Subject: Re: can device drivers return non-ram via vm_ops->nopage?
From: David Woodhouse <dwmw2@infradead.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: William Lee Irwin III <wli@holomorphy.com>, rmk@arm.linux.org.uk,
       Andrew Morton <akpm@osdl.org>, Andrea Arcangeli <andrea@suse.de>,
       linux-kernel@vger.kernel.org, torvalds@osdl.org
In-Reply-To: <20040321204931.A11519@infradead.org>
References: <20040320133025.GH9009@dualathlon.random>
	 <20040320144022.GC2045@holomorphy.com>
	 <20040320150621.GO9009@dualathlon.random>
	 <20040320121345.2a80e6a0.akpm@osdl.org>
	 <20040320205053.GJ2045@holomorphy.com>
	 <20040320222639.K6726@flint.arm.linux.org.uk>
	 <20040320224500.GP2045@holomorphy.com>
	 <1079901914.17681.317.camel@imladris.demon.co.uk>
	 <20040321204931.A11519@infradead.org>
Content-Type: text/plain
Message-Id: <1079902670.17681.324.camel@imladris.demon.co.uk>
Mime-Version: 1.0
Date: Sun, 21 Mar 2004 20:57:50 +0000
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 532
Lines: 15

On Sun, 2004-03-21 at 20:49 +0000, Christoph Hellwig wrote:
> And what exactly is a PFN without associated struct page supposed to mean?

It's something you can put into a PTE, and that's about it. Which unless
I'm misunderstanding ALSA/rmk's requirements, should be enough.

-- 
dwmw2


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/