K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2008-10-20T10:07:28.779209Z
K 7
svn:log
V 330
In vfs_busy(), lockmgr() cannot legitimately sleep, because code checked
MNTK_UNMOUNT before, and mnt_mtx is used as interlock. vfs_busy() always
tries to obtain a shared lock on mnt_lock, the other user is unmount who
tries to drain it, setting MNTK_UNMOUNT before.

Reviewed by:	tegge, attilio
Tested by:	pho
MFC after:	2 weeks

END