K 10
svn:author
V 8
rmacklem
K 8
svn:date
V 27
2018-11-18T23:48:15.834962Z
K 7
svn:log
V 380
MFC: r339999
Fix NFS client vnode locking to avoid a crash during forced dismount.

A crash was reported where the crash occurred in nfs_advlock() when the
NFS_ISV4(vp) macro was being executed. This was caused by the vnode
being VI_DOOMED due to a forced dismount in progress.
This patch fixes the problem by locking the vnode before executing the
NFS_ISV4() macro.

PR:		232673

END