linux-kernel - Re: [RFC][-mm] Add an owner to the mm

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Message-ID: <6599ad830803312306l59fabaa0o2f62feb0d59b2ce3@mail.gmail.com>
Date:	Mon, 31 Mar 2008 23:06:12 -0700
From:	"Paul Menage" <menage@...gle.com>
To:	"YAMAMOTO Takashi" <yamamoto@...inux.co.jp>
Cc:	balbir@...ux.vnet.ibm.com, xemul@...nvz.org, hugh@...itas.com,
	skumar@...ux.vnet.ibm.com, lizf@...fujitsu.com,
	linux-kernel@...r.kernel.org, taka@...inux.co.jp,
	linux-mm@...ck.org, rientjes@...gle.com, akpm@...ux-foundation.org,
	kamezawa.hiroyu@...fujitsu.com
Subject: Re: [RFC][-mm] Add an owner to the mm_struct (v3)

On Mon, Mar 31, 2008 at 11:03 PM, YAMAMOTO Takashi
<yamamoto@...inux.co.jp> wrote:
>
>  changing mm->owner without notifying controllers makes it difficult to use.
>  can you provide a notification mechanism?
>

Yes, I think that call will need to be in the task_lock() critical
section in which we update mm->owner.

Right now I think the only user that needs to be notified at that
point is Balbir's virtual address limits controller.

Paul
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