size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
-int memcpy_toiovec(struct iovec *iov, unsigned char *kdata, int len);
int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
int offset, int len);
int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata,
/*
* Copy kernel to iovec. Returns -EFAULT on error.
- *
- * Note: this modifies the original iovec.
- */
-
-int memcpy_toiovec(struct iovec *iov, unsigned char *kdata, int len)
-{
- while (len > 0) {
- if (iov->iov_len) {
- int copy = min_t(unsigned int, iov->iov_len, len);
- if (copy_to_user(iov->iov_base, kdata, copy))
- return -EFAULT;
- kdata += copy;
- len -= copy;
- iov->iov_len -= copy;
- iov->iov_base += copy;
- }
- iov++;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(memcpy_toiovec);
-
-/*
- * Copy kernel to iovec. Returns -EFAULT on error.
*/
int memcpy_toiovecend(const struct iovec *iov, unsigned char *kdata,