From: "Benjamin C.R. LaHaise" <blah@kvack.org>
To: David Woodhouse <dwmw2@infradead.org>
Cc: lord@sgi.com, linux-kernel@vger.rutgers.edu, linux-mm@kvack.org
Subject: Re: kmap_kiobuf()
Date: Wed, 28 Jun 2000 12:24:06 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.3.96.1000628121852.22084D-100000@kanga.kvack.org> (raw)
In-Reply-To: <13214.962208390@cygnus.co.uk>
On Wed, 28 Jun 2000, David Woodhouse wrote:
> MM is not exactly my field - I just know I want to be able to lock down a
> user's buffer and treat it as if it were in kernel-space, passing its
> address to functions which expect kernel buffers.
Then pass in a kiovec (we're planning on adding a rw_kiovec file op!) and
use kmap/kmap_atomic on individual pages as required. As to providing
larger kmaps, I have yet to be convinced that providing primatives for
dealing with objects larger than PAGE_SIZE is a Good Idea.
-ben
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next prev parent reply other threads:[~2000-06-28 16:24 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-06-28 15:54 kmap_kiobuf() lord
2000-06-28 16:06 ` kmap_kiobuf() David Woodhouse
2000-06-28 16:24 ` Benjamin C.R. LaHaise [this message]
2000-06-28 18:07 ` kmap_kiobuf() Stephen C. Tweedie
2000-06-28 18:45 ` kmap_kiobuf() David Woodhouse
2000-06-29 9:09 ` kmap_kiobuf() Stephen C. Tweedie
2000-06-28 17:46 ` kmap_kiobuf() Stephen C. Tweedie
-- strict thread matches above, loose matches on Subject: below --
2000-06-28 20:16 kmap_kiobuf() lord
2000-06-28 21:22 ` kmap_kiobuf() Benjamin C.R. LaHaise
2000-06-29 9:34 ` kmap_kiobuf() Stephen C. Tweedie
2000-06-29 13:45 ` kmap_kiobuf() Steve Lord
2000-06-28 16:52 kmap_kiobuf() lord
2000-06-28 18:06 ` kmap_kiobuf() Stephen C. Tweedie
2000-06-28 19:06 ` kmap_kiobuf() Manfred Spraul
2000-06-28 21:05 ` kmap_kiobuf() Andi Kleen
2000-06-28 15:41 kmap_kiobuf() David Woodhouse
2000-06-28 17:44 ` kmap_kiobuf() Stephen C. Tweedie
2000-06-29 10:52 ` kmap_kiobuf() Stephen C. Tweedie
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