[PATCH v1 11/11] locks: give the blocked_hash its own spinlock

[Jeff Layton]

On Tue, 4 Jun 2013 07:46:40 -0700
Christoph Hellwig <hch at infradead.org> wrote:

> Having RCU for modification mostly workloads never is a good idea, so
> I don't think it makes sense to mention it here.
> 
> If you care about the overhead it's worth trying to use per-cpu lists,
> though.
> 

Yeah, I looked at those too in an earlier set and it did help some.
Moving to a hashtable for the blocked_list really seemed to help the
most there, but percpu lists with lglocks or something might help a lot
on the file_lock_list.

-- 
Jeff Layton <jlayton at redhat.com>