mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/md/bcache/writeback.h
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@@ -5,18 +5,42 @@
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 #define CUTOFF_WRITEBACK	40
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 #define CUTOFF_WRITEBACK_SYNC	70
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+#define CUTOFF_WRITEBACK_MAX		70
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+#define CUTOFF_WRITEBACK_SYNC_MAX	90
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+
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 #define MAX_WRITEBACKS_IN_PASS  5
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 #define MAX_WRITESIZE_IN_PASS   5000	/* *512b */
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 #define WRITEBACK_RATE_UPDATE_SECS_MAX		60
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 #define WRITEBACK_RATE_UPDATE_SECS_DEFAULT	5
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+#define BCH_AUTO_GC_DIRTY_THRESHOLD	50
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+
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+#define BCH_DIRTY_INIT_THRD_MAX	12
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 /*
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  * 14 (16384ths) is chosen here as something that each backing device
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  * should be a reasonable fraction of the share, and not to blow up
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  * until individual backing devices are a petabyte.
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  */
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 #define WRITEBACK_SHARE_SHIFT   14
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+
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+struct bch_dirty_init_state;
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+struct dirty_init_thrd_info {
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+	struct bch_dirty_init_state	*state;
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+	struct task_struct		*thread;
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+};
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+
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+struct bch_dirty_init_state {
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+	struct cache_set		*c;
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+	struct bcache_device		*d;
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+	int				total_threads;
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+	int				key_idx;
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+	spinlock_t			idx_lock;
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+	atomic_t			started;
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+	atomic_t			enough;
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+	wait_queue_head_t		wait;
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+	struct dirty_init_thrd_info	infos[BCH_DIRTY_INIT_THRD_MAX];
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+};
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 static inline uint64_t bcache_dev_sectors_dirty(struct bcache_device *d)
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 {
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@@ -68,6 +92,9 @@
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 	}
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 }
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+extern unsigned int bch_cutoff_writeback;
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+extern unsigned int bch_cutoff_writeback_sync;
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+
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 static inline bool should_writeback(struct cached_dev *dc, struct bio *bio,
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 				    unsigned int cache_mode, bool would_skip)
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 {
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@@ -75,7 +102,7 @@
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 	if (cache_mode != CACHE_MODE_WRITEBACK ||
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 	    test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) ||
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-	    in_use > CUTOFF_WRITEBACK_SYNC)
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+	    in_use > bch_cutoff_writeback_sync)
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 		return false;
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 	if (bio_op(bio) == REQ_OP_DISCARD)
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@@ -91,7 +118,7 @@
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 	return (op_is_sync(bio->bi_opf) ||
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 		bio->bi_opf & (REQ_META|REQ_PRIO) ||
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-		in_use <= CUTOFF_WRITEBACK);
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+		in_use <= bch_cutoff_writeback);
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 }
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 static inline void bch_writeback_queue(struct cached_dev *dc)