179 		ret = expand_stack_downwards(bprm->vma, pos);  in get_arg_page()
190 		unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start;  in get_arg_page()
233 	flush_cache_page(bprm->vma, pos, page_to_pfn(page));  in flush_arg_page()
239 	struct vm_area_struct *vma = NULL;  in __bprm_mm_init()  local
242 	bprm->vma = vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);  in __bprm_mm_init()
243 	if (!vma)  in __bprm_mm_init()
247 	vma->vm_mm = mm;  in __bprm_mm_init()
255 	vma->vm_end = STACK_TOP_MAX;  in __bprm_mm_init()
256 	vma->vm_start = vma->vm_end - PAGE_SIZE;  in __bprm_mm_init()
257 	vma->vm_flags = VM_STACK_FLAGS;  in __bprm_mm_init()
258 	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);  in __bprm_mm_init()
259 	err = insert_vm_struct(mm, vma);  in __bprm_mm_init()
265 	bprm->p = vma->vm_end - sizeof(void *);  in __bprm_mm_init()
269 	bprm->vma = NULL;  in __bprm_mm_init()
270 	kmem_cache_free(vm_area_cachep, vma);  in __bprm_mm_init()
507 static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)  in shift_arg_pages()  argument
509 	struct mm_struct *mm = vma->vm_mm;  in shift_arg_pages()
510 	unsigned long old_start = vma->vm_start;  in shift_arg_pages()
511 	unsigned long old_end = vma->vm_end;  in shift_arg_pages()
523 	if (vma != find_vma(mm, new_start))  in shift_arg_pages()
529 	vma_adjust(vma, new_start, old_end, vma->vm_pgoff, NULL);  in shift_arg_pages()
535 	if (length != move_page_tables(vma, old_start,  in shift_arg_pages()
536 				       vma, new_start, length))  in shift_arg_pages()
546 			vma->vm_next ? vma->vm_next->vm_start : 0);  in shift_arg_pages()
555 			vma->vm_next ? vma->vm_next->vm_start : 0);  in shift_arg_pages()
562 	vma_adjust(vma, new_start, new_end, vma->vm_pgoff, NULL);  in shift_arg_pages()
580 	struct vm_area_struct *vma = bprm->vma;  in setup_arg_pages()  local
592 	if (vma->vm_end - vma->vm_start > stack_base)  in setup_arg_pages()
597 	stack_shift = vma->vm_start - stack_base;  in setup_arg_pages()
599 	bprm->p = vma->vm_end - stack_shift;  in setup_arg_pages()
603 	stack_shift = vma->vm_end - stack_top;  in setup_arg_pages()
627 	ret = mprotect_fixup(vma, &prev, vma->vm_start, vma->vm_end,  in setup_arg_pages()
631 	BUG_ON(prev != vma);  in setup_arg_pages()
635 		ret = shift_arg_pages(vma, stack_shift);  in setup_arg_pages()
643 	stack_base = vma->vm_end + EXTRA_STACK_VM_PAGES * PAGE_SIZE;  in setup_arg_pages()
645 	stack_base = vma->vm_start - EXTRA_STACK_VM_PAGES * PAGE_SIZE;  in setup_arg_pages()
647 	ret = expand_stack(vma, stack_base);  in setup_arg_pages()