14 #define iterate_iovec(i, n, __v, __p, skip, STEP) {	\  argument
18 	__v.iov_len = min(n, __p->iov_len - skip);	\
20 		__v.iov_base = __p->iov_base + skip;	\
23 		skip += __v.iov_len;			\
36 		skip = __v.iov_len;			\
42 #define iterate_kvec(i, n, __v, __p, skip, STEP) {	\  argument
45 	__v.iov_len = min(n, __p->iov_len - skip);	\
47 		__v.iov_base = __p->iov_base + skip;	\
49 		skip += __v.iov_len;			\
59 		skip = __v.iov_len;			\
65 #define iterate_bvec(i, n, __v, __bi, skip, STEP) {	\  argument
68 	__start.bi_bvec_done = skip;			\
79 		size_t skip = i->iov_offset;			\
83 			iterate_bvec(i, n, v, __bi, skip, (B))	\
87 			iterate_kvec(i, n, v, kvec, skip, (K))	\
92 			iterate_iovec(i, n, v, iov, skip, (I))	\
101 		size_t skip = i->iov_offset;			\
106 			iterate_bvec(i, n, v, __bi, skip, (B))	\
109 			skip = __bi.bi_bvec_done;		\
113 			iterate_kvec(i, n, v, kvec, skip, (K))	\
114 			if (skip == kvec->iov_len) {		\
116 				skip = 0;			\
121 			skip += n;				\
125 			iterate_iovec(i, n, v, iov, skip, (I))	\
126 			if (skip == iov->iov_len) {		\
128 				skip = 0;			\
134 		i->iov_offset = skip;				\
159 	size_t skip, copy, left, wanted;  in copy_page_to_iter_iovec()  local
173 	skip = i->iov_offset;  in copy_page_to_iter_iovec()
174 	buf = iov->iov_base + skip;  in copy_page_to_iter_iovec()
175 	copy = min(bytes, iov->iov_len - skip);  in copy_page_to_iter_iovec()
184 		skip += copy;  in copy_page_to_iter_iovec()
194 			skip = copy;  in copy_page_to_iter_iovec()
205 		copy = min(bytes, iov->iov_len - skip);  in copy_page_to_iter_iovec()
213 	skip += copy;  in copy_page_to_iter_iovec()
222 		skip = copy;  in copy_page_to_iter_iovec()
229 	if (skip == iov->iov_len) {  in copy_page_to_iter_iovec()
231 		skip = 0;  in copy_page_to_iter_iovec()
236 	i->iov_offset = skip;  in copy_page_to_iter_iovec()
243 	size_t skip, copy, left, wanted;  in copy_page_from_iter_iovec()  local
257 	skip = i->iov_offset;  in copy_page_from_iter_iovec()
258 	buf = iov->iov_base + skip;  in copy_page_from_iter_iovec()
259 	copy = min(bytes, iov->iov_len - skip);  in copy_page_from_iter_iovec()
268 		skip += copy;  in copy_page_from_iter_iovec()
278 			skip = copy;  in copy_page_from_iter_iovec()
289 		copy = min(bytes, iov->iov_len - skip);  in copy_page_from_iter_iovec()
297 	skip += copy;  in copy_page_from_iter_iovec()
306 		skip = copy;  in copy_page_from_iter_iovec()
313 	if (skip == iov->iov_len) {  in copy_page_from_iter_iovec()
315 		skip = 0;  in copy_page_from_iter_iovec()
320 	i->iov_offset = skip;  in copy_page_from_iter_iovec()
420 	size_t skip = i->iov_offset;  in iov_iter_fault_in_readable()  local
426 		iterate_iovec(i, bytes, v, iov, skip, ({  in iov_iter_fault_in_readable()