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memcg: free entries in soft_limit_tree if allocation fails
If we are not able to allocate tree nodes for all NUMA nodes then we should release those that were allocated. Signed-off-by: Michal Hocko <mhocko@suse.cz> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Hugh Dickins <hughd@google.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -4960,7 +4960,7 @@ static int mem_cgroup_soft_limit_tree_init(void)
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tmp = -1;
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rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL, tmp);
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if (!rtpn)
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return 1;
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goto err_cleanup;
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soft_limit_tree.rb_tree_per_node[node] = rtpn;
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@ -4971,6 +4971,16 @@ static int mem_cgroup_soft_limit_tree_init(void)
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}
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}
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return 0;
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err_cleanup:
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for_each_node_state(node, N_POSSIBLE) {
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if (!soft_limit_tree.rb_tree_per_node[node])
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break;
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kfree(soft_limit_tree.rb_tree_per_node[node]);
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soft_limit_tree.rb_tree_per_node[node] = NULL;
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}
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return 1;
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}
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static struct cgroup_subsys_state * __ref
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