Commit 5c49cf9a authored by Michal Hocko's avatar Michal Hocko Committed by Linus Torvalds
Browse files

memcg: fix up drain_local_stock comment 

Thomas and Vlastimil have noticed that the comment in drain_local_stock
doesn't quite make sense.  It talks about a synchronization with the
memory hotplug but there is no actual memory hotplug involvement here.  I
meant to talk about cpu hotplug here.  Fix that up and hopefuly make the
comment more helpful by referencing the cpu hotplug callback as well.

Link: https://lkml.kernel.org/r/YRDwOhVglJmY7ES5@dhcp22.suse.cz


Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 27fb0956

mm/memcontrol.c

+3 −2
Original line number Diff line number Diff line
@@ -2178,8 +2178,9 @@ static void drain_local_stock(struct work_struct *dummy) 
	unsigned long flags;



	/*

	 * The only protection from memory hotplug vs. drain_stock races is

	 * that we always operate on local CPU stock here with IRQ disabled

	 * The only protection from cpu hotplug (memcg_hotplug_cpu_dead) vs.

	 * drain_stock races is that we always operate on local CPU stock

	 * here with IRQ disabled

	 */

	local_irq_save(flags);