2 files changed, 5 insertions, 0 deletions

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 7529b2904742..32f34e6184ce 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -736,6 +736,7 @@ vnlru_proc(void)
 		}
 		mtx_unlock(&mountlist_mtx);
 		if (done == 0) {
+			EVENTHANDLER_INVOKE(vfs_lowvnodes, desiredvnodes / 10);
 #if 0
 			/* These messages are temporary debugging aids */
 			if (vnlru_nowhere < 5)
diff --git a/sys/sys/eventhandler.h b/sys/sys/eventhandler.h
index d18b63553c7d..5c7f1d63dde5 100644
--- a/sys/sys/eventhandler.h
+++ b/sys/sys/eventhandler.h
@@ -167,6 +167,10 @@ typedef void (*vm_lowmem_handler_t)(void *, int);
 #define	LOWMEM_PRI_DEFAULT	EVENTHANDLER_PRI_FIRST
 EVENTHANDLER_DECLARE(vm_lowmem, vm_lowmem_handler_t);
 
+/* Low vnodes event */
+typedef void (*vfs_lowvnodes_handler_t)(void *, int);
+EVENTHANDLER_DECLARE(vfs_lowvnodes, vfs_lowvnodes_handler_t);
+
 /*
  * Process events
  * process_fork and exit handlers are called without Giant.