From 36f7a8a4cd2e99b7172ab8ed2130c5c841466824 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 6 Dec 2015 16:49:22 -0500 Subject: [PATCH] iov_iter: constify {csum_and_,}copy_to_iter() Signed-off-by: Al Viro --- include/linux/uio.h | 4 ++-- lib/iov_iter.c | 10 +++++----- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/include/linux/uio.h b/include/linux/uio.h index 8b01e1c3c614..fd9bcfedad42 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -82,7 +82,7 @@ size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes, struct iov_iter *i); size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes, struct iov_iter *i); -size_t copy_to_iter(void *addr, size_t bytes, struct iov_iter *i); +size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i); size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i); size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i); size_t iov_iter_zero(size_t bytes, struct iov_iter *); @@ -145,7 +145,7 @@ static inline void iov_iter_reexpand(struct iov_iter *i, size_t count) { i->count = count; } -size_t csum_and_copy_to_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i); +size_t csum_and_copy_to_iter(const void *addr, size_t bytes, __wsum *csum, struct iov_iter *i); size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i); int import_iovec(int type, const struct iovec __user * uvector, diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 75232ad0a5e7..bc6d85cc2036 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -369,7 +369,7 @@ static void memcpy_from_page(char *to, struct page *page, size_t offset, size_t kunmap_atomic(from); } -static void memcpy_to_page(struct page *page, size_t offset, char *from, size_t len) +static void memcpy_to_page(struct page *page, size_t offset, const char *from, size_t len) { char *to = kmap_atomic(page); memcpy(to + offset, from, len); @@ -383,9 +383,9 @@ static void memzero_page(struct page *page, size_t offset, size_t len) kunmap_atomic(addr); } -size_t copy_to_iter(void *addr, size_t bytes, struct iov_iter *i) +size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i) { - char *from = addr; + const char *from = addr; if (unlikely(bytes > i->count)) bytes = i->count; @@ -704,10 +704,10 @@ size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, } EXPORT_SYMBOL(csum_and_copy_from_iter); -size_t csum_and_copy_to_iter(void *addr, size_t bytes, __wsum *csum, +size_t csum_and_copy_to_iter(const void *addr, size_t bytes, __wsum *csum, struct iov_iter *i) { - char *from = addr; + const char *from = addr; __wsum sum, next; size_t off = 0; if (unlikely(bytes > i->count)) -- 2.30.2