90  * Total number of bytes covered by an iovec.
116 		struct iov_iter *i, unsigned long offset, size_t bytes);
117 void iov_iter_advance(struct iov_iter *i, size_t bytes);
118 void iov_iter_revert(struct iov_iter *i, size_t bytes);
119 int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes);
121 size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,
123 size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes,
126 size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
127 size_t _copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
128 bool _copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i);
129 size_t _copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
130 bool _copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i);
133 size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)  in copy_to_iter()  argument
135 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_to_iter()
138 		return _copy_to_iter(addr, bytes, i);  in copy_to_iter()
142 size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter()  argument
144 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter()
147 		return _copy_from_iter(addr, bytes, i);  in copy_from_iter()
151 bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full()  argument
153 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_full()
156 		return _copy_from_iter_full(addr, bytes, i);  in copy_from_iter_full()
160 size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_nocache()  argument
162 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_nocache()
165 		return _copy_from_iter_nocache(addr, bytes, i);  in copy_from_iter_nocache()
169 bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full_nocache()  argument
171 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_full_nocache()
174 		return _copy_from_iter_full_nocache(addr, bytes, i);  in copy_from_iter_full_nocache()
184 size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i);
190 size_t _copy_to_iter_mcsafe(const void *addr, size_t bytes, struct iov_iter *i);
196 size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_flushcache()  argument
198 	if (unlikely(!check_copy_size(addr, bytes, false)))  in copy_from_iter_flushcache()
201 		return _copy_from_iter_flushcache(addr, bytes, i);  in copy_from_iter_flushcache()
205 size_t copy_to_iter_mcsafe(void *addr, size_t bytes, struct iov_iter *i)  in copy_to_iter_mcsafe()  argument
207 	if (unlikely(!check_copy_size(addr, bytes, true)))  in copy_to_iter_mcsafe()
210 		return _copy_to_iter_mcsafe(addr, bytes, i);  in copy_to_iter_mcsafe()
213 size_t iov_iter_zero(size_t bytes, struct iov_iter *);
264 size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csump, struct iov_iter *i);
265 size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
266 bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
267 size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp,
284 int iov_iter_for_each_range(struct iov_iter *i, size_t bytes,