path: root/include/linux/uio.h
diff options
authorAl Viro <viro@zeniv.linux.org.uk>2014-03-05 13:50:45 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2014-05-06 17:32:47 -0400
commit886a39115005ced8b15ab067c9c2a8d546b40a5e (patch)
treecb72af0480369f31a449aa7a8451d407315c2bf3 /include/linux/uio.h
parent26978b8b4d83c46f4310b253db70fa9e65149e7c (diff)
new primitive: iov_iter_alignment()
returns the value aligned as badly as the worst remaining segment in iov_iter is. Use instead of open-coded equivalents. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/uio.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h
index abbe83ded630..4ee17413fe1b 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -67,6 +67,7 @@ int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes);
size_t iov_iter_single_seg_count(const struct iov_iter *i);
size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,
struct iov_iter *i);
+unsigned long iov_iter_alignment(const struct iov_iter *i);
static inline void iov_iter_init(struct iov_iter *i,
const struct iovec *iov, unsigned long nr_segs,
@@ -88,4 +89,5 @@ static inline size_t iov_iter_count(struct iov_iter *i)
int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
int memcpy_toiovec(struct iovec *iov, unsigned char *kdata, int len);