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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_ALLOC_BACKGROUND_H
#define _BCACHEFS_ALLOC_BACKGROUND_H
#include "bcachefs.h"
#include "alloc_types.h"
#include "debug.h"
struct bkey_alloc_unpacked {
u8 gen;
#define x(_name, _bits) u##_bits _name;
BCH_ALLOC_FIELDS()
#undef x
};
/* returns true if not equal */
static inline bool bkey_alloc_unpacked_cmp(struct bkey_alloc_unpacked l,
struct bkey_alloc_unpacked r)
{
return l.gen != r.gen
#define x(_name, _bits) || l._name != r._name
BCH_ALLOC_FIELDS()
#undef x
;
}
struct bkey_alloc_unpacked bch2_alloc_unpack(struct bkey_s_c);
void bch2_alloc_pack(struct bkey_i_alloc *,
const struct bkey_alloc_unpacked);
static inline struct bkey_alloc_unpacked
alloc_mem_to_key(struct bucket *g, struct bucket_mark m)
{
return (struct bkey_alloc_unpacked) {
.gen = m.gen,
.oldest_gen = g->oldest_gen,
.data_type = m.data_type,
.dirty_sectors = m.dirty_sectors,
.cached_sectors = m.cached_sectors,
.read_time = g->io_time[READ],
.write_time = g->io_time[WRITE],
};
}
#define ALLOC_SCAN_BATCH(ca) max_t(size_t, 1, (ca)->mi.nbuckets >> 9)
const char *bch2_alloc_invalid(const struct bch_fs *, struct bkey_s_c);
void bch2_alloc_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
#define bch2_bkey_ops_alloc (struct bkey_ops) { \
.key_invalid = bch2_alloc_invalid, \
.val_to_text = bch2_alloc_to_text, \
}
struct journal_keys;
int bch2_alloc_read(struct bch_fs *, struct journal_keys *);
int bch2_alloc_replay_key(struct bch_fs *, struct bkey_i *);
static inline void bch2_wake_allocator(struct bch_dev *ca)
{
struct task_struct *p;
rcu_read_lock();
p = rcu_dereference(ca->alloc_thread);
if (p)
wake_up_process(p);
rcu_read_unlock();
}
static inline void verify_not_on_freelist(struct bch_fs *c, struct bch_dev *ca,
size_t bucket)
{
if (expensive_debug_checks(c)) {
size_t iter;
long i;
unsigned j;
for (j = 0; j < RESERVE_NR; j++)
fifo_for_each_entry(i, &ca->free[j], iter)
BUG_ON(i == bucket);
fifo_for_each_entry(i, &ca->free_inc, iter)
BUG_ON(i == bucket);
}
}
void bch2_recalc_capacity(struct bch_fs *);
void bch2_dev_allocator_remove(struct bch_fs *, struct bch_dev *);
void bch2_dev_allocator_add(struct bch_fs *, struct bch_dev *);
void bch2_dev_allocator_quiesce(struct bch_fs *, struct bch_dev *);
void bch2_dev_allocator_stop(struct bch_dev *);
int bch2_dev_allocator_start(struct bch_dev *);
int bch2_alloc_write(struct bch_fs *, unsigned, bool *);
void bch2_fs_allocator_background_init(struct bch_fs *);
#endif /* _BCACHEFS_ALLOC_BACKGROUND_H */
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