Index: linux-2.6/mm/vmalloc.c
===================================================================
--- linux-2.6.orig/mm/vmalloc.c
+++ linux-2.6/mm/vmalloc.c
@@ -531,6 +531,17 @@ static void purge_vmap_area_lazy(void)
 	__purge_vmap_area_lazy(&start, &end, 0, 0);
 }
 
+static void deferred_purge(struct work_struct *work)
+{
+	purge_vmap_area_lazy();
+}
+
+static struct work_struct purge_work;
+static void kick_purge_vmap_area_lazy(void)
+{
+	schedule_work(&purge_work);
+}
+
 /*
  * Free and unmap a vmap area
  */
@@ -539,7 +550,7 @@ static void free_unmap_vmap_area(struct 
 	va->flags |= VM_LAZY_FREE;
 	atomic_add((va->va_end - va->va_start) >> PAGE_SHIFT, &vmap_lazy_nr);
 	if (unlikely(atomic_read(&vmap_lazy_nr) > lazy_max_pages()))
-		purge_vmap_area_lazy();
+		kick_purge_vmap_area_lazy();
 }
 
 static struct vmap_area *find_vmap_area(unsigned long addr)
@@ -938,6 +949,7 @@ void __init vmalloc_init(void)
 {
 	int i;
 
+	INIT_WORK(&purge_work, deferred_purge);
 	for_each_possible_cpu(i) {
 		struct vmap_block_queue *vbq;