Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751762AbdGYSOe (ORCPT ); Tue, 25 Jul 2017 14:14:34 -0400 Received: from mail-qk0-f171.google.com ([209.85.220.171]:36568 "EHLO mail-qk0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751466AbdGYSOd (ORCPT ); Tue, 25 Jul 2017 14:14:33 -0400 Date: Tue, 25 Jul 2017 14:14:31 -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 06/23] percpu: end chunk area maps page aligned for the populated bitmap Message-ID: <20170725181431.GF18880@destiny> References: <20170724230220.21774-1-dennisz@fb.com> <20170724230220.21774-7-dennisz@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170724230220.21774-7-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: 763 Lines: 19 On Mon, Jul 24, 2017 at 07:02:03PM -0400, Dennis Zhou wrote: > From: "Dennis Zhou (Facebook)" > > The area map allocator manages the first chunk area by hiding all but > the region it is responsible for serving in the area map. To align this > with the populated page bitmap, end_offset is introduced to keep track > of the delta to end page aligned. The area map is appended with the > page aligned end when necessary to be in line with how the bitmap > allocator requires the ending to be aligned with the LCM of PAGE_SIZE > and the size of each bitmap block. percpu_stats is updated to ignore > this region when present. > > Signed-off-by: Dennis Zhou Reviewed-by: Josef Bacik Thanks, Josef