diff options
author | Thomas Bertschinger <tahbertschinger@gmail.com> | 2024-01-15 23:41:02 -0700 |
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committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 01:47:05 -0500 |
commit | f5baaf48e3e82b1caf9f5cd1207d4d6feba3a2e5 (patch) | |
tree | 59f7b0e4667df7a9d3d5a45725f2aaab3e79b4c5 /libbcachefs/buckets.h | |
parent | fb35dbfdc5a9446fbb856dae5542b23963e28b89 (diff) |
move Rust sources to top level, C sources into c_src
This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:
$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command
instead of "./bcachefs command".
Building and installing is still:
$ make && make install
Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'libbcachefs/buckets.h')
-rw-r--r-- | libbcachefs/buckets.h | 461 |
1 files changed, 0 insertions, 461 deletions
diff --git a/libbcachefs/buckets.h b/libbcachefs/buckets.h deleted file mode 100644 index 2c95cc5d..00000000 --- a/libbcachefs/buckets.h +++ /dev/null @@ -1,461 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Code for manipulating bucket marks for garbage collection. - * - * Copyright 2014 Datera, Inc. - */ - -#ifndef _BUCKETS_H -#define _BUCKETS_H - -#include "buckets_types.h" -#include "extents.h" -#include "sb-members.h" - -static inline size_t sector_to_bucket(const struct bch_dev *ca, sector_t s) -{ - return div_u64(s, ca->mi.bucket_size); -} - -static inline sector_t bucket_to_sector(const struct bch_dev *ca, size_t b) -{ - return ((sector_t) b) * ca->mi.bucket_size; -} - -static inline sector_t bucket_remainder(const struct bch_dev *ca, sector_t s) -{ - u32 remainder; - - div_u64_rem(s, ca->mi.bucket_size, &remainder); - return remainder; -} - -static inline size_t sector_to_bucket_and_offset(const struct bch_dev *ca, sector_t s, - u32 *offset) -{ - return div_u64_rem(s, ca->mi.bucket_size, offset); -} - -#define for_each_bucket(_b, _buckets) \ - for (_b = (_buckets)->b + (_buckets)->first_bucket; \ - _b < (_buckets)->b + (_buckets)->nbuckets; _b++) - -/* - * Ugly hack alert: - * - * We need to cram a spinlock in a single byte, because that's what we have left - * in struct bucket, and we care about the size of these - during fsck, we need - * in memory state for every single bucket on every device. - * - * We used to do - * while (xchg(&b->lock, 1) cpu_relax(); - * but, it turns out not all architectures support xchg on a single byte. - * - * So now we use bit_spin_lock(), with fun games since we can't burn a whole - * ulong for this - we just need to make sure the lock bit always ends up in the - * first byte. - */ - -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ -#define BUCKET_LOCK_BITNR 0 -#else -#define BUCKET_LOCK_BITNR (BITS_PER_LONG - 1) -#endif - -union ulong_byte_assert { - ulong ulong; - u8 byte; -}; - -static inline void bucket_unlock(struct bucket *b) -{ - BUILD_BUG_ON(!((union ulong_byte_assert) { .ulong = 1UL << BUCKET_LOCK_BITNR }).byte); - - clear_bit_unlock(BUCKET_LOCK_BITNR, (void *) &b->lock); - wake_up_bit((void *) &b->lock, BUCKET_LOCK_BITNR); -} - -static inline void bucket_lock(struct bucket *b) -{ - wait_on_bit_lock((void *) &b->lock, BUCKET_LOCK_BITNR, - TASK_UNINTERRUPTIBLE); -} - -static inline struct bucket_array *gc_bucket_array(struct bch_dev *ca) -{ - return rcu_dereference_check(ca->buckets_gc, - !ca->fs || - percpu_rwsem_is_held(&ca->fs->mark_lock) || - lockdep_is_held(&ca->fs->gc_lock) || - lockdep_is_held(&ca->bucket_lock)); -} - -static inline struct bucket *gc_bucket(struct bch_dev *ca, size_t b) -{ - struct bucket_array *buckets = gc_bucket_array(ca); - - BUG_ON(b < buckets->first_bucket || b >= buckets->nbuckets); - return buckets->b + b; -} - -static inline struct bucket_gens *bucket_gens(struct bch_dev *ca) -{ - return rcu_dereference_check(ca->bucket_gens, - !ca->fs || - percpu_rwsem_is_held(&ca->fs->mark_lock) || - lockdep_is_held(&ca->fs->gc_lock) || - lockdep_is_held(&ca->bucket_lock)); -} - -static inline u8 *bucket_gen(struct bch_dev *ca, size_t b) -{ - struct bucket_gens *gens = bucket_gens(ca); - - BUG_ON(b < gens->first_bucket || b >= gens->nbuckets); - return gens->b + b; -} - -static inline size_t PTR_BUCKET_NR(const struct bch_dev *ca, - const struct bch_extent_ptr *ptr) -{ - return sector_to_bucket(ca, ptr->offset); -} - -static inline struct bpos PTR_BUCKET_POS(const struct bch_fs *c, - const struct bch_extent_ptr *ptr) -{ - struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev); - - return POS(ptr->dev, PTR_BUCKET_NR(ca, ptr)); -} - -static inline struct bpos PTR_BUCKET_POS_OFFSET(const struct bch_fs *c, - const struct bch_extent_ptr *ptr, - u32 *bucket_offset) -{ - struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev); - - return POS(ptr->dev, sector_to_bucket_and_offset(ca, ptr->offset, bucket_offset)); -} - -static inline struct bucket *PTR_GC_BUCKET(struct bch_dev *ca, - const struct bch_extent_ptr *ptr) -{ - return gc_bucket(ca, PTR_BUCKET_NR(ca, ptr)); -} - -static inline enum bch_data_type ptr_data_type(const struct bkey *k, - const struct bch_extent_ptr *ptr) -{ - if (bkey_is_btree_ptr(k)) - return BCH_DATA_btree; - - return ptr->cached ? BCH_DATA_cached : BCH_DATA_user; -} - -static inline s64 ptr_disk_sectors(s64 sectors, struct extent_ptr_decoded p) -{ - EBUG_ON(sectors < 0); - - return crc_is_compressed(p.crc) - ? DIV_ROUND_UP_ULL(sectors * p.crc.compressed_size, - p.crc.uncompressed_size) - : sectors; -} - -static inline int gen_cmp(u8 a, u8 b) -{ - return (s8) (a - b); -} - -static inline int gen_after(u8 a, u8 b) -{ - int r = gen_cmp(a, b); - - return r > 0 ? r : 0; -} - -/** - * ptr_stale() - check if a pointer points into a bucket that has been - * invalidated. - */ -static inline u8 ptr_stale(struct bch_dev *ca, - const struct bch_extent_ptr *ptr) -{ - u8 ret; - - rcu_read_lock(); - ret = gen_after(*bucket_gen(ca, PTR_BUCKET_NR(ca, ptr)), ptr->gen); - rcu_read_unlock(); - - return ret; -} - -/* Device usage: */ - -void bch2_dev_usage_read_fast(struct bch_dev *, struct bch_dev_usage *); -static inline struct bch_dev_usage bch2_dev_usage_read(struct bch_dev *ca) -{ - struct bch_dev_usage ret; - - bch2_dev_usage_read_fast(ca, &ret); - return ret; -} - -void bch2_dev_usage_init(struct bch_dev *); -void bch2_dev_usage_to_text(struct printbuf *, struct bch_dev_usage *); - -static inline u64 bch2_dev_buckets_reserved(struct bch_dev *ca, enum bch_watermark watermark) -{ - s64 reserved = 0; - - switch (watermark) { - case BCH_WATERMARK_NR: - BUG(); - case BCH_WATERMARK_stripe: - reserved += ca->mi.nbuckets >> 6; - fallthrough; - case BCH_WATERMARK_normal: - reserved += ca->mi.nbuckets >> 6; - fallthrough; - case BCH_WATERMARK_copygc: - reserved += ca->nr_btree_reserve; - fallthrough; - case BCH_WATERMARK_btree: - reserved += ca->nr_btree_reserve; - fallthrough; - case BCH_WATERMARK_btree_copygc: - case BCH_WATERMARK_reclaim: - break; - } - - return reserved; -} - -static inline u64 dev_buckets_free(struct bch_dev *ca, - struct bch_dev_usage usage, - enum bch_watermark watermark) -{ - return max_t(s64, 0, - usage.d[BCH_DATA_free].buckets - - ca->nr_open_buckets - - bch2_dev_buckets_reserved(ca, watermark)); -} - -static inline u64 __dev_buckets_available(struct bch_dev *ca, - struct bch_dev_usage usage, - enum bch_watermark watermark) -{ - return max_t(s64, 0, - usage.d[BCH_DATA_free].buckets - + usage.d[BCH_DATA_cached].buckets - + usage.d[BCH_DATA_need_gc_gens].buckets - + usage.d[BCH_DATA_need_discard].buckets - - ca->nr_open_buckets - - bch2_dev_buckets_reserved(ca, watermark)); -} - -static inline u64 dev_buckets_available(struct bch_dev *ca, - enum bch_watermark watermark) -{ - return __dev_buckets_available(ca, bch2_dev_usage_read(ca), watermark); -} - -/* Filesystem usage: */ - -static inline unsigned __fs_usage_u64s(unsigned nr_replicas) -{ - return sizeof(struct bch_fs_usage) / sizeof(u64) + nr_replicas; -} - -static inline unsigned fs_usage_u64s(struct bch_fs *c) -{ - return __fs_usage_u64s(READ_ONCE(c->replicas.nr)); -} - -static inline unsigned __fs_usage_online_u64s(unsigned nr_replicas) -{ - return sizeof(struct bch_fs_usage_online) / sizeof(u64) + nr_replicas; -} - -static inline unsigned fs_usage_online_u64s(struct bch_fs *c) -{ - return __fs_usage_online_u64s(READ_ONCE(c->replicas.nr)); -} - -static inline unsigned dev_usage_u64s(void) -{ - return sizeof(struct bch_dev_usage) / sizeof(u64); -} - -u64 bch2_fs_usage_read_one(struct bch_fs *, u64 *); - -struct bch_fs_usage_online *bch2_fs_usage_read(struct bch_fs *); - -void bch2_fs_usage_acc_to_base(struct bch_fs *, unsigned); - -void bch2_fs_usage_to_text(struct printbuf *, - struct bch_fs *, struct bch_fs_usage_online *); - -u64 bch2_fs_sectors_used(struct bch_fs *, struct bch_fs_usage_online *); - -struct bch_fs_usage_short -bch2_fs_usage_read_short(struct bch_fs *); - -void bch2_dev_usage_update(struct bch_fs *, struct bch_dev *, - const struct bch_alloc_v4 *, - const struct bch_alloc_v4 *, u64, bool); -void bch2_dev_usage_update_m(struct bch_fs *, struct bch_dev *, - struct bucket *, struct bucket *); - -/* key/bucket marking: */ - -static inline struct bch_fs_usage *fs_usage_ptr(struct bch_fs *c, - unsigned journal_seq, - bool gc) -{ - percpu_rwsem_assert_held(&c->mark_lock); - BUG_ON(!gc && !journal_seq); - - return this_cpu_ptr(gc - ? c->usage_gc - : c->usage[journal_seq & JOURNAL_BUF_MASK]); -} - -int bch2_update_replicas(struct bch_fs *, struct bkey_s_c, - struct bch_replicas_entry_v1 *, s64, - unsigned, bool); -int bch2_update_replicas_list(struct btree_trans *, - struct bch_replicas_entry_v1 *, s64); -int bch2_update_cached_sectors_list(struct btree_trans *, unsigned, s64); -int bch2_replicas_deltas_realloc(struct btree_trans *, unsigned); - -void bch2_fs_usage_initialize(struct bch_fs *); - -int bch2_check_bucket_ref(struct btree_trans *, struct bkey_s_c, - const struct bch_extent_ptr *, - s64, enum bch_data_type, u8, u8, u32); - -int bch2_mark_metadata_bucket(struct bch_fs *, struct bch_dev *, - size_t, enum bch_data_type, unsigned, - struct gc_pos, unsigned); - -int bch2_trigger_extent(struct btree_trans *, enum btree_id, unsigned, - struct bkey_s_c, struct bkey_s, unsigned); -int bch2_trigger_reservation(struct btree_trans *, enum btree_id, unsigned, - struct bkey_s_c, struct bkey_s, unsigned); - -#define trigger_run_overwrite_then_insert(_fn, _trans, _btree_id, _level, _old, _new, _flags)\ -({ \ - int ret = 0; \ - \ - if (_old.k->type) \ - ret = _fn(_trans, _btree_id, _level, _old, _flags & ~BTREE_TRIGGER_INSERT); \ - if (!ret && _new.k->type) \ - ret = _fn(_trans, _btree_id, _level, _new.s_c, _flags & ~BTREE_TRIGGER_OVERWRITE);\ - ret; \ -}) - -void bch2_trans_fs_usage_revert(struct btree_trans *, struct replicas_delta_list *); -int bch2_trans_fs_usage_apply(struct btree_trans *, struct replicas_delta_list *); - -int bch2_trans_mark_metadata_bucket(struct btree_trans *, struct bch_dev *, - size_t, enum bch_data_type, unsigned); -int bch2_trans_mark_dev_sb(struct bch_fs *, struct bch_dev *); -int bch2_trans_mark_dev_sbs(struct bch_fs *); - -static inline bool is_superblock_bucket(struct bch_dev *ca, u64 b) -{ - struct bch_sb_layout *layout = &ca->disk_sb.sb->layout; - u64 b_offset = bucket_to_sector(ca, b); - u64 b_end = bucket_to_sector(ca, b + 1); - unsigned i; - - if (!b) - return true; - - for (i = 0; i < layout->nr_superblocks; i++) { - u64 offset = le64_to_cpu(layout->sb_offset[i]); - u64 end = offset + (1 << layout->sb_max_size_bits); - - if (!(offset >= b_end || end <= b_offset)) - return true; - } - - return false; -} - -/* disk reservations: */ - -static inline void bch2_disk_reservation_put(struct bch_fs *c, - struct disk_reservation *res) -{ - if (res->sectors) { - this_cpu_sub(*c->online_reserved, res->sectors); - res->sectors = 0; - } -} - -#define BCH_DISK_RESERVATION_NOFAIL (1 << 0) - -int __bch2_disk_reservation_add(struct bch_fs *, - struct disk_reservation *, - u64, int); - -static inline int bch2_disk_reservation_add(struct bch_fs *c, struct disk_reservation *res, - u64 sectors, int flags) -{ -#ifdef __KERNEL__ - u64 old, new; - - do { - old = this_cpu_read(c->pcpu->sectors_available); - if (sectors > old) - return __bch2_disk_reservation_add(c, res, sectors, flags); - - new = old - sectors; - } while (this_cpu_cmpxchg(c->pcpu->sectors_available, old, new) != old); - - this_cpu_add(*c->online_reserved, sectors); - res->sectors += sectors; - return 0; -#else - return __bch2_disk_reservation_add(c, res, sectors, flags); -#endif -} - -static inline struct disk_reservation -bch2_disk_reservation_init(struct bch_fs *c, unsigned nr_replicas) -{ - return (struct disk_reservation) { - .sectors = 0, -#if 0 - /* not used yet: */ - .gen = c->capacity_gen, -#endif - .nr_replicas = nr_replicas, - }; -} - -static inline int bch2_disk_reservation_get(struct bch_fs *c, - struct disk_reservation *res, - u64 sectors, unsigned nr_replicas, - int flags) -{ - *res = bch2_disk_reservation_init(c, nr_replicas); - - return bch2_disk_reservation_add(c, res, sectors * nr_replicas, flags); -} - -#define RESERVE_FACTOR 6 - -static inline u64 avail_factor(u64 r) -{ - return div_u64(r << RESERVE_FACTOR, (1 << RESERVE_FACTOR) + 1); -} - -int bch2_dev_buckets_resize(struct bch_fs *, struct bch_dev *, u64); -void bch2_dev_buckets_free(struct bch_dev *); -int bch2_dev_buckets_alloc(struct bch_fs *, struct bch_dev *); - -#endif /* _BUCKETS_H */ |