Re: [PATCH 1/2] mm: free compound page with correct order

From: Kirill A. Shutemov
Date: Wed Oct 15 2014 - 05:14:19 EST

On Tue, Oct 14, 2014 at 01:16:39PM -0700, Yu Zhao wrote:
> Compound page should be freed by put_page() or free_pages() with
> correct order. Not doing so with causing the tail pages leaked.
> The compound order can be obtained by compound_order() or use
> HPAGE_PMD_ORDER in our case. Some people would argue the latter
> is faster but I prefer the former which is more general.
> Signed-off-by: Yu Zhao <yuzhao@xxxxxxxxxx>

Urghh.. Sorry about that.

Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Fixes: 97ae17497e99 ("thp: implement refcounting for huge zero page")
Cc: stable@xxxxxxxxxxxxxxx # v3.8+

Kirill A. Shutemov
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