add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/mm/swap_cgroup.c
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@@ -171,9 +171,6 @@
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 	unsigned long length;
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 	struct swap_cgroup_ctrl *ctrl;
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-	if (!do_swap_account)
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-		return 0;
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-
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 	length = DIV_ROUND_UP(max_pages, SC_PER_PAGE);
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 	array_size = length * sizeof(void *);
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@@ -208,9 +205,6 @@
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 	struct page **map;
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 	unsigned long i, length;
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 	struct swap_cgroup_ctrl *ctrl;
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-
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-	if (!do_swap_account)
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-		return;
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 	mutex_lock(&swap_cgroup_mutex);
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 	ctrl = &swap_cgroup_ctrl[type];