510 void iov_iter_init(struct iov_iter *i, unsigned int direction,  in iov_iter_init()  argument
514 	WARN_ON(direction & ~(READ | WRITE));  in iov_iter_init()
518 		.data_source = direction,  in iov_iter_init()
1181 void iov_iter_kvec(struct iov_iter *i, unsigned int direction,  in iov_iter_kvec()  argument
1185 	WARN_ON(direction & ~(READ | WRITE));  in iov_iter_kvec()
1188 		.data_source = direction,  in iov_iter_kvec()
1197 void iov_iter_bvec(struct iov_iter *i, unsigned int direction,  in iov_iter_bvec()  argument
1201 	WARN_ON(direction & ~(READ | WRITE));  in iov_iter_bvec()
1204 		.data_source = direction,  in iov_iter_bvec()
1213 void iov_iter_pipe(struct iov_iter *i, unsigned int direction,  in iov_iter_pipe()  argument
1217 	BUG_ON(direction != READ);  in iov_iter_pipe()
1244 void iov_iter_xarray(struct iov_iter *i, unsigned int direction,  in iov_iter_xarray()  argument
1247 	BUG_ON(direction & ~1);  in iov_iter_xarray()
1250 		.data_source = direction,  in iov_iter_xarray()
1268 void iov_iter_discard(struct iov_iter *i, unsigned int direction, size_t count)  in iov_iter_discard()  argument
1270 	BUG_ON(direction != READ);  in iov_iter_discard()