103  * Total number of bytes covered by an iovec.
129 		struct iov_iter *i, unsigned long offset, size_t bytes);
130 void iov_iter_advance(struct iov_iter *i, size_t bytes);
131 void iov_iter_revert(struct iov_iter *i, size_t bytes);
132 int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes);
134 size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,
136 size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes,
139 size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
140 size_t _copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
141 bool _copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i);
142 size_t _copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
143 bool _copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i);
146 size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)  in copy_to_iter()  argument
148 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_to_iter()
151 		return _copy_to_iter(addr, bytes, i);  in copy_to_iter()
155 size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter()  argument
157 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter()
160 		return _copy_from_iter(addr, bytes, i);  in copy_from_iter()
164 bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full()  argument
166 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_full()
169 		return _copy_from_iter_full(addr, bytes, i);  in copy_from_iter_full()
173 size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_nocache()  argument
175 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_nocache()
178 		return _copy_from_iter_nocache(addr, bytes, i);  in copy_from_iter_nocache()
182 bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full_nocache()  argument
184 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_full_nocache()
187 		return _copy_from_iter_full_nocache(addr, bytes, i);  in copy_from_iter_full_nocache()
197 size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i);
203 size_t _copy_mc_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
209 size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_flushcache()  argument
211 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_flushcache()
214 		return _copy_from_iter_flushcache(addr, bytes, i);  in copy_from_iter_flushcache()
218 size_t copy_mc_to_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_mc_to_iter()  argument
220 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_mc_to_iter()
223 		return _copy_mc_to_iter(addr, bytes, i);  in copy_mc_to_iter()
226 size_t iov_iter_zero(size_t bytes, struct iov_iter *);
284 size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csstate, struct iov_iter *i);
285 size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
286 bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
287 size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp,
302 int iov_iter_for_each_range(struct iov_iter *i, size_t bytes,