On 07/31/2012 04:06 PM, Michal Hocko wrote:
On Tue 31-07-12 13:49:21, Larry Woodman wrote:
On 07/31/2012 08:46 AM, Mel Gorman wrote:
Fundamentally I think the problem is that we are not correctly detecting
that page table sharing took place during huge_pte_alloc(). This patch is
longer and makes an API change but if I'm right, it addresses the underlying
problem. The first VM_MAYSHARE patch is still necessary but would you mind
testing this on top please?
Hi Mel, yes this does work just fine. It ran for hours without a panic so
I'll Ack this one if you send it to the list.
Hi Larry, thanks for testing! I have a different patch which tries to
address this very same issue. I am not saying it is better or that it
should be merged instead of Mel's one but I would be really happy if you
could give it a try. We can discuss (dis)advantages of both approaches
later.
Thanks!
Sure, it will take me a day since I keep loosing the hardware to
proproduce the
problem with. I'll report back tomorrow.
Larry
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