On Mon, Jun 20, 2016 at 02:41:58PM -0400, Tejun Heo wrote: > mem_cgroup_migrate() uses local_irq_disable/enable() but can be called > with irq disabled from migrate_page_copy(). This ends up enabling irq > while holding a irq context lock triggering the following lockdep > warning. Fix it by using irq_save/restore instead.
Acked-by: Johannes Weiner <[email protected]> Fixes: 74485cf2bc85 ("mm: migrate: consolidate mem_cgroup_migrate() calls") CC: [email protected] # 4.5
