linux-kernel - Re: [PATCH 2/6] change alloc function in pcpu_alloc

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Message-ID: <n2i28c262361004150333nf1bac78dr13acc418496e6a6b@mail.gmail.com>
Date:	Thu, 15 Apr 2010 19:33:28 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Mel Gorman <mel@....ul.ie>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Bob Liu <lliubbo@...il.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Christoph Lameter <cl@...ux-foundation.org>
Subject: Re: [PATCH 2/6] change alloc function in pcpu_alloc_pages

On Thu, Apr 15, 2010 at 7:21 PM, Minchan Kim <minchan.kim@...il.com> wrote:
> On Thu, Apr 15, 2010 at 7:08 PM, Tejun Heo <tj@...nel.org> wrote:
>> Hello,
>>
>> On 04/15/2010 06:40 PM, Minchan Kim wrote:
>>>> I'm not an expert on that part of the kernel but isn't
>>>> alloc_pages_any_node() identical to alloc_pages_exact_node()?  All
>>>
>>> alloc_pages_any_node means user allows allocated pages in any
>>> node(most likely current node) alloc_pages_exact_node means user
>>> allows allocated pages in nid node if he doesn't use __GFP_THISNODE.
>>
>> Ooh, sorry, I meant alloc_pages().  What would be the difference
>> between alloc_pages_any_node() and alloc_pages()?
>
> It's no different. It's same. Just naming is more explicit. :)
> I think it could be following as.
>
> #define alloc_pages alloc_pages_any_node.
> strucdt page * alloc_pages_node() {
typo. Sorry.
struct page * alloc_pages_any_node {

>   int nid = numa_node_id();
>   ...
>   return page;
> }
>


-- 
Kind regards,
Minchan Kim
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