linux-kernel - Re: [PATCH] blk-mq: determine in advance whether batch alloc can be performed

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Message-ID: <4fff9af8-90c3-86f9-37c7-75dcd3e95dc0@kernel.dk>
Date:   Fri, 26 Aug 2022 07:33:31 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Liu Song <liusong@...ux.alibaba.com>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] blk-mq: determine in advance whether batch alloc can be
 performed

On 8/25/22 7:26 PM, Liu Song wrote:
> From: Liu Song <liusong@...ux.alibaba.com>
> 
> Some conditions for judging whether batch alloc can be performed are
> included in "blk_mq_get_tags", and this function is only used by
> "__blk_mq_alloc_requests_batch".
> 
> This patch introduced a helper "can_do_batch_alloc" to prepend the
> judgment condition and avoid unnecessary function calls.

Curious if you saw any differences from this? Or do you just consider
it a cleanup?

-- 
Jens Axboe