K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2016-07-11T14:19:09.140176Z
K 7
svn:log
V 714
In vgonel(), postpone setting BO_DEAD until VOP_RECLAIM() is called,
if vnode is VMIO.  For VMIO vnodes, set BO_DEAD in vm_object_terminate().

The vnode_destroy_object(), when calling into vm_object_terminate(),
must be able to flush buffers.  BO_DEAD purpose is to quickly destroy
buffers on write when the underlying vnode is not operable any more
(one example is the devfs node after geom is gone).  Setting BO_DEAD
for reclaiming vnode before object is terminated is premature, and
results in unability to flush buffers with live SU dependencies from
vinvalbuf() in vm_object_terminate().

Reported by:	David Cross <dcrosstech@gmail.com>
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks

END