From: Neil Conway <nconway.list@ukaea.org.uk>
To: James Simmons <jsimmons@edgeglobal.com>
Cc: "Stephen C. Tweedie" <sct@redhat.com>, linux-mm@kvack.org
Subject: Re: mm->mmap_sem
Date: Mon, 27 Sep 1999 09:08:31 +0100 [thread overview]
Message-ID: <99Sep27.090733bst.66305@gateway.ukaea.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.10.9909241040460.12262-100000@imperial.edgeglobal.com>
James Simmons wrote:
>
> I obtained this idea from do_page_fault. This function is called from a
> interrupt when a process actually tries to access memory correct? Even if
> the page does or doesn't exist?
That's the bit that's tripping you up then. No page-fault will occur in
general if the page has already been used and hasn't been swapped out
etc. How bad would performance be if every access to every page caused
an interrupt?
Neil
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prev parent reply other threads:[~1999-09-27 8:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-09-22 21:02 mm->mmap_sem James Simmons
1999-09-24 0:07 ` mm->mmap_sem Stephen C. Tweedie
1999-09-24 14:59 ` mm->mmap_sem James Simmons
1999-09-24 18:09 ` mm->mmap_sem Stephen C. Tweedie
1999-09-25 1:24 ` mm->mmap_sem James Simmons
1999-09-25 14:55 ` mm->mmap_sem Andrea Arcangeli
1999-09-25 16:50 ` mm->mmap_sem James Simmons
1999-09-25 17:06 ` mm->mmap_sem Andrea Arcangeli
1999-09-26 1:19 ` mm->mmap_sem James Simmons
1999-09-26 14:07 ` mm->mmap_sem Andrea Arcangeli
1999-09-27 8:55 ` mm->mmap_sem Marcus Sundberg
1999-09-27 19:31 ` mm->mmap_sem James Simmons
1999-09-29 23:00 ` mm->mmap_sem Stephen C. Tweedie
1999-09-30 0:17 ` mm->mmap_sem James Simmons
1999-09-30 0:23 ` mm->mmap_sem Benjamin C.R. LaHaise
1999-09-30 14:59 ` mm->mmap_sem James Simmons
1999-09-30 15:15 ` mm->mmap_sem Benjamin C.R. LaHaise
1999-09-30 16:05 ` mm->mmap_sem James Simmons
1999-09-30 14:54 ` mm->mmap_sem Stephen C. Tweedie
1999-09-27 14:16 ` mm->mmap_sem Stephen C. Tweedie
1999-09-27 20:22 ` mm->mmap_sem James Simmons
1999-09-27 14:13 ` mm->mmap_sem Stephen C. Tweedie
1999-09-27 8:08 ` Neil Conway [this message]
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