Index: vfs_subr.c
===================================================================
--- vfs_subr.c	(wersja 207762)
+++ vfs_subr.c	(kopia robocza)
@@ -823,6 +823,19 @@
 SYSINIT(vnlru, SI_SUB_KTHREAD_UPDATE, SI_ORDER_FIRST, kproc_start,
     &vnlru_kp);
 
+static void
+vfs_lowmem(void *arg __unused)
+{
+
+	/*
+	 * On low memory condition free 1/8th of the free vnodes.
+	 */
+	mtx_lock(&vnode_free_list_mtx);
+	vnlru_free(freevnodes / 8);
+	mtx_unlock(&vnode_free_list_mtx);
+}
+EVENTHANDLER_DEFINE(vm_lowmem, vfs_lowmem, NULL, 0);
+
 /*
  * Routines having to do with the management of the vnode table.
  */