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Date: Wed, 25 Sep 2002 16:56:51 -0400
From: Luben Tuikov <luben@splentec.com>
Organization: Splentec Ltd.
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To: Jens Axboe <axboe@suse.de>
CC: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: struct page question
References: <3D90D4AB.B0BDF702@splentec.com> <20020925073430.GG15479@suse.de>
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Jens Axboe wrote:
> 
> > Apparently I cannot just set b_data and b_size, b_page
> > also has to be set and it also seems that it will
> > not work if page_address(b_page) != b_data...
> 
> bh->b_page = virt_to_page(va);
> bh->b_data = va;

Thanks Jens again.

My doubts are that va might not point to page->virtual,
but may point ``in the middle'' of the page, in which case
md will cough up since it does the page_address(b_page) != b_data
then BUG()...

I.e. I cannot guarantee about where va points (just that it is NOT
highmem).

-- 
Luben
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