K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2019-09-16T15:16:48.098266Z
K 7
svn:log
V 436
Assert that the refcount value is not VPRC_BLOCKED in vm_page_drop().

VPRC_BLOCKED is a refcount flag used to indicate that a thread is
tearing down mappings of a page.  When set, it causes attempts to wire a
page via a pmap lookup to fail.  It should never represent the last
reference to a page, so assert this.

Suggested by:	kib
Reviewed by:	alc, kib
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D21639

END