#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/sched.h>
+#include <linux/timer.h>
#include <linux/writeback.h>
#include <asm/atomic.h>
struct device *dev;
+ struct timer_list laptop_mode_wb_timer;
+
#ifdef CONFIG_DEBUG_FS
struct dentry *debug_dir;
struct dentry *debug_stats;