svn commit: r304097 - stable/11/sys/vm

[Mark Johnston]

Author: markj
Date: Sun Aug 14 19:05:44 2016
New Revision: 304097
URL: https://svnweb.freebsd.org/changeset/base/304097

Log:
  MFC r303243
  Update a comment in vm_page_advise() to match behaviour after r290529.

Modified:
  stable/11/sys/vm/vm_page.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/vm/vm_page.c
==============================================================================
--- stable/11/sys/vm/vm_page.c	Sun Aug 14 19:04:37 2016	(r304096)
+++ stable/11/sys/vm/vm_page.c	Sun Aug 14 19:05:44 2016	(r304097)
@@ -3411,9 +3411,11 @@ vm_page_advise(vm_page_t m, int advice)
 		vm_page_dirty(m);
 
 	/*
-	 * Place clean pages at the head of the inactive queue rather than the
-	 * tail, thus defeating the queue's LRU operation and ensuring that the
-	 * page will be reused quickly.
+	 * Place clean pages near the head of the inactive queue rather than
+	 * the tail, thus defeating the queue's LRU operation and ensuring that
+	 * the page will be reused quickly.  Dirty pages are given a chance to
+	 * cycle once through the inactive queue before becoming eligible for
+	 * laundering.
 	 */
 	_vm_page_deactivate(m, m->dirty == 0);
 }