Re: [PATCH v3 6/7] mm: make clear_huge_page cache clear only around the fault address

On Thu, Aug 16, 2012 at 08:29:44PM +0200, Andrea Arcangeli wrote:

On Thu, Aug 16, 2012 at 07:43:56PM +0300, Kirill A. Shutemov wrote:

quoted

Hm.. I think with static_key we can avoid cache overhead here. I'll try.

Could you elaborate on the static_key? Is it some sort of self
modifying code?

Runtime code patching. See Documentation/static-keys.txt. We can patch it
on sysctl.

quoted

Thanks, for review. Could you take a look at huge zero page patchset? ;)

I've noticed that too, nice :). I'm checking some detail on the
wrprotect fault behavior but I'll comment there.

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 Kirill A. Shutemov