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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-13 00:49:58 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-13 00:49:58 (GMT) |
commit | ca9706a282943899981e83604f2ed13e88ce4239 (patch) | |
tree | 22b64fc81dd8d86e563e3d19c3d45abab87f03c6 | |
parent | fce205e9da8e063aa1cf3d6583c1a9ed2b82f3f0 (diff) | |
parent | e12675853d717ce8de7d91089cc1a95bb8525f6c (diff) | |
download | linux-ca9706a282943899981e83604f2ed13e88ce4239.tar.xz |
Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull iov_iter infrastructure updates from Al Viro:
"A couple of iov_iter updates"
* 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
iov_iter: export import_single_range()
iov_iter: constify {csum_and_,}copy_to_iter()
-rw-r--r-- | include/linux/uio.h | 4 | ||||
-rw-r--r-- | lib/iov_iter.c | 11 |
2 files changed, 8 insertions, 7 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h index 8b01e1c..fd9bcfe 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 75232ad..5fecddc 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)) @@ -849,3 +849,4 @@ int import_single_range(int rw, void __user *buf, size_t len, iov_iter_init(i, rw, iov, 1, len); return 0; } +EXPORT_SYMBOL(import_single_range); |