make vmstat cpu-unplug safe
commitb5be11329f8cb2cc1a4c3b33b6b8d096c6012895
authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Mon, 12 May 2008 21:02:06 +0000 (12 14:02 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 13 May 2008 15:02:23 +0000 (13 08:02 -0700)
tree30ccea8a490bbde0e0760274b6eb4c5863971caa
parent78f508ab07954d12896097ac07ab2fab443c7ca2
make vmstat cpu-unplug safe

When accessing cpu_online_map, we should prevent dynamic changing
of cpu_online_map by get_online_cpus().

Unfortunately, all_vm_events() doesn't do that.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/vmstat.c