From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Lameter <clameter@sgi.com>
Subject: Re: [11/36] Use page_cache_xxx in fs/buffer.c
Date: Thu, 30 Aug 2007 11:14:39 -0700 (PDT)
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References: <20070828190551.415127746@sgi.com> <20070828190730.220393749@sgi.com>
 <20070830092038.GD22586@dnb.sw.ru>
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Cc: torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	Mel Gorman <mel@skynet.ie>,
	William Lee Irwin III <wli@holomorphy.com>,
	David Chinner <dgc@sgi.com>,
	Jens Axboe <jens.axboe@oracle.com>,
	Badari Pulavarty <pbadari@gmail.com>,
	Maxim Levitsky <maximlevitsky@gmail.com>,
	Fengguang Wu <fengguang.wu@gmail.com>,
	swin wang <wangswin@gmail.com>, totty.lu@gmail.com,
	"H. Peter Anvin" <hpa@zytor.com>, joern@lazybastard.org,
	"Eric W. Biederman" <ebiederm@xmission.com>
To: Dmitry Monakhov <dmonakhov@sw.ru>
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On Thu, 30 Aug 2007, Dmitry Monakhov wrote:

> On 12:06 Tue 28 Aug     , clameter@sgi.com wrote:
> > Use page_cache_xxx in fs/buffer.c.
> submit_bh wasn't changed this means what bio pages may have huge size
> without respect to queue reqsrictions (q->max_hw_segments, and etc)
> At least driver/md/raid0 will be broken by you'r patch.

Hmmm... So we need to check the page size and generate multiple requests 
in submit_bh?