/* SPDX-License-Identifier: GPL-2.0 */#ifndef _BCACHEFS_ALLOC_TYPES_H#define _BCACHEFS_ALLOC_TYPES_H #include <linux/mutex.h>#include <linux/spinlock.h> #include "clock_types.h"#include "fifo.h" struct bucket_alloc_state {	enum {		BTREE_BITMAP_NO,		BTREE_BITMAP_YES,		BTREE_BITMAP_ANY,	}	btree_bitmap; 	u64	buckets_seen;	u64	skipped_open;	u64	skipped_need_journal_commit;	u64	skipped_nocow;	u64	skipped_nouse;	u64	skipped_mi_btree_bitmap;}; #define BCH_WATERMARKS()		\	x(stripe)			\	x(normal)			\	x(copygc)			\	x(btree)			\	x(btree_copygc)			\	x(reclaim)			\	x(interior_updates) enum bch_watermark {#define x(name)	BCH_WATERMARK_##name,	BCH_WATERMARKS()#undef x	BCH_WATERMARK_NR,}; #define BCH_WATERMARK_BITS	3#define BCH_WATERMARK_MASK	~(~0U << BCH_WATERMARK_BITS) #define OPEN_BUCKETS_COUNT	1024 #define WRITE_POINT_HASH_NR	32#define WRITE_POINT_MAX		32 /* * 0 is never a valid open_bucket_idx_t: */typedef u16			open_bucket_idx_t; struct open_bucket {	spinlock_t		lock;	atomic_t		pin;	open_bucket_idx_t	freelist;	open_bucket_idx_t	hash; 	/*	 * When an open bucket has an ec_stripe attached, this is the index of	 * the block in the stripe this open_bucket corresponds to:	 */	u8			ec_idx;	enum bch_data_type	data_type:6;	unsigned		valid:1;	unsigned		on_partial_list:1; 	u8			dev;	u8			gen;	u32			sectors_free;	u64			bucket;	struct ec_stripe_new	*ec;}; #define OPEN_BUCKET_LIST_MAX	15 struct open_buckets {	open_bucket_idx_t	nr;	open_bucket_idx_t	v[OPEN_BUCKET_LIST_MAX];}; struct dev_stripe_state {	u64			next_alloc[BCH_SB_MEMBERS_MAX];}; #define WRITE_POINT_STATES()		\	x(stopped)			\	x(waiting_io)			\	x(waiting_work)			\	x(running) enum write_point_state {#define x(n)	WRITE_POINT_##n,	WRITE_POINT_STATES()#undef x	WRITE_POINT_STATE_NR}; struct write_point {	struct {		struct hlist_node	node;		struct mutex		lock;		u64			last_used;		unsigned long		write_point;		enum bch_data_type	data_type; 		/* calculated based on how many pointers we're actually going to use: */		unsigned		sectors_free; 		struct open_buckets	ptrs;		struct dev_stripe_state	stripe; 		u64			sectors_allocated;	} __aligned(SMP_CACHE_BYTES); 	struct {		struct work_struct	index_update_work; 		struct list_head	writes;		spinlock_t		writes_lock; 		enum write_point_state	state;		u64			last_state_change;		u64			time[WRITE_POINT_STATE_NR];	} __aligned(SMP_CACHE_BYTES);}; struct write_point_specifier {	unsigned long		v;}; #endif /* _BCACHEFS_ALLOC_TYPES_H */