K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2019-10-23T17:58:19.846751Z
K 7
svn:log
V 374
Verify identity after checking for WAITFAIL in vm_page_busy_acquire().

A caller that does not guarantee that a page's identity won't change
while sleeping for a busy lock must specify either NOWAIT or WAITFAIL.

Reported by:	syzkaller
Reviewed by:	alc, kib
Discussed with:	jeff
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D22124

END