Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763726AbdLSOk1 (ORCPT ); Tue, 19 Dec 2017 09:40:27 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:33567 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763708AbdLSOkZ (ORCPT ); Tue, 19 Dec 2017 09:40:25 -0500 Date: Tue, 19 Dec 2017 06:40:20 -0800 From: Matthew Wilcox To: Tetsuo Handa Cc: wei.w.wang@intel.com, virtio-dev@lists.oasis-open.org, linux-kernel@vger.kernel.org, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, linux-mm@kvack.org, mst@redhat.com, mhocko@kernel.org, akpm@linux-foundation.org, mawilcox@microsoft.com, david@redhat.com, cornelia.huck@de.ibm.com, mgorman@techsingularity.net, aarcange@redhat.com, amit.shah@redhat.com, pbonzini@redhat.com, liliang.opensource@gmail.com, yang.zhang.wz@gmail.com, quan.xu0@gmail.com, nilal@redhat.com, riel@redhat.com Subject: Re: [PATCH v20 0/7] Virtio-balloon Enhancement Message-ID: <20171219144020.GA30842@bombadil.infradead.org> References: <1513685879-21823-1-git-send-email-wei.w.wang@intel.com> <201712192305.AAE21882.MtQHJOFFSFVOLO@I-love.SAKURA.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201712192305.AAE21882.MtQHJOFFSFVOLO@I-love.SAKURA.ne.jp> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1009 Lines: 25 On Tue, Dec 19, 2017 at 11:05:11PM +0900, Tetsuo Handa wrote: > Removing exceptional path made this patch easier to read. > But what I meant is > > Can you eliminate exception path and fold all xbitmap patches into one, and > post only one xbitmap patch without virtio-balloon changes? > > . > > I still think we don't need xb_preload()/xb_preload_end(). > I think xb_find_set() has a bug in !node path. Don't think. Write a test-case. Please. If it shows a bug, then great, Wei has an example of what the bug is to fix. If it doesn't show a bug, then we can add it to the test suite anyway, to ensure that case continues to work in the future. > Also, please avoid unconditionally adding to builtin modules. > There are users who want to save even few KB. > > -- > 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