linux-kernel - Re: [PATCH 3/6] direct-io: do not merge logically non-contiguous requests

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Message-ID: <20100521153538.GA1695@infradead.org>
Date:	Fri, 21 May 2010 11:35:38 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Josef Bacik <josef@...hat.com>
Cc:	Christoph Hellwig <hch@...radead.org>, linux-btrfs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 3/6] direct-io: do not merge logically non-contiguous
	requests

On Fri, May 21, 2010 at 11:37:45AM -0400, Josef Bacik wrote:
> So after I sent this I thought that maybe I could make that test _only_ if we
> provide submit_bio, that way it only affects btrfs and not everybody else, would
> you prefer I do something like that?  I will make the commit log a bit more
> verbose.  Thanks,

Again, I think it's not really worth optimizing for.  Just document very
clearly why it's there.

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