From: Andrea Arcangeli <andrea@suse.de>
To: Andrew Morton <akpm@digeo.com>
Cc: mbligh@aracnet.com, mingo@elte.hu, hugh@veritas.com,
dmccr@us.ibm.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: objrmap and vmtruncate
Date: Sun, 6 Apr 2003 16:47:34 +0200 [thread overview]
Message-ID: <20030406144734.GN1326@dualathlon.random> (raw)
In-Reply-To: <20030405175824.316efe90.akpm@digeo.com>
On Sat, Apr 05, 2003 at 05:58:24PM -0800, Andrew Morton wrote:
> Andrea Arcangeli <andrea@suse.de> wrote:
> >
> > Esepcially those sigbus in the current api
> > would be more expensive than the regular paging internal to the VM and
> > besides the signal it would generate flood of syscalls and kind of
> > duplication of memory management inside the userspace.
>
> That went away. We now encode the file offset in the unmapped ptes, so the
> kernel's fault handler can transparently reestablish the page.
if you put the file offset in the pte, you will break the max file
offset that you can map, that at least should be recoded with a cookie
like we do with the swap space
Andrea
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next prev parent reply other threads:[~2003-04-06 14:47 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-04 14:34 Hugh Dickins
2003-04-04 16:14 ` William Lee Irwin III
2003-04-04 16:29 ` Hugh Dickins
2003-04-04 18:54 ` Andrew Morton
2003-04-04 21:43 ` Hugh Dickins
2003-04-04 21:45 ` Andrea Arcangeli
2003-04-04 21:58 ` Benjamin LaHaise
2003-04-04 23:07 ` Andrew Morton
2003-04-05 0:03 ` Andrea Arcangeli
2003-04-05 0:31 ` Andrew Morton
2003-04-05 1:31 ` Andrea Arcangeli
2003-04-05 1:52 ` Benjamin LaHaise
2003-04-05 2:22 ` Andrea Arcangeli
2003-04-05 10:01 ` Jamie Lokier
2003-04-05 10:11 ` William Lee Irwin III
2003-04-05 2:06 ` Andrew Morton
2003-04-05 2:24 ` Andrea Arcangeli
2003-04-05 2:13 ` Martin J. Bligh
2003-04-05 2:44 ` Andrea Arcangeli
2003-04-05 3:24 ` Andrew Morton
2003-04-05 12:06 ` Andrew Morton
2003-04-05 15:11 ` Martin J. Bligh
[not found] ` <20030405161758.1ee19bfa.akpm@digeo.com>
2003-04-06 0:17 ` Andrew Morton
2003-04-06 7:07 ` William Lee Irwin III
2003-04-05 16:30 ` Andrea Arcangeli
2003-04-05 19:01 ` Andrea Arcangeli
2003-04-05 20:14 ` Andrew Morton
2003-04-05 21:24 ` Andrew Morton
2003-04-05 22:06 ` Andrea Arcangeli
2003-04-05 22:31 ` Andrew Morton
2003-04-05 23:10 ` Andrea Arcangeli
2003-04-06 1:58 ` Andrew Morton
2003-04-06 14:47 ` Andrea Arcangeli [this message]
2003-04-06 21:35 ` William Lee Irwin III
2003-04-06 7:38 ` William Lee Irwin III
2003-04-06 14:51 ` Andrea Arcangeli
2003-04-06 12:37 ` Jamie Lokier
2003-04-06 13:12 ` William Lee Irwin III
2003-04-22 11:00 ` Ingo Molnar
2003-04-22 11:54 ` William Lee Irwin III
2003-04-22 14:31 ` Ingo Molnar
2003-04-22 14:56 ` William Lee Irwin III
2003-04-22 15:26 ` Ingo Molnar
2003-04-22 16:20 ` William Lee Irwin III
2003-04-22 16:57 ` Andrea Arcangeli
2003-04-22 17:21 ` William Lee Irwin III
2003-04-22 18:08 ` Andrea Arcangeli
2003-04-22 17:34 ` Ingo Molnar
2003-04-22 18:04 ` Benjamin LaHaise
2003-04-22 16:58 ` Martin J. Bligh
2003-04-22 12:37 ` Andrea Arcangeli
2003-04-22 13:20 ` William Lee Irwin III
2003-04-22 14:38 ` Martin J. Bligh
2003-04-22 15:10 ` William Lee Irwin III
2003-04-22 15:53 ` Martin J. Bligh
2003-04-22 14:52 ` Andrea Arcangeli
2003-04-22 14:29 ` Martin J. Bligh
2003-04-22 15:07 ` Ingo Molnar
2003-04-22 15:42 ` William Lee Irwin III
2003-04-22 15:55 ` Ingo Molnar
2003-04-22 16:58 ` William Lee Irwin III
2003-04-22 17:07 ` Ingo Molnar
2003-04-22 15:16 ` Andrea Arcangeli
2003-04-22 15:49 ` Ingo Molnar
2003-04-22 16:16 ` Martin J. Bligh
2003-04-22 17:24 ` Ingo Molnar
2003-04-22 17:45 ` John Bradford
2003-04-22 14:32 ` Martin J. Bligh
2003-04-22 15:09 ` Ingo Molnar
2003-04-05 21:34 ` Rik van Riel
2003-04-06 9:29 ` Benjamin LaHaise
2003-04-05 23:25 ` William Lee Irwin III
2003-04-05 23:57 ` Andrew Morton
2003-04-06 0:14 ` Andrea Arcangeli
2003-04-06 1:39 ` Andrew Morton
2003-04-06 2:13 ` William Lee Irwin III
2003-04-06 9:26 ` Benjamin LaHaise
2003-04-06 9:41 ` William Lee Irwin III
2003-04-06 9:54 ` William Lee Irwin III
2003-04-06 2:23 ` Martin J. Bligh
2003-04-06 3:55 ` Andrew Morton
2003-04-06 3:08 ` Martin J. Bligh
2003-04-06 7:42 ` William Lee Irwin III
2003-04-06 14:49 ` Alan Cox
2003-04-06 16:13 ` Martin J. Bligh
2003-04-06 21:34 ` subobj-rmap Martin J. Bligh
2003-04-06 21:42 ` subobj-rmap Rik van Riel
2003-04-06 21:55 ` subobj-rmap Jamie Lokier
2003-04-06 22:39 ` subobj-rmap William Lee Irwin III
2003-04-06 22:03 ` subobj-rmap Martin J. Bligh
2003-04-06 22:06 ` subobj-rmap Martin J. Bligh
2003-04-06 22:15 ` subobj-rmap Andrea Arcangeli
2003-04-06 22:25 ` subobj-rmap Martin J. Bligh
2003-04-07 21:25 ` subobj-rmap Andrea Arcangeli
2003-04-06 23:06 ` subobj-rmap Jamie Lokier
2003-04-06 23:26 ` subobj-rmap Martin J. Bligh
2003-04-05 3:45 ` objrmap and vmtruncate Martin J. Bligh
2003-04-05 3:59 ` Rik van Riel
2003-04-05 4:10 ` William Lee Irwin III
2003-04-05 4:49 ` Martin J. Bligh
2003-04-05 13:31 ` Rik van Riel
2003-04-05 4:52 ` Martin J. Bligh
2003-04-05 3:22 ` Andrew Morton
2003-04-05 3:35 ` Martin J. Bligh
2003-04-05 3:53 ` Rik van Riel
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