linux-kernel - Re: [RFC][PATCH] flexible array implementation v4

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Date:	Fri, 24 Jul 2009 12:08:11 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Dave Hansen <dave@...ux.vnet.ibm.com>, akpm@...ux-foundation.org,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, menage@...gle.com,
	vda.linux@...glemail.com, mikew@...gle.com,
	xiyou.wangcong@...il.com, hpa@...or.com, bblum@...gle.com
Subject: Re: [RFC][PATCH] flexible array implementation v4

On Fri, 24 Jul 2009 11:02:28 +0800
Li Zefan <lizf@...fujitsu.com> wrote:

> Dave Hansen wrote:
> > Remaining issues:
> > - How should we deal with out-of-range indexes, especially
> >   in flex_array_get() which returns void*?  ERR_PTR()?
> >   BUG_ON()?  return NULL (current behavior)?
> > - Should care be taken not to allow a flex_array_get() to
> >   an index where no flex_array_put() was done?
> > - Should we decay further than just packing things into the
> >   'base' page?  Should we actually kmalloc() less than a
> >   page at times when it will fit?
> > 
> 
> I sugguest find some candidate users and see how this flex_array
> fits them.
> 
Hmm, can't we rewrite cgroup->tasks file using this ?
I'll try some if I have time.

-Kame


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