From: Andrey Savochkin <saw@saw.sw.com.sg>
To: Hugh Dickins <hugh@veritas.com>
Cc: Mark Hemment <markhe@veritas.com>,
MM mailing list <linux-mm@kvack.org>,
linux-kernel@vger.kernel.org
Subject: Re: the new VMt
Date: Thu, 28 Sep 2000 11:25:16 +0800 [thread overview]
Message-ID: <20000928112516.C16833@saw.sw.com.sg> (raw)
In-Reply-To: <Pine.LNX.4.21.0009271338220.1006-100000@localhost.localdomain>; from "Hugh Dickins" on Wed, Sep 27, 2000 at 01:55:52PM
Hello,
On Wed, Sep 27, 2000 at 01:55:52PM +0100, Hugh Dickins wrote:
> On Wed, 27 Sep 2000, Andrey Savochkin wrote:
> >
> > It's a waste of resources to reserve memory+swap for the case that every
> > running process decides to modify libc code (and, thus, should receive its
> > private copy of the pages). A real waste!
>
> A real waste indeed, but a bad example: libc code is mapped read-only,
> so nobody would recommend reserving memory+swap for private mods to it.
> Of course, a process might choose to mprotect it writable at some time,
> that would be when to refuse if overcommitted.
Returning error from mprotect() call for private mappings?
It wouldn't be what people expect...
The other example where overcommit makes sense is fork() (not vfork) and
immediate exec in one of the threads.
Best regards
Andrey
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next prev parent reply other threads:[~2000-09-28 3:25 UTC|newest]
Thread overview: 243+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-24 10:11 __GFP_IO && shrink_[d|i]cache_memory()? Ingo Molnar
2000-09-24 18:11 ` Linus Torvalds
2000-09-24 18:40 ` Ingo Molnar
2000-09-24 18:39 ` Linus Torvalds
2000-09-24 18:46 ` Linus Torvalds
2000-09-24 18:59 ` Ingo Molnar
2000-09-24 19:34 ` [patch] vmfixes-2.4.0-test9-B2 Ingo Molnar
2000-09-24 20:20 ` Rui Sousa
2000-09-24 20:24 ` Andrea Arcangeli
2000-09-24 20:26 ` Ingo Molnar
2000-09-24 21:12 ` Andrea Arcangeli
2000-09-24 21:12 ` Ingo Molnar
2000-09-24 21:43 ` Stephen C. Tweedie
2000-09-24 22:13 ` Andrea Arcangeli
2000-09-24 22:36 ` [patch] vmfixes-2.4.0-test9-B2 - fixing deadlocks bert hubert
2000-09-24 23:41 ` Andrea Arcangeli
2000-09-25 16:24 ` Stephen C. Tweedie
2000-09-25 17:03 ` Andrea Arcangeli
2000-09-25 18:06 ` Stephen C. Tweedie
2000-09-25 19:32 ` Andrea Arcangeli
2000-09-25 19:26 ` Rik van Riel
2000-09-25 22:28 ` Andrea Arcangeli
2000-09-25 22:26 ` Rik van Riel
2000-09-25 22:51 ` Andrea Arcangeli
2000-09-25 22:30 ` Linus Torvalds
2000-09-25 23:03 ` Andrea Arcangeli
2000-09-25 23:18 ` Linus Torvalds
2000-09-26 0:32 ` Andrea Arcangeli
2000-09-25 22:30 ` Juan J. Quintela
2000-09-25 23:00 ` Andrea Arcangeli
2000-09-25 19:54 ` Stephen C. Tweedie
2000-09-25 22:44 ` Andrea Arcangeli
2000-09-25 22:42 ` Rik van Riel
2000-09-26 6:54 ` Christoph Rohland
2000-09-26 14:05 ` Andrea Arcangeli
2000-09-26 16:20 ` Christoph Rohland
2000-09-26 17:10 ` Andrea Arcangeli
2000-09-27 8:11 ` Christoph Rohland
2000-09-27 8:28 ` Ingo Molnar
2000-09-27 9:24 ` Christoph Rohland
2000-09-27 13:56 ` Andrea Arcangeli
2000-09-27 16:56 ` Christoph Rohland
2000-09-27 17:42 ` Andrea Arcangeli
2000-09-27 18:25 ` Erik Andersen
2000-09-27 18:55 ` Andrea Arcangeli
2000-09-28 10:08 ` Rik van Riel
2000-09-28 11:16 ` Rik van Riel
2000-09-28 14:52 ` Andrea Arcangeli
2000-09-29 14:39 ` Rik van Riel
2000-09-29 14:55 ` Andrea Arcangeli
2000-09-29 15:40 ` Rik van Riel
2000-09-28 11:31 ` Ingo Molnar
2000-09-28 14:54 ` Andrea Arcangeli
2000-09-28 15:13 ` Ingo Molnar
2000-09-28 15:23 ` Andrea Arcangeli
2000-09-28 16:16 ` Juan J. Quintela
2000-09-28 14:31 ` Andrea Arcangeli
2000-09-25 17:21 ` bert hubert
2000-09-25 17:49 ` Andrea Arcangeli
2000-09-25 15:09 ` Miles Lane
2000-09-25 15:51 ` Stephen C. Tweedie
2000-09-25 16:05 ` Ingo Molnar
2000-09-25 16:06 ` Alexander Viro
2000-09-25 16:20 ` Ingo Molnar
2000-09-25 16:29 ` Andrea Arcangeli
2000-09-25 4:56 ` [patch] vmfixes-2.4.0-test9-B2 Linus Torvalds
2000-09-25 5:19 ` Alexander Viro
2000-09-25 6:06 ` Linus Torvalds
2000-09-25 6:17 ` Alexander Viro
2000-09-25 21:21 ` Alexander Viro
2000-09-26 13:42 ` [CFT][PATCH] ext2 directories in pagecache Alexander Viro
2000-09-26 21:29 ` Alexander Viro
2000-09-26 22:16 ` Marko Kreen
2000-09-26 22:31 ` Alexander Viro
2000-09-26 22:47 ` Marko Kreen
2000-09-27 7:32 ` Ingo Molnar
2000-09-27 9:22 ` Alexander Viro
2000-09-26 23:19 ` Andreas Dilger
2000-09-26 23:33 ` Alexander Viro
2000-09-26 23:44 ` Alexander Viro
2000-09-25 0:09 ` [patch] vmfixes-2.4.0-test9-B2 Linus Torvalds
2000-09-25 0:49 ` Alexander Viro
2000-09-25 0:53 ` Marcelo Tosatti
2000-09-25 1:45 ` Andrea Arcangeli
2000-09-25 2:39 ` Marcelo Tosatti
2000-09-25 15:36 ` Andrea Arcangeli
2000-09-25 10:42 ` the new VM Ingo Molnar
2000-09-25 13:02 ` Andrea Arcangeli
2000-09-25 13:02 ` Ingo Molnar
2000-09-25 13:08 ` Andrea Arcangeli
2000-09-25 13:12 ` Ingo Molnar
2000-09-25 13:30 ` Andrea Arcangeli
2000-09-25 13:39 ` Ingo Molnar
2000-09-25 14:04 ` Andrea Arcangeli
2000-09-25 14:04 ` Ingo Molnar
2000-09-25 14:23 ` Andrea Arcangeli
2000-09-25 14:27 ` Ingo Molnar
2000-09-25 14:39 ` Andrea Arcangeli
2000-09-25 14:43 ` Ingo Molnar
2000-09-25 15:01 ` Andrea Arcangeli
2000-09-25 15:10 ` Ingo Molnar
2000-09-25 15:24 ` Andrea Arcangeli
2000-09-25 15:26 ` Ingo Molnar
2000-09-25 15:22 ` yodaiken
2000-09-26 19:10 ` Pavel Machek
2000-09-26 20:16 ` Andrea Arcangeli
2000-09-27 7:42 ` Ingo Molnar
2000-09-27 12:11 ` yodaiken
2000-09-27 14:08 ` Andrea Arcangeli
2000-09-25 16:09 ` Rik van Riel
2000-09-25 14:26 ` Marcelo Tosatti
2000-09-25 14:50 ` Andrea Arcangeli
2000-09-25 14:47 ` Alan Cox
2000-09-25 15:16 ` Ingo Molnar
2000-09-25 15:16 ` the new VMt Alan Cox
2000-09-25 15:33 ` the new VM Ingo Molnar
2000-09-25 15:41 ` the new VMt Andrea Arcangeli
2000-09-25 16:02 ` Ingo Molnar
2000-09-25 16:04 ` Andi Kleen
2000-09-25 16:19 ` Ingo Molnar
2000-09-25 16:18 ` Andi Kleen
2000-09-25 16:41 ` Andrea Arcangeli
2000-09-25 16:35 ` Linus Torvalds
2000-09-25 16:41 ` Rik van Riel
2000-09-25 16:49 ` Linus Torvalds
2000-09-25 17:03 ` Ingo Molnar
2000-09-25 17:17 ` Andrea Arcangeli
2000-09-25 17:10 ` Rik van Riel
2000-09-25 17:27 ` Andrea Arcangeli
2000-09-25 17:15 ` Andrea Arcangeli
2000-09-27 7:14 ` Rusty Russell
2000-09-25 20:23 ` Russell King
2000-09-25 16:28 ` Rik van Riel
2000-09-25 16:11 ` Andrea Arcangeli
2000-09-25 16:22 ` Ingo Molnar
2000-09-25 16:17 ` Alexander Viro
2000-09-25 16:36 ` Jeff Garzik
2000-09-25 16:57 ` Alan Cox
2000-09-25 17:01 ` Alexander Viro
2000-09-25 17:06 ` Alan Cox
2000-09-25 17:31 ` Oliver Xymoron
2000-09-25 17:51 ` Jeff Garzik
2000-09-25 19:03 ` the new VMt [4MB+ blocks] Matti Aarnio
2000-09-25 20:02 ` Stephen Williams
2000-09-25 16:33 ` the new VMt Andrea Arcangeli
2000-09-26 8:38 ` Jes Sorensen
2000-09-26 8:52 ` Ingo Molnar
2000-09-26 9:02 ` Jes Sorensen
2000-09-25 16:53 ` Alan Cox
2000-09-25 15:42 ` Stephen C. Tweedie
2000-09-25 16:05 ` Andrea Arcangeli
2000-09-25 16:22 ` Rik van Riel
2000-09-25 16:42 ` Andrea Arcangeli
2000-09-25 17:39 ` Stephen C. Tweedie
2000-09-25 16:51 ` Alan Cox
2000-09-25 17:43 ` Stephen C. Tweedie
2000-09-25 18:13 ` Alan Cox
2000-09-25 18:21 ` Stephen C. Tweedie
2000-09-25 19:09 ` Alan Cox
2000-09-25 19:21 ` Stephen C. Tweedie
2000-09-25 16:52 ` yodaiken
2000-09-25 17:18 ` Jamie Lokier
2000-09-25 17:51 ` yodaiken
2000-09-25 18:04 ` Jamie Lokier
2000-09-25 18:13 ` yodaiken
2000-09-25 18:24 ` Stephen C. Tweedie
2000-09-25 18:34 ` yodaiken
2000-09-25 18:48 ` Jamie Lokier
2000-09-25 19:25 ` Stephen C. Tweedie
2000-09-25 20:04 ` yodaiken
2000-09-25 20:23 ` Alan Cox
2000-09-25 20:35 ` yodaiken
2000-09-25 20:46 ` Alan Cox
2000-09-25 21:07 ` yodaiken
2000-09-26 9:54 ` Stephen C. Tweedie
2000-09-26 13:17 ` yodaiken
2000-09-25 20:47 ` Benjamin C.R. LaHaise
2000-09-25 21:12 ` yodaiken
2000-09-26 10:07 ` Stephen C. Tweedie
2000-09-26 13:30 ` yodaiken
2000-09-25 20:32 ` Stephen C. Tweedie
2000-09-26 12:10 ` Mark Hemment
2000-09-27 10:13 ` Andrey Savochkin
2000-09-27 12:55 ` Hugh Dickins
2000-09-28 3:25 ` Andrey Savochkin [this message]
2000-09-25 23:14 ` Erik Andersen
2000-09-26 15:17 ` yodaiken
2000-09-26 16:04 ` Stephen C. Tweedie
2000-09-26 17:02 ` Erik Andersen
2000-09-26 17:08 ` Stephen C. Tweedie
2000-09-26 17:45 ` Erik Andersen
2000-09-27 10:20 ` Andrey Savochkin
2000-09-26 21:13 ` Eric Lowe
2000-09-25 18:20 ` Andrea Arcangeli
2000-09-25 16:16 ` Rik van Riel
2000-09-25 16:55 ` Alan Cox
2000-09-25 15:48 ` the new VM Andrea Arcangeli
2000-09-25 15:40 ` Stephen C. Tweedie
2000-09-25 16:01 ` Andrea Arcangeli
2000-09-25 14:37 ` Rik van Riel
2000-09-25 20:34 ` Christoph Rohland
2000-10-06 16:14 ` Rik van Riel
2000-10-09 7:37 ` Christoph Rohland
2000-09-25 13:04 ` Ingo Molnar
2000-09-25 13:19 ` Andrea Arcangeli
2000-09-25 13:18 ` Ingo Molnar
2000-09-25 13:21 ` Ingo Molnar
2000-09-25 13:31 ` Andrea Arcangeli
2000-09-25 13:47 ` Ingo Molnar
2000-09-25 14:04 ` Andrea Arcangeli
2000-09-25 1:31 ` [patch] vmfixes-2.4.0-test9-B2 Andrea Arcangeli
2000-09-25 1:27 ` Alexander Viro
2000-09-25 2:02 ` Andrea Arcangeli
2000-09-25 2:01 ` Alexander Viro
2000-09-25 13:47 ` Stephen C. Tweedie
2000-09-25 10:13 ` Ingo Molnar
2000-09-25 12:58 ` Andrea Arcangeli
2000-09-25 13:10 ` Ingo Molnar
2000-09-25 13:49 ` Jens Axboe
2000-09-25 14:11 ` Ingo Molnar
2000-09-25 14:05 ` Jens Axboe
2000-09-25 16:46 ` Linus Torvalds
2000-09-25 17:05 ` Ingo Molnar
2000-09-25 17:23 ` Andrea Arcangeli
2000-09-25 14:20 ` Andrea Arcangeli
2000-09-25 14:11 ` Jens Axboe
2000-09-25 14:33 ` Andrea Arcangeli
2000-09-25 13:56 ` Andrea Arcangeli
2000-09-25 13:57 ` Ingo Molnar
2000-09-25 14:13 ` Andrea Arcangeli
2000-09-25 14:08 ` Jens Axboe
2000-09-25 14:29 ` Andrea Arcangeli
2000-09-25 14:18 ` Jens Axboe
2000-09-25 14:47 ` Andrea Arcangeli
2000-09-25 21:28 ` Jens Axboe
2000-09-25 22:14 ` Andrea Arcangeli
2000-09-25 14:13 ` Ingo Molnar
2000-09-25 14:29 ` Ingo Molnar
2000-09-25 14:46 ` Andrea Arcangeli
2000-09-25 14:53 ` Ingo Molnar
2000-09-25 15:02 ` Andrea Arcangeli
2000-09-24 21:38 ` __GFP_IO && shrink_[d|i]cache_memory()? Stephen C. Tweedie
2000-09-24 23:20 ` Alan Cox
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