From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Date: Mon, 12 Mar 2007 11:23:26 +0000 Subject: Re: [QUICKLIST 0/6] Arch independent quicklists V1 Message-Id: <20070312.042326.59467679.davem@davemloft.net> List-Id: References: <20070311020923.19905.49260.sendpatchset@schroedinger.engr.sgi.com> <20070311.135946.28788670.davem@davemloft.net> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: clameter@sgi.com Cc: linux-kernel@vger.kernel.org, ak@suse.com, holt@sgi.com, linux-ia64@vger.kernel.org, mpm@selenic.com From: Christoph Lameter Date: Mon, 12 Mar 2007 04:12:32 -0700 (PDT) > On Sun, 11 Mar 2007, David Miller wrote: > > > I'm going to make the radical declaration that it be perhaps often > > better to always initialize page table chunks to all zeros on > > allocation. > > That is the case if most of the page is going to be used soon. If we have > sparse access patterns then not zeroing can avoid uselessly bringing > cachelines in. Good point.