From 93b548547799c6075df361af410101f21cf469cb Mon Sep 17 00:00:00 2001
From: Matthew Dillon <dillon@apollo.backplane.com>
Date: Mon, 28 Nov 2016 10:45:54 -0800
Subject: [PATCH] kernel - Remove buffer flush debug message

* Remove the "dirty bufs left after final pass" debug message.  This case
  can occur normally during heavy I/O, particularly with the concurrency
  DragonFly now allows.
---
 sys/kern/vfs_subr.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index adc5c8b2cf..53ab79f757 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -731,8 +731,14 @@ vfsync(struct vnode *vp, int waitfor, int passes,
 					((info.skippedbufs > 1) ? "s" : ""));
 			}
 		}
+#if 0
+		/*
+		 * This case can occur normally because vnode lock might
+		 * not be held.
+		 */
 		if (!RB_EMPTY(&vp->v_rbdirty_tree))
 			kprintf("dirty bufs left after final pass\n");
+#endif
 		break;
 	}
 	lwkt_reltoken(&vp->v_token);
-- 
2.11.4.GIT