Messages in this thread | | | Date | Wed, 4 May 2011 18:50:21 +0200 | From | Ingo Molnar <> | Subject | Re: [block IO crash] Re: 2.6.39-rc5-git2 boot crashs |
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* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> My gut reaction would be: let's do the minimal patch that just fixes things > to do irqsafe_cpu_cmpxchg_double() for 2.6.39, and then let's remove the > #ifdef'fery in -rc1. [...]
Looks like the sanest option IMHO, -rc7 is pretty late for anything than a few-liner patch.
> [...] Or make _really_ sure that things are ok for platforms that never even > triggered the CMPXCHG_LOCAL case before.
Considering that the status quo was !CMPXCHG_LOCAL in v2.6.38 and that lockless SLUB is an x86-only affair right now:
$ git grep CMPXCHG_LOCAL arch/ arch/um/Kconfig.x86:config CMPXCHG_LOCAL arch/x86/Kconfig.cpu:config CMPXCHG_LOCAL
There should be no problem with other architectures, right?
Thanks,
Ingo
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