From: Jens Axboe <axboe@suse.de>
To: "David S. Miller" <davem@redhat.com>
Cc: linux-kernel@vger.kernel.org, akpm@digeo.com
Subject: Re: [patch][cft] zero-copy dma cd writing and ripping
Date: Mon, 28 Oct 2002 15:55:33 +0100 [thread overview]
Message-ID: <20021028145533.GD2937@suse.de> (raw)
In-Reply-To: <1035816048.8970.1.camel@rth.ninka.net>
On Mon, Oct 28 2002, David S. Miller wrote:
> On Mon, 2002-10-28 at 04:42, Jens Axboe wrote:
> > > This work reminds me that get_user_pages() (or it's callers)
> > > need to be doing some flush_dcache_page()
> >
> > Was wondering about that. Can you tell me what it needs? And what about
> > bio_unmap_user(), surely that needs to flush cache as well for reads?
>
> Documentation/cachetlb.txt describes where flush_dcache_page is needed.
> If that doesn't describe it enough for you, that is a bug and please
> tell me what part is confusing so I may make the document better.
Didn't know about that document, will read it first.
--
Jens Axboe
next prev parent reply other threads:[~2002-10-28 14:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-18 15:56 [patch][cft] zero-copy dma cd writing and ripping Jens Axboe
2002-10-28 12:35 ` David S. Miller
2002-10-28 12:42 ` Jens Axboe
2002-10-28 14:40 ` David S. Miller
2002-10-28 14:55 ` Jens Axboe [this message]
2002-10-28 15:08 ` Jens Axboe
2002-10-28 16:03 ` David S. Miller
2002-10-28 15:54 ` Jens Axboe
2002-10-28 16:25 ` David S. Miller
2002-10-28 16:18 ` Jens Axboe
2002-10-29 2:27 ` David S. Miller
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