Messages in this thread | | | Date | Wed, 17 Apr 2013 12:07:04 -0700 | From | Johannes Weiner <> | Subject | Re: [PATCH] thp: fix huge zero page logic for page with pfn == 0 |
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On Wed, Apr 17, 2013 at 06:07:33PM +0300, Kirill A. Shutemov wrote: > From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> > > Current implementation of huge zero page uses pfn value 0 to indicate > that the page hasn't allocated yet. It assumes that buddy page allocator > can't return page with pfn == 0. > > Let's rework the code to store 'struct page *' of huge zero page, not > its pfn. This way we can avoid the weak assumption. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> > Reported-by: Minchan Kim <minchan@kernel.org> > Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
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