K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2020-01-07T04:34:03.792483Z
K 7
svn:log
V 323
vfs: prevent numvnodes and freevnodes re-reads when appropriate

Otherwise in code like this:
if (numvnodes > desiredvnodes)
	vnlru_free_locked(numvnodes - desiredvnodes, NULL);

numvnodes can drop below desiredvnodes prior to the call and if the
compiler generated another read the subtraction would get a negative
value.

END