memory_hotplug: drop spurious calls to flush_scheduled_work()
lru_add_drain_all() uses schedule_on_each_cpu() which is synchronous.
There is no reason to call flush_scheduled_work() after
lru_add_drain_all(). Drop the spurious calls.
This is to prepare for the deprecation and removal of
flush_scheduled_work().
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index dd186c1..d4e940a 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -840,7 +840,6 @@
ret = 0;
if (drain) {
lru_add_drain_all();
- flush_scheduled_work();
cond_resched();
drain_all_pages();
}
@@ -862,7 +861,6 @@
}
/* drain all zone's lru pagevec, this is asyncronous... */
lru_add_drain_all();
- flush_scheduled_work();
yield();
/* drain pcp pages , this is synchrouns. */
drain_all_pages();
