switch vfs_mkdir() and ->mkdir() to umode_t

vfs_mkdir() gets int, but immediately drops everything that might not
fit into umode_t and that's the only caller of ->mkdir()...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c
index a9f007d..77c8d80 100644
--- a/fs/ocfs2/dlmfs/dlmfs.c
+++ b/fs/ocfs2/dlmfs/dlmfs.c
@@ -488,7 +488,7 @@
 /* SMP-safe */
 static int dlmfs_mkdir(struct inode * dir,
 		       struct dentry * dentry,
-		       int mode)
+		       umode_t mode)
 {
 	int status;
 	struct inode *inode = NULL;