linux-kernel - Re: [PATCH] UBI: Block: Add blk-mq support

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Message-ID: <20141103081821.GA5261@infradead.org>
Date:	Mon, 3 Nov 2014 00:18:21 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	Richard Weinberger <richard@....at>
Cc:	axboe@...com, dedekind1@...il.com,
	ezequiel.garcia@...e-electrons.com, dwmw2@...radead.org,
	computersforpeace@...il.com, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] UBI: Block: Add blk-mq support

On Sun, Nov 02, 2014 at 02:00:55PM +0100, Richard Weinberger wrote:
> +#define UBIBLOCK_SG_COUNT 64


Can you document why you choose this number? The default nr_request
for the old code would be 128.

Also I'll send a patch ASAP that allows drivers to ensure their
->queue_rq is always called from a driver-specific workqueue, which
should simplify the bui block driver a lot.
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