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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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bfcf840ddf
More work towards getting rid of the in memory struct bucket: this path adds code for marking superblock and journal buckets via the btree, and uses it in the device add and journal resize paths. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_ALLOC_BACKGROUND_H
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#define _BCACHEFS_ALLOC_BACKGROUND_H
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#include "bcachefs.h"
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#include "alloc_types.h"
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#include "debug.h"
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struct bkey_alloc_unpacked {
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u8 gen;
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#define x(_name, _bits) u##_bits _name;
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BCH_ALLOC_FIELDS()
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#undef x
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};
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/* How out of date a pointer gen is allowed to be: */
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#define BUCKET_GC_GEN_MAX 96U
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/* returns true if not equal */
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static inline bool bkey_alloc_unpacked_cmp(struct bkey_alloc_unpacked l,
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struct bkey_alloc_unpacked r)
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{
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return l.gen != r.gen
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#define x(_name, _bits) || l._name != r._name
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BCH_ALLOC_FIELDS()
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#undef x
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;
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}
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struct bkey_alloc_unpacked bch2_alloc_unpack(struct bkey_s_c);
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void bch2_alloc_pack(struct bkey_i_alloc *,
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const struct bkey_alloc_unpacked);
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int bch2_bucket_io_time_reset(struct btree_trans *, unsigned, size_t, int);
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static inline struct bkey_alloc_unpacked
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alloc_mem_to_key(struct bucket *g, struct bucket_mark m)
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{
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return (struct bkey_alloc_unpacked) {
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.gen = m.gen,
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.oldest_gen = g->oldest_gen,
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.data_type = m.data_type,
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.dirty_sectors = m.dirty_sectors,
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.cached_sectors = m.cached_sectors,
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.read_time = g->io_time[READ],
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.write_time = g->io_time[WRITE],
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};
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}
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#define ALLOC_SCAN_BATCH(ca) max_t(size_t, 1, (ca)->mi.nbuckets >> 9)
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const char *bch2_alloc_invalid(const struct bch_fs *, struct bkey_s_c);
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void bch2_alloc_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
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#define bch2_bkey_ops_alloc (struct bkey_ops) { \
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.key_invalid = bch2_alloc_invalid, \
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.val_to_text = bch2_alloc_to_text, \
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}
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struct journal_keys;
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int bch2_alloc_read(struct bch_fs *, struct journal_keys *);
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static inline void bch2_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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p = rcu_dereference(ca->alloc_thread);
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if (p) {
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wake_up_process(p);
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ca->allocator_state = ALLOCATOR_RUNNING;
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}
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rcu_read_unlock();
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}
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static inline void verify_not_on_freelist(struct bch_fs *c, struct bch_dev *ca,
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size_t bucket)
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{
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if (bch2_expensive_debug_checks) {
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size_t iter;
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long i;
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unsigned j;
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for (j = 0; j < RESERVE_NR; j++)
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fifo_for_each_entry(i, &ca->free[j], iter)
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BUG_ON(i == bucket);
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fifo_for_each_entry(i, &ca->free_inc, iter)
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BUG_ON(i == bucket);
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}
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}
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void bch2_recalc_capacity(struct bch_fs *);
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void bch2_dev_allocator_remove(struct bch_fs *, struct bch_dev *);
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void bch2_dev_allocator_add(struct bch_fs *, struct bch_dev *);
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void bch2_dev_allocator_quiesce(struct bch_fs *, struct bch_dev *);
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void bch2_dev_allocator_stop(struct bch_dev *);
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int bch2_dev_allocator_start(struct bch_dev *);
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int bch2_alloc_write(struct bch_fs *, unsigned);
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void bch2_fs_allocator_background_init(struct bch_fs *);
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#endif /* _BCACHEFS_ALLOC_BACKGROUND_H */
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