141 	size_t skip, copy, left, wanted;  in copy_page_to_iter_iovec()  local
156 	copy = min(bytes, iov->iov_len - skip);  in copy_page_to_iter_iovec()
158 	if (!fault_in_pages_writeable(buf, copy)) {  in copy_page_to_iter_iovec()
163 		left = __copy_to_user_inatomic(buf, from, copy);  in copy_page_to_iter_iovec()
164 		copy -= left;  in copy_page_to_iter_iovec()
165 		skip += copy;  in copy_page_to_iter_iovec()
166 		from += copy;  in copy_page_to_iter_iovec()
167 		bytes -= copy;  in copy_page_to_iter_iovec()
172 			copy = min(bytes, iov->iov_len);  in copy_page_to_iter_iovec()
173 			left = __copy_to_user_inatomic(buf, from, copy);  in copy_page_to_iter_iovec()
174 			copy -= left;  in copy_page_to_iter_iovec()
175 			skip = copy;  in copy_page_to_iter_iovec()
176 			from += copy;  in copy_page_to_iter_iovec()
177 			bytes -= copy;  in copy_page_to_iter_iovec()
184 		buf += copy;  in copy_page_to_iter_iovec()
186 		copy = min(bytes, iov->iov_len - skip);  in copy_page_to_iter_iovec()
191 	left = __copy_to_user(buf, from, copy);  in copy_page_to_iter_iovec()
192 	copy -= left;  in copy_page_to_iter_iovec()
193 	skip += copy;  in copy_page_to_iter_iovec()
194 	from += copy;  in copy_page_to_iter_iovec()
195 	bytes -= copy;  in copy_page_to_iter_iovec()
199 		copy = min(bytes, iov->iov_len);  in copy_page_to_iter_iovec()
200 		left = __copy_to_user(buf, from, copy);  in copy_page_to_iter_iovec()
201 		copy -= left;  in copy_page_to_iter_iovec()
202 		skip = copy;  in copy_page_to_iter_iovec()
203 		from += copy;  in copy_page_to_iter_iovec()
204 		bytes -= copy;  in copy_page_to_iter_iovec()
222 	size_t skip, copy, left, wanted;  in copy_page_from_iter_iovec()  local
237 	copy = min(bytes, iov->iov_len - skip);  in copy_page_from_iter_iovec()
239 	if (!fault_in_pages_readable(buf, copy)) {  in copy_page_from_iter_iovec()
244 		left = __copy_from_user_inatomic(to, buf, copy);  in copy_page_from_iter_iovec()
245 		copy -= left;  in copy_page_from_iter_iovec()
246 		skip += copy;  in copy_page_from_iter_iovec()
247 		to += copy;  in copy_page_from_iter_iovec()
248 		bytes -= copy;  in copy_page_from_iter_iovec()
253 			copy = min(bytes, iov->iov_len);  in copy_page_from_iter_iovec()
254 			left = __copy_from_user_inatomic(to, buf, copy);  in copy_page_from_iter_iovec()
255 			copy -= left;  in copy_page_from_iter_iovec()
256 			skip = copy;  in copy_page_from_iter_iovec()
257 			to += copy;  in copy_page_from_iter_iovec()
258 			bytes -= copy;  in copy_page_from_iter_iovec()
265 		buf += copy;  in copy_page_from_iter_iovec()
267 		copy = min(bytes, iov->iov_len - skip);  in copy_page_from_iter_iovec()
272 	left = __copy_from_user(to, buf, copy);  in copy_page_from_iter_iovec()
273 	copy -= left;  in copy_page_from_iter_iovec()
274 	skip += copy;  in copy_page_from_iter_iovec()
275 	to += copy;  in copy_page_from_iter_iovec()
276 	bytes -= copy;  in copy_page_from_iter_iovec()
280 		copy = min(bytes, iov->iov_len);  in copy_page_from_iter_iovec()
281 		left = __copy_from_user(to, buf, copy);  in copy_page_from_iter_iovec()
282 		copy -= left;  in copy_page_from_iter_iovec()
283 		skip = copy;  in copy_page_from_iter_iovec()
284 		to += copy;  in copy_page_from_iter_iovec()
285 		bytes -= copy;  in copy_page_from_iter_iovec()