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Date: Tue, 2 Feb 2010 21:58:57 +0100
From: Borislav Petkov <petkovbb@...glemail.com>
To: "Rafael J. Wysocki" <rjw@...k.pl>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Kernel Testers List <kernel-testers@...r.kernel.org>,
DRI <dri-devel@...ts.sourceforge.net>,
"Eric W. Biederman" <ebiederm@...stanetworks.com>,
Greg KH <greg@...ah.com>
Subject: Re: [Bug #14949] drm_vm.c:drm_mmap: possible circular locking
dependency detected
(Adding Greg to Cc:)
On Tue, Feb 02, 2010 at 09:46:45PM +0100, Rafael J. Wysocki wrote:
> On Monday 01 February 2010, Borislav Petkov wrote:
> > On Mon, Feb 1, 2010 at 1:22 AM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > >
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.32. Please verify if it still should be listed and let me know
> > > (either way).
> > >
> > >
> > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=14949
> > > Subject : drm_vm.c:drm_mmap: possible circular locking dependency detected
> > > Submitter : Borislav Petkov <petkovbb@...glemail.com>
> > > Date : 2009-12-26 9:45 (37 days old)
> > > References : http://marc.info/?l=linux-kernel&m=126182073616279&w=4
> > > Handled-By : Eric W. Biederman <ebiederm@...stanetworks.com>
> > > Patch : http://patchwork.kernel.org/patch/70461/
> >
> > Yes, this is fixed.
>
> Do you mean "fixed" as "the fix is in the Linus' tree" or "fixed" as "the
> patch fixed it for me"?
Rather the second one, i.e. it fixes it for me. The patch is named
sysfs-cache-the-last-sysfs_dirent-to-improve-readdir-scalability-v2.patch
and is "stuck" in Greg's tree. Judging by the quilt seriesĀ¹, the patch
is slated for submission after 2.6.33. This late in the game for .32,
I'm guessing maybe a stable backport after .33 is out?
[1] http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/series
--
Regards/Gruss,
Boris.
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