linux-kernel - Re: Re: [PATCH 1/6] res_counter: handle limit change

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Message-ID: <11930674.1213604250738.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 16 Jun 2008 17:17:30 +0900 (JST)
From:	kamezawa.hiroyu@...fujitsu.com
To:	Pavel Emelyanov <xemul@...nvz.org>
Cc:	kamezawa.hiroyu@...fujitsu.com, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>, menage@...gle.com,
	balbir@...ux.vnet.ibm.com, yamamoto@...inux.co.jp,
	nishimura@....nes.nec.co.jp, lizf@...fujitsu.com
Subject: Re: Re: [PATCH 1/6] res_counter:  handle limit change

----- Original Message -----

>> I think when I did all in memcg, someone will comment that "why do that
>> all in memcg ? please implement generic one to avoid code duplication"
>
>Hm... But we're choosing between
>
>sys_write->xxx_cgroup_write->res_counter_set_limit->xxx_cgroup_call
>
>and
>
>sys_write->xxx_cgroup_write->res_counter_set_limit
>                           ->xxx_cgroup_call
>
>With the sizeof(void *)-bytes difference in res_counter, nNo?
>
I can't catch what you mean. What is res_counter_set_limit here ?
(my patche's ?) and what is sizeof(void *)-bytes ?

Is it so strange to add following algorithm in res_counter?
==
set_limit -> fail -> shrink -> set limit -> fail ->shrink
-> success -> return 0
==
I think this is enough generic.

Thanks,
-Kame



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