diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 5e59723c02bd72e20d790b60fcbae5add48a480d..e2b4ce1dad6680cc54d8af516e7cf876533361fd 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -84,6 +84,8 @@ static inline int cifs_get_disposition(unsigned int flags)
 		return FILE_OVERWRITE_IF;
 	else if ((flags & O_CREAT) == O_CREAT)
 		return FILE_OPEN_IF;
+	else if ((flags & O_TRUNC) == O_TRUNC)
+		return FILE_OVERWRITE;
 	else
 		return FILE_OPEN;
 }