From: Luben Tuikov <luben@splentec.com>
To: Jens Axboe <axboe@suse.de>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: struct page question
Date: Wed, 25 Sep 2002 16:56:51 -0400 [thread overview]
Message-ID: <3D922313.24B59088@splentec.com> (raw)
In-Reply-To: 20020925073430.GG15479@suse.de
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
next prev parent reply other threads:[~2002-09-25 20:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-24 21:10 struct page question Luben Tuikov
2002-09-25 7:34 ` Jens Axboe
2002-09-25 20:56 ` Luben Tuikov [this message]
2002-09-26 5:33 ` Jens Axboe
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