15 typedef size_t (*iov_step_f)(void *iter_base, size_t progress, size_t len,
17 typedef size_t (*iov_ustep_f)(void __user *iter_base, size_t progress, size_t len,
24 size_t iterate_ubuf(struct iov_iter *iter, size_t len, void *priv, void *priv2,  in iterate_ubuf()
28 	size_t progress = 0, remain;  in iterate_ubuf()
41 size_t iterate_iovec(struct iov_iter *iter, size_t len, void *priv, void *priv2,  in iterate_iovec()
45 	size_t progress = 0, skip = iter->iov_offset;  in iterate_iovec()
48 		size_t remain, consumed;  in iterate_iovec()
49 		size_t part = min(len, p->iov_len - skip);  in iterate_iovec()
75 size_t iterate_kvec(struct iov_iter *iter, size_t len, void *priv, void *priv2,  in iterate_kvec()
79 	size_t progress = 0, skip = iter->iov_offset;  in iterate_kvec()
82 		size_t remain, consumed;  in iterate_kvec()
83 		size_t part = min(len, p->iov_len - skip);  in iterate_kvec()
109 size_t iterate_bvec(struct iov_iter *iter, size_t len, void *priv, void *priv2,  in iterate_bvec()
113 	size_t progress = 0, skip = iter->iov_offset;  in iterate_bvec()
116 		size_t remain, consumed;  in iterate_bvec()
117 		size_t offset = p->bv_offset + skip, part;  in iterate_bvec()
121 			   (size_t)(p->bv_len - skip),  in iterate_bvec()
122 			   (size_t)(PAGE_SIZE - offset % PAGE_SIZE));  in iterate_bvec()
148 size_t iterate_folioq(struct iov_iter *iter, size_t len, void *priv, void *priv2,  in iterate_folioq()
153 	size_t progress = 0, skip = iter->iov_offset;  in iterate_folioq()
163 		size_t part, remain, consumed;  in iterate_folioq()
164 		size_t fsize;  in iterate_folioq()
202 size_t iterate_xarray(struct iov_iter *iter, size_t len, void *priv, void *priv2,  in iterate_xarray()
206 	size_t progress = 0;  in iterate_xarray()
213 		size_t remain, consumed, offset, part, flen;  in iterate_xarray()
228 			part = min_t(size_t, flen,  in iterate_xarray()
255 size_t iterate_discard(struct iov_iter *iter, size_t len, void *priv, void *priv2,  in iterate_discard()
258 	size_t progress = len;  in iterate_discard()
291 size_t iterate_and_advance2(struct iov_iter *iter, size_t len, void *priv,  in iterate_and_advance2()
325 size_t iterate_and_advance(struct iov_iter *iter, size_t len, void *priv,  in iterate_and_advance()
360 size_t iterate_and_advance_kernel(struct iov_iter *iter, size_t len, void *priv,  in iterate_and_advance_kernel()