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iov_iter: pass void csum pointer to csum_and_copy_to_iter

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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>
This commit is contained in:
Sagi Grimberg
2018-12-03 17:52:07 -08:00
committed by Christoph Hellwig
parent 0fc07791bc
commit cb002d074d
2 changed files with 3 additions and 2 deletions
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3
lib/iov_iter.c
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@@ -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;