K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2019-09-27T16:41:34.822033Z
K 7
svn:log
V 575
Fix object locking in vm_object_unwire() after r352174.

Now, vm_page_busy_sleep() expects the page's object to be locked.
vm_object_unwire() does some unusual lazy locking of the object chain
and keeps objects locked until a busy page is encountered or the loop
terminates.  When a busy page is encountered, rather than unlocking all
but the "bottom-level" object, we must instead skip the object to which
"tm" belongs.

Reported and tested by:	pho
Reviewed by:	kib
Discussed with:	jeff
Sponsored by:	Intel, Netflix
Differential Revision:	https://reviews.freebsd.org/D21790

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