From mboxrd@z Thu Jan  1 00:00:00 1970
From: Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: Re: 2.6.29-rc8-git5: Reported regressions from 2.6.28
Date: Mon, 23 Mar 2009 09:23:47 -0700 (PDT)
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To: Wu Fengguang <fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>, "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Adrian Bunk <bunk-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Natalie Protasevich <protasnb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Kernel Testers List <kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Network Development <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Linux ACPI <linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Linux PM List <linux-pm-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>, Linux SCSI List <linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Nick Piggin <npiggin-l3A5Bk7waGM@public.gmane.org>, Peter Zijlstra <a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>
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On Mon, 23 Mar 2009, Wu Fengguang wrote:
> > 
> > I think this was tracked back to the effective halving of 
> > dirty_ratio by 1cf6e7d83 ("mm: task dirty accounting fix") and 
> > doubling the ratio fixed the iozone regression.
> 
> Yes, exactly. The patch for fixing this regression is trivial.

I was planning on applying that patch only after 2.6.29 is out, and then 
if there are no surprising side effects and nobody complains, we'd then 
back-port it into stable.

		Linus