Re: [PATCH] thp: tail page refcounting fix #5

[Andi Kleen]

> Calling get_page/put_pages more times than necessary is never ideal, I
> imagine the biggest cost is the atomic_inc on the head page that

I've actually seen it in profile logs, but I hadn't realized it was redundant.

Have to see if it brings a benefit to hot users.

-Andi
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