Messages in this thread | | | Date | Sat, 22 Mar 2003 20:04:55 -0800 | From | Andrew Morton <> | Subject | Re: smp overhead, and rwlocks considered harmful |
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Anton Blanchard <anton@samba.org> wrote: > > > > One thing is noteworthy: ia32's read_unlock() is buslocked, whereas > > spin_unlock() is not. > > Dont forget bitops/atomics used as spinlocks like the rmap pte chain lock. >
Did you end up deciding it was worthwhile putting a spinlock in the ppc64 pageframe for that? Or hashing for it.
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