linux-kernel - Re: [BUG REPORT] [mm-hotplug, aio] aio ring

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Message-ID: <50BC15E1.8060806@cn.fujitsu.com>
Date:	Mon, 03 Dec 2012 11:00:49 +0800
From:	Lin Feng <linfeng@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	viro@...iv.linux.org.uk, bcrl@...ck.org,
	kamezawa.hiroyu@...fujitsu.com, mhocko@...e.cz, hughd@...gle.com,
	cl@...ux.com, mgorman@...e.de, minchan@...nel.org,
	isimatu.yasuaki@...fujitsu.com, laijs@...fujitsu.com,
	wency@...fujitsu.com, tangchen@...fujitsu.com,
	linux-fsdevel@...r.kernel.org, linux-aio@...ck.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Lin Feng <linfeng@...fujitsu.com>
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined



On 11/30/2012 06:47 PM, Andrew Morton wrote:
> On Fri, 30 Nov 2012 18:29:30 +0800 Lin Feng <linfeng@...fujitsu.com> wrote:
> 
>>> add a new library function which callers can use before (or after?)
>>> calling get_user_pages[_fast]().
>> Sorry, I'm not quite understand what "library function" function means..
>> Does it means a function aids get_user_pages() or totally wraps/replaces 
>> get_user_pages(), or none of above?
> 
> "library function" is terminology for a general facility which
> the core kernel makes available to other parts of the kernel. 
> get_user_pages() is a library function, as are the functions in lib/,
> etc.  "grep EXPORT_SYMBOL ./*/*.c"
hi Andrew,

Thanks for your explanation and sorry for my ignorant question :)
As Mel said Still I can't find a way to make every guy happy..

Thanks,
linfeng

> 
> 
> 
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