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bpf: Only call maybe_wait_bpf_programs() when map operation succeeds
There is no need to call maybe_wait_bpf_programs() if update or deletion operation fails. So only call maybe_wait_bpf_programs() if update or deletion operation succeeds. Signed-off-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/r/20231208102355.2628918-5-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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@ -1576,7 +1576,8 @@ static int map_update_elem(union bpf_attr *attr, bpfptr_t uattr)
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}
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err = bpf_map_update_value(map, f.file, key, value, attr->flags);
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maybe_wait_bpf_programs(map);
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if (!err)
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maybe_wait_bpf_programs(map);
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kvfree(value);
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free_key:
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@ -1632,7 +1633,8 @@ static int map_delete_elem(union bpf_attr *attr, bpfptr_t uattr)
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err = map->ops->map_delete_elem(map, key);
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rcu_read_unlock();
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bpf_enable_instrumentation();
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maybe_wait_bpf_programs(map);
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if (!err)
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maybe_wait_bpf_programs(map);
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out:
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kvfree(key);
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err_put:
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