svn commit: r258301 - stable/9/sys/vm

[Alexander Motin]

Author: mav
Date: Mon Nov 18 13:17:56 2013
New Revision: 258301
URL: http://svnweb.freebsd.org/changeset/base/258301

Log:
  MFC r240676 (by glebius):
  If caller specifies UMA_ZONE_OFFPAGE explicitly, then do not waste memory
  in an allocation for a slab.

Modified:
  stable/9/sys/vm/uma_core.c

Modified: stable/9/sys/vm/uma_core.c
==============================================================================
--- stable/9/sys/vm/uma_core.c	Mon Nov 18 13:12:45 2013	(r258300)
+++ stable/9/sys/vm/uma_core.c	Mon Nov 18 13:17:56 2013	(r258301)
@@ -1122,7 +1122,9 @@ keg_small_init(uma_keg_t keg)
 	keg->uk_rsize = rsize;
 	keg->uk_ppera = 1;
 
-	if (keg->uk_flags & UMA_ZONE_REFCNT) {
+	if (keg->uk_flags & UMA_ZONE_OFFPAGE) {
+		shsize = 0;
+	} else if (keg->uk_flags & UMA_ZONE_REFCNT) {
 		rsize += UMA_FRITMREF_SZ;	/* linkage & refcnt */
 		shsize = sizeof(struct uma_slab_refcnt);
 	} else {