[PATCH v4 03/13] iov_iter: pass void csum pointer to csum_and_copy_to_iter
From: Sagi Grimberg <sagi@grimberg.me>
Date: 2018-11-27 23:16:29
Also in:
linux-block, linux-nvme
Subsystem:
library code, the rest, userspace copyin/copyout (uiovec) · Maintainers:
Andrew Morton, Linus Torvalds, Alexander Viro
From: Sagi Grimberg <redacted> 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. Signed-off-by: Sagi Grimberg <redacted> --- include/linux/uio.h | 2 +- lib/iov_iter.c | 3 ++- 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 7ebccb5c1637..db93531ca3e3 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c@@ -1432,10 +1432,11 @@ 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; sum = *csum;
--
2.17.1