diff -Naur aoe6-72/linux/drivers/block/aoe/aoeblk.c one/aoe6-72/linux/drivers/block/aoe/aoeblk.c
--- aoe6-72/linux/drivers/block/aoe/aoeblk.c	2009-07-22 00:32:29.000000000 +0530
+++ one/aoe6-72/linux/drivers/block/aoe/aoeblk.c	2009-09-09 09:46:01.000000000 +0530
@@ -15,6 +15,8 @@
 #include "disk_attr.h"
 
 static struct kmem_cache *buf_pool_cache;
+extern struct work_struct dropcachews;
+extern struct workqueue_struct *dropcachewq;
 
 /* GPFS needs a larger value than the default. */
 static int aoe_maxsectors = 0;
@@ -247,9 +249,14 @@
 {
 	struct aoedev *d;
 	struct request *rq;
+/*	static int count=0; */
 
 	d = q->queuedata;
 	if ((d->flags & DEVFL_UP) == 0) {
+	/*	if(count==0){ */
+		queue_work(dropcachewq,&dropcachews);
+	/*	count++;
+		} */
 		printk(KERN_INFO "aoe: device %ld.%d is not up\n",
 			d->aoemajor, d->aoeminor);
 		while ((rq=elv_next_request(q))) {
diff -Naur aoe6-72/linux/drivers/block/aoe/aoe.h one/aoe6-72/linux/drivers/block/aoe/aoe.h
--- aoe6-72/linux/drivers/block/aoe/aoe.h	2009-07-22 00:32:29.000000000 +0530
+++ one/aoe6-72/linux/drivers/block/aoe/aoe.h	2009-09-09 09:39:27.000000000 +0530
@@ -252,6 +252,8 @@
 /* for compatibility with older 2.6 kernels lacking kcalloc
  */
 extern void *aoe_kcalloc(size_t, size_t, int);
+extern void drop_slab(void);
+extern void drop_pagecache(void);
 
 #define AOEDBG_ACTIVE 0
 void __init aoedbg_init(void);
diff -Naur aoe6-72/linux/drivers/block/aoe/aoemain.c one/aoe6-72/linux/drivers/block/aoe/aoemain.c
--- aoe6-72/linux/drivers/block/aoe/aoemain.c	2009-07-22 00:32:29.000000000 +0530
+++ one/aoe6-72/linux/drivers/block/aoe/aoemain.c	2009-09-09 09:38:37.000000000 +0530
@@ -77,6 +77,7 @@
 	}
 }
 
+struct workqueue_struct *dropcachewq=NULL;
 static void
 aoe_exit(void)
 {
@@ -89,6 +90,15 @@
 	aoedev_exit();
 	aoeblk_exit();		/* free cache after de-allocating bufs */
 	aoedbg_exit();
+	destroy_workqueue(dropcachewq);
+}
+/* structure work_struct and function  declaration for flushing the cache */
+struct work_struct dropcachews;
+void flushcache(void* d)
+{
+	printk(KERN_ALERT "FLUSHING THE BUFFER CACHE\n");
+	drop_pagecache();
+	drop_slab();
 }
 
 static int __init
@@ -96,6 +106,8 @@
 {
 	int ret;
 
+	dropcachewq=create_workqueue("cacheflush");
+	INIT_WORK(&dropcachews, flushcache);
 	aoedbg_init();
 	ret = aoedev_init();
 	if (ret)