Re: [PATCH] blockgroup_lock: hashed spinlocks for ext2 and ext3

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• In reply to: Andi Kleen: "Re: [PATCH] blockgroup_lock: hashed spinlocks for ext2 and ext3"
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Andi Kleen <ak@suse.de> wrote:
>
> >
> > And this hashed lock is not a per-cpu thing. (No locks are!) It just uses
> > NR_CPUS to decide how big the hash should be.
>
> Isn't that what the IBM kmalloc_per_cpu() was for ? (I think the patch
> was from Dipankar)

This is not a per-cpu data structure.

It is a hashed spinlock which uses NR_CPUS as a sizing hint.

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• Next message: Valdis.Kletnieks@vt.edu: "Re: 2.5 'what to expect' document."
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• In reply to: Andi Kleen: "Re: [PATCH] blockgroup_lock: hashed spinlocks for ext2 and ext3"
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