The patch titled
Subject: memcg: free entries in soft_limit_tree if allocation fails
has been removed from the -mm tree. Its filename was
memcg-clean-up-soft_limit_tree-if-allocation-fails.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Michal Hocko <mhocko@xxxxxxx>
Subject: 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@xxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Balbir Singh <bsingharora@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff -puN mm/memcontrol.c~memcg-clean-up-soft_limit_tree-if-allocation-fails mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-clean-up-soft_limit_tree-if-allocation-fails
+++ a/mm/memcontrol.c
@@ -4960,7 +4960,7 @@ static int mem_cgroup_soft_limit_tree_in
tmp = -1;
rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL, tmp);
if (!rtpn)
- return 1;
+ goto err_cleanup;
soft_limit_tree.rb_tree_per_node[node] = rtpn;
@@ -4971,6 +4971,16 @@ static int mem_cgroup_soft_limit_tree_in
}
}
return 0;
+
+err_cleanup:
+ for_each_node_state(node, N_POSSIBLE) {
+ if (!soft_limit_tree.rb_tree_per_node[node])
+ break;
+ kfree(soft_limit_tree.rb_tree_per_node[node]);
+ soft_limit_tree.rb_tree_per_node[node] = NULL;
+ }
+ return 1;
+
}
static struct cgroup_subsys_state * __ref
_
Patches currently in -mm which might be from mhocko@xxxxxxx are
origin.patch
mm-fix-null-ptr-dereference-in-__count_immobile_pages.patch
mm-__count_immobile_pages-make-sure-the-node-is-online.patch
mm-hugetlb-undo-change-to-page-mapcount-in-fault-handler.patch
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