linux-kernel - Re: [PATCH 1/2] block: Move general unplug callback function from md/raid to blk-core

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Message-ID: <20120605012116.GA357@kernel.org>
Date:	Tue, 5 Jun 2012 09:21:16 +0800
From:	Shaohua Li <shli@...nel.org>
To:	Tao Guo <glorioustao@...il.com>
Cc:	linux-kernel@...r.kernel.org, Tao Guo <Tao.Guo@....com>,
	Neil Brown <neilb@...e.de>, Jens Axboe <axboe@...nel.dk>,
	stable@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/2] block: Move general unplug callback function from
 md/raid to blk-core

On Mon, Jun 04, 2012 at 10:41:50AM -0400, Tao Guo wrote:
> Other components may also require an unplug callback, so move this
> function from md/raid to block generic layer.

I saw no point this should be generic code, for example, why blk_plug_cb only
handles only one request_queue? If umem needs unplug, just do in it.
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