[PATCH] Pad statvfs in compat layer

glibc assumes that the padding in statvfs() is zeroed. Do this
in the compat layer too for future safety.

fs/compat.c

@@ -120,7 +120,12 @@ static int put_compat_statfs(struct compat_statfs *ubuf, struct kstatfs *kbuf)
 	    __put_user(kbuf->f_namelen, &ubuf->f_namelen) ||
 	    __put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
 	    __put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) ||
-	    __put_user(kbuf->f_frsize, &ubuf->f_frsize))
+	    __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
+	    __put_user(0, &ubuf->f_spare[0]) || 
+	    __put_user(0, &ubuf->f_spare[1]) || 
+	    __put_user(0, &ubuf->f_spare[2]) || 
+	    __put_user(0, &ubuf->f_spare[3]) || 
+	    __put_user(0, &ubuf->f_spare[4]))
 		return -EFAULT;
 	return 0;
 }