From: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx> Subject: mm/gup.c: use is_vm_hugetlb_page() to check whether to follow huge No functional change, just leverage the helper function to improve readability as others. Link: http://lkml.kernel.org/r/20200113070322.26627-1-richardw.yang@xxxxxxxxxxxxxxx Signed-off-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx> Reviewed-by: Ralph Campbell <rcampbell@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/gup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/gup.c~mm-gupc-use-is_vm_hugetlb_page-to-check-whether-to-follow-huge +++ a/mm/gup.c @@ -323,7 +323,7 @@ static struct page *follow_pmd_mask(stru pmdval = READ_ONCE(*pmd); if (pmd_none(pmdval)) return no_page_table(vma, flags); - if (pmd_huge(pmdval) && vma->vm_flags & VM_HUGETLB) { + if (pmd_huge(pmdval) && is_vm_hugetlb_page(vma)) { page = follow_huge_pmd(mm, address, pmd, flags); if (page) return page; @@ -433,7 +433,7 @@ static struct page *follow_pud_mask(stru pud = pud_offset(p4dp, address); if (pud_none(*pud)) return no_page_table(vma, flags); - if (pud_huge(*pud) && vma->vm_flags & VM_HUGETLB) { + if (pud_huge(*pud) && is_vm_hugetlb_page(vma)) { page = follow_huge_pud(mm, address, pud, flags); if (page) return page; _
