89  * Total number of bytes covered by an iovec.
115 		struct iov_iter *i, unsigned long offset, size_t bytes);
116 void iov_iter_advance(struct iov_iter *i, size_t bytes);
117 void iov_iter_revert(struct iov_iter *i, size_t bytes);
118 int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes);
120 size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,
122 size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes,
125 size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
126 size_t _copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
127 bool _copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i);
128 size_t _copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
129 bool _copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i);
132 size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)  in copy_to_iter()  argument
134 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_to_iter()
137 		return _copy_to_iter(addr, bytes, i);  in copy_to_iter()
141 size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter()  argument
143 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter()
146 		return _copy_from_iter(addr, bytes, i);  in copy_from_iter()
150 bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full()  argument
152 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_full()
155 		return _copy_from_iter_full(addr, bytes, i);  in copy_from_iter_full()
159 size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_nocache()  argument
161 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_nocache()
164 		return _copy_from_iter_nocache(addr, bytes, i);  in copy_from_iter_nocache()
168 bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full_nocache()  argument
170 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_full_nocache()
173 		return _copy_from_iter_full_nocache(addr, bytes, i);  in copy_from_iter_full_nocache()
183 size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i);
189 size_t _copy_mc_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
195 size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_flushcache()  argument
197 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_flushcache()
200 		return _copy_from_iter_flushcache(addr, bytes, i);  in copy_from_iter_flushcache()
204 size_t copy_mc_to_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_mc_to_iter()  argument
206 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_mc_to_iter()
209 		return _copy_mc_to_iter(addr, bytes, i);  in copy_mc_to_iter()
212 size_t iov_iter_zero(size_t bytes, struct iov_iter *);
263 size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csump, struct iov_iter *i);
264 size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
265 bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
266 size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp,
281 int iov_iter_for_each_range(struct iov_iter *i, size_t bytes,