From: Peter Xu <peterx@xxxxxxxxxx> Allow follow_pmd_mask() to take hugetlb tail pages. The old warnings do not help now as hugetlb now allows it to happen, so drop them. Reported-by: Ryan Roberts <ryan.roberts@xxxxxxx> Signed-off-by: Peter Xu <peterx@xxxxxxxxxx> --- mm/gup.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index 91d70057aea0..d60b63fcfc82 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -775,8 +775,6 @@ static struct page *follow_huge_pmd(struct vm_area_struct *vma, assert_spin_locked(pmd_lockptr(mm, pmd)); page = pmd_page(pmdval); - VM_BUG_ON_PAGE(!PageHead(page) && !is_zone_device_page(page), page); - if ((flags & FOLL_WRITE) && !can_follow_write_pmd(pmdval, page, vma, flags)) return NULL; @@ -805,7 +803,6 @@ static struct page *follow_huge_pmd(struct vm_area_struct *vma, page += (addr & ~HPAGE_PMD_MASK) >> PAGE_SHIFT; ctx->page_mask = HPAGE_PMD_NR - 1; - VM_BUG_ON_PAGE(!PageCompound(page) && !is_zone_device_page(page), page); return page; } -- 2.44.0
