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Diffstat (limited to 'fs/bcachefs/alloc_background.h')
| -rw-r--r-- | fs/bcachefs/alloc_background.h | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/fs/bcachefs/alloc_background.h b/fs/bcachefs/alloc_background.h deleted file mode 100644 index 0cc5adc55b6f..000000000000 --- a/fs/bcachefs/alloc_background.h +++ /dev/null @@ -1,361 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _BCACHEFS_ALLOC_BACKGROUND_H -#define _BCACHEFS_ALLOC_BACKGROUND_H - -#include "bcachefs.h" -#include "alloc_types.h" -#include "buckets.h" -#include "debug.h" -#include "super.h" - -/* How out of date a pointer gen is allowed to be: */ -#define BUCKET_GC_GEN_MAX 96U - -static inline bool bch2_dev_bucket_exists(struct bch_fs *c, struct bpos pos) -{ - guard(rcu)(); - struct bch_dev *ca = bch2_dev_rcu_noerror(c, pos.inode); - return ca && bucket_valid(ca, pos.offset); -} - -static inline u64 bucket_to_u64(struct bpos bucket) -{ - return (bucket.inode << 48) | bucket.offset; -} - -static inline struct bpos u64_to_bucket(u64 bucket) -{ - return POS(bucket >> 48, bucket & ~(~0ULL << 48)); -} - -static inline u8 alloc_gc_gen(struct bch_alloc_v4 a) -{ - return a.gen - a.oldest_gen; -} - -static inline void alloc_to_bucket(struct bucket *dst, struct bch_alloc_v4 src) -{ - dst->gen = src.gen; - dst->data_type = src.data_type; - dst->stripe_sectors = src.stripe_sectors; - dst->dirty_sectors = src.dirty_sectors; - dst->cached_sectors = src.cached_sectors; - dst->stripe = src.stripe; -} - -static inline void __bucket_m_to_alloc(struct bch_alloc_v4 *dst, struct bucket src) -{ - dst->gen = src.gen; - dst->data_type = src.data_type; - dst->stripe_sectors = src.stripe_sectors; - dst->dirty_sectors = src.dirty_sectors; - dst->cached_sectors = src.cached_sectors; - dst->stripe = src.stripe; -} - -static inline struct bch_alloc_v4 bucket_m_to_alloc(struct bucket b) -{ - struct bch_alloc_v4 ret = {}; - __bucket_m_to_alloc(&ret, b); - return ret; -} - -static inline enum bch_data_type bucket_data_type(enum bch_data_type data_type) -{ - switch (data_type) { - case BCH_DATA_cached: - case BCH_DATA_stripe: - return BCH_DATA_user; - default: - return data_type; - } -} - -static inline bool bucket_data_type_mismatch(enum bch_data_type bucket, - enum bch_data_type ptr) -{ - return !data_type_is_empty(bucket) && - bucket_data_type(bucket) != bucket_data_type(ptr); -} - -/* - * It is my general preference to use unsigned types for unsigned quantities - - * however, these helpers are used in disk accounting calculations run by - * triggers where the output will be negated and added to an s64. unsigned is - * right out even though all these quantities will fit in 32 bits, since it - * won't be sign extended correctly; u64 will negate "correctly", but s64 is the - * simpler option here. - */ -static inline s64 bch2_bucket_sectors_total(struct bch_alloc_v4 a) -{ - return a.stripe_sectors + a.dirty_sectors + a.cached_sectors; -} - -static inline s64 bch2_bucket_sectors_dirty(struct bch_alloc_v4 a) -{ - return a.stripe_sectors + a.dirty_sectors; -} - -static inline s64 bch2_bucket_sectors(struct bch_alloc_v4 a) -{ - return a.data_type == BCH_DATA_cached - ? a.cached_sectors - : bch2_bucket_sectors_dirty(a); -} - -static inline s64 bch2_bucket_sectors_fragmented(struct bch_dev *ca, - struct bch_alloc_v4 a) -{ - int d = bch2_bucket_sectors(a); - - return d ? max(0, ca->mi.bucket_size - d) : 0; -} - -static inline s64 bch2_gc_bucket_sectors_fragmented(struct bch_dev *ca, struct bucket a) -{ - int d = a.stripe_sectors + a.dirty_sectors; - - return d ? max(0, ca->mi.bucket_size - d) : 0; -} - -static inline s64 bch2_bucket_sectors_unstriped(struct bch_alloc_v4 a) -{ - return a.data_type == BCH_DATA_stripe ? a.dirty_sectors : 0; -} - -static inline enum bch_data_type alloc_data_type(struct bch_alloc_v4 a, - enum bch_data_type data_type) -{ - if (a.stripe) - return data_type == BCH_DATA_parity ? data_type : BCH_DATA_stripe; - if (bch2_bucket_sectors_dirty(a)) - return bucket_data_type(data_type); - if (a.cached_sectors) - return BCH_DATA_cached; - if (BCH_ALLOC_V4_NEED_DISCARD(&a)) - return BCH_DATA_need_discard; - if (alloc_gc_gen(a) >= BUCKET_GC_GEN_MAX) - return BCH_DATA_need_gc_gens; - return BCH_DATA_free; -} - -static inline void alloc_data_type_set(struct bch_alloc_v4 *a, enum bch_data_type data_type) -{ - a->data_type = alloc_data_type(*a, data_type); -} - -static inline u64 alloc_lru_idx_read(struct bch_alloc_v4 a) -{ - return a.data_type == BCH_DATA_cached - ? a.io_time[READ] & LRU_TIME_MAX - : 0; -} - -#define DATA_TYPES_MOVABLE \ - ((1U << BCH_DATA_btree)| \ - (1U << BCH_DATA_user)| \ - (1U << BCH_DATA_stripe)) - -static inline bool data_type_movable(enum bch_data_type type) -{ - return (1U << type) & DATA_TYPES_MOVABLE; -} - -static inline u64 alloc_lru_idx_fragmentation(struct bch_alloc_v4 a, - struct bch_dev *ca) -{ - if (a.data_type >= BCH_DATA_NR) - return 0; - - if (!data_type_movable(a.data_type) || - !bch2_bucket_sectors_fragmented(ca, a)) - return 0; - - /* - * avoid overflowing LRU_TIME_BITS on a corrupted fs, when - * bucket_sectors_dirty is (much) bigger than bucket_size - */ - u64 d = min_t(s64, bch2_bucket_sectors_dirty(a), - ca->mi.bucket_size); - - return div_u64(d * (1ULL << 31), ca->mi.bucket_size); -} - -static inline u64 alloc_freespace_genbits(struct bch_alloc_v4 a) -{ - return ((u64) alloc_gc_gen(a) >> 4) << 56; -} - -static inline struct bpos alloc_freespace_pos(struct bpos pos, struct bch_alloc_v4 a) -{ - pos.offset |= alloc_freespace_genbits(a); - return pos; -} - -static inline unsigned alloc_v4_u64s_noerror(const struct bch_alloc_v4 *a) -{ - return (BCH_ALLOC_V4_BACKPOINTERS_START(a) ?: - BCH_ALLOC_V4_U64s_V0) + - BCH_ALLOC_V4_NR_BACKPOINTERS(a) * - (sizeof(struct bch_backpointer) / sizeof(u64)); -} - -static inline unsigned alloc_v4_u64s(const struct bch_alloc_v4 *a) -{ - unsigned ret = alloc_v4_u64s_noerror(a); - BUG_ON(ret > U8_MAX - BKEY_U64s); - return ret; -} - -static inline void set_alloc_v4_u64s(struct bkey_i_alloc_v4 *a) -{ - set_bkey_val_u64s(&a->k, alloc_v4_u64s(&a->v)); -} - -struct bkey_i_alloc_v4 * -bch2_trans_start_alloc_update_noupdate(struct btree_trans *, struct btree_iter *, struct bpos); -struct bkey_i_alloc_v4 * -bch2_trans_start_alloc_update(struct btree_trans *, struct bpos, - enum btree_iter_update_trigger_flags); - -void __bch2_alloc_to_v4(struct bkey_s_c, struct bch_alloc_v4 *); - -static inline const struct bch_alloc_v4 *bch2_alloc_to_v4(struct bkey_s_c k, struct bch_alloc_v4 *convert) -{ - const struct bch_alloc_v4 *ret; - - if (unlikely(k.k->type != KEY_TYPE_alloc_v4)) - goto slowpath; - - ret = bkey_s_c_to_alloc_v4(k).v; - if (BCH_ALLOC_V4_BACKPOINTERS_START(ret) != BCH_ALLOC_V4_U64s) - goto slowpath; - - return ret; -slowpath: - __bch2_alloc_to_v4(k, convert); - return convert; -} - -struct bkey_i_alloc_v4 *bch2_alloc_to_v4_mut(struct btree_trans *, struct bkey_s_c); - -int bch2_bucket_io_time_reset(struct btree_trans *, unsigned, size_t, int); - -int bch2_alloc_v1_validate(struct bch_fs *, struct bkey_s_c, - struct bkey_validate_context); -int bch2_alloc_v2_validate(struct bch_fs *, struct bkey_s_c, - struct bkey_validate_context); -int bch2_alloc_v3_validate(struct bch_fs *, struct bkey_s_c, - struct bkey_validate_context); -int bch2_alloc_v4_validate(struct bch_fs *, struct bkey_s_c, - struct bkey_validate_context); -void bch2_alloc_v4_swab(struct bkey_s); -void bch2_alloc_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); -void bch2_alloc_v4_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); - -#define bch2_bkey_ops_alloc ((struct bkey_ops) { \ - .key_validate = bch2_alloc_v1_validate, \ - .val_to_text = bch2_alloc_to_text, \ - .trigger = bch2_trigger_alloc, \ - .min_val_size = 8, \ -}) - -#define bch2_bkey_ops_alloc_v2 ((struct bkey_ops) { \ - .key_validate = bch2_alloc_v2_validate, \ - .val_to_text = bch2_alloc_to_text, \ - .trigger = bch2_trigger_alloc, \ - .min_val_size = 8, \ -}) - -#define bch2_bkey_ops_alloc_v3 ((struct bkey_ops) { \ - .key_validate = bch2_alloc_v3_validate, \ - .val_to_text = bch2_alloc_to_text, \ - .trigger = bch2_trigger_alloc, \ - .min_val_size = 16, \ -}) - -#define bch2_bkey_ops_alloc_v4 ((struct bkey_ops) { \ - .key_validate = bch2_alloc_v4_validate, \ - .val_to_text = bch2_alloc_v4_to_text, \ - .swab = bch2_alloc_v4_swab, \ - .trigger = bch2_trigger_alloc, \ - .min_val_size = 48, \ -}) - -int bch2_bucket_gens_validate(struct bch_fs *, struct bkey_s_c, - struct bkey_validate_context); -void bch2_bucket_gens_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); - -#define bch2_bkey_ops_bucket_gens ((struct bkey_ops) { \ - .key_validate = bch2_bucket_gens_validate, \ - .val_to_text = bch2_bucket_gens_to_text, \ -}) - -int bch2_bucket_gens_init(struct bch_fs *); - -static inline bool bkey_is_alloc(const struct bkey *k) -{ - return k->type == KEY_TYPE_alloc || - k->type == KEY_TYPE_alloc_v2 || - k->type == KEY_TYPE_alloc_v3; -} - -int bch2_alloc_read(struct bch_fs *); - -int bch2_alloc_key_to_dev_counters(struct btree_trans *, struct bch_dev *, - const struct bch_alloc_v4 *, - const struct bch_alloc_v4 *, unsigned); -int bch2_trigger_alloc(struct btree_trans *, enum btree_id, unsigned, - struct bkey_s_c, struct bkey_s, - enum btree_iter_update_trigger_flags); - -int bch2_check_discard_freespace_key(struct btree_trans *, struct btree_iter *, u8 *, bool); -int bch2_check_alloc_info(struct bch_fs *); -int bch2_check_alloc_to_lru_refs(struct bch_fs *); -void bch2_dev_do_discards(struct bch_dev *); -void bch2_do_discards(struct bch_fs *); - -static inline u64 should_invalidate_buckets(struct bch_dev *ca, - struct bch_dev_usage u) -{ - u64 want_free = ca->mi.nbuckets >> 7; - u64 free = max_t(s64, 0, - u.buckets[BCH_DATA_free] - + u.buckets[BCH_DATA_need_discard] - - bch2_dev_buckets_reserved(ca, BCH_WATERMARK_stripe)); - - return clamp_t(s64, want_free - free, 0, u.buckets[BCH_DATA_cached]); -} - -void bch2_dev_do_invalidates(struct bch_dev *); -void bch2_do_invalidates(struct bch_fs *); - -static inline struct bch_backpointer *alloc_v4_backpointers(struct bch_alloc_v4 *a) -{ - return (void *) ((u64 *) &a->v + - (BCH_ALLOC_V4_BACKPOINTERS_START(a) ?: - BCH_ALLOC_V4_U64s_V0)); -} - -static inline const struct bch_backpointer *alloc_v4_backpointers_c(const struct bch_alloc_v4 *a) -{ - return (void *) ((u64 *) &a->v + BCH_ALLOC_V4_BACKPOINTERS_START(a)); -} - -int bch2_dev_freespace_init(struct bch_fs *, struct bch_dev *, u64, u64); -int bch2_fs_freespace_init(struct bch_fs *); -int bch2_dev_remove_alloc(struct bch_fs *, struct bch_dev *); - -void bch2_recalc_capacity(struct bch_fs *); -u64 bch2_min_rw_member_capacity(struct bch_fs *); - -void bch2_dev_allocator_set_rw(struct bch_fs *, struct bch_dev *, bool); -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_background_exit(struct bch_dev *); -void bch2_dev_allocator_background_init(struct bch_dev *); - -void bch2_fs_allocator_background_init(struct bch_fs *); - -#endif /* _BCACHEFS_ALLOC_BACKGROUND_H */ |