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Groups > linux.kernel > #1413926

[patch] mm/memcontrol.c::mem_cgroup_migrate() - replace another local_irq_disable() w. local_lock_irq()

From Mike Galbraith <umgwanakikbuti@gmail.com>
Newsgroups linux.kernel
Subject [patch] mm/memcontrol.c::mem_cgroup_migrate() - replace another local_irq_disable() w. local_lock_irq()
Date 2016-06-05 08:20 +0200
Message-ID <rGzzH-3cz-7@gated-at.bofh.it> (permalink)
References <rFUPU-21R-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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v4.6 grew a local_irq_disable() in mm/memcontrol.c::mem_cgroup_migrate().
Convert it to use the existing local lock (event_lock) like the others.

Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
---
 mm/memcontrol.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5557,10 +5557,10 @@ void mem_cgroup_migrate(struct page *old
 
 	commit_charge(newpage, memcg, false);
 
-	local_irq_disable();
+	local_lock_irq(event_lock);
 	mem_cgroup_charge_statistics(memcg, newpage, compound, nr_pages);
 	memcg_check_events(memcg, newpage);
-	local_irq_enable();
+	local_unlock_irq(event_lock);
 }
 
 DEFINE_STATIC_KEY_FALSE(memcg_sockets_enabled_key);

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[ANNOUNCE] 4.6.1-rt3 Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-06-03 12:50 +0200
  [patch rfc] work-simple: Rename work-simple.[ch] to swork.[ch] for  consistency Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-06-05 08:20 +0200
    Re: [patch rfc] work-simple: Rename work-simple.[ch] to swork.[ch]  for consistency Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-06-06 11:00 +0200
  [patch] mm/memcontrol.c::mem_cgroup_migrate() - replace another  local_irq_disable() w. local_lock_irq() Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-06-05 08:20 +0200
    Re: [patch] mm/memcontrol.c::mem_cgroup_migrate() - replace another  local_irq_disable() w. local_lock_irq() Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-06-06 11:00 +0200
  [patch rfc] locking/rwsem: Add down_write_killable/killable_nested() Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-06-07 06:20 +0200
    Re: [patch rfc] locking/rwsem: Add  down_write_killable/killable_nested() Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-06-09 15:10 +0200

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