diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 4045bdc..6e7fa62 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -17,9 +17,30 @@
 #include <linux/list.h>
 #include <linux/mutex.h>
 #include <asm/uaccess.h>
+#include <linux/jiffies.h>
+#include <asm/atomic.h>
 
 #include "sysfs.h"
 
+static unsigned long last_jiffies = INITIAL_JIFFIES;
+static atomic_t sysfs_page_cnt = ATOMIC_INIT(0);
+
+static void sysfs_page_inc(void)
+{
+	atomic_inc(&sysfs_page_cnt);
+
+	if (time_before(jiffies, last_jiffies + 10 * HZ))
+		return;
+
+	last_jiffies = jiffies;
+	printk("XXX sysfs_page_cnt=%d\n", atomic_read(&sysfs_page_cnt));
+}
+
+static void sysfs_page_dec(void)
+{
+	atomic_dec(&sysfs_page_cnt);
+}
+
 #define to_sattr(a) container_of(a,struct subsys_attribute, attr)
 
 /*
@@ -105,8 +126,10 @@ static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer
 	int ret = 0;
 	ssize_t count;
 
-	if (!buffer->page)
+	if (!buffer->page) {
 		buffer->page = (char *) get_zeroed_page(GFP_KERNEL);
+		sysfs_page_inc();
+	}
 	if (!buffer->page)
 		return -ENOMEM;
 
@@ -188,8 +211,10 @@ fill_write_buffer(struct sysfs_buffer * buffer, const char __user * buf, size_t
 {
 	int error;
 
-	if (!buffer->page)
+	if (!buffer->page) {
 		buffer->page = (char *)get_zeroed_page(GFP_KERNEL);
+		sysfs_page_inc();
+	}
 	if (!buffer->page)
 		return -ENOMEM;
 
@@ -434,8 +459,10 @@ static int sysfs_release(struct inode *inode, struct file *filp)
 
 	sysfs_put_open_dirent(sd, buffer);
 
-	if (buffer->page)
+	if (buffer->page) {
 		free_page((unsigned long)buffer->page);
+		sysfs_page_dec();
+	}
 	kfree(buffer);
 
 	return 0;