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

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.czSigned-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
...@@ -2178,8 +2178,9 @@ static void drain_local_stock(struct work_struct *dummy) ...@@ -2178,8 +2178,9 @@ static void drain_local_stock(struct work_struct *dummy)
unsigned long flags; unsigned long flags;
/* /*
* The only protection from memory hotplug vs. drain_stock races is * The only protection from cpu hotplug (memcg_hotplug_cpu_dead) vs.
* that we always operate on local CPU stock here with IRQ disabled * drain_stock races is that we always operate on local CPU stock
* here with IRQ disabled
*/ */
local_irq_save(flags); local_irq_save(flags);
......
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