K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2020-01-30T19:38:12.245001Z
K 7
svn:log
V 271
vfs: keep the mount point referenced across sys_quotactl

Otherwise we risk running into use-after-free.

In particular this codepath ends up dropping all protection before
suspending writes:

ufs_quotactl -> quotaoff_inchange -> vfs_write_suspend_umnt

Reported by:	pho

END