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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H
#define _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H
#include "darray.h"
#include "journal_types.h"
#define BTREE_WRITE_BUFERED_VAL_U64s_MAX 4
#define BTREE_WRITE_BUFERED_U64s_MAX (BKEY_U64s + BTREE_WRITE_BUFERED_VAL_U64s_MAX)
struct wb_key_ref {
union {
struct {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
unsigned idx:24;
u8 pos[sizeof(struct bpos)];
enum btree_id btree:8;
#else
enum btree_id btree:8;
u8 pos[sizeof(struct bpos)];
unsigned idx:24;
#endif
} __packed;
struct {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
u64 lo;
u64 mi;
u64 hi;
#else
u64 hi;
u64 mi;
u64 lo;
#endif
};
};
};
struct btree_write_buffered_key {
enum btree_id btree:8;
u64 journal_seq:56;
__BKEY_PADDED(k, BTREE_WRITE_BUFERED_VAL_U64s_MAX);
};
struct btree_write_buffer_keys {
DARRAY(struct btree_write_buffered_key) keys;
struct journal_entry_pin pin;
struct mutex lock;
};
struct btree_write_buffer {
DARRAY(struct wb_key_ref) sorted;
struct btree_write_buffer_keys inc;
struct btree_write_buffer_keys flushing;
struct work_struct flush_work;
};
#endif /* _BCACHEFS_BTREE_WRITE_BUFFER_TYPES_H */
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