K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2017-10-25T17:20:18.114252Z
K 7
svn:log
V 166
Make drain_output() use bufobj_wwait().

No functional change intended.

Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D12790

END