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-rw-r--r--sys/vm/vm_pageout.c3
1 files changed, 2 insertions, 1 deletions
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
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