copy_from_iter_nocache()

			 struct iov_iter *i);

size_t copy_to_iter(void *addr, size_t bytes, struct iov_iter *i);

size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);

size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);

size_t iov_iter_zero(size_t bytes, struct iov_iter *);

unsigned long iov_iter_alignment(const struct iov_iter *i);

void iov_iter_init(struct iov_iter *i, int direction, const struct iovec *iov,

}

EXPORT_SYMBOL(copy_from_iter);

size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i)

{

	char *to = addr;

	if (unlikely(bytes > i->count))

		bytes = i->count;

	if (unlikely(!bytes))

		return 0;

	iterate_and_advance(i, bytes, v,

		__copy_from_user_nocache((to += v.iov_len) - v.iov_len,

					 v.iov_base, v.iov_len),

		memcpy_from_page((to += v.bv_len) - v.bv_len, v.bv_page,

				 v.bv_offset, v.bv_len),

		memcpy((to += v.iov_len) - v.iov_len, v.iov_base, v.iov_len)

	)

	return bytes;

}

EXPORT_SYMBOL(copy_from_iter_nocache);

size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,

			 struct iov_iter *i)

{