RE: [PATCH 1/1] mm: Export a function to get vm committed memory

[Dan Magenheimer]

> From: K. Y. Srinivasan [mailto:kys@xxxxxxxxxxxxx]
> Sent: Tuesday, November 13, 2012 8:03 AM
> To: gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx;
> olaf@xxxxxxxxx; apw@xxxxxxxxxxxxx; andi@xxxxxxxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx;
> kamezawa.hiroyuki@xxxxxxxxx; mhocko@xxxxxxx; hannes@xxxxxxxxxxx; yinghan@xxxxxxxxxx;
> dan.magenheimer@xxxxxxxxxx; konrad.wilk@xxxxxxxxxx
> Cc: K. Y. Srinivasan
> Subject: [PATCH 1/1] mm: Export a function to get vm committed memory
> 
> 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@xxxxxxxxxxxxx>

The patch to the Xen selfballoon driver is unnecessary, but is
one step in the direction of module support for this driver so
I am fine whether the patch is included here or not.

Acked-by: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
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