From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Piggin Subject: Re: [patch] fs: scale vfsmount refcount (was Re: rcu-walk and dcache scaling tree update and status) Date: Mon, 13 Dec 2010 14:43:22 +1100 Message-ID: <20101213034322.GA7975@amd> References: <20101213023733.GB6522@amd> <20101213024217.GC6522@amd> <20101213033110.GA7898@amd> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Linus Torvalds , Andrew Morton , Al Viro , Stephen Rothwell , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: Nick Piggin Return-path: Content-Disposition: inline In-Reply-To: <20101213033110.GA7898@amd> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Mon, Dec 13, 2010 at 02:31:10PM +1100, Nick Piggin wrote: > (Yes this little bouncing atomic hurts, badly, even on my small 2s12c > tightly connected system on the parallel git diff workload -- because > there are other bouncing kernel cachelines in this workload). ^^^ are no other