Messages in this thread | | | Date | Wed, 4 May 2011 18:41:50 +0300 (EEST) | From | Pekka Enberg <> | Subject | Re: [block IO crash] Re: 2.6.39-rc5-git2 boot crashs |
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On Wed, 4 May 2011, Christoph Lameter wrote: > Subject: slub: Remove CONFIG_CMPXCHG_LOCAL ifdeffery > > Remove the #ifdefs. This means that the irqsafe_cpu_cmpxchg_double() is used > everywhere. > > There may be performance implications since: > > A. We now have to manage a transaction ID for all arches > > B. The interrupt holdoff for arches not supporting CONFIG_CMPXCHG_LOCAL is reduced > to a very short irqoff section. > > There are no multiple irqoff/irqon sequences as a result of this change. Even in the fallback > case we only have to do one disable and enable like before. > > Signed-off-by: Christoph Lameter <cl@linux.com>
This doesn't apply cleanly on top of slab/next which has some of your cleanup patches applied. There's some CONFIG_PREEMPT conflicts so I'd rather you rediffed it yourself.
Pekka
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