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authorSagi Grimberg <sagi@lightbitslabs.com>2018-12-04 04:52:07 +0300
committerChristoph Hellwig <hch@lst.de>2018-12-13 11:58:53 +0300
commitcb002d074dabfaa2248507fd9478d16a542e4f1e (patch)
tree9aac7c054f558aedd9d57f1dd19fdc8e3b20fa26
parent0fc07791bc775478d9450ca9c6c674b45f6c1998 (diff)
downloadlinux-cb002d074dabfaa2248507fd9478d16a542e4f1e.tar.xz
iov_iter: pass void csum pointer to csum_and_copy_to_iter
The single caller to csum_and_copy_to_iter is skb_copy_and_csum_datagram and we are trying to unite its logic with skb_copy_datagram_iter by passing a callback to the copy function that we want to apply. Thus, we need to make the checksum pointer private to the function. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sagi Grimberg <sagi@lightbitslabs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
-rw-r--r--include/linux/uio.h2
-rw-r--r--lib/iov_iter.c3
2 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h
index 55ce99ddb912..41d1f8d3313d 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -266,7 +266,7 @@ 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, __wsum *csum, struct iov_iter *i);
+size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csump, 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);
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index 54c248526b55..63a8999a234d 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1464,10 +1464,11 @@ bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum,
}
EXPORT_SYMBOL(csum_and_copy_from_iter_full);
-size_t csum_and_copy_to_iter(const void *addr, size_t bytes, __wsum *csum,
+size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *csump,
struct iov_iter *i)
{
const char *from = addr;
+ __wsum *csum = csump;
__wsum sum, next;
size_t off = 0;