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-rw-r--r--include/linux/uio.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h
index ab5f523bc0df..b74d292b9960 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -261,7 +261,13 @@ static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
{
i->count = count;
}
-size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csump, struct iov_iter *i);
+
+struct csum_state {
+ __wsum csum;
+ size_t off;
+};
+
+size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csstate, struct iov_iter *i);
size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp,