lkml.org 
[lkml]   [2007]   [Apr]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] sysfs: use different lockdep subclass for s_active deactivation
On 4/26/07, Tejun Heo <htejun@gmail.com> wrote:
> Miles Lane wrote:
> > On 4/26/07, Tejun Heo <htejun@gmail.com> wrote:
> >> A sysfs node can delete other sysfs files when accessed. This results
> >> in recursive s_active locking - read lock for file access, down lock
> >> of the vicitim for deactivation. Tell lockdep that it's okay.
> >>
> >> Signed-off-by: Tejun Heo <htejun@gmail.com>
> >> ---
> >> Miles, please test this patch. It should remove the lockdep warning.
> >> Fixes for the other two problems will soon follow.
> >>
> >> Greg, Andrew, after all the fixes are verified, I'll merge the fixes
> >> into the original patches and resend all the sysfs updates in better
> >> shape. Sorry about all the trouble.
> >
> > Should I test this with 2.6.21-rc7-mm2?
> > It doesn't apply cleanly.
> >
> > # patch -p1 -l --dry-run < tejun.patch
> > patching file fs/sysfs/dir.c
> > Hunk #1 succeeded at 31 with fuzz 1 (offset -29 lines).
> > patching file fs/sysfs/sysfs.h
> > Hunk #1 succeeded at 40 (offset -1 lines).
> > Hunk #2 succeeded at 182 with fuzz 1 (offset -1 lines).
>
> It's in the middle of gregkh patch series but you can safely ignore the
> fuzzes.

WIth this patch applied to 2.6.21-rc7-mm2, I am not seeing any of the
problems I reported against 2.6.21-mm1, except for one. The first
time I tried to suspend from the Gnome Quit dialog, I heard the pop
associated with unloading the sound module, but all the buttons stayed
lit up until I touched the Synaptics mousepad. Then the machine
entered the suspend state. Subsequent attempts to suspend worked
without a hitch (no mousepad events required). Another problem I
noticed is that the lib switch is not triggering a suspend. I tried
repeatedly.

Thanks,
Miles
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-04-26 20:55    [W:0.083 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site