From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <owner-linux-mm@kvack.org>
Received: from psmtp.com (na3sys010amx202.postini.com [74.125.245.202])
	by kanga.kvack.org (Postfix) with SMTP id 468B76B0033
	for <linux-mm@kvack.org>; Thu, 22 Aug 2013 08:08:24 -0400 (EDT)
Received: from /spool/local
	by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted
	for <linux-mm@kvack.org> from <liwanp@linux.vnet.ibm.com>;
	Thu, 22 Aug 2013 17:29:15 +0530
Received: from d28relay04.in.ibm.com (d28relay04.in.ibm.com [9.184.220.61])
	by d28dlp03.in.ibm.com (Postfix) with ESMTP id 965D51258053
	for <linux-mm@kvack.org>; Thu, 22 Aug 2013 17:38:01 +0530 (IST)
Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64])
	by d28relay04.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r7MC89aK8519834
	for <linux-mm@kvack.org>; Thu, 22 Aug 2013 17:38:10 +0530
Received: from d28av02.in.ibm.com (localhost [127.0.0.1])
	by d28av02.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r7MC8Bb0027961
	for <linux-mm@kvack.org>; Thu, 22 Aug 2013 17:38:12 +0530
Date: Thu, 22 Aug 2013 20:08:09 +0800
From: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Subject: Re: [PATCH v2 2/4] mm/sparse: introduce alloc_usemap_and_memmap
Message-ID: <20130822120809.GA6489@hacker.(null)>
Reply-To: Wanpeng Li <liwanp@linux.vnet.ibm.com>
References: <1376981696-4312-1-git-send-email-liwanp@linux.vnet.ibm.com>
 <1376981696-4312-2-git-send-email-liwanp@linux.vnet.ibm.com>
 <20130820160735.b12fe1b3dd64b4dc146d2fa0@linux-foundation.org>
 <CAE9FiQVy2uqLm2XyStYmzxSmsw7TzrB0XDhCRLymnf+L3NPxrA@mail.gmail.com>
 <52142ffe.84c0440a.57e5.02acSMTPIN_ADDED_BROKEN@mx.google.com>
 <CAE9FiQW1c3-d+iMebRK6JyHCpMt8mjga-TnsfTuVsC1bQZqsYA@mail.gmail.com>
 <52146c58.a3e2440a.0f5a.ffffed8dSMTPIN_ADDED_BROKEN@mx.google.com>
 <CAE9FiQVWVzO93RM_QT-Qp+5jJUEiw=5OOD_454fCjgQ5p9-b3g@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="SUOF0GtieIMvvwua"
Content-Disposition: inline
In-Reply-To: <CAE9FiQVWVzO93RM_QT-Qp+5jJUEiw=5OOD_454fCjgQ5p9-b3g@mail.gmail.com>
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>, Rik van Riel <riel@redhat.com>, Fengguang Wu <fengguang.wu@intel.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Johannes Weiner <hannes@cmpxchg.org>, Tejun Heo <tj@kernel.org>, Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>, David Rientjes <rientjes@google.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Jiri Kosina <jkosina@suse.cz>, Linux MM <linux-mm@kvack.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>


--SUOF0GtieIMvvwua
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Wed, Aug 21, 2013 at 10:19:52PM -0700, Yinghai Lu wrote:
>On Wed, Aug 21, 2013 at 12:29 AM, Wanpeng Li <liwanp@linux.vnet.ibm.com> wrote:
>> Hi Yinghai,
>> On Tue, Aug 20, 2013 at 09:28:29PM -0700, Yinghai Lu wrote:
>>>On Tue, Aug 20, 2013 at 8:11 PM, Wanpeng Li <liwanp@linux.vnet.ibm.com> wrote:
>>>> Hi Yinghai,
>>>> On Tue, Aug 20, 2013 at 05:02:17PM -0700, Yinghai Lu wrote:
>>>>>>> -     /* ok, last chunk */
>>>>>>> -     sparse_early_usemaps_alloc_node(usemap_map, pnum_begin, NR_MEM_SECTIONS,
>>>>>>> -                                      usemap_count, nodeid_begin);
>>>>>>> +     alloc_usemap_and_memmap(usemap_map, true);
>>>>>
>>>>>alloc_usemap_and_memmap() is somehow confusing.
>>>>>
>>>>>Please check if you can pass function pointer instead of true/false.
>>>>>
>>>>
>>>> sparse_early_usemaps_alloc_node and sparse_early_mem_maps_alloc_node is
>>>> similar, however, one has a parameter unsigned long ** and the other has
>>>> struct page **. function pointer can't help, isn't it? ;-)
>>>
>>>you could have one generic function pointer like
>>>void *alloc_func(void *data);
>>>
>>>and in the every alloc function, have own struct data to pass in/out...
>>>

How about this one?


--SUOF0GtieIMvvwua
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment; filename="0001-2.patch"


--SUOF0GtieIMvvwua--