extfrag_debug_root 2136 mm/vmstat.c    	struct dentry *extfrag_debug_root;
extfrag_debug_root 2138 mm/vmstat.c    	extfrag_debug_root = debugfs_create_dir("extfrag", NULL);
extfrag_debug_root 2140 mm/vmstat.c    	debugfs_create_file("unusable_index", 0444, extfrag_debug_root, NULL,
extfrag_debug_root 2143 mm/vmstat.c    	debugfs_create_file("extfrag_index", 0444, extfrag_debug_root, NULL,