116 		unsigned long old_addr, unsigned long old_end,  in move_ptes()  argument
124 	unsigned long len = old_end - old_addr;  in move_ptes()
151 	old_pte = pte_offset_map_lock(mm, old_pmd, old_addr, &old_ptl);  in move_ptes()
159 	for (; old_addr < old_end; old_pte++, old_addr += PAGE_SIZE,  in move_ptes()
164 		pte = ptep_get_and_clear(mm, old_addr, old_pte);  in move_ptes()
178 		pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr);  in move_ptes()
195 static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr,  in move_normal_pmd()  argument
203 	if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)  in move_normal_pmd()
204 	    || old_end - old_addr < PMD_SIZE)  in move_normal_pmd()
231 	flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);  in move_normal_pmd()
241 		unsigned long old_addr, struct vm_area_struct *new_vma,  in move_page_tables()  argument
249 	old_end = old_addr + len;  in move_page_tables()
250 	flush_cache_range(vma, old_addr, old_end);  in move_page_tables()
253 				old_addr, old_end);  in move_page_tables()
256 	for (; old_addr < old_end; old_addr += extent, new_addr += extent) {  in move_page_tables()
258 		next = (old_addr + PMD_SIZE) & PMD_MASK;  in move_page_tables()
260 		extent = next - old_addr;  in move_page_tables()
261 		if (extent > old_end - old_addr)  in move_page_tables()
262 			extent = old_end - old_addr;  in move_page_tables()
263 		old_pmd = get_old_pmd(vma->vm_mm, old_addr);  in move_page_tables()
275 				moved = move_huge_pmd(vma, old_addr, new_addr,  in move_page_tables()
282 			split_huge_pmd(vma, old_pmd, old_addr);  in move_page_tables()
295 			moved = move_normal_pmd(vma, old_addr, new_addr,  in move_page_tables()
309 		move_ptes(vma, old_pmd, old_addr, old_addr + extent, new_vma,  in move_page_tables()
315 	return len + old_addr - old_end;	/* how much done */  in move_page_tables()
319 		unsigned long old_addr, unsigned long old_len,  in move_vma()  argument
349 	err = ksm_madvise(vma, old_addr, old_addr + old_len,  in move_vma()
354 	new_pgoff = vma->vm_pgoff + ((old_addr - vma->vm_start) >> PAGE_SHIFT);  in move_vma()
360 	moved_len = move_page_tables(vma, old_addr, new_vma, new_addr, old_len,  in move_vma()
374 		move_page_tables(new_vma, new_addr, vma, old_addr, moved_len,  in move_vma()
378 		old_addr = new_addr;  in move_vma()
382 		arch_remap(mm, old_addr, old_addr + old_len,  in move_vma()
390 		if (old_addr > vma->vm_start &&  in move_vma()
391 		    old_addr + old_len < vma->vm_end)  in move_vma()
411 	if (do_munmap(mm, old_addr, old_len, uf_unmap) < 0) {  in move_vma()