diff options
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index b730233a481d..f2b87e02574e 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5649,9 +5649,21 @@ subsys_initcall(mem_cgroup_swap_init); #endif /* CONFIG_SWAP */ -bool mem_cgroup_node_allowed(struct mem_cgroup *memcg, int nid) +void mem_cgroup_node_filter_allowed(struct mem_cgroup *memcg, nodemask_t *mask) { - return memcg ? cpuset_node_allowed(memcg->css.cgroup, nid) : true; + nodemask_t allowed; + + if (!memcg) + return; + + /* + * Since this interface is intended for use by migration paths, and + * reclaim and migration are subject to race conditions such as changes + * in effective_mems and hot-unpluging of nodes, inaccurate allowed + * mask is acceptable. + */ + cpuset_nodes_allowed(memcg->css.cgroup, &allowed); + nodes_and(*mask, *mask, allowed); } void mem_cgroup_show_protected_memory(struct mem_cgroup *memcg) |