104 	int ret = 0;  in hmm_invalidate_range_start()  local
119 		ret = -EAGAIN;  in hmm_invalidate_range_start()
131 			ret = -EAGAIN;  in hmm_invalidate_range_start()
138 	if (ret)  in hmm_invalidate_range_start()
140 	return ret;  in hmm_invalidate_range_start()
230 	vm_fault_t ret;  in hmm_vma_do_fault()  local
240 	ret = handle_mm_fault(vma, addr, flags);  in hmm_vma_do_fault()
241 	if (ret & VM_FAULT_RETRY) {  in hmm_vma_do_fault()
245 	if (ret & VM_FAULT_ERROR)  in hmm_vma_do_fault()
301 			int ret;  in hmm_vma_walk_hole_()  local
303 			ret = hmm_vma_do_fault(walk, addr, write_fault,  in hmm_vma_walk_hole_()
305 			if (ret != -EBUSY)  in hmm_vma_walk_hole_()
306 				return ret;  in hmm_vma_walk_hole_()
664 	int ret;  in hmm_vma_walk_pud()  local
714 		ret = hmm_vma_walk_pmd(pmdp, addr, next, walk);  in hmm_vma_walk_pud()
715 		if (ret)  in hmm_vma_walk_pud()
716 			return ret;  in hmm_vma_walk_pud()
738 	int ret = 0;  in hmm_vma_walk_hugetlb_entry()  local
751 		ret = -ENOENT;  in hmm_vma_walk_hugetlb_entry()
764 	if (ret == -ENOENT)  in hmm_vma_walk_hugetlb_entry()
767 	return ret;  in hmm_vma_walk_hugetlb_entry()
897 	int ret;  in hmm_range_fault()  local
931 			ret = walk_page_range(vma->vm_mm, start, end,  in hmm_range_fault()
936 		} while (ret == -EBUSY && range->valid);  in hmm_range_fault()
938 		if (ret) {  in hmm_range_fault()
944 			return ret;  in hmm_range_fault()
968 	long ret;  in hmm_range_dma_map()  local
970 	ret = hmm_range_fault(range, flags);  in hmm_range_dma_map()
971 	if (ret <= 0)  in hmm_range_dma_map()
972 		return ret ? ret : -EBUSY;  in hmm_range_dma_map()
995 			ret = -EBUSY;  in hmm_range_dma_map()
1005 			ret = -EFAULT;  in hmm_range_dma_map()
1034 	return ret;  in hmm_range_dma_map()