linux-kernel - Re: [PATCH 1/1] mm: Export a function to get vm committed memory

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Message-ID: <alpine.DEB.2.00.1211131307090.5164@chino.kir.corp.google.com>
Date:	Tue, 13 Nov 2012 13:07:30 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, olaf@...fle.de, apw@...onical.com,
	andi@...stfloor.org, akpm@...ux-foundation.org, linux-mm@...ck.org,
	kamezawa.hiroyuki@...il.com, mhocko@...e.cz, hannes@...xchg.org,
	yinghan@...gle.com, dan.magenheimer@...cle.com,
	konrad.wilk@...cle.com
Subject: Re: [PATCH 1/1] mm: Export a function to get vm committed memory

On Tue, 13 Nov 2012, K. Y. Srinivasan wrote:

> It will be useful to be able to access global memory commitment from device
> drivers. On the Hyper-V platform, the host has a policy engine to balance
> the available physical memory amongst all competing virtual machines
> hosted on a given node. This policy engine is driven by a number of metrics
> including the memory commitment reported by the guests. The balloon driver
> for Linux on Hyper-V will use this function to retrieve guest memory commitment.
> This function is also used in Xen self ballooning code.
> 
> Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>

Acked-by: David Rientjes <rientjes@...gle.com>

Very nice!
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