/* SPDX-License-Identifier: GPL-2.0 */#ifndef _BCACHEFS_ALLOC_BACKGROUND_FORMAT_H#define _BCACHEFS_ALLOC_BACKGROUND_FORMAT_H struct bch_alloc {	struct bch_val		v;	__u8			fields;	__u8			gen;	__u8			data[];} __packed __aligned(8); #define BCH_ALLOC_FIELDS_V1()			\	x(read_time,		16)		\	x(write_time,		16)		\	x(data_type,		8)		\	x(dirty_sectors,	16)		\	x(cached_sectors,	16)		\	x(oldest_gen,		8)		\	x(stripe,		32)		\	x(stripe_redundancy,	8) enum {#define x(name, _bits) BCH_ALLOC_FIELD_V1_##name,	BCH_ALLOC_FIELDS_V1()#undef x}; struct bch_alloc_v2 {	struct bch_val		v;	__u8			nr_fields;	__u8			gen;	__u8			oldest_gen;	__u8			data_type;	__u8			data[];} __packed __aligned(8); #define BCH_ALLOC_FIELDS_V2()			\	x(read_time,		64)		\	x(write_time,		64)		\	x(dirty_sectors,	32)		\	x(cached_sectors,	32)		\	x(stripe,		32)		\	x(stripe_redundancy,	8) struct bch_alloc_v3 {	struct bch_val		v;	__le64			journal_seq;	__le32			flags;	__u8			nr_fields;	__u8			gen;	__u8			oldest_gen;	__u8			data_type;	__u8			data[];} __packed __aligned(8); LE32_BITMASK(BCH_ALLOC_V3_NEED_DISCARD,struct bch_alloc_v3, flags,  0,  1)LE32_BITMASK(BCH_ALLOC_V3_NEED_INC_GEN,struct bch_alloc_v3, flags,  1,  2) struct bch_alloc_v4 {	struct bch_val		v;	__u64			journal_seq;	__u32			flags;	__u8			gen;	__u8			oldest_gen;	__u8			data_type;	__u8			stripe_redundancy;	__u32			dirty_sectors;	__u32			cached_sectors;	__u64			io_time[2];	__u32			stripe;	__u32			nr_external_backpointers;	/* end of fields in original version of alloc_v4 */	__u64			_fragmentation_lru; /* obsolete */	__u32			stripe_sectors;	__u32			pad;} __packed __aligned(8); #define BCH_ALLOC_V4_U64s_V0	6#define BCH_ALLOC_V4_U64s	(sizeof(struct bch_alloc_v4) / sizeof(__u64)) BITMASK(BCH_ALLOC_V4_NEED_DISCARD,	struct bch_alloc_v4, flags,  0,  1)BITMASK(BCH_ALLOC_V4_NEED_INC_GEN,	struct bch_alloc_v4, flags,  1,  2)BITMASK(BCH_ALLOC_V4_BACKPOINTERS_START,struct bch_alloc_v4, flags,  2,  8)BITMASK(BCH_ALLOC_V4_NR_BACKPOINTERS,	struct bch_alloc_v4, flags,  8,  14) #define KEY_TYPE_BUCKET_GENS_BITS	8#define KEY_TYPE_BUCKET_GENS_NR		(1U << KEY_TYPE_BUCKET_GENS_BITS)#define KEY_TYPE_BUCKET_GENS_MASK	(KEY_TYPE_BUCKET_GENS_NR - 1) struct bch_bucket_gens {	struct bch_val		v;	u8			gens[KEY_TYPE_BUCKET_GENS_NR];} __packed __aligned(8); #endif /* _BCACHEFS_ALLOC_BACKGROUND_FORMAT_H */