K 10
svn:author
V 4
jeff
K 8
svn:date
V 27
2019-10-15T03:35:11.041668Z
K 7
svn:log
V 351
(1/6) Replace busy checks with acquires where it is trival to do so.

This is the first in a series of patches that promotes the page busy field
to a first class lock that no longer requires the object lock for
consistency.

Reviewed by:	kib, markj
Tested by:	pho
Sponsored by:	Netflix, Intel
Differential Revision:	https://reviews.freebsd.org/D21548

END