69 	unsigned long start;  member
79 	unsigned long start, len;  in userfaultfd_wake_function()  local
84 	start = range->start;  in userfaultfd_wake_function()
86 	if (len && (start > uwq->msg.arg.pagefault.address ||  in userfaultfd_wake_function()
87 		    start + len <= uwq->msg.arg.pagefault.address))  in userfaultfd_wake_function()
651 	unsigned long start, end;  in __wake_userfault()  local
653 	start = range->start;  in __wake_userfault()
654 	end = range->start + range->len;  in __wake_userfault()
698 					  __u64 start, __u64 len)  in validate_range()  argument
702 	if (start & ~PAGE_MASK)  in validate_range()
708 	if (start < mmap_min_addr)  in validate_range()
710 	if (start >= task_size)  in validate_range()
712 	if (len > task_size - start)  in validate_range()
727 	unsigned long start, end, vma_end;  in userfaultfd_register()  local
755 	ret = validate_range(mm, uffdio_register.range.start,  in userfaultfd_register()
760 	start = uffdio_register.range.start;  in userfaultfd_register()
761 	end = start + uffdio_register.range.len;  in userfaultfd_register()
764 	vma = find_vma_prev(mm, start, &prev);  in userfaultfd_register()
809 	if (vma->vm_start < start)  in userfaultfd_register()
828 		if (vma->vm_start > start)  in userfaultfd_register()
829 			start = vma->vm_start;  in userfaultfd_register()
833 		prev = vma_merge(mm, prev, start, vma_end, new_flags,  in userfaultfd_register()
841 		if (vma->vm_start < start) {  in userfaultfd_register()
842 			ret = split_vma(mm, vma, start, 1);  in userfaultfd_register()
862 		start = vma->vm_end;  in userfaultfd_register()
890 	unsigned long start, end, vma_end;  in userfaultfd_unregister()  local
897 	ret = validate_range(mm, uffdio_unregister.start,  in userfaultfd_unregister()
902 	start = uffdio_unregister.start;  in userfaultfd_unregister()
903 	end = start + uffdio_unregister.len;  in userfaultfd_unregister()
906 	vma = find_vma_prev(mm, start, &prev);  in userfaultfd_unregister()
946 	if (vma->vm_start < start)  in userfaultfd_unregister()
962 		if (vma->vm_start > start)  in userfaultfd_unregister()
963 			start = vma->vm_start;  in userfaultfd_unregister()
967 		prev = vma_merge(mm, prev, start, vma_end, new_flags,  in userfaultfd_unregister()
975 		if (vma->vm_start < start) {  in userfaultfd_unregister()
976 			ret = split_vma(mm, vma, start, 1);  in userfaultfd_unregister()
996 		start = vma->vm_end;  in userfaultfd_unregister()
1021 	ret = validate_range(ctx->mm, uffdio_wake.start, uffdio_wake.len);  in userfaultfd_wake()
1025 	range.start = uffdio_wake.start;  in userfaultfd_wake()
1081 		range.start = uffdio_copy.dst;  in userfaultfd_copy()
1105 	ret = validate_range(ctx->mm, uffdio_zeropage.range.start,  in userfaultfd_zeropage()
1113 	ret = mfill_zeropage(ctx->mm, uffdio_zeropage.range.start,  in userfaultfd_zeropage()
1123 		range.start = uffdio_zeropage.range.start;  in userfaultfd_zeropage()