Commit d3bc2367 authored by Christoph Lameter's avatar Christoph Lameter Committed by Linus Torvalds

vmstat: update comment regarding stat_threshold

Signed-off-by: default avatarChristoph Lameter <cl@linux.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9f6ae448
......@@ -321,9 +321,12 @@ static inline void mod_state(struct zone *zone,
/*
* The fetching of the stat_threshold is racy. We may apply
* a counter threshold to the wrong the cpu if we get
* rescheduled while executing here. However, the following
* will apply the threshold again and therefore bring the
* counter under the threshold.
* rescheduled while executing here. However, the next
* counter update will apply the threshold again and
* therefore bring the counter under the threshold again.
*
* Most of the time the thresholds are the same anyways
* for all cpus in a zone.
*/
t = this_cpu_read(pcp->stat_threshold);
......
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