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From: Mateusz Guzik <mjg@FreeBSD.org>
Date: Sun, 1 Mar 2020 21:49:16 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r358501 - head/sys/vm
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Author: mjg
Date: Sun Mar  1 21:49:16 2020
New Revision: 358501
URL: https://svnweb.freebsd.org/changeset/base/358501

Log:
  vm: add debug to uma_zone_set_smr
  
  Reviewed by:	markj, rlibby
  Differential Revision:	https://reviews.freebsd.org/D23902

Modified:
  head/sys/vm/uma_core.c

Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c	Sun Mar  1 20:37:42 2020	(r358500)
+++ head/sys/vm/uma_core.c	Sun Mar  1 21:49:16 2020	(r358501)
@@ -4659,6 +4659,9 @@ uma_zone_set_smr(uma_zone_t zone, smr_t smr)
 
 	ZONE_ASSERT_COLD(zone);
 
+	KASSERT(smr != NULL, ("Got NULL smr"));
+	KASSERT((zone->uz_flags & UMA_ZONE_SMR) == 0,
+	    ("zone %p (%s) already uses SMR", zone, zone->uz_name));
 	zone->uz_flags |= UMA_ZONE_SMR;
 	zone->uz_smr = smr;
 	zone_update_caches(zone);