From 5284f43a1e66f6237bb300f256460b4220398f3e Mon Sep 17 00:00:00 2001
From: Tim Chase <tim@chase2k.com>
Date: Sun, 15 Apr 2018 17:12:28 -0500
Subject: [PATCH] Avoid Linux hung task message in ZTHR

Use an interruptible to avoid Linux hung task message in
ZTHR and to prevent inflating the load average.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Closes #7440
Closes #7441
---
 module/zfs/zthr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/module/zfs/zthr.c b/module/zfs/zthr.c
index 9beb7e128..dc0f6d983 100644
--- a/module/zfs/zthr.c
+++ b/module/zfs/zthr.c
@@ -189,7 +189,7 @@ zthr_procedure(void *arg)
 			mutex_enter(&t->zthr_lock);
 		} else {
 			/* go to sleep */
-			cv_wait(&t->zthr_cv, &t->zthr_lock);
+			cv_wait_sig(&t->zthr_cv, &t->zthr_lock);
 		}
 	}
 	mutex_exit(&t->zthr_lock);