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 {
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