13902 Fix for 13717 may break 8-disk raidz2
13915 installctx() blocking allocate causes problems
Portions contributed by: Jerry Jelinek <gjelinek@gmail.com>
Change-Id: I934d69946cec42630fc541fa8c7385b862b69ca2

@@ -20,11 +20,11 @@
  */
 
 /*
  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
- * Copyright 2016 Joyent, Inc.
+ * Copyright 2021 Joyent, Inc.
  */
 
 #include <sys/types.h>
 #include <sys/systm.h>
 #include <sys/schedctl.h>

@@ -111,11 +111,11 @@
                 if ((error = schedctl_shared_alloc(&ssp, &uaddr)) != 0)
                         return ((caddr_t)(uintptr_t)set_errno(error));
                 bzero(ssp, sizeof (*ssp));
 
                 installctx(t, ssp, schedctl_save, schedctl_restore,
-                    schedctl_fork, NULL, NULL, NULL);
+                    schedctl_fork, NULL, NULL, NULL, NULL);
 
                 thread_lock(t); /* protect against ts_tick and ts_update */
                 t->t_schedctl = ssp;
                 t->t_sc_uaddr = uaddr;
                 ssp->sc_cid = t->t_cid;