Index: sys/kern/vfs_subr.c
===================================================================
--- sys/kern/vfs_subr.c
+++ sys/kern/vfs_subr.c
@@ -156,6 +156,10 @@
 SYSCTL_INT(_vfs, OID_AUTO, vlru_allow_cache_src, CTLFLAG_RW,
     &vlru_allow_cache_src, 0, "Allow vlru to reclaim source vnode");
 
+static u_long recycles_count;
+SYSCTL_ULONG(_vfs, OID_AUTO, recycles, CTLFLAG_RW, &recycles_count, 0,
+    "Number of vnodes recycled");
+
 /*
  * Various variables used for debugging the new implementation of
  * reassignbuf().
@@ -988,6 +992,7 @@
 		    __func__, vp);
 		return (EBUSY);
 	}
+	atomic_add_long(&recycles_count, 1);
 	if ((vp->v_iflag & VI_DOOMED) == 0)
 		vgonel(vp);
 	VOP_UNLOCK(vp, LK_INTERLOCK);