jeff c25a7c1449 Use an atomic reference count for paging in progress so that callers do not
require the object lock.

Reviewed by:	markj
Tested by:	pho (as part of a larger branch)
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D21311
2019-08-19 23:09:38 +00:00
..
2019-06-05 22:29:05 +00:00