linux-kernel - Re: [PATCH 2/3] block: Move non-rotational flag to queue limits

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Message-ID: <yq1d3izx7v2.fsf@sermon.lab.mkp.net>
Date:	Tue, 31 May 2011 10:28:01 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Jens Axboe <jaxboe@...ionio.com>
Cc:	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Mike Snitzer <snitzer@...hat.com>,
	"msb\@chromium.org" <msb@...omium.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"dm-devel\@redhat.com" <dm-devel@...hat.com>
Subject: Re: [PATCH 2/3] block: Move non-rotational flag to queue limits

>>>>> "Jens" == Jens Axboe <jaxboe@...ionio.com> writes:

Jens> On 2011-05-31 04:19, Martin K. Petersen wrote:
>> - queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue);
>> + blk_queue_non_rotational(queue);

Jens> I don't like this part of the change. Before it was immediately
Jens> apparently that we were setting this flag, know you have no idea
Jens> what it does. Please make that blk_queue_set_non_rotational().

I was just trying to mimic the rest of the topology calls.

How about:

  blk_queue_rotational(q, BLK_QUEUE_ROTATIONAL|BLK_QUEUE_NON_ROTATIONAL)

Doing it that way would make the code clearer a few places too, I
think...

-- 
Martin K. Petersen	Oracle Linux Engineering
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