svn commit: r240676 - head/sys/vm

[Gleb Smirnoff]

Author: glebius
Date: Tue Sep 18 20:28:55 2012
New Revision: 240676
URL: http://svn.freebsd.org/changeset/base/240676

Log:
  If caller specifies UMA_ZONE_OFFPAGE explicitly, then do not waste memory
  in an allocation for a slab.
  
  Reviewed by:	jeff

Modified:
  head/sys/vm/uma_core.c

Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c	Tue Sep 18 20:28:01 2012	(r240675)
+++ head/sys/vm/uma_core.c	Tue Sep 18 20:28:55 2012	(r240676)
@@ -1127,7 +1127,9 @@ 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 {