Use mas_node_count_gfp with GFP_KERNEL instead of GFP_NOWAIT | __GFP_NOWARN on mas_expected_entries in order to allow memory reclaim. Currently, fork errors occur on low free memory as follows: Zygote : Failed to fork child process: Out of memory (12) -ENOMEM was returned as following path: mas_node_count mas_expected_entries dup_mmap dup_mm copy_mm copy_process Signed-off-by: Jaeseon Sim <jason.sim@xxxxxxxxxxx> --- lib/maple_tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index ee1ff0c59fd7..b0229271c24e 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -5574,7 +5574,7 @@ int mas_expected_entries(struct ma_state *mas, unsigned long nr_entries) /* Internal nodes */ nr_nodes += DIV_ROUND_UP(nr_nodes, nonleaf_cap); /* Add working room for split (2 nodes) + new parents */ - mas_node_count(mas, nr_nodes + 3); + mas_node_count_gfp(mas, nr_nodes + 3, GFP_KERNEL); /* Detect if allocations run out */ mas->mas_flags |= MA_STATE_PREALLOC; -- 2.17.1
