K 10 svn:author V 5 markj K 8 svn:date V 27 2017-06-14T03:45:26.256256Z K 7 svn:log V 462 Fix handling of subpage BIO_WRITE and BIO_DELETE requests on swap MDs. Such requests would previously mark the entire page as valid, which was incorrect since nothing guaranteed that the page's contents had been initialized. This change also modifies subpage BIO_DELETEs so that the entire page is marked dirty, rather than only a subrange. There is no benefit to creating partially dirty swap pages. Reviewed by: alc, kib (previous version) MFC after: 3 days END