D42513.id129873.diff
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D42513.id129873.diff
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	diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
	--- a/sys/vm/vm_page.c
	+++ b/sys/vm/vm_page.c
	@@ -4436,7 +4436,8 @@
	VM_OBJECT_ASSERT_WLOCKED(m->object);
	vm_page_assert_xbusied(m);

	- if (advice == MADV_FREE)
	+ switch (advice) {
	+ case MADV_FREE:
	/*
	* Mark the page clean. This will allow the page to be freed
	* without first paging it out. MADV_FREE pages are often
	@@ -4444,15 +4445,19 @@
	* would result in a page fault on a later access.
	*/
	vm_page_undirty(m);
	- else if (advice != MADV_DONTNEED) {
	- if (advice == MADV_WILLNEED)
	- vm_page_activate(m);
	+ break;
	+ case MADV_DONTNEED:
	+ if (m->dirty == 0 && pmap_is_modified(m))
	+ vm_page_dirty(m);
	+ break;
	+ case MADV_WILLNEED:
	+ vm_page_activate(m);
	+ return;
	+ default:
	+ /* Do nothing. */
	return;
	}

	- if (advice != MADV_FREE && m->dirty == 0 && pmap_is_modified(m))
	- vm_page_dirty(m);
	-
	/*
	* Clear any references to the page. Otherwise, the page daemon will
	* immediately reactivate the page.