Requests & Suggestions - Consider backporting zero huge_page in 3.7?

hiltongil - 02.02.2013, 15:12
Post subject: Consider backporting zero huge_page in 3.7?
Hi aptosid devs.
I see this question in http://siduction.org/index.php?name=PNp ... amp;t=3091

There a siduction user wrote

zero huge_page can save a lot of RAM in some situations on systems that have transparent_hugepage=always.

A discussion on zero huge_page may be read at http://comments.gmane.org/gmane.linux.kernel.mm/85623

And the patch may be found at http://git.kernel.org/?p=linux/kernel/g ... 88000edc18

But the patch will be merged for Linux 3.8. Towo, would you consider backporting this patch to 3.7, or we'll just have to wait for 3.8?

It would be interesting to see how this change will affect memory usage, particularly in my system where having transparent_hugepages=always results in large RSS values for Firefox. Here's a bug report on that: https://bugzilla.mozilla.org/show_bug.cgi?id=770612

So I have the same doubt. It's possible include that patch in the aptosid kernel? Or that's not a good idea?

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