From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Piggin Subject: [patch 00/28] [rfc] dcache scaling part 1 Date: Wed, 17 Nov 2010 01:09:00 +1100 Message-ID: <20101116140900.039761100@kernel.dk> Cc: linux-kernel@vger.kernel.org To: linux-fsdevel@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org 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?