svn commit: r192494 - stable/7/sys/kern

[Kip Macy]

Author: kmacy
Date: Wed May 20 22:32:25 2009
New Revision: 192494
URL: http://svn.freebsd.org/changeset/base/192494

Log:
  MFC minimal zfs lock ordering for WITNESS
  
  (dnode -> dirty record -> dbuf)

Modified:
  stable/7/sys/kern/subr_witness.c

Modified: stable/7/sys/kern/subr_witness.c
==============================================================================
--- stable/7/sys/kern/subr_witness.c	Wed May 20 22:30:57 2009	(r192493)
+++ stable/7/sys/kern/subr_witness.c	Wed May 20 22:32:25 2009	(r192494)
@@ -397,6 +397,13 @@ static struct witness_order_list_entry o
 	{ "vnode interlock", &lock_class_mtx_sleep },
 	{ NULL, NULL },
 	/*
+	 * ZFS locking
+	 */
+	{ "dn->dn_mtx", &lock_class_sx },
+	{ "dr->dt.di.dr_mtx", &lock_class_sx },
+	{ "db->db_mtx", &lock_class_sx },
+	{ NULL, NULL },
+	/*
 	 * spin locks
 	 */
 #ifdef SMP