From b155a243a6c8a73a57d64534e21ef3593f6ac5e2 Mon Sep 17 00:00:00 2001
From: Toomas Soome <tsoome@me.com>
Date: Tue, 8 Sep 2020 21:36:52 +0300
Subject: [PATCH] dnode_special_open() error: unchecked function return
 'zrl_tryenter'

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Toomas Soome <tsoome@me.com>
Closes #10876
---
 module/zfs/dnode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/module/zfs/dnode.c b/module/zfs/dnode.c
index 00536f2774..43a2fcad66 100644
--- a/module/zfs/dnode.c
+++ b/module/zfs/dnode.c
@@ -1197,7 +1197,7 @@ dnode_special_open(objset_t *os, dnode_phys_t *dnp, uint64_t object,
 	dnode_t *dn;
 
 	zrl_init(&dnh->dnh_zrlock);
-	zrl_tryenter(&dnh->dnh_zrlock);
+	VERIFY3U(1, ==, zrl_tryenter(&dnh->dnh_zrlock));
 
 	dn = dnode_create(os, dnp, NULL, object, dnh);
 	DNODE_VERIFY(dn);