Alan Cox ce3ee09b53 Eliminate unneeded vm_page_xbusy() and vm_page_xunbusy() operations when
neither vm_pager_has_page() nor vm_pager_get_pages() is called.

Reviewed by:	kib, markj
MFC after:	3 weeks
2016-08-14 22:00:45 +00:00
..
2015-06-10 10:48:12 +00:00