linux-kernel - Re: [PATCH] cfs: NULL pointer check

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Message-ID: <20110916171852.17f75ce6@wang-bj-intel>
Date:	Fri, 16 Sep 2011 17:18:52 -0400
From:	xingchao <xingchao.wang@...el.com>
To:	Paul Turner <pjt@...gle.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"peterz@...radead.org" <peterz@...radead.org>,
	"yong.zhang0@...il.com" <yong.zhang0@...il.com>,
	"Shi, Alex" <alex.shi@...el.com>
Subject: Re: [PATCH] cfs: NULL pointer check

On Fri, 16 Sep 2011 15:42:41 +0800
Paul Turner <pjt@...gle.com> wrote:

> On 09/16/11 10:48, Wang Xingchao wrote:
> > se maybe NULL if cfs_rq->rb_leftmost is NULL
> 
> nack, it had better not be; otherwise we've got a corrupt tree!
> 
> Also, this diff is against the previous -- please bundle dependent 
> patches as a series in the future.
> 
Got it.  :)
Paul, i'd send another patch to remove the NULL pointer check
in __pick_first/last_entity().

--xingchao
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