mirror of
https://github.com/koverstreet/bcachefs-tools.git
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86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
#ifndef _BCACHE_ALLOC_H
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#define _BCACHE_ALLOC_H
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#include "alloc_types.h"
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struct bkey;
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struct bucket;
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struct bch_dev;
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struct bch_fs;
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struct dev_group;
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static inline size_t prios_per_bucket(const struct bch_dev *ca)
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{
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return (bucket_bytes(ca) - sizeof(struct prio_set)) /
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sizeof(struct bucket_disk);
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}
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static inline size_t prio_buckets(const struct bch_dev *ca)
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{
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return DIV_ROUND_UP((size_t) (ca)->mi.nbuckets, prios_per_bucket(ca));
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}
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void bch_dev_group_remove(struct dev_group *, struct bch_dev *);
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void bch_dev_group_add(struct dev_group *, struct bch_dev *);
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int bch_prio_read(struct bch_dev *);
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size_t bch_bucket_alloc(struct bch_dev *, enum alloc_reserve);
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void bch_open_bucket_put(struct bch_fs *, struct open_bucket *);
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struct open_bucket *bch_alloc_sectors_start(struct bch_fs *,
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struct write_point *,
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unsigned, unsigned,
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enum alloc_reserve,
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struct closure *);
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void bch_alloc_sectors_append_ptrs(struct bch_fs *, struct bkey_i_extent *,
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unsigned, struct open_bucket *, unsigned);
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void bch_alloc_sectors_done(struct bch_fs *, struct write_point *,
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struct open_bucket *);
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struct open_bucket *bch_alloc_sectors(struct bch_fs *, struct write_point *,
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struct bkey_i_extent *, unsigned, unsigned,
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enum alloc_reserve, struct closure *);
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static inline void bch_wake_allocator(struct bch_dev *ca)
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{
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struct task_struct *p;
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rcu_read_lock();
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if ((p = ACCESS_ONCE(ca->alloc_thread)))
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wake_up_process(p);
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rcu_read_unlock();
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}
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static inline struct bch_dev *dev_group_next(struct dev_group *devs,
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unsigned *iter)
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{
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struct bch_dev *ret = NULL;
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while (*iter < devs->nr &&
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!(ret = rcu_dereference_check(devs->d[*iter].dev,
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lockdep_is_held(&devs->lock))))
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(*iter)++;
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return ret;
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}
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#define group_for_each_dev(ca, devs, iter) \
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for ((iter) = 0; \
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((ca) = dev_group_next((devs), &(iter))); \
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(iter)++)
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#define open_bucket_for_each_ptr(_ob, _ptr) \
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for ((_ptr) = (_ob)->ptrs; \
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(_ptr) < (_ob)->ptrs + (_ob)->nr_ptrs; \
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(_ptr)++)
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void bch_recalc_capacity(struct bch_fs *);
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void bch_dev_allocator_stop(struct bch_dev *);
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int bch_dev_allocator_start(struct bch_dev *);
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void bch_fs_allocator_init(struct bch_fs *);
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#endif /* _BCACHE_ALLOC_H */
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