linux-ext4 - [Bug 29402] kernel panics while running ffsb scalability workloads on 2.6.38-rc1 through -rc5

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Message-Id: <201102260350.p1Q3oFmj002907@demeter1.kernel.org>
Date:	Sat, 26 Feb 2011 03:50:15 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 29402] kernel panics while running ffsb scalability workloads
 on 2.6.38-rc1 through -rc5

https://bugzilla.kernel.org/show_bug.cgi?id=29402

--- Comment #10 from Eric Whitney <eric.whitney@...com>  2011-02-26 03:50:09 ---
Created an attachment (id=49172)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=49172)
Possible fix - patch simplifies completion counting and avoids races

Hi Lukas:

This patch has successfully passed an initial round of tests which 2.6.38-rc*
kernels have never passed.  It seemed appropriate to simplify the way
outstanding completions were being accounted for to avoid the races, and the
code ought to be just a little more efficient on a SMP/NUMA box as well.  At
any rate, it's a stab at it - I'd appreciate any comments you might have.  I'll
put it through a weekend's worth of test runs next.

Thanks!
Eric

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