Messages in this thread | | | From | Linus Torvalds <> | Date | Mon, 22 Jan 2018 12:16:52 -0800 | Subject | Re: [PATCH] mm, page_vma_mapped: Introduce pfn_in_hpage() |
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On Mon, Jan 22, 2018 at 1:22 AM, Kirill A. Shutemov <kirill.shutemov@linux.intel.com> wrote: > The new helper would check if the pfn belongs to the page. For huge > pages it checks if the PFN is within range covered by the huge page. > > The helper is used in check_pte(). The original code the helper replaces > had two call to page_to_pfn(). page_to_pfn() is relatively costly. > > Although current GCC is able to optimize code to have one call, it's > better to do this explicitly.
Thanks, I applied it directly, since your page_vma_mapped fix was still my top commit, and I asked for this cleanup.
Linus
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