Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754529AbdGYTch (ORCPT ); Tue, 25 Jul 2017 15:32:37 -0400 Received: from mail-qk0-f170.google.com ([209.85.220.170]:37354 "EHLO mail-qk0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751568AbdGYTcQ (ORCPT ); Tue, 25 Jul 2017 15:32:16 -0400 Date: Tue, 25 Jul 2017 15:32:14 -0400 From: Josef Bacik To: Dennis Zhou Cc: Tejun Heo , Christoph Lameter , Josef Bacik , linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel-team@fb.com, Dennis Zhou Subject: Re: [PATCH v2 19/23] percpu: update alloc path to only scan if contig hints are broken Message-ID: <20170725193213.GS18880@destiny> References: <20170724230220.21774-1-dennisz@fb.com> <20170724230220.21774-20-dennisz@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170724230220.21774-20-dennisz@fb.com> User-Agent: Mutt/1.8.0 (2017-02-23) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 544 Lines: 17 On Mon, Jul 24, 2017 at 07:02:16PM -0400, Dennis Zhou wrote: > From: "Dennis Zhou (Facebook)" > > Metadata is kept per block to keep track of where the contig hints are. > Scanning can be avoided when the contig hints are not broken. In that > case, left and right contigs have to be managed manually. > > This patch changes the allocation path hint updating to only scan when > contig hints are broken. > > Signed-off-by: Dennis Zhou Reviewed-by: Josef Bacik Thanks, Josef