add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/block/blk-wbt.h
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@@ -89,14 +89,12 @@
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 #ifdef CONFIG_BLK_WBT
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 int wbt_init(struct request_queue *);
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-void wbt_update_limits(struct request_queue *);
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 void wbt_disable_default(struct request_queue *);
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 void wbt_enable_default(struct request_queue *);
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 u64 wbt_get_min_lat(struct request_queue *q);
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 void wbt_set_min_lat(struct request_queue *q, u64 val);
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-void wbt_set_queue_depth(struct request_queue *, unsigned int);
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 void wbt_set_write_cache(struct request_queue *, bool);
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 u64 wbt_default_latency_nsec(struct request_queue *);
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@@ -110,16 +108,10 @@
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 {
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 	return -EINVAL;
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 }
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-static inline void wbt_update_limits(struct request_queue *q)
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-{
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-}
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 static inline void wbt_disable_default(struct request_queue *q)
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 {
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 }
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 static inline void wbt_enable_default(struct request_queue *q)
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-{
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-}
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-static inline void wbt_set_queue_depth(struct request_queue *q, unsigned int depth)
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 {
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 }
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 static inline void wbt_set_write_cache(struct request_queue *q, bool wc)