20 static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,  in gup_pte_range()  argument
37 	ptep = pte_offset_kernel(&pmd, addr);  in gup_pte_range()
64 	} while (ptep++, addr += PAGE_SIZE, addr != end);  in gup_pte_range()
69 static int gup_huge_pmd(pmd_t *pmdp, pmd_t pmd, unsigned long addr,  in gup_huge_pmd()  argument
84 	page = head + ((addr & ~PMD_MASK) >> PAGE_SHIFT);  in gup_huge_pmd()
92 	} while (addr += PAGE_SIZE, addr != end);  in gup_huge_pmd()
118 static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end,  in gup_pmd_range()  argument
124 	pmdp = pmd_offset(&pud, addr);  in gup_pmd_range()
128 		next = pmd_addr_end(addr, end);  in gup_pmd_range()
132 			if (!gup_huge_pmd(pmdp, pmd, addr, next,  in gup_pmd_range()
135 		} else if (!gup_pte_range(pmd, addr, next, write,  in gup_pmd_range()
138 	} while (pmdp++, addr = next, addr != end);  in gup_pmd_range()
143 static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end,  in gup_pud_range()  argument
149 	pudp = pud_offset(&pgd, addr);  in gup_pud_range()
153 		next = pud_addr_end(addr, end);  in gup_pud_range()
156 		if (!gup_pmd_range(pud, addr, next, write, pages, nr))  in gup_pud_range()
158 	} while (pudp++, addr = next, addr != end);  in gup_pud_range()
167 	unsigned long addr, len, end;  in __get_user_pages_fast()  local
173 	addr = start;  in __get_user_pages_fast()
178 	pgdp = pgd_offset(mm, addr);  in __get_user_pages_fast()
182 		next = pgd_addr_end(addr, end);  in __get_user_pages_fast()
185 		if (!gup_pud_range(pgd, addr, next, write, pages, &nr))  in __get_user_pages_fast()
187 	} while (pgdp++, addr = next, addr != end);  in __get_user_pages_fast()
197 	unsigned long addr, len, end;  in get_user_pages_fast()  local
203 	addr = start;  in get_user_pages_fast()
226 	pgdp = pgd_offset(mm, addr);  in get_user_pages_fast()
230 		next = pgd_addr_end(addr, end);  in get_user_pages_fast()
233 		if (!gup_pud_range(pgd, addr, next, write, pages, &nr))  in get_user_pages_fast()
235 	} while (pgdp++, addr = next, addr != end);  in get_user_pages_fast()