Author: mdf
Date: Tue Oct 19 16:06:00 2010
New Revision: 214062
URL: http://svn.freebsd.org/changeset/base/214062
Log:
uma_zfree(zone, NULL) should do nothing, to match free(9).
Noticed by: Ron Steinke <rsteinke at isilon dot com>
MFC after: 3 days
Modified:
head/share/man/man9/zone.9
head/sys/vm/uma_core.c
Modified: head/share/man/man9/zone.9
==============================================================================
--- head/share/man/man9/zone.9 Tue Oct 19 15:26:08 2010 (r214061)
+++ head/share/man/man9/zone.9 Tue Oct 19 16:06:00 2010 (r214062)
@@ -153,6 +153,13 @@ Items are released back to the zone from
calling
.Fn uma_zfree
with a pointer to the zone and a pointer to the item.
+If
+.Fa item
+is
+.Dv NULL ,
+then
+.Fn uma_zfree
+does nothing.
.Pp
The variations
.Fn uma_zalloc_arg
Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c Tue Oct 19 15:26:08 2010 (r214061)
+++ head/sys/vm/uma_core.c Tue Oct 19 16:06:00 2010 (r214062)
@@ -2517,6 +2517,10 @@ uma_zfree_arg(uma_zone_t zone, void *ite
CTR2(KTR_UMA, "uma_zfree_arg thread %x zone %s", curthread,
zone->uz_name);
+ /* uma_zfree(..., NULL) does nothing, to match free(9). */
+ if (item == NULL)
+ return;
+
if (zone->uz_dtor)
zone->uz_dtor(item, zone->uz_size, udata);
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
