linux-kernel - Re: Re: [RFC][PATCH] Remove cgroup member from struct page

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Date:	Tue, 9 Sep 2008 21:30:12 +0900 (JST)
From:	kamezawa.hiroyu@...fujitsu.com
To:	balbir@...ux.vnet.ibm.com
Cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Andrew Morton <akpm@...ux-foundation.org>, hugh@...itas.com,
	menage@...gle.com, xemul@...nvz.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: Re: [RFC][PATCH] Remove cgroup member from struct page

----- Original Message -----
>> Balbir, are you ok to CONFIG_CGROUP_MEM_RES_CTLR depends on CONFIG_SPARSEME
M ?
>> I thinks SPARSEMEM(SPARSEMEM_VMEMMAP) is widely used in various archs now.
>
>Can't we make it more generic. I was thinking of allocating memory for each n
ode
>for page_cgroups (of the size of spanned_pages) at initialization time. I've 
not
>yet prototyped the idea. BTW, even with your approach I fail to see why we ne
ed
>to add a dependency on CONFIG_SPARSEMEM (but again it is 4:30 in the morning 
and
>I might be missing the obvious)

Doesn't have big issue without CONFIG_SPARSEMEM, maybe.
Sorry for my confusion.

Thanks,
-Kame

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