107  * Total number of bytes covered by an iovec.
133 				  size_t bytes, struct iov_iter *i);
134 void iov_iter_advance(struct iov_iter *i, size_t bytes);
135 void iov_iter_revert(struct iov_iter *i, size_t bytes);
136 int iov_iter_fault_in_readable(const struct iov_iter *i, size_t bytes);
138 size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,
140 size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes,
143 size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
144 size_t _copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
145 size_t _copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
148 size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)  in copy_to_iter()  argument
150 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_to_iter()
153 		return _copy_to_iter(addr, bytes, i);  in copy_to_iter()
157 size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter()  argument
159 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter()
162 		return _copy_from_iter(addr, bytes, i);  in copy_from_iter()
166 bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full()  argument
168 	size_t copied = copy_from_iter(addr, bytes, i);  in copy_from_iter_full()
169 	if (likely(copied == bytes))  in copy_from_iter_full()
176 size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_nocache()  argument
178 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_nocache()
181 		return _copy_from_iter_nocache(addr, bytes, i);  in copy_from_iter_nocache()
185 bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full_nocache()  argument
187 	size_t copied = copy_from_iter_nocache(addr, bytes, i);  in copy_from_iter_full_nocache()
188 	if (likely(copied == bytes))  in copy_from_iter_full_nocache()
201 size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i);
207 size_t _copy_mc_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
213 size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_flushcache()  argument
215 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_flushcache()
218 		return _copy_from_iter_flushcache(addr, bytes, i);  in copy_from_iter_flushcache()
222 size_t copy_mc_to_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_mc_to_iter()  argument
224 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_mc_to_iter()
227 		return _copy_mc_to_iter(addr, bytes, i);  in copy_mc_to_iter()
230 size_t iov_iter_zero(size_t bytes, struct iov_iter *);
290 size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csstate, struct iov_iter *i);
291 size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
294 bool csum_and_copy_from_iter_full(void *addr, size_t bytes,  in csum_and_copy_from_iter_full()  argument
297 	size_t copied = csum_and_copy_from_iter(addr, bytes, csum, i);  in csum_and_copy_from_iter_full()
298 	if (likely(copied == bytes))  in csum_and_copy_from_iter_full()
303 size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp,