hi, > +/* > + * uncharge all the entries that are charged to the group. > + */ > +void __swap_cgroup_force_empty(struct mem_cgroup *mem) > +{ > + struct swap_info_struct *p; > + int type; > + > + spin_lock(&swap_lock); > + for (type = swap_list.head; type >= 0; type = swap_info[type].next) { > + p = swap_info + type; > + > + if ((p->flags & SWP_ACTIVE) == SWP_ACTIVE) { > + unsigned int i = 0; > + > + spin_unlock(&swap_lock); what prevents the device from being swapoff'ed while you drop swap_lock? YAMAMOTO Takashi > + while ((i = find_next_to_unuse(p, i, mem)) != 0) { > + spin_lock(&swap_lock); > + if (p->swap_map[i] && p->memcg[i] == mem) > + swap_cgroup_uncharge(p, i); > + spin_unlock(&swap_lock); > + } > + spin_lock(&swap_lock); > + } > + } > + spin_unlock(&swap_lock); > + > + return; > +} > #endif _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers