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Date: Thu, 28 Nov 2019 09:03:20 +0800 From: Wei Yang <richardw.yang@...ux.intel.com> To: akpm@...ux-foundation.org Cc: kirill.shutemov@...ux.intel.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org, Wei Yang <richardw.yang@...ux.intel.com> Subject: [PATCH 1/2] mm/page_vma_mapped: use PMD_SIZE instead of calculating it At this point, we are sure page is PageTransHuge, which means hpage_nr_pages is HPAGE_PMD_NR. This is safe to use PMD_SIZE instead of calculating it. Signed-off-by: Wei Yang <richardw.yang@...ux.intel.com> --- mm/page_vma_mapped.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c index eff4b4520c8d..76e03650a3ab 100644 --- a/mm/page_vma_mapped.c +++ b/mm/page_vma_mapped.c @@ -223,7 +223,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw) if (pvmw->address >= pvmw->vma->vm_end || pvmw->address >= __vma_address(pvmw->page, pvmw->vma) + - hpage_nr_pages(pvmw->page) * PAGE_SIZE) + PMD_SIZE) return not_found(pvmw); /* Did we cross page table boundary? */ if (pvmw->address % PMD_SIZE == 0) { -- 2.17.1
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