From: "Stephen C. Tweedie" <sct@redhat.com>
To: Jeff Dike <jdike@karaya.com>
Cc: "Stephen C. Tweedie" <sct@redhat.com>,
lk@tantalophile.demon.co.uk, linux-mm@kvack.org
Subject: Re: madvise (MADV_FREE)
Date: Sat, 25 Mar 2000 00:30:44 +0000 [thread overview]
Message-ID: <20000325003044.F3693@redhat.com> (raw)
In-Reply-To: <200003241958.OAA03128@ccure.karaya.com>; from jdike@karaya.com on Fri, Mar 24, 2000 at 02:58:10PM -0500
Hi,
On Fri, Mar 24, 2000 at 02:58:10PM -0500, Jeff Dike wrote:
>
> Everything appears to work fine, so my conclusion (without delving into the
> i386 code too deeply) was that the upper kernel maintained them itself without
> any particular help from the hardware.
>
> Is this correct? Should I be dealing with the non-protection bits in the arch
> layer?
You probably should. It is impossible to do MAP_SHARED, PROT_WRITE
regions correctly without dirty bit support, and you don't get
efficient paging without accessed bit support.
--Stephen
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next prev parent reply other threads:[~2000-03-25 0:30 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20000320135939.A3390@pcep-jamie.cern.ch>
2000-03-20 19:09 ` MADV_SPACEAVAIL and MADV_FREE in pre2-3 Chuck Lever
2000-03-21 1:20 ` madvise (MADV_FREE) Jamie Lokier
2000-03-21 2:24 ` William J. Earl
2000-03-21 14:08 ` Jamie Lokier
2000-03-22 16:24 ` Chuck Lever
2000-03-22 18:05 ` Jamie Lokier
2000-03-22 21:39 ` Chuck Lever
2000-03-22 22:31 ` Jamie Lokier
2000-03-22 22:44 ` Stephen C. Tweedie
2000-03-23 18:53 ` Chuck Lever
2000-03-24 0:00 ` /dev/recycle Jamie Lokier
2000-03-24 9:14 ` /dev/recycle Christoph Rohland
2000-03-24 13:10 ` /dev/recycle Jamie Lokier
2000-03-24 13:54 ` /dev/recycle Christoph Rohland
2000-03-24 14:17 ` /dev/recycle Jamie Lokier
2000-03-24 17:40 ` /dev/recycle Christoph Rohland
2000-03-24 18:13 ` /dev/recycle Jamie Lokier
2000-03-25 8:35 ` /dev/recycle Christoph Rohland
2000-03-28 0:48 ` /dev/recycle Chuck Lever
2000-03-24 0:21 ` madvise (MADV_FREE) Jamie Lokier
2000-03-24 7:21 ` lars brinkhoff
2000-03-24 17:42 ` Jeff Dike
2000-03-24 16:49 ` Jamie Lokier
2000-03-24 17:08 ` Stephen C. Tweedie
2000-03-24 19:58 ` Jeff Dike
2000-03-25 0:30 ` Stephen C. Tweedie [this message]
2000-03-22 22:33 ` Stephen C. Tweedie
2000-03-22 22:45 ` Jamie Lokier
2000-03-22 22:48 ` Stephen C. Tweedie
2000-03-22 22:55 ` Q. about swap-cache orphans Jamie Lokier
2000-03-22 22:58 ` Stephen C. Tweedie
2000-03-22 18:15 ` madvise (MADV_FREE) Christoph Rohland
2000-03-22 18:30 ` Jamie Lokier
2000-03-23 16:56 ` Christoph Rohland
2000-03-21 1:29 ` MADV_DONTNEED Jamie Lokier
2000-03-22 17:04 ` MADV_DONTNEED Chuck Lever
2000-03-22 17:10 ` MADV_DONTNEED Stephen C. Tweedie
2000-03-22 17:32 ` MADV_DONTNEED Jamie Lokier
2000-03-22 17:33 ` MADV_DONTNEED Jamie Lokier
2000-03-22 17:37 ` MADV_DONTNEED Stephen C. Tweedie
2000-03-22 17:43 ` MADV_DONTNEED Jamie Lokier
2000-03-22 21:54 ` MADV_DONTNEED Chuck Lever
2000-03-22 22:41 ` MADV_DONTNEED Jamie Lokier
2000-03-23 19:13 ` MADV_DONTNEED James Antill
2000-03-21 1:47 ` Extensions to mincore Jamie Lokier
2000-03-21 9:11 ` Eric W. Biederman
2000-03-21 9:40 ` lars brinkhoff
2000-03-21 11:34 ` Stephen C. Tweedie
2000-03-21 15:15 ` Jamie Lokier
2000-03-21 15:41 ` Stephen C. Tweedie
2000-03-21 15:55 ` Jamie Lokier
2000-03-21 16:08 ` Stephen C. Tweedie
2000-03-21 16:48 ` Jamie Lokier
2000-03-22 7:36 ` Eric W. Biederman
2000-03-21 1:50 ` MADV flags as mmap options Jamie Lokier
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