svn commit: r289414 - user/alc/PQ_LAUNDRY/sys/vm
Alan Cox
alc at FreeBSD.org
Fri Oct 16 08:22:23 UTC 2015
Author: alc
Date: Fri Oct 16 08:22:21 2015
New Revision: 289414
URL: https://svnweb.freebsd.org/changeset/base/289414
Log:
Revert r289357.
Modified:
user/alc/PQ_LAUNDRY/sys/vm/vm_pageout.c
Modified: user/alc/PQ_LAUNDRY/sys/vm/vm_pageout.c
==============================================================================
--- user/alc/PQ_LAUNDRY/sys/vm/vm_pageout.c Fri Oct 16 08:06:28 2015 (r289413)
+++ user/alc/PQ_LAUNDRY/sys/vm/vm_pageout.c Fri Oct 16 08:22:21 2015 (r289414)
@@ -1080,12 +1080,11 @@ vm_pageout_launder1(struct vm_domain *vm
queues_locked = FALSE;
/*
- * Invalid pages cannot appear on a queue. If
- * vm_pageout_fallback_object_lock() allowed a window
- * where the page could be invalidated, it should
- * detect this.
+ * Invalid pages can be easily freed. They cannot be
+ * mapped; vm_page_free() asserts this.
*/
- KASSERT(m->valid != 0, ("invalid page %p in laundry queue", m));
+ if (m->valid == 0)
+ goto free_page;
/*
* If the page has been referenced and the object is not dead,
@@ -1144,6 +1143,7 @@ vm_pageout_launder1(struct vm_domain *vm
* destroyed the object.
*/
if (m->dirty == 0) {
+free_page:
vm_page_free(m);
PCPU_INC(cnt.v_dfree);
} else if ((object->flags & OBJ_DEAD) == 0) {
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