svn commit: r206855 - user/kmacy/head_page_lock_2/sys/vm
Kip Macy
kmacy at FreeBSD.org
Mon Apr 19 19:25:17 UTC 2010
Author: kmacy
Date: Mon Apr 19 19:25:17 2010
New Revision: 206855
URL: http://svn.freebsd.org/changeset/base/206855
Log:
per 206823:
vm_thread_swapout() can safely dirty the page before rather than after
acquiring the page queues lock.
Modified:
user/kmacy/head_page_lock_2/sys/vm/vm_glue.c
Modified: user/kmacy/head_page_lock_2/sys/vm/vm_glue.c
==============================================================================
--- user/kmacy/head_page_lock_2/sys/vm/vm_glue.c Mon Apr 19 19:20:36 2010 (r206854)
+++ user/kmacy/head_page_lock_2/sys/vm/vm_glue.c Mon Apr 19 19:25:17 2010 (r206855)
@@ -523,8 +523,8 @@ vm_thread_swapout(struct thread *td)
m = vm_page_lookup(ksobj, i);
if (m == NULL)
panic("vm_thread_swapout: kstack already missing?");
- vm_page_lock(m);
vm_page_dirty(m);
+ vm_page_lock(m);
vm_page_unwire(m, 0);
vm_page_unlock(m);
}
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