From: Jens Axboe <axboe@suse.de>
To: Luben Tuikov <luben@splentec.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: struct page question
Date: Wed, 25 Sep 2002 09:34:30 +0200 [thread overview]
Message-ID: <20020925073430.GG15479@suse.de> (raw)
In-Reply-To: <3D90D4AB.B0BDF702@splentec.com>
On Tue, Sep 24 2002, Luben Tuikov wrote:
> Is it possible to build a struct page *page, where
> page_address(page) == some virtual address (not high mem of course)?
>
> The reason I want to do this is so that I can pass it to
> generic_make_request(), having only a pointer to a buffer
> and size to a buffer, and the fact that not all devices
> have request_fn() exposed (e.g. md).
>
> 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;
--
Jens Axboe
next prev parent reply other threads:[~2002-09-25 7:29 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 [this message]
2002-09-25 20:56 ` Luben Tuikov
2002-09-26 5:33 ` Jens Axboe
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