From 53e61968c013de230abc94448de8048fceec97d8 Mon Sep 17 00:00:00 2001 From: alc Date: Tue, 20 Apr 2010 04:16:39 +0000 Subject: Eliminate an unnecessary call to pmap_remove_all(). If a page belongs to an object whose reference count is zero, then that page cannot possibly be mapped. --- sys/vm/vm_pageout.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'sys/vm/vm_pageout.c') diff --git a/sys/vm/vm_pageout.c b/sys/vm/vm_pageout.c index d5ede5a..735beee 100644 --- a/sys/vm/vm_pageout.c +++ b/sys/vm/vm_pageout.c @@ -1122,7 +1122,8 @@ unlock_and_continue: m->act_count == 0) { page_shortage--; if (object->ref_count == 0) { - pmap_remove_all(m); + KASSERT(!pmap_page_is_mapped(m), + ("vm_pageout_scan: page %p is mapped", m)); if (m->dirty == 0) vm_page_cache(m); else -- cgit v1.1