[-mm PATCH] time: i386 conversion part 3 - lock jiffies_64 manipulation

[john stultz <johnstul@us.ibm.com>]

Hey Andrew,

This should merge TOD my changes with Atsushi's jiffies/jiffies_64 fix
that is in your tree.

thanks
-john

Signed-off-by: John Stultz <johnstul@us.ibm.com>

diff -ru mmmerge/arch/i386/kernel/time.c mytree/arch/i386/kernel/time.c
--- mmmerge/arch/i386/kernel/time.c	2006-03-03 19:44:22.000000000 -0800
+++ mytree/arch/i386/kernel/time.c	2006-03-03 19:44:45.000000000 -0800
@@ -266,6 +266,7 @@
 
 static int timer_resume(struct sys_device *dev)
 {
+	unsigned long flags;
 	unsigned long sec;
 	unsigned long sleep_length;
 
@@ -276,8 +277,10 @@
 	setup_pit_timer();
 	sec = get_cmos_time() + clock_cmos_diff;
 	sleep_length = (get_cmos_time() - sleep_start) * HZ;
+	write_seqlock_irqsave(&xtime_lock, flags);
 	jiffies_64 += sleep_length;
 	wall_jiffies += sleep_length;
+	write_sequnlock_irqrestore(&xtime_lock, flags);
 	touch_softlockup_watchdog();
 	return 0;
 }