43 struct iov_iter {  struct
91 	struct iov_iter		iter;  argument
94 static inline const struct iovec *iter_iov(const struct iov_iter *iter)  in iter_iov()
104 static inline enum iter_type iov_iter_type(const struct iov_iter *i)  in iov_iter_type()
109 static inline void iov_iter_save_state(struct iov_iter *iter,  in iov_iter_save_state()
117 static inline bool iter_is_ubuf(const struct iov_iter *i)  in iter_is_ubuf()
122 static inline bool iter_is_iovec(const struct iov_iter *i)  in iter_is_iovec()
127 static inline bool iov_iter_is_kvec(const struct iov_iter *i)  in iov_iter_is_kvec()
132 static inline bool iov_iter_is_bvec(const struct iov_iter *i)  in iov_iter_is_bvec()
137 static inline bool iov_iter_is_discard(const struct iov_iter *i)  in iov_iter_is_discard()
142 static inline bool iov_iter_is_folioq(const struct iov_iter *i)  in iov_iter_is_folioq()
147 static inline bool iov_iter_is_xarray(const struct iov_iter *i)  in iov_iter_is_xarray()
152 static inline unsigned char iov_iter_rw(const struct iov_iter *i)  in iov_iter_rw()
157 static inline bool user_backed_iter(const struct iov_iter *i)  in user_backed_iter()
180 				  size_t bytes, struct iov_iter *i);
181 void iov_iter_advance(struct iov_iter *i, size_t bytes);
182 void iov_iter_revert(struct iov_iter *i, size_t bytes);
183 size_t fault_in_iov_iter_readable(const struct iov_iter *i, size_t bytes);
184 size_t fault_in_iov_iter_writeable(const struct iov_iter *i, size_t bytes);
185 size_t iov_iter_single_seg_count(const struct iov_iter *i);
187 			 struct iov_iter *i);
189 			 struct iov_iter *i);
191 size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
192 size_t _copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
193 size_t _copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
196 		size_t bytes, struct iov_iter *i)  in copy_folio_to_iter()
202 					  size_t bytes, struct iov_iter *i)  in copy_folio_from_iter()
208 		size_t offset, size_t bytes, struct iov_iter *i)  in copy_folio_from_iter_atomic()
214 				 size_t bytes, struct iov_iter *i);
217 size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)  in copy_to_iter()
225 size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter()
233 bool copy_to_iter_full(const void *addr, size_t bytes, struct iov_iter *i)  in copy_to_iter_full()
243 bool copy_from_iter_full(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full()
253 size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_nocache()
261 bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i)  in copy_from_iter_full_nocache()
277 size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i);
283 size_t _copy_mc_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
288 size_t iov_iter_zero(size_t bytes, struct iov_iter *);
289 bool iov_iter_is_aligned(const struct iov_iter *i, unsigned addr_mask,
291 unsigned long iov_iter_alignment(const struct iov_iter *i);
292 unsigned long iov_iter_gap_alignment(const struct iov_iter *i);
293 void iov_iter_init(struct iov_iter *i, unsigned int direction, const struct iovec *iov,
295 void iov_iter_kvec(struct iov_iter *i, unsigned int direction, const struct kvec *kvec,
297 void iov_iter_bvec(struct iov_iter *i, unsigned int direction, const struct bio_vec *bvec,
299 void iov_iter_discard(struct iov_iter *i, unsigned int direction, size_t count);
300 void iov_iter_folio_queue(struct iov_iter *i, unsigned int direction,
303 void iov_iter_xarray(struct iov_iter *i, unsigned int direction, struct xarray *xarray,
305 ssize_t iov_iter_get_pages2(struct iov_iter *i, struct page **pages,
307 ssize_t iov_iter_get_pages_alloc2(struct iov_iter *i, struct page ***pages,
309 int iov_iter_npages(const struct iov_iter *i, int maxpages);
310 void iov_iter_restore(struct iov_iter *i, struct iov_iter_state *state);
312 const void *dup_iter(struct iov_iter *new, struct iov_iter *old, gfp_t flags);
314 static inline size_t iov_iter_count(const struct iov_iter *i)  in iov_iter_count()
325 static inline void iov_iter_truncate(struct iov_iter *i, u64 count)  in iov_iter_truncate()
341 static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)  in iov_iter_reexpand()
347 iov_iter_npages_cap(struct iov_iter *i, int maxpages, size_t max_bytes)  in iov_iter_npages_cap()
368 		 struct iov_iter *i);
371 		 struct iov_iter *i, bool compat);
372 int import_ubuf(int type, void __user *buf, size_t len, struct iov_iter *i);
374 static inline void iov_iter_ubuf(struct iov_iter *i, unsigned int direction,  in iov_iter_ubuf()
378 	*i = (struct iov_iter) {  in iov_iter_ubuf()
390 ssize_t iov_iter_extract_pages(struct iov_iter *i, struct page ***pages,
411 static inline bool iov_iter_extract_will_pin(const struct iov_iter *iter)  in iov_iter_extract_will_pin()
417 ssize_t extract_iter_to_sg(struct iov_iter *iter, size_t len,