git: lwkt_synchronize_ipiqs: Add volatile to cpumask

[Sepherosa Ziehau <sephe@xxxxxxxxxxxxxxxxxxxxxxx>]

commit 5a1a2253f4264492b37891e4c809b29b117f60c7
Author: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date:   Fri Jan 28 17:45:40 2011 +0800

    lwkt_synchronize_ipiqs: Add volatile to cpumask
    
    Mainly to make sure compiler will not over-optimize it.

Summary of changes:
 sys/kern/lwkt_ipiq.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/5a1a2253f4264492b37891e4c809b29b117f60c7


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