add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/md/dm-stats.h
..
..
@@ -22,7 +22,7 @@
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 	unsigned long long duration_ns;
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 };
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-void dm_stats_init(struct dm_stats *st);
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+int dm_stats_init(struct dm_stats *st);
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 void dm_stats_cleanup(struct dm_stats *st);
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 struct mapped_device;