From: Andrew Morton <akpm@zip.com.au>
To: Daniel Phillips <phillips@bonn-fries.net>
Cc: Bill Davidsen <davidsen@tmr.com>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: [patch] sys_sync livelock fix
Date: Wed, 13 Feb 2002 16:53:04 -0800 [thread overview]
Message-ID: <3C6B0A70.D11DFC2A@zip.com.au> (raw)
In-Reply-To: <Pine.LNX.3.96.1020213170030.12448F-100000@gatekeeper.tmr.com> <E16b9jW-0002QL-00@starship.berlin> <3C6B06E5.F6A7AD9F@zip.com.au>, <3C6B06E5.F6A7AD9F@zip.com.au> <E16bA59-0002Qa-00@starship.berlin>
Daniel Phillips wrote:
>
> What's the theory behind writing the data both before and after the commit?
see fsync_dev(). It starts I/O against existing dirty data, then
does various fs-level syncy things which can produce more dirty
data - this is where ext3 runs its commit, via brilliant reverse
engineering of its calling context :-(. It then again starts I/O
against new dirty data then waits on it again. And then again.
There's quite a lot of overkill there. But that's OK, as long
as it terminates sometime.
-
next prev parent reply other threads:[~2002-02-14 0:54 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-12 23:13 [patch] sys_sync livelock fix Andrew Morton
2002-02-12 23:31 ` Alan Cox
2002-02-12 23:22 ` Andrew Morton
2002-02-13 0:28 ` Alan Cox
2002-02-13 3:28 ` Bill Davidsen
2002-02-13 3:46 ` Jeff Garzik
2002-02-13 15:11 ` Daniel Phillips
2002-02-13 22:24 ` Bill Davidsen
2002-02-13 22:41 ` Mike Fedyk
2002-02-14 0:26 ` Daniel Phillips
2002-02-14 0:37 ` Andrew Morton
2002-02-14 0:49 ` Daniel Phillips
2002-02-14 0:53 ` Andrew Morton [this message]
2002-02-14 1:27 ` Daniel Phillips
2002-02-14 1:29 ` Andrew Morton
2002-02-14 1:59 ` Mike Fedyk
2002-02-14 2:07 ` Daniel Phillips
2002-02-13 23:31 ` Rob Landley
2002-02-14 0:44 ` Daniel Phillips
2002-02-12 23:29 ` Rik van Riel
2002-02-13 0:25 ` Alan Cox
2002-02-13 0:15 ` Rik van Riel
2002-02-13 0:36 ` Alan Cox
2002-02-13 0:36 ` Rik van Riel
2002-02-13 0:39 ` Andrew Morton
2002-02-13 3:42 ` Bill Davidsen
2002-02-13 3:54 ` Bill Davidsen
2002-02-13 4:01 ` Jeff Garzik
2002-02-13 4:53 ` Bill Davidsen
2002-02-13 15:17 ` Daniel Phillips
2002-02-13 4:29 ` Andrew Morton
2002-02-13 5:21 ` Bill Davidsen
2002-02-13 5:35 ` Andrew Morton
2002-02-18 2:29 ` Bill Davidsen
2002-02-13 14:09 ` bill davidsen
2002-02-13 15:29 ` Daniel Phillips
2002-02-13 22:53 ` Bill Davidsen
2002-02-14 0:33 ` Daniel Phillips
2002-02-13 1:36 ` What is a livelock? (was: [patch] sys_sync livelock fix) Olaf Dietsche
2002-02-13 1:56 ` Andrew Morton
2002-02-13 2:30 ` Olaf Dietsche
2002-02-13 2:39 ` Andrew Morton
2002-02-13 16:19 ` Olaf Dietsche
2002-02-13 2:52 ` William Lee Irwin III
2002-02-18 22:19 ` David Schwartz
2002-02-13 2:33 ` Rob Landley
-- strict thread matches above, loose matches on Subject: below --
2002-02-13 9:18 [patch] sys_sync livelock fix Andries.Brouwer
2002-02-14 0:57 Andries.Brouwer
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