From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Chinner Subject: Re: [patch 00/28] [rfc] dcache scaling part 1 Date: Wed, 17 Nov 2010 13:12:44 +1100 Message-ID: <20101117021244.GM22876@dastard> References: <20101116140900.039761100@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: Nick Piggin Return-path: Content-Disposition: inline In-Reply-To: <20101116140900.039761100@kernel.dk> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Wed, Nov 17, 2010 at 01:09:00AM +1100, Nick Piggin wrote: > There are 3 main parts to dcache scaling. This one primarily adds new locks > to take over dcache_lock, and some pre/post prep and streamlining patches. > > The second implements fine grained locking, and is rather trivial after > part 1. > > The third implements rcu-walk. rcu-walk depends on the first part, because it > relies on using d_lock to protect the state of the dentry (when converting from > rcu-walk to refcounted walk). Without the fine grained locing, we'd need to use > dcache_lock for that, which would be a step backwards to put into path walking > again. > > Comments? Do you have a git tree somewhere with this series in it? Cheers, Dave. -- Dave Chinner david@fromorbit.com