCK_RAW.
> 
> Note that we are already using the correct recursion later on in
> the same function, when probing whether the protocol layer is sparse
> in order to find out if we can add BDRV_BLOCK_ZERO to an existing
> BDRV_BLOCK_DATA|BDRV_BLOCK_OFFSET_VALID.
> 
> Signed-off-by: Eric Blake <address@hidden>
> ---
>  block/io.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Max Reitz <address@hidden>

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