memcg: use res_counter_uncharge_until() in move_parent()

By using res_counter_uncharge_until(), we can avoid race and unnecessary
charging.

Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ying Han <[email protected]>
Cc: Glauber Costa <[email protected]>
Reviewed-by: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions