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Re: [regression] Crash in wb_clear_pending() (was: Linux 2.6.35-rc4)

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From: Christoph Hellwig
Subject: Re: [regression] Crash in wb_clear_pending() (was: Linux 2.6.35-rc4)
Date: Monday, July 5, 2010 - 11:20 am

On Mon, Jul 05, 2010 at 07:14:20PM +0200, Ingo Molnar wrote:

It's indeed missing the two previous patches to the writeback code that
I thought Jens sent to Linus aswell [1].  The race was initially found using
a distro kernel with the patches backported, and in the meantime we've
done a lot of testing with this patch (and the two previous that also
were backported).  I'd prefer to get this full stack that's been in
-next for a while and got large machine testing, but if Jens prefers it
I can aim for a smaller variant.  Jens, what version do you prefer?

[1] thee patches are:

 "writeback: remove writeback_inodes_wbc"	a73dd720f081cd160e3843d531eff2195036e442
 "writeback: split writeback_inodes_wb"		9f98c0faa41ae334d894762f556195c8a7fb352f
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Messages in current thread:
Linux 2.6.35-rc4, Linus Torvalds, (Sun Jul 4, 8:44 pm)
[regression] Crash in wb_clear_pending() (was: Linux 2.6.3 ..., Ingo Molnar, (Mon Jul 5, 1:55 am)
Re: Linux 2.6.35-rc4, Xiaotian Feng, (Mon Jul 5, 3:22 am)
Re: [regression] Crash in wb_clear_pending() (was: Linux 2 ..., Christoph Hellwig, (Mon Jul 5, 9:40 am)
Re: [regression] Crash in wb_clear_pending() (was: Linux 2 ..., Ingo Molnar, (Mon Jul 5, 10:11 am)
Re: [regression] Crash in wb_clear_pending() (was: Linux 2 ..., Ingo Molnar, (Mon Jul 5, 10:14 am)
Re: [regression] Crash in wb_clear_pending() (was: Linux 2 ..., Christoph Hellwig, (Mon Jul 5, 11:20 am)
Re: [regression] Crash in wb_clear_pending(), Jens Axboe, (Mon Jul 5, 12:24 pm)
Re: [regression] Crash in wb_clear_pending(), Christoph Hellwig, (Mon Jul 5, 12:32 pm)
Re: [regression] Crash in wb_clear_pending(), Jens Axboe, (Mon Jul 5, 12:45 pm)
Re: [regression] Crash in wb_clear_pending(), Bill Davidsen, (Mon Jul 5, 2:19 pm)
Re: Linux 2.6.35-rc4 - CONFIG_LOCALVERSION ignored?, Rafael J. Wysocki, (Mon Jul 5, 2:25 pm)
Re: [regression] Crash in wb_clear_pending(), Linus Torvalds, (Mon Jul 5, 4:34 pm)
Re: [regression] Crash in wb_clear_pending(), Jens Axboe, (Mon Jul 5, 11:25 pm)
Re: [regression] Crash in wb_clear_pending(), Ingo Molnar, (Mon Jul 5, 11:47 pm)
Re: [regression] Crash in wb_clear_pending(), Ingo Molnar, (Mon Jul 5, 11:49 pm)
Re: [regression] Crash in wb_clear_pending(), Jens Axboe, (Mon Jul 5, 11:50 pm)
Re: [regression] Crash in wb_clear_pending(), Ingo Molnar, (Mon Jul 5, 11:56 pm)
Re: [regression] Crash in wb_clear_pending(), Christoph Hellwig, (Tue Jul 6, 6:47 pm)
Yet another 2.6.35 regression (AGP)?, Woody Suwalski, (Fri Jul 9, 7:21 am)
Re: Yet another 2.6.35 regression (AGP)?, Jesse Barnes, (Fri Jul 9, 8:58 am)
Re: Yet another 2.6.35 regression (AGP)?, Woody Suwalski, (Fri Jul 9, 9:27 am)
Re: Yet another 2.6.35 regression (AGP)?, Jesse Barnes, (Fri Jul 9, 10:49 am)
Re: Linux 2.6.35-rc4, Linus Torvalds, (Fri Jul 9, 2:43 pm)
Re: Yet another 2.6.35 regression (AGP)?, Maciej Rutecki, (Mon Jul 12, 8:28 am)
Re: Linux 2.6.35-rc4 - CONFIG_LOCALVERSION ignored?, Benny Halevy, (Mon Jul 12, 9:58 am)
Re: Linux 2.6.35-rc4 - CONFIG_LOCALVERSION ignored?, Linus Torvalds, (Mon Jul 12, 10:20 am)
Re: Linux 2.6.35-rc4 - CONFIG_LOCALVERSION ignored?, Benny Halevy, (Mon Jul 12, 10:34 am)