From: Andrea Arcangeli <andrea@suse.de>
To: "Stephen C. Tweedie" <sct@redhat.com>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Rik van Riel <riel@nl.linux.org>, Ingo Molnar <mingo@redhat.com>,
linux-mm@kvack.org
Subject: Re: PATCH [2.4.0test10]: Kiobuf#02, fault-in fix
Date: Mon, 6 Nov 2000 17:12:04 +0100 [thread overview]
Message-ID: <20001106171204.B22626@athlon.random> (raw)
In-Reply-To: <20001106150539.A19112@redhat.com>; from sct@redhat.com on Mon, Nov 06, 2000 at 03:05:39PM +0000
On Mon, Nov 06, 2000 at 03:05:39PM +0000, Stephen C. Tweedie wrote:
> Why?
I think to avoid losing a write.
handle_mm_fault()
pte is dirty
pager write it out and make it clean
since it's not pinned on the
physical side yet so it's allowed
grab pagetable lock
follow_page()
pte is writeable but not dirty
pin the page on the physical side to inibith the swapper
unlock the pagetable lock
read from disk and write to memory
now the pte is clean and the page won't be synced back while
closing the file or during msync
Andrea
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next prev parent reply other threads:[~2000-11-06 16:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-02 13:40 Stephen C. Tweedie
2000-11-02 14:30 ` Jeff Garzik
2000-11-02 15:58 ` Stephen C. Tweedie
2000-11-04 1:28 ` Eric Lowe
2000-11-03 22:27 ` Andrea Arcangeli
2000-11-04 1:36 ` Eric Lowe
2000-11-04 2:07 ` Andrea Arcangeli
2000-11-06 15:05 ` Stephen C. Tweedie
2000-11-06 16:12 ` Andrea Arcangeli [this message]
2000-11-06 16:54 ` Stephen C. Tweedie
2000-11-06 22:34 ` Andrea Arcangeli
2000-11-07 11:17 ` Stephen C. Tweedie
2000-11-06 17:23 ` Linus Torvalds
2000-11-07 11:57 ` Stephen C. Tweedie
2000-11-07 13:37 ` Andrea Arcangeli
2000-11-08 12:31 ` Stephen C. Tweedie
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