linux-kernel - Re: [PATCH] memcg: fix mem_cgroup_isolate_lru_page to use the same rotate logic at busy path

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Message-ID: <20090609120451.GD6648@balbir.in.ibm.com>
Date:	Tue, 9 Jun 2009 17:34:51 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>
Subject: Re: [PATCH] memcg: fix mem_cgroup_isolate_lru_page to use the same
	rotate logic at busy path

* KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> [2009-06-09 18:22:53]:

> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> 
> This patch tries to fix memcg's lru rotation sanity...make memcg use
> the same logic as global LRU does.
> 
> Now, at __isolate_lru_page() retruns -EBUSY, the page is rotated to
> the tail of LRU in global LRU's isolate LRU pages. But in memcg,
> it's not handled. This makes memcg do the same behavior as global LRU
> and rotate LRU in the page is busy.
> 
> Note: __isolate_lru_page() is not isolate_lru_page() and it's just used
> in sc->isolate_pages() logic.
> 
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


Acked-by: Balbir Singh <balbir@...ux.vnet.ibm.com>
 

-- 
	Balbir
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