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Re: Hashed locking for the namecache
> This patch uses a hash of locks to cover forward lookup in the namecache.
> On an 8-core box it cuts the time for 'build.sh -j16 release' by about 5%.
> We could probably do something a lot more efficient with garbage collection.
> But, this patch is simple and I think it could be a stepping stone towards
> a more better scheme.
cache_lookup() sometimes modifies caches. eg. "goto remove" cases.
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