return page;
return no_page_table(vma, flags);
}
+ if (is_hugepd(__hugepd(pmd_val(*pmd)))) {
+ page = follow_huge_pd(vma, address,
+ __hugepd(pmd_val(*pmd)), flags,
+ PMD_SHIFT);
+ if (page)
+ return page;
+ return no_page_table(vma, flags);
+ }
if (pmd_devmap(*pmd)) {
ptl = pmd_lock(mm, pmd);
page = follow_devmap_pmd(vma, address, pmd, flags);
return page;
return no_page_table(vma, flags);
}
+ if (is_hugepd(__hugepd(pud_val(*pud)))) {
+ page = follow_huge_pd(vma, address,
+ __hugepd(pud_val(*pud)), flags,
+ PUD_SHIFT);
+ if (page)
+ return page;
+ return no_page_table(vma, flags);
+ }
if (pud_devmap(*pud)) {
ptl = pud_lock(mm, pud);
page = follow_devmap_pud(vma, address, pud, flags);
unsigned int flags, unsigned int *page_mask)
{
p4d_t *p4d;
+ struct page *page;
p4d = p4d_offset(pgdp, address);
if (p4d_none(*p4d))
if (unlikely(p4d_bad(*p4d)))
return no_page_table(vma, flags);
+ if (is_hugepd(__hugepd(p4d_val(*p4d)))) {
+ page = follow_huge_pd(vma, address,
+ __hugepd(p4d_val(*p4d)), flags,
+ P4D_SHIFT);
+ if (page)
+ return page;
+ return no_page_table(vma, flags);
+ }
return follow_pud_mask(vma, address, p4d, flags, page_mask);
}
return page;
return no_page_table(vma, flags);
}
+ if (is_hugepd(__hugepd(pgd_val(*pgd)))) {
+ page = follow_huge_pd(vma, address,
+ __hugepd(pgd_val(*pgd)), flags,
+ PGDIR_SHIFT);
+ if (page)
+ return page;
+ return no_page_table(vma, flags);
+ }
return follow_p4d_mask(vma, address, pgd, flags, page_mask);
}
return __gup_device_huge_pmd(orig, addr, end, pages, nr);
refs = 0;
- head = pmd_page(orig);
- page = head + ((addr & ~PMD_MASK) >> PAGE_SHIFT);
+ page = pmd_page(orig) + ((addr & ~PMD_MASK) >> PAGE_SHIFT);
do {
- VM_BUG_ON_PAGE(compound_head(page) != head, page);
pages[*nr] = page;
(*nr)++;
page++;
refs++;
} while (addr += PAGE_SIZE, addr != end);
+ head = compound_head(pmd_page(orig));
if (!page_cache_add_speculative(head, refs)) {
*nr -= refs;
return 0;
return __gup_device_huge_pud(orig, addr, end, pages, nr);
refs = 0;
- head = pud_page(orig);
- page = head + ((addr & ~PUD_MASK) >> PAGE_SHIFT);
+ page = pud_page(orig) + ((addr & ~PUD_MASK) >> PAGE_SHIFT);
do {
- VM_BUG_ON_PAGE(compound_head(page) != head, page);
pages[*nr] = page;
(*nr)++;
page++;
refs++;
} while (addr += PAGE_SIZE, addr != end);
+ head = compound_head(pud_page(orig));
if (!page_cache_add_speculative(head, refs)) {
*nr -= refs;
return 0;
BUILD_BUG_ON(pgd_devmap(orig));
refs = 0;
- head = pgd_page(orig);
- page = head + ((addr & ~PGDIR_MASK) >> PAGE_SHIFT);
+ page = pgd_page(orig) + ((addr & ~PGDIR_MASK) >> PAGE_SHIFT);
do {
- VM_BUG_ON_PAGE(compound_head(page) != head, page);
pages[*nr] = page;
(*nr)++;
page++;
refs++;
} while (addr += PAGE_SIZE, addr != end);
+ head = compound_head(pgd_page(orig));
if (!page_cache_add_speculative(head, refs)) {
*nr -= refs;
return 0;