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>

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);
 
+
 #endif