Author: alc
Date: Sat Apr 21 18:26:16 2012
New Revision: 234554
URL: http://svn.freebsd.org/changeset/base/234554
Log:
As documented in vm_page.h, updates to the vm_page's flags no longer
require the page queues lock.
MFC after: 1 week
Modified:
head/sys/vm/vm_page.c
Modified: head/sys/vm/vm_page.c
==============================================================================
--- head/sys/vm/vm_page.c Sat Apr 21 18:14:46 2012 (r234553)
+++ head/sys/vm/vm_page.c Sat Apr 21 18:26:16 2012 (r234554)
@@ -2155,13 +2155,10 @@ vm_page_unwire(vm_page_t m, int activate
if ((m->oflags & VPO_UNMANAGED) != 0 ||
m->object == NULL)
return;
- vm_page_lock_queues();
- if (activate)
- vm_page_enqueue(PQ_ACTIVE, m);
- else {
+ if (!activate)
m->flags &= ~PG_WINATCFLS;
- vm_page_enqueue(PQ_INACTIVE, m);
- }
+ vm_page_lock_queues();
+ vm_page_enqueue(activate ? PQ_ACTIVE : PQ_INACTIVE, m);
vm_page_unlock_queues();
}
} else
@@ -2201,8 +2198,8 @@ _vm_page_deactivate(vm_page_t m, int ath
if ((queue = m->queue) == PQ_INACTIVE)
return;
if (m->wire_count == 0 && (m->oflags & VPO_UNMANAGED) == 0) {
- vm_page_lock_queues();
m->flags &= ~PG_WINATCFLS;
+ vm_page_lock_queues();
if (queue != PQ_NONE)
vm_page_queue_remove(queue, m);
if (athead)
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