diff options
Diffstat (limited to 'fs/bcachefs/btree_iter.h')
-rw-r--r-- | fs/bcachefs/btree_iter.h | 587 |
1 files changed, 529 insertions, 58 deletions
diff --git a/fs/bcachefs/btree_iter.h b/fs/bcachefs/btree_iter.h index 981817247dfe..6b7cef145ced 100644 --- a/fs/bcachefs/btree_iter.h +++ b/fs/bcachefs/btree_iter.h @@ -5,6 +5,8 @@ #include "bset.h" #include "btree_types.h" +#include <trace/events/bcachefs.h> + static inline void __btree_path_get(struct btree_path *path, bool intent) { path->ref++; @@ -50,13 +52,18 @@ static inline struct btree *btree_node_parent(struct btree_path *path, return btree_path_node(path, b->c.level + 1); } -static inline int btree_iter_err(const struct btree_iter *iter) +/* Iterate over paths within a transaction: */ + +void __bch2_btree_trans_sort_paths(struct btree_trans *); + +static inline void btree_trans_sort_paths(struct btree_trans *trans) { - return iter->flags & BTREE_ITER_ERROR ? -EIO : 0; + if (!IS_ENABLED(CONFIG_BCACHEFS_DEBUG) && + trans->paths_sorted) + return; + __bch2_btree_trans_sort_paths(trans); } -/* Iterate over paths within a transaction: */ - static inline struct btree_path * __trans_next_path(struct btree_trans *trans, unsigned idx) { @@ -75,11 +82,14 @@ __trans_next_path(struct btree_trans *trans, unsigned idx) return &trans->paths[idx]; } -#define trans_for_each_path(_trans, _path) \ - for (_path = __trans_next_path((_trans), 0); \ +#define trans_for_each_path_from(_trans, _path, _start) \ + for (_path = __trans_next_path((_trans), _start); \ (_path); \ _path = __trans_next_path((_trans), (_path)->idx + 1)) +#define trans_for_each_path(_trans, _path) \ + trans_for_each_path_from(_trans, _path, 0) + static inline struct btree_path *next_btree_path(struct btree_trans *trans, struct btree_path *path) { unsigned idx = path ? path->sorted_idx + 1 : 0; @@ -93,9 +103,10 @@ static inline struct btree_path *next_btree_path(struct btree_trans *trans, stru static inline struct btree_path *prev_btree_path(struct btree_trans *trans, struct btree_path *path) { - EBUG_ON(path->sorted_idx >= trans->nr_sorted); - return path->sorted_idx - ? trans->paths + trans->sorted[path->sorted_idx - 1] + unsigned idx = path ? path->sorted_idx : trans->nr_sorted; + + return idx + ? trans->paths + trans->sorted[idx - 1] : NULL; } @@ -104,6 +115,11 @@ static inline struct btree_path *prev_btree_path(struct btree_trans *trans, stru ((_path) = (_trans)->paths + trans->sorted[_i]), (_i) < (_trans)->nr_sorted;\ _i++) +#define trans_for_each_path_inorder_reverse(_trans, _path, _i) \ + for (_i = trans->nr_sorted - 1; \ + ((_path) = (_trans)->paths + trans->sorted[_i]), (_i) >= 0;\ + --_i) + static inline bool __path_has_node(const struct btree_path *path, const struct btree *b) { @@ -129,23 +145,74 @@ __trans_next_path_with_node(struct btree_trans *trans, struct btree *b, _path = __trans_next_path_with_node((_trans), (_b), \ (_path)->idx + 1)) -struct btree_path * __must_check -bch2_btree_path_make_mut(struct btree_trans *, struct btree_path *, +struct btree_path *__bch2_btree_path_make_mut(struct btree_trans *, struct btree_path *, bool, unsigned long); + +static inline struct btree_path * __must_check +bch2_btree_path_make_mut(struct btree_trans *trans, + struct btree_path *path, bool intent, + unsigned long ip) +{ + if (path->ref > 1 || path->preserve) + path = __bch2_btree_path_make_mut(trans, path, intent, ip); + path->should_be_locked = false; + return path; +} + +struct btree_path * __must_check +__bch2_btree_path_set_pos(struct btree_trans *, struct btree_path *, + struct bpos, bool, unsigned long, int); + +static inline struct btree_path * __must_check +bch2_btree_path_set_pos(struct btree_trans *trans, + struct btree_path *path, struct bpos new_pos, + bool intent, unsigned long ip) +{ + int cmp = bpos_cmp(new_pos, path->pos); + + return cmp + ? __bch2_btree_path_set_pos(trans, path, new_pos, intent, ip, cmp) + : path; +} + +int __must_check bch2_btree_path_traverse_one(struct btree_trans *, struct btree_path *, + unsigned, unsigned long); + +static inline int __must_check bch2_btree_path_traverse(struct btree_trans *trans, + struct btree_path *path, unsigned flags) +{ + if (path->uptodate < BTREE_ITER_NEED_RELOCK) + return 0; + + return bch2_btree_path_traverse_one(trans, path, flags, _RET_IP_); +} + int __must_check bch2_btree_path_traverse(struct btree_trans *, struct btree_path *, unsigned); struct btree_path *bch2_path_get(struct btree_trans *, enum btree_id, struct bpos, unsigned, unsigned, unsigned, unsigned long); struct bkey_s_c bch2_btree_path_peek_slot(struct btree_path *, struct bkey *); +struct bkey_i *bch2_btree_journal_peek_slot(struct btree_trans *, + struct btree_iter *, struct bpos); + +void bch2_btree_path_level_init(struct btree_trans *, struct btree_path *, struct btree *); + +int __bch2_trans_mutex_lock(struct btree_trans *, struct mutex *); + +static inline int bch2_trans_mutex_lock(struct btree_trans *trans, struct mutex *lock) +{ + return mutex_trylock(lock) + ? 0 + : __bch2_trans_mutex_lock(trans, lock); +} + #ifdef CONFIG_BCACHEFS_DEBUG void bch2_trans_verify_paths(struct btree_trans *); -void bch2_trans_verify_locks(struct btree_trans *); void bch2_assert_pos_locked(struct btree_trans *, enum btree_id, struct bpos, bool); #else static inline void bch2_trans_verify_paths(struct btree_trans *trans) {} -static inline void bch2_trans_verify_locks(struct btree_trans *trans) {} static inline void bch2_assert_pos_locked(struct btree_trans *trans, enum btree_id id, struct bpos pos, bool key_cache) {} #endif @@ -156,46 +223,67 @@ void bch2_btree_node_iter_fix(struct btree_trans *trans, struct btree_path *, struct btree *, struct btree_node_iter *, struct bkey_packed *, unsigned, unsigned); -bool bch2_btree_path_relock_intent(struct btree_trans *, struct btree_path *); +int bch2_btree_path_relock_intent(struct btree_trans *, struct btree_path *); void bch2_path_put(struct btree_trans *, struct btree_path *, bool); -bool bch2_trans_relock(struct btree_trans *); +int bch2_trans_relock(struct btree_trans *); +int bch2_trans_relock_notrace(struct btree_trans *); void bch2_trans_unlock(struct btree_trans *); +bool bch2_trans_locked(struct btree_trans *); -__always_inline -static inline int btree_trans_restart(struct btree_trans *trans) +static inline bool trans_was_restarted(struct btree_trans *trans, u32 restart_count) { - trans->restarted = true; - bch2_trans_unlock(trans); - return -EINTR; + return restart_count != trans->restart_count; } -bool bch2_btree_node_upgrade(struct btree_trans *, - struct btree_path *, unsigned); +void bch2_trans_restart_error(struct btree_trans *, u32); + +static inline void bch2_trans_verify_not_restarted(struct btree_trans *trans, + u32 restart_count) +{ + if (trans_was_restarted(trans, restart_count)) + bch2_trans_restart_error(trans, restart_count); +} -bool __bch2_btree_path_upgrade(struct btree_trans *, - struct btree_path *, unsigned); +void bch2_trans_in_restart_error(struct btree_trans *); -static inline bool bch2_btree_path_upgrade(struct btree_trans *trans, - struct btree_path *path, - unsigned new_locks_want) +static inline void bch2_trans_verify_not_in_restart(struct btree_trans *trans) { - new_locks_want = min(new_locks_want, BTREE_MAX_DEPTH); + if (trans->restarted) + bch2_trans_in_restart_error(trans); +} + +__always_inline +static inline int btree_trans_restart_nounlock(struct btree_trans *trans, int err) +{ + BUG_ON(err <= 0); + BUG_ON(!bch2_err_matches(err, BCH_ERR_transaction_restart)); - return path->locks_want < new_locks_want - ? __bch2_btree_path_upgrade(trans, path, new_locks_want) - : path->uptodate == BTREE_ITER_UPTODATE; + trans->restarted = err; + trans->last_restarted_ip = _THIS_IP_; + return -err; +} + +__always_inline +static inline int btree_trans_restart(struct btree_trans *trans, int err) +{ + btree_trans_restart_nounlock(trans, err); + return -err; } -void __bch2_btree_path_downgrade(struct btree_path *, unsigned); +bool bch2_btree_node_upgrade(struct btree_trans *, + struct btree_path *, unsigned); -static inline void bch2_btree_path_downgrade(struct btree_path *path) +void __bch2_btree_path_downgrade(struct btree_trans *, struct btree_path *, unsigned); + +static inline void bch2_btree_path_downgrade(struct btree_trans *trans, + struct btree_path *path) { unsigned new_locks_want = path->level + !!path->intent_ref; if (path->locks_want > new_locks_want) - __bch2_btree_path_downgrade(path, new_locks_want); + __bch2_btree_path_downgrade(trans, path, new_locks_want); } void bch2_trans_downgrade(struct btree_trans *); @@ -207,11 +295,19 @@ int __must_check __bch2_btree_iter_traverse(struct btree_iter *iter); int __must_check bch2_btree_iter_traverse(struct btree_iter *); struct btree *bch2_btree_iter_peek_node(struct btree_iter *); +struct btree *bch2_btree_iter_peek_node_and_restart(struct btree_iter *); struct btree *bch2_btree_iter_next_node(struct btree_iter *); -struct bkey_s_c bch2_btree_iter_peek(struct btree_iter *); +struct bkey_s_c bch2_btree_iter_peek_upto(struct btree_iter *, struct bpos); struct bkey_s_c bch2_btree_iter_next(struct btree_iter *); +struct bkey_s_c bch2_btree_iter_peek_all_levels(struct btree_iter *); + +static inline struct bkey_s_c bch2_btree_iter_peek(struct btree_iter *iter) +{ + return bch2_btree_iter_peek_upto(iter, SPOS_MAX); +} + struct bkey_s_c bch2_btree_iter_peek_prev(struct btree_iter *); struct bkey_s_c bch2_btree_iter_prev(struct btree_iter *); @@ -260,8 +356,85 @@ static inline void bch2_btree_iter_set_snapshot(struct btree_iter *iter, u32 sna } void bch2_trans_iter_exit(struct btree_trans *, struct btree_iter *); -void bch2_trans_iter_init(struct btree_trans *, struct btree_iter *, + +static inline unsigned __bch2_btree_iter_flags(struct btree_trans *trans, + unsigned btree_id, + unsigned flags) +{ + if (flags & BTREE_ITER_ALL_LEVELS) + flags |= BTREE_ITER_ALL_SNAPSHOTS|__BTREE_ITER_ALL_SNAPSHOTS; + + if (!(flags & (BTREE_ITER_ALL_SNAPSHOTS|BTREE_ITER_NOT_EXTENTS)) && + btree_node_type_is_extents(btree_id)) + flags |= BTREE_ITER_IS_EXTENTS; + + if (!(flags & __BTREE_ITER_ALL_SNAPSHOTS) && + !btree_type_has_snapshots(btree_id)) + flags &= ~BTREE_ITER_ALL_SNAPSHOTS; + + if (!(flags & BTREE_ITER_ALL_SNAPSHOTS) && + btree_type_has_snapshots(btree_id)) + flags |= BTREE_ITER_FILTER_SNAPSHOTS; + + if (trans->journal_replay_not_finished) + flags |= BTREE_ITER_WITH_JOURNAL; + + return flags; +} + +static inline unsigned bch2_btree_iter_flags(struct btree_trans *trans, + unsigned btree_id, + unsigned flags) +{ + if (!btree_id_cached(trans->c, btree_id)) { + flags &= ~BTREE_ITER_CACHED; + flags &= ~BTREE_ITER_WITH_KEY_CACHE; + } else if (!(flags & BTREE_ITER_CACHED)) + flags |= BTREE_ITER_WITH_KEY_CACHE; + + return __bch2_btree_iter_flags(trans, btree_id, flags); +} + +static inline void bch2_trans_iter_init_common(struct btree_trans *trans, + struct btree_iter *iter, + unsigned btree_id, struct bpos pos, + unsigned locks_want, + unsigned depth, + unsigned flags, + unsigned long ip) +{ + memset(iter, 0, sizeof(*iter)); + iter->trans = trans; + iter->btree_id = btree_id; + iter->flags = flags; + iter->snapshot = pos.snapshot; + iter->pos = pos; + iter->k.p = pos; + +#ifdef CONFIG_BCACHEFS_DEBUG + iter->ip_allocated = ip; +#endif + iter->path = bch2_path_get(trans, btree_id, iter->pos, + locks_want, depth, flags, ip); +} + +void bch2_trans_iter_init_outlined(struct btree_trans *, struct btree_iter *, unsigned, struct bpos, unsigned); + +static inline void bch2_trans_iter_init(struct btree_trans *trans, + struct btree_iter *iter, + unsigned btree_id, struct bpos pos, + unsigned flags) +{ + if (__builtin_constant_p(btree_id) && + __builtin_constant_p(flags)) + bch2_trans_iter_init_common(trans, iter, btree_id, pos, 0, 0, + bch2_btree_iter_flags(trans, btree_id, flags), + _THIS_IP_); + else + bch2_trans_iter_init_outlined(trans, iter, btree_id, pos, flags); +} + void bch2_trans_node_iter_init(struct btree_trans *, struct btree_iter *, enum btree_id, struct bpos, unsigned, unsigned, unsigned); @@ -269,29 +442,96 @@ void bch2_trans_copy_iter(struct btree_iter *, struct btree_iter *); static inline void set_btree_iter_dontneed(struct btree_iter *iter) { - iter->path->preserve = false; + if (!iter->trans->restarted) + iter->path->preserve = false; } -void *bch2_trans_kmalloc(struct btree_trans *, size_t); -void bch2_trans_begin(struct btree_trans *); +void *__bch2_trans_kmalloc(struct btree_trans *, size_t); -static inline struct btree * -__btree_iter_peek_node_and_restart(struct btree_trans *trans, struct btree_iter *iter) +static inline void *bch2_trans_kmalloc(struct btree_trans *trans, size_t size) { - struct btree *b; + size = roundup(size, 8); - while (b = bch2_btree_iter_peek_node(iter), - PTR_ERR_OR_ZERO(b) == -EINTR) - bch2_trans_begin(trans); + if (likely(trans->mem_top + size <= trans->mem_bytes)) { + void *p = trans->mem + trans->mem_top; + + trans->mem_top += size; + memset(p, 0, size); + return p; + } else { + return __bch2_trans_kmalloc(trans, size); + } +} + +static inline void *bch2_trans_kmalloc_nomemzero(struct btree_trans *trans, size_t size) +{ + size = roundup(size, 8); + + if (likely(trans->mem_top + size <= trans->mem_bytes)) { + void *p = trans->mem + trans->mem_top; + + trans->mem_top += size; + return p; + } else { + return __bch2_trans_kmalloc(trans, size); + } +} + +static inline struct bkey_i *bch2_bkey_make_mut(struct btree_trans *trans, struct bkey_s_c k) +{ + struct bkey_i *mut = bch2_trans_kmalloc_nomemzero(trans, bkey_bytes(k.k)); - return b; + if (!IS_ERR(mut)) + bkey_reassemble(mut, k); + return mut; } +static inline struct bkey_i *bch2_bkey_get_mut(struct btree_trans *trans, + struct btree_iter *iter) +{ + struct bkey_s_c k = bch2_btree_iter_peek_slot(iter); + + return unlikely(IS_ERR(k.k)) + ? ERR_CAST(k.k) + : bch2_bkey_make_mut(trans, k); +} + +#define bch2_bkey_get_mut_typed(_trans, _iter, _type) \ +({ \ + struct bkey_i *_k = bch2_bkey_get_mut(_trans, _iter); \ + struct bkey_i_##_type *_ret; \ + \ + if (IS_ERR(_k)) \ + _ret = ERR_CAST(_k); \ + else if (unlikely(_k->k.type != KEY_TYPE_##_type)) \ + _ret = ERR_PTR(-ENOENT); \ + else \ + _ret = bkey_i_to_##_type(_k); \ + _ret; \ +}) + +#define bch2_bkey_alloc(_trans, _iter, _type) \ +({ \ + struct bkey_i_##_type *_k = bch2_trans_kmalloc_nomemzero(_trans, sizeof(*_k));\ + if (!IS_ERR(_k)) { \ + bkey_##_type##_init(&_k->k_i); \ + _k->k.p = (_iter)->pos; \ + } \ + _k; \ +}) + +u32 bch2_trans_begin(struct btree_trans *); + +/* + * XXX + * this does not handle transaction restarts from bch2_btree_iter_next_node() + * correctly + */ #define __for_each_btree_node(_trans, _iter, _btree_id, _start, \ _locks_want, _depth, _flags, _b, _ret) \ for (bch2_trans_node_iter_init((_trans), &(_iter), (_btree_id), \ _start, _locks_want, _depth, _flags); \ - (_b) = __btree_iter_peek_node_and_restart((_trans), &(_iter)),\ + (_b) = bch2_btree_iter_peek_node_and_restart(&(_iter)), \ !((_ret) = PTR_ERR_OR_ZERO(_b)) && (_b); \ (_b) = bch2_btree_iter_next_node(&(_iter))) @@ -305,20 +545,48 @@ static inline int bkey_err(struct bkey_s_c k) return PTR_ERR_OR_ZERO(k.k); } +static inline struct bkey_s_c bch2_btree_iter_peek_prev_type(struct btree_iter *iter, + unsigned flags) +{ + BUG_ON(flags & BTREE_ITER_ALL_LEVELS); + + return flags & BTREE_ITER_SLOTS ? bch2_btree_iter_peek_slot(iter) : + bch2_btree_iter_peek_prev(iter); +} + static inline struct bkey_s_c bch2_btree_iter_peek_type(struct btree_iter *iter, - unsigned flags) + unsigned flags) { - return flags & BTREE_ITER_SLOTS - ? bch2_btree_iter_peek_slot(iter) - : bch2_btree_iter_peek(iter); + return flags & BTREE_ITER_ALL_LEVELS ? bch2_btree_iter_peek_all_levels(iter) : + flags & BTREE_ITER_SLOTS ? bch2_btree_iter_peek_slot(iter) : + bch2_btree_iter_peek(iter); +} + +static inline struct bkey_s_c bch2_btree_iter_peek_upto_type(struct btree_iter *iter, + struct bpos end, + unsigned flags) +{ + if (!(flags & BTREE_ITER_SLOTS)) + return bch2_btree_iter_peek_upto(iter, end); + + if (bkey_gt(iter->pos, end)) + return bkey_s_c_null; + + return bch2_btree_iter_peek_slot(iter); } static inline int btree_trans_too_many_iters(struct btree_trans *trans) { - return hweight64(trans->paths_allocated) > BTREE_ITER_MAX / 2 - ? -EINTR : 0; + if (hweight64(trans->paths_allocated) > BTREE_ITER_MAX - 8) { + trace_and_count(trans->c, trans_restart_too_many_iters, trans, _THIS_IP_); + return btree_trans_restart(trans, BCH_ERR_transaction_restart_too_many_iters); + } + + return 0; } +struct bkey_s_c bch2_btree_iter_peek_and_restart_outlined(struct btree_iter *); + static inline struct bkey_s_c __bch2_btree_iter_peek_and_restart(struct btree_trans *trans, struct btree_iter *iter, unsigned flags) @@ -327,12 +595,178 @@ __bch2_btree_iter_peek_and_restart(struct btree_trans *trans, while (btree_trans_too_many_iters(trans) || (k = bch2_btree_iter_peek_type(iter, flags), - bkey_err(k) == -EINTR)) + bch2_err_matches(bkey_err(k), BCH_ERR_transaction_restart))) bch2_trans_begin(trans); return k; } +static inline struct bkey_s_c +__bch2_btree_iter_peek_upto_and_restart(struct btree_trans *trans, + struct btree_iter *iter, + struct bpos end, + unsigned flags) +{ + struct bkey_s_c k; + + while (btree_trans_too_many_iters(trans) || + (k = bch2_btree_iter_peek_upto_type(iter, end, flags), + bch2_err_matches(bkey_err(k), BCH_ERR_transaction_restart))) + bch2_trans_begin(trans); + + return k; +} + +#define lockrestart_do(_trans, _do) \ +({ \ + u32 _restart_count; \ + int _ret; \ + \ + do { \ + _restart_count = bch2_trans_begin(_trans); \ + _ret = (_do); \ + } while (bch2_err_matches(_ret, BCH_ERR_transaction_restart)); \ + \ + if (!_ret) \ + bch2_trans_verify_not_restarted(_trans, _restart_count);\ + \ + _ret; \ +}) + +/* + * nested_lockrestart_do(), nested_commit_do(): + * + * These are like lockrestart_do() and commit_do(), with two differences: + * + * - We don't call bch2_trans_begin() unless we had a transaction restart + * - We return -BCH_ERR_transaction_restart_nested if we succeeded after a + * transaction restart + */ +#define nested_lockrestart_do(_trans, _do) \ +({ \ + u32 _restart_count, _orig_restart_count; \ + int _ret; \ + \ + _restart_count = _orig_restart_count = (_trans)->restart_count; \ + \ + while (bch2_err_matches(_ret = (_do), BCH_ERR_transaction_restart))\ + _restart_count = bch2_trans_begin(_trans); \ + \ + if (!_ret) \ + bch2_trans_verify_not_restarted(_trans, _restart_count);\ + \ + if (!_ret && trans_was_restarted(_trans, _orig_restart_count)) \ + _ret = -BCH_ERR_transaction_restart_nested; \ + \ + _ret; \ +}) + +#define for_each_btree_key2(_trans, _iter, _btree_id, \ + _start, _flags, _k, _do) \ +({ \ + int _ret = 0; \ + \ + bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ + (_start), (_flags)); \ + \ + while (1) { \ + u32 _restart_count = bch2_trans_begin(_trans); \ + \ + _ret = 0; \ + (_k) = bch2_btree_iter_peek_type(&(_iter), (_flags)); \ + if (!(_k).k) \ + break; \ + \ + _ret = bkey_err(_k) ?: (_do); \ + if (bch2_err_matches(_ret, BCH_ERR_transaction_restart))\ + continue; \ + if (_ret) \ + break; \ + bch2_trans_verify_not_restarted(_trans, _restart_count);\ + if (!bch2_btree_iter_advance(&(_iter))) \ + break; \ + } \ + \ + bch2_trans_iter_exit((_trans), &(_iter)); \ + _ret; \ +}) + +#define for_each_btree_key2_upto(_trans, _iter, _btree_id, \ + _start, _end, _flags, _k, _do) \ +({ \ + int _ret = 0; \ + \ + bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ + (_start), (_flags)); \ + \ + while (1) { \ + u32 _restart_count = bch2_trans_begin(_trans); \ + \ + _ret = 0; \ + (_k) = bch2_btree_iter_peek_upto_type(&(_iter), _end, (_flags));\ + if (!(_k).k) \ + break; \ + \ + _ret = bkey_err(_k) ?: (_do); \ + if (bch2_err_matches(_ret, BCH_ERR_transaction_restart))\ + continue; \ + if (_ret) \ + break; \ + bch2_trans_verify_not_restarted(_trans, _restart_count);\ + if (!bch2_btree_iter_advance(&(_iter))) \ + break; \ + } \ + \ + bch2_trans_iter_exit((_trans), &(_iter)); \ + _ret; \ +}) + +#define for_each_btree_key_reverse(_trans, _iter, _btree_id, \ + _start, _flags, _k, _do) \ +({ \ + int _ret = 0; \ + \ + bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ + (_start), (_flags)); \ + \ + while (1) { \ + u32 _restart_count = bch2_trans_begin(_trans); \ + (_k) = bch2_btree_iter_peek_prev_type(&(_iter), (_flags));\ + if (!(_k).k) { \ + _ret = 0; \ + break; \ + } \ + \ + _ret = bkey_err(_k) ?: (_do); \ + if (bch2_err_matches(_ret, BCH_ERR_transaction_restart))\ + continue; \ + if (_ret) \ + break; \ + bch2_trans_verify_not_restarted(_trans, _restart_count);\ + if (!bch2_btree_iter_rewind(&(_iter))) \ + break; \ + } \ + \ + bch2_trans_iter_exit((_trans), &(_iter)); \ + _ret; \ +}) + +#define for_each_btree_key_commit(_trans, _iter, _btree_id, \ + _start, _iter_flags, _k, \ + _disk_res, _journal_seq, _commit_flags,\ + _do) \ + for_each_btree_key2(_trans, _iter, _btree_id, _start, _iter_flags, _k,\ + (_do) ?: bch2_trans_commit(_trans, (_disk_res),\ + (_journal_seq), (_commit_flags))) + +#define for_each_btree_key_upto_commit(_trans, _iter, _btree_id, \ + _start, _end, _iter_flags, _k, \ + _disk_res, _journal_seq, _commit_flags,\ + _do) \ + for_each_btree_key2_upto(_trans, _iter, _btree_id, _start, _end, _iter_flags, _k,\ + (_do) ?: bch2_trans_commit(_trans, (_disk_res),\ + (_journal_seq), (_commit_flags))) + #define for_each_btree_key(_trans, _iter, _btree_id, \ _start, _flags, _k, _ret) \ for (bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ @@ -341,6 +775,15 @@ __bch2_btree_iter_peek_and_restart(struct btree_trans *trans, !((_ret) = bkey_err(_k)) && (_k).k; \ bch2_btree_iter_advance(&(_iter))) +#define for_each_btree_key_upto(_trans, _iter, _btree_id, \ + _start, _end, _flags, _k, _ret) \ + for (bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ + (_start), (_flags)); \ + (_k) = __bch2_btree_iter_peek_upto_and_restart((_trans), \ + &(_iter), _end, _flags),\ + !((_ret) = bkey_err(_k)) && (_k).k; \ + bch2_btree_iter_advance(&(_iter))) + #define for_each_btree_key_norestart(_trans, _iter, _btree_id, \ _start, _flags, _k, _ret) \ for (bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ @@ -349,6 +792,14 @@ __bch2_btree_iter_peek_and_restart(struct btree_trans *trans, !((_ret) = bkey_err(_k)) && (_k).k; \ bch2_btree_iter_advance(&(_iter))) +#define for_each_btree_key_upto_norestart(_trans, _iter, _btree_id, \ + _start, _end, _flags, _k, _ret) \ + for (bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \ + (_start), (_flags)); \ + (_k) = bch2_btree_iter_peek_upto_type(&(_iter), _end, _flags),\ + !((_ret) = bkey_err(_k)) && (_k).k; \ + bch2_btree_iter_advance(&(_iter))) + #define for_each_btree_key_continue(_trans, _iter, _flags, _k, _ret) \ for (; \ (_k) = __bch2_btree_iter_peek_and_restart((_trans), &(_iter), _flags),\ @@ -361,16 +812,36 @@ __bch2_btree_iter_peek_and_restart(struct btree_trans *trans, !((_ret) = bkey_err(_k)) && (_k).k; \ bch2_btree_iter_advance(&(_iter))) +#define for_each_btree_key_upto_continue_norestart(_iter, _end, _flags, _k, _ret)\ + for (; \ + (_k) = bch2_btree_iter_peek_upto_type(&(_iter), _end, _flags), \ + !((_ret) = bkey_err(_k)) && (_k).k; \ + bch2_btree_iter_advance(&(_iter))) + /* new multiple iterator interface: */ +void bch2_trans_updates_to_text(struct printbuf *, struct btree_trans *); +void bch2_btree_path_to_text(struct printbuf *, struct btree_path *); +void bch2_trans_paths_to_text(struct printbuf *, struct btree_trans *); +void bch2_dump_trans_updates(struct btree_trans *); void bch2_dump_trans_paths_updates(struct btree_trans *); -void __bch2_trans_init(struct btree_trans *, struct bch_fs *, - unsigned, size_t, const char *); +void __bch2_trans_init(struct btree_trans *, struct bch_fs *, unsigned); void bch2_trans_exit(struct btree_trans *); -#define bch2_trans_init(...) __bch2_trans_init(__VA_ARGS__, __func__) +extern const char *bch2_btree_transaction_fns[BCH_TRANSACTIONS_NR]; +unsigned bch2_trans_get_fn_idx(const char *); + +#define bch2_trans_init(_trans, _c, _nr_iters, _mem) \ +do { \ + static unsigned trans_fn_idx; \ + \ + if (unlikely(!trans_fn_idx)) \ + trans_fn_idx = bch2_trans_get_fn_idx(__func__); \ + \ + __bch2_trans_init(_trans, _c, trans_fn_idx); \ +} while (0) -void bch2_btree_trans_to_text(struct printbuf *, struct bch_fs *); +void bch2_btree_trans_to_text(struct printbuf *, struct btree_trans *); void bch2_fs_btree_iter_exit(struct bch_fs *); int bch2_fs_btree_iter_init(struct bch_fs *); |