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[195.135.221.2]) by mx.google.com with ESMTP id e3si3939491edd.165.2019.04.01.00.59.37 for ; Mon, 01 Apr 2019 00:59:37 -0700 (PDT) Received-SPF: pass (google.com: domain of osalvador@suse.de designates 195.135.221.2 as permitted sender) client-ip=195.135.221.2; Authentication-Results: mx.google.com; spf=pass (google.com: domain of osalvador@suse.de designates 195.135.221.2 as permitted sender) smtp.mailfrom=osalvador@suse.de Received: by suse.de (Postfix, from userid 1000) id CF946479F; Mon, 1 Apr 2019 09:59:36 +0200 (CEST) Date: Mon, 1 Apr 2019 09:59:36 +0200 From: Oscar Salvador To: Michal Hocko Cc: David Hildenbrand , akpm@linux-foundation.org, dan.j.williams@intel.com, Jonathan.Cameron@huawei.com, anshuman.khandual@arm.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 0/4] mm,memory_hotplug: allocate memmap from hotadded memory Message-ID: <20190401075936.bjt2qsrhw77rib77@d104.suse.de> References: <20190328134320.13232-1-osalvador@suse.de> <20190329084547.5k37xjwvkgffwajo@d104.suse.de> <20190329134243.GA30026@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190329134243.GA30026@dhcp22.suse.cz> User-Agent: NeoMutt/20170421 (1.8.2) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Mar 29, 2019 at 02:42:43PM +0100, Michal Hocko wrote: > Having a larger contiguous area is definitely nice to have but you also > have to consider the other side of the thing. If we have a movable > memblock with unmovable memory then we are breaking the movable > property. So there should be some flexibility for caller to tell whether > to allocate on per device or per memblock. Or we need something to move > memmaps during the hotremove. By movable memblock you mean a memblock whose pages can be migrated over when this memblock is offlined, right? -- Oscar Salvador SUSE L3