From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) by kanga.kvack.org (Postfix) with ESMTP id 57A616B0003 for ; Thu, 12 Jul 2018 09:12:34 -0400 (EDT) Received: by mail-ed1-f72.google.com with SMTP id x5-v6so10838394edh.8 for ; Thu, 12 Jul 2018 06:12:34 -0700 (PDT) Received: from mx1.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id q9-v6si436435edh.327.2018.07.12.06.12.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 12 Jul 2018 06:12:32 -0700 (PDT) Date: Thu, 12 Jul 2018 15:12:29 +0200 From: Michal Hocko Subject: Re: [PATCH v35 1/5] mm: support to get hints of free page blocks Message-ID: <20180712131229.GM32648@dhcp22.suse.cz> References: <1531215067-35472-1-git-send-email-wei.w.wang@intel.com> <1531215067-35472-2-git-send-email-wei.w.wang@intel.com> <5B455D50.90902@intel.com> <20180711092152.GE20050@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds Cc: wei.w.wang@intel.com, virtio-dev@lists.oasis-open.org, Linux Kernel Mailing List , virtualization , KVM list , linux-mm , "Michael S. Tsirkin" , Andrew Morton , Paolo Bonzini , liliang.opensource@gmail.com, yang.zhang.wz@gmail.com, quan.xu0@gmail.com, nilal@redhat.com, Rik van Riel , peterx@redhat.com [Hmm this one somehow got stuck in my outgoing emails] On Wed 11-07-18 09:23:54, Linus Torvalds wrote: [...] > So I'm open to new interfaces. I just want those new interfaces to > make sense, and be low latency and simple for the VM to do. I'm > objecting to the incredibly baroque and heavy-weight one that can > return near-infinite amounts of memory. Mel was suggesting a bulk page allocator a year ago [1]. I can see only slab bulk api so I am not sure what happened with that work. Anyway I think that starting with what we have right now is much more appropriate than over design this thing from the early beginning. [1] http://lkml.kernel.org/r/20170109163518.6001-5-mgorman@techsingularity.net -- Michal Hocko SUSE Labs