From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx107.postini.com [74.125.245.107]) by kanga.kvack.org (Postfix) with SMTP id 0243A6B0032 for ; Fri, 6 Sep 2013 11:15:33 -0400 (EDT) Received: by mail-ve0-f178.google.com with SMTP id jw12so1694774veb.37 for ; Fri, 06 Sep 2013 08:15:33 -0700 (PDT) Date: Fri, 6 Sep 2013 11:15:26 -0400 From: Tejun Heo Subject: Re: [PATCH 00/11] x86, memblock: Allocate memory near kernel image before SRAT parsed. Message-ID: <20130906151526.GA22423@mtj.dyndns.org> References: <1377596268-31552-1-git-send-email-tangchen@cn.fujitsu.com> <20130904192215.GG26609@mtj.dyndns.org> <52299935.0302450a.26c9.ffffb240SMTPIN_ADDED_BROKEN@mx.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <52299935.0302450a.26c9.ffffb240SMTPIN_ADDED_BROKEN@mx.google.com> Sender: owner-linux-mm@kvack.org List-ID: To: Wanpeng Li Cc: rjw@sisk.pl, lenb@kernel.org, tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com, akpm@linux-foundation.org, trenn@suse.de, yinghai@kernel.org, jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com, mgorman@suse.de, minchan@kernel.org, mina86@mina86.com, gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com, lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com, prarit@redhat.com, zhangyanfei@cn.fujitsu.com, x86@kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-acpi@vger.kernel.org Hello, Wanpeng. On Fri, Sep 06, 2013 at 04:58:11PM +0800, Wanpeng Li wrote: > What's the root reason memblock alloc from high to low? To reduce > fragmentation or ... Because low memory tends to be more precious, it's just easier to pack everything towards the top so that we don't have to worry about which zone to use for allocation and fallback logic. Thanks. -- tejun -- 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