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

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Date:	Fri, 30 Nov 2012 02:47:55 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Lin Feng <linfeng@...fujitsu.com>
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
Subject: Re: [BUG REPORT] [mm-hotplug, aio] aio ring_pages can't be offlined

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"


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