Date: Tue, 8 Oct 2013 09:10:36 -0400
From: Matthew Wilcox <willy@linux.intel.com>
To: Matias =?iso-8859-1?Q?Bj=F8rling?= <m@bjorling.me>
Cc: axboe@kernel.dk, linux-kernel@vger.kernel.org,
        linux-nvme@lists.infradead.org
Subject: Re: [PATCH RFC 0/2] Convert from bio-based to blk-mq
Message-ID: <20131008131036.GC7422@linux.intel.com>
References: <1381224862-5299-1-git-send-email-m@bjorling.me>
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On Tue, Oct 08, 2013 at 11:34:20AM +0200, Matias Bj?rling wrote:
> The nvme driver implements itself as a bio-based driver. This primarily because
> of high lock congestion for high-performance nvm devices. To remove the
> congestion, a multi-queue block layer is being implemented.

Um, no.  You'll crater performance by adding another memory allocation
(of the struct request).  multi-queue is not the solution.
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