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Date: Wed, 10 Dec 2008 10:43:07 +1000 From: "Dave Airlie" <airlied@...il.com> To: "Linus Torvalds" <torvalds@...ux-foundation.org> Cc: "Greg KH" <gregkh@...e.de>, linux-kernel@...r.kernel.org, stable@...nel.org, "Justin Forbes" <jmforbes@...uxtx.org>, "Zwane Mwaikambo" <zwane@....linux.org.uk>, "Theodore Ts'o" <tytso@....edu>, "Randy Dunlap" <rdunlap@...otime.net>, "Dave Jones" <davej@...hat.com>, "Chuck Wolber" <chuckw@...ntumlinux.com>, "Chris Wedgwood" <reviews@...cw.f00f.org>, "Michael Krufky" <mkrufky@...uxtv.org>, "Chuck Ebbert" <cebbert@...hat.com>, "Domenico Andreoli" <cavokz@...il.com>, "Willy Tarreau" <w@....eu>, "Rodrigo Rubira Branco" <rbranco@...checkpoint.com>, "Jake Edge" <jake@....net>, "Eugene Teo" <eteo@...hat.com>, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, "Manfred Spraul" <manfred@...orfullife.com>, "Clement Calmels" <cboulte@...il.com>, "Nadia Derbey" <Nadia.Derbey@...l.net>, "Pierre Peiffer" <peifferp@...il.com> Subject: Re: [patch 021/104] lib/idr.c: fix rcu related race with idr_find On Wed, Dec 10, 2008 at 8:47 AM, Linus Torvalds <torvalds@...ux-foundation.org> wrote: > > > On Wed, 10 Dec 2008, Dave Airlie wrote: >> >> On Thu, Dec 4, 2008 at 5:49 AM, Greg KH <gregkh@...e.de> wrote: >> > 2.6.27-stable review patch. If anyone has any objections, please let us know. >> > >> Revert. >> >> This caused problems in the F10 kernel with idr, the drm device alloc >> went all wierd, >> it might be a drm bug but changing this code triggers it and so it >> isn't really "stable" > > Well, maybe it should be reverted in mainlne too, then? It appears idr_replace is broken at least in stable with this patch. I'm trying to track down where the problem is (idr_replace doesn't look like idr_find in a lot of places and I wonder if this has ever been tested.) Dave. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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