1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/uio.h b/include/linux/uio.h
index 4876e9f2a58f..532f59d0adbb 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -82,6 +82,12 @@ static inline size_t iov_iter_count(struct iov_iter *i)
         return i->count;
 }
 
+static inline void iov_iter_truncate(struct iov_iter *i, size_t count)
+{
+        if (i->count > count)
+                i->count = count;
+}
+
 int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
 int memcpy_toiovec(struct iovec *iov, unsigned char *kdata, int len);