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/affs/namei.c b/fs/affs/namei.c
index 780a11d..7bb7660 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -285,12 +285,12 @@
 }
 
 int
-affs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 {
 	struct inode		*inode;
 	int			 error;
 
-	pr_debug("AFFS: mkdir(%lu,\"%.*s\",0%o)\n",dir->i_ino,
+	pr_debug("AFFS: mkdir(%lu,\"%.*s\",0%ho)\n",dir->i_ino,
 		 (int)dentry->d_name.len,dentry->d_name.name,mode);
 
 	inode = affs_new_inode(dir);