From: "Paul Albrecht" <palbrecht@uswest.net>
To: "Rik van Riel" <riel@surriel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.4 vm, program load, page faulting, ...
Date: Mon, 17 Mar 2003 23:43:24 -0800 [thread overview]
Message-ID: <002801c2ed22$0f7fcd20$a3ba0243@oemcomputer> (raw)
In-Reply-To: Pine.LNX.4.44.0303171001030.2571-100000@chimarrao.boston.redhat.com
On Monday, March 17, 2003 Rik van Riel wrote:
>
> The mmap() syscall only sets up the VMA info, it doesn't fill in the page
tables. That only happens when the process page faults.
>
> Note that filling in a bunch of page table entries mapping already present
pagecache pages at exec() time might be a good idea. It's just that nobody
has gotten around to that yet...
>
What doesn't make sense to me is that a program's working set isn't loaded
before it starts execution. Can the working set be approximated using the
address_space object? Then the kernel would know what pages should be
allocated when the text and data segments are memory mapped in binary load.
prev parent reply other threads:[~2003-03-18 5:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-16 4:59 2.4 vm, program load, page faulting, Paul Albrecht
2003-03-17 15:02 ` Rik van Riel
2003-03-17 15:10 ` William Lee Irwin III
2003-03-17 16:01 ` Rik van Riel
2003-03-17 16:52 ` wind
2003-03-17 16:50 ` Alex Tomas
2003-03-17 17:12 ` wind-lkml
2003-03-17 17:38 ` wind-lkml
2003-03-17 18:57 ` Marc-Christian Petersen
2003-03-17 19:06 ` wind-lkml
2003-03-17 19:34 ` wind
2003-03-17 22:05 ` Andrew Morton
2003-03-17 23:08 ` wind
2003-03-17 23:28 ` Andrew Morton
2003-03-18 0:12 ` wind
2003-03-17 16:37 ` Alex Tomas
2003-03-18 7:43 ` Paul Albrecht [this message]
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