From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f175.google.com (mail-pd0-f175.google.com [209.85.192.175]) by kanga.kvack.org (Postfix) with ESMTP id 454026B0031 for ; Fri, 11 Oct 2013 03:14:31 -0400 (EDT) Received: by mail-pd0-f175.google.com with SMTP id q10so3744270pdj.6 for ; Fri, 11 Oct 2013 00:14:30 -0700 (PDT) Date: Fri, 11 Oct 2013 16:14:30 +0900 From: Minchan Kim Subject: Re: [PATCH v3 3/3] mm/zswap: avoid unnecessary page scanning Message-ID: <20131011071430.GD6847@bbox> References: <000101ceb836$1a4c0ee0$4ee42ca0$%yang@samsung.com> <20131010125506.158c871becad30328abf6838@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131010125506.158c871becad30328abf6838@linux-foundation.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Weijie Yang , sjenning@linux.vnet.ibm.com, bob.liu@oracle.com, weijie.yang.kh@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, d.j.shin@samsung.com, heesub.shin@samsung.com, kyungmin.park@samsung.com, hau.chen@samsung.com, bifeng.tong@samsung.com, rui.xie@samsung.com On Thu, Oct 10, 2013 at 12:55:06PM -0700, Andrew Morton wrote: > On Mon, 23 Sep 2013 16:21:49 +0800 Weijie Yang wrote: > > > add SetPageReclaim before __swap_writepage so that page can be moved to the > > tail of the inactive list, which can avoid unnecessary page scanning as this > > page was reclaimed by swap subsystem before. > > > > Signed-off-by: Weijie Yang > > Reviewed-by: Bob Liu > > Cc: Minchan Kim > > Cc: stable@vger.kernel.org > > Acked-by: Seth Jennings > > As a minor(?) performance tweak, I don't believe this is suitable for > -stable backporting, so I took that out. If you believe this was a > mistake, please explain why. > Yes. It's never stable stuff. -- Kind regards, Minchan Kim -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org