diff options
48 files changed, 1010 insertions, 901 deletions
diff --git a/.bcachefs_revision b/.bcachefs_revision index 90fe0441..2e94466b 100644 --- a/.bcachefs_revision +++ b/.bcachefs_revision @@ -1 +1 @@ -e1f6739c4a9fee1db7d94a5087a253041542cb62 +c9b4a210f946889f56654dda24dd8ced3b1aac24 diff --git a/libbcachefs/alloc_background.c b/libbcachefs/alloc_background.c index c3794518..9d9615aa 100644 --- a/libbcachefs/alloc_background.c +++ b/libbcachefs/alloc_background.c @@ -208,29 +208,25 @@ void bch2_alloc_to_text(struct printbuf *out, struct bch_fs *c, get_alloc_field(a.v, &d, i)); } -int bch2_alloc_read(struct bch_fs *c, struct journal_keys *journal_keys) +static int bch2_alloc_read_fn(struct bch_fs *c, enum btree_id id, + unsigned level, struct bkey_s_c k) { - struct btree_trans trans; - struct btree_and_journal_iter iter; - struct bkey_s_c k; - struct bch_dev *ca; - unsigned i; - int ret = 0; - - bch2_trans_init(&trans, c, 0, 0); - - bch2_btree_and_journal_iter_init(&iter, &trans, journal_keys, - BTREE_ID_ALLOC, POS_MIN); - - while ((k = bch2_btree_and_journal_iter_peek(&iter)).k) { + if (!level) bch2_mark_key(c, k, 0, 0, NULL, 0, BTREE_TRIGGER_ALLOC_READ| BTREE_TRIGGER_NOATOMIC); - bch2_btree_and_journal_iter_advance(&iter); - } + return 0; +} + +int bch2_alloc_read(struct bch_fs *c, struct journal_keys *journal_keys) +{ + struct bch_dev *ca; + unsigned i; + int ret = 0; - ret = bch2_trans_exit(&trans) ?: ret; + ret = bch2_btree_and_journal_walk(c, journal_keys, BTREE_ID_ALLOC, + NULL, bch2_alloc_read_fn); if (ret) { bch_err(c, "error reading alloc info: %i", ret); return ret; @@ -847,7 +843,7 @@ static int bch2_invalidate_one_bucket2(struct btree_trans *trans, struct bkey_s_c k; bool invalidating_cached_data; size_t b; - int ret; + int ret = 0; BUG_ON(!ca->alloc_heap.used || !ca->alloc_heap.data[0].nr); @@ -861,11 +857,27 @@ static int bch2_invalidate_one_bucket2(struct btree_trans *trans, BUG_ON(!fifo_push(&ca->free_inc, b)); + g = bucket(ca, b); + m = READ_ONCE(g->mark); + bch2_mark_alloc_bucket(c, ca, b, true, gc_pos_alloc(c, NULL), 0); spin_unlock(&c->freelist_lock); percpu_up_read(&c->mark_lock); + invalidating_cached_data = m.cached_sectors != 0; + if (!invalidating_cached_data) + goto out; + + /* + * If the read-only path is trying to shut down, we can't be generating + * new btree updates: + */ + if (test_bit(BCH_FS_ALLOCATOR_STOPPING, &c->flags)) { + ret = 1; + goto out; + } + BUG_ON(BKEY_ALLOC_VAL_U64s_MAX > 8); bch2_btree_iter_set_pos(iter, POS(ca->dev_idx, b)); @@ -919,7 +931,7 @@ retry: flags); if (ret == -EINTR) goto retry; - +out: if (!ret) { /* remove from alloc_heap: */ struct alloc_heap_entry e, *top = ca->alloc_heap.data; @@ -953,7 +965,7 @@ retry: percpu_up_read(&c->mark_lock); } - return ret; + return ret < 0 ? ret : 0; } static bool bch2_invalidate_one_bucket(struct bch_fs *c, struct bch_dev *ca, @@ -1465,11 +1477,6 @@ again: } rcu_read_unlock(); - if (c->btree_roots_dirty) { - bch2_journal_meta(&c->journal); - goto again; - } - return !nodes_unwritten && !bch2_btree_interior_updates_nr_pending(c); } diff --git a/libbcachefs/bcachefs.h b/libbcachefs/bcachefs.h index fa959376..72d8ef77 100644 --- a/libbcachefs/bcachefs.h +++ b/libbcachefs/bcachefs.h @@ -477,8 +477,10 @@ struct bch_dev { enum { /* startup: */ BCH_FS_ALLOC_READ_DONE, + BCH_FS_ALLOC_CLEAN, BCH_FS_ALLOCATOR_STARTED, BCH_FS_ALLOCATOR_RUNNING, + BCH_FS_ALLOCATOR_STOPPING, BCH_FS_INITIAL_GC_DONE, BCH_FS_FSCK_DONE, BCH_FS_STARTED, @@ -600,13 +602,10 @@ struct bch_fs { struct bio_set btree_bio; struct btree_root btree_roots[BTREE_ID_NR]; - bool btree_roots_dirty; struct mutex btree_root_lock; struct btree_cache btree_cache; - mempool_t btree_reserve_pool; - /* * Cache of allocated btree nodes - if we allocate a btree node and * don't use it, if we free it that space can't be reused until going @@ -624,6 +623,12 @@ struct bch_fs { struct mutex btree_interior_update_lock; struct closure_waitlist btree_interior_update_wait; + struct workqueue_struct *btree_interior_update_worker; + struct work_struct btree_interior_update_work; + + /* btree_iter.c: */ + struct mutex btree_trans_lock; + struct list_head btree_trans_list; mempool_t btree_iters_pool; struct workqueue_struct *wq; diff --git a/libbcachefs/bcachefs_format.h b/libbcachefs/bcachefs_format.h index 616863ef..f808e63a 100644 --- a/libbcachefs/bcachefs_format.h +++ b/libbcachefs/bcachefs_format.h @@ -1262,6 +1262,8 @@ LE64_BITMASK(BCH_SB_PRJQUOTA, struct bch_sb, flags[0], 59, 60); LE64_BITMASK(BCH_SB_HAS_ERRORS, struct bch_sb, flags[0], 60, 61); +LE64_BITMASK(BCH_SB_REFLINK, struct bch_sb, flags[0], 61, 62); + /* 61-64 unused */ LE64_BITMASK(BCH_SB_STR_HASH_TYPE, struct bch_sb, flags[1], 0, 4); diff --git a/libbcachefs/bkey_methods.c b/libbcachefs/bkey_methods.c index 55ef4032..36e0c515 100644 --- a/libbcachefs/bkey_methods.c +++ b/libbcachefs/bkey_methods.c @@ -176,13 +176,17 @@ void bch2_bpos_to_text(struct printbuf *out, struct bpos pos) void bch2_bkey_to_text(struct printbuf *out, const struct bkey *k) { - pr_buf(out, "u64s %u type %s ", k->u64s, - bch2_bkey_types[k->type]); + if (k) { + pr_buf(out, "u64s %u type %s ", k->u64s, + bch2_bkey_types[k->type]); - bch2_bpos_to_text(out, k->p); + bch2_bpos_to_text(out, k->p); - pr_buf(out, " snap %u len %u ver %llu", - k->p.snapshot, k->size, k->version.lo); + pr_buf(out, " snap %u len %u ver %llu", + k->p.snapshot, k->size, k->version.lo); + } else { + pr_buf(out, "(null)"); + } } void bch2_val_to_text(struct printbuf *out, struct bch_fs *c, @@ -198,8 +202,11 @@ void bch2_bkey_val_to_text(struct printbuf *out, struct bch_fs *c, struct bkey_s_c k) { bch2_bkey_to_text(out, k.k); - pr_buf(out, ": "); - bch2_val_to_text(out, c, k); + + if (k.k) { + pr_buf(out, ": "); + bch2_val_to_text(out, c, k); + } } void bch2_bkey_swab_val(struct bkey_s k) diff --git a/libbcachefs/btree_cache.c b/libbcachefs/btree_cache.c index c12f8a6b..fc69f685 100644 --- a/libbcachefs/btree_cache.c +++ b/libbcachefs/btree_cache.c @@ -553,7 +553,6 @@ out_unlock: list_del_init(&b->list); mutex_unlock(&bc->lock); - memalloc_nofs_restore(flags); out: b->flags = 0; b->written = 0; @@ -566,6 +565,7 @@ out: bch2_time_stats_update(&c->times[BCH_TIME_btree_node_mem_alloc], start_time); + memalloc_nofs_restore(flags); return b; err: /* Try to cannibalize another cached btree node: */ @@ -581,6 +581,7 @@ err: } mutex_unlock(&bc->lock); + memalloc_nofs_restore(flags); return ERR_PTR(-ENOMEM); } @@ -849,6 +850,18 @@ struct btree *bch2_btree_node_get_sibling(struct bch_fs *c, if (!parent) return NULL; + /* + * There's a corner case where a btree_iter might have a node locked + * that is just outside its current pos - when + * bch2_btree_iter_set_pos_same_leaf() gets to the end of the node. + * + * But the lock ordering checks in __bch2_btree_node_lock() go off of + * iter->pos, not the node's key: so if the iterator is marked as + * needing to be traversed, we risk deadlock if we don't bail out here: + */ + if (iter->uptodate >= BTREE_ITER_NEED_TRAVERSE) + return ERR_PTR(-EINTR); + if (!bch2_btree_node_relock(iter, level + 1)) { ret = ERR_PTR(-EINTR); goto out; diff --git a/libbcachefs/btree_gc.c b/libbcachefs/btree_gc.c index 146f2428..65b01e86 100644 --- a/libbcachefs/btree_gc.c +++ b/libbcachefs/btree_gc.c @@ -464,6 +464,7 @@ static void bch2_mark_superblocks(struct bch_fs *c) mutex_unlock(&c->sb_lock); } +#if 0 /* Also see bch2_pending_btree_node_free_insert_done() */ static void bch2_mark_pending_btree_node_frees(struct bch_fs *c) { @@ -481,6 +482,7 @@ static void bch2_mark_pending_btree_node_frees(struct bch_fs *c) mutex_unlock(&c->btree_interior_update_lock); } +#endif static void bch2_mark_allocator_buckets(struct bch_fs *c) { @@ -579,8 +581,10 @@ static int bch2_gc_done(struct bch_fs *c, #define copy_bucket_field(_f) \ if (dst->b[b].mark._f != src->b[b].mark._f) { \ if (verify) \ - fsck_err(c, "dev %u bucket %zu has wrong " #_f \ + fsck_err(c, "bucket %u:%zu gen %u data type %s has wrong " #_f \ ": got %u, should be %u", i, b, \ + dst->b[b].mark.gen, \ + bch2_data_types[dst->b[b].mark.data_type],\ dst->b[b].mark._f, src->b[b].mark._f); \ dst->b[b]._mark._f = src->b[b].mark._f; \ } @@ -797,6 +801,10 @@ int bch2_gc(struct bch_fs *c, struct journal_keys *journal_keys, trace_gc_start(c); down_write(&c->gc_lock); + + /* flush interior btree updates: */ + closure_wait_event(&c->btree_interior_update_wait, + !bch2_btree_interior_updates_nr_pending(c)); again: ret = bch2_gc_start(c, metadata_only); if (ret) @@ -808,7 +816,9 @@ again: if (ret) goto out; +#if 0 bch2_mark_pending_btree_node_frees(c); +#endif bch2_mark_allocator_buckets(c); c->gc_count++; @@ -1033,6 +1043,8 @@ static void bch2_coalesce_nodes(struct bch_fs *c, struct btree_iter *iter, btree_node_reset_sib_u64s(n); bch2_btree_build_aux_trees(n); + + bch2_btree_update_add_new_node(as, n); six_unlock_write(&n->lock); bch2_btree_node_write(c, n, SIX_LOCK_intent); @@ -1081,7 +1093,7 @@ next: bch2_btree_iter_node_replace(iter, new_nodes[0]); for (i = 0; i < nr_new_nodes; i++) - bch2_open_buckets_put(c, &new_nodes[i]->ob); + bch2_btree_update_get_open_buckets(as, new_nodes[i]); /* Free the old nodes and update our sliding window */ for (i = 0; i < nr_old_nodes; i++) { diff --git a/libbcachefs/btree_io.c b/libbcachefs/btree_io.c index 63063748..6a42ce25 100644 --- a/libbcachefs/btree_io.c +++ b/libbcachefs/btree_io.c @@ -631,14 +631,14 @@ static void btree_err_msg(struct printbuf *out, struct bch_fs *c, struct btree *b, struct bset *i, unsigned offset, int write) { - pr_buf(out, "error validating btree node %s" - "at btree %u level %u/%u\n" - "pos %llu:%llu node offset %u", + pr_buf(out, "error validating btree node %sat btree %u level %u/%u\n" + "pos ", write ? "before write " : "", b->btree_id, b->level, - c->btree_roots[b->btree_id].level, - b->key.k.p.inode, b->key.k.p.offset, - b->written); + c->btree_roots[b->btree_id].level); + bch2_bkey_val_to_text(out, c, bkey_i_to_s_c(&b->key)); + + pr_buf(out, " node offset %u", b->written); if (i) pr_buf(out, " bset u64s %u", le16_to_cpu(i->u64s)); } @@ -944,7 +944,8 @@ int bch2_btree_node_read_done(struct bch_fs *c, struct btree *b, bool have_retry btree_err_on(b->data->keys.seq != bp->seq, BTREE_ERR_MUST_RETRY, c, b, NULL, - "got wrong btree node"); + "got wrong btree node (seq %llx want %llx)", + b->data->keys.seq, bp->seq); } while (b->written < c->opts.btree_node_size) { diff --git a/libbcachefs/btree_iter.c b/libbcachefs/btree_iter.c index 5528ba0f..6abcbe3d 100644 --- a/libbcachefs/btree_iter.c +++ b/libbcachefs/btree_iter.c @@ -205,8 +205,9 @@ bool __bch2_btree_node_lock(struct btree *b, struct bpos pos, if (!linked->nodes_locked) continue; - /* * Must lock btree nodes in key order: */ - if (__btree_iter_cmp(iter->btree_id, pos, linked) < 0) + /* Must lock btree nodes in key order: */ + if ((cmp_int(iter->btree_id, linked->btree_id) ?: + bkey_cmp(pos, linked->pos)) < 0) ret = false; /* @@ -1320,6 +1321,16 @@ void bch2_btree_iter_set_pos_same_leaf(struct btree_iter *iter, struct bpos new_ btree_iter_advance_to_pos(iter, l, -1); + /* + * XXX: + * keeping a node locked that's outside (even just outside) iter->pos + * breaks __bch2_btree_node_lock(). This seems to only affect + * bch2_btree_node_get_sibling so for now it's fixed there, but we + * should try to get rid of this corner case. + * + * (this behaviour is currently needed for BTREE_INSERT_NOUNLOCK) + */ + if (bch2_btree_node_iter_end(&l->iter) && btree_iter_pos_after_node(iter, l->b)) btree_iter_set_dirty(iter, BTREE_ITER_NEED_TRAVERSE); @@ -1912,7 +1923,7 @@ static struct btree_iter *btree_trans_iter_alloc(struct btree_trans *trans) struct btree_iter *iter; trans_for_each_iter(trans, iter) { - pr_err("iter: btree %s pos %llu:%llu%s%s%s %pf", + pr_err("iter: btree %s pos %llu:%llu%s%s%s %ps", bch2_btree_ids[iter->btree_id], iter->pos.inode, iter->pos.offset, @@ -2153,6 +2164,9 @@ void bch2_trans_reset(struct btree_trans *trans, unsigned flags) trans->nr_updates2 = 0; trans->mem_top = 0; + trans->extra_journal_entries = NULL; + trans->extra_journal_entry_u64s = 0; + if (trans->fs_usage_deltas) { trans->fs_usage_deltas->used = 0; memset(&trans->fs_usage_deltas->memset_start, 0, @@ -2189,12 +2203,25 @@ void bch2_trans_init(struct btree_trans *trans, struct bch_fs *c, if (expected_mem_bytes) bch2_trans_preload_mem(trans, expected_mem_bytes); + +#ifdef CONFIG_BCACHEFS_DEBUG + trans->pid = current->pid; + mutex_lock(&c->btree_trans_lock); + list_add(&trans->list, &c->btree_trans_list); + mutex_unlock(&c->btree_trans_lock); +#endif } int bch2_trans_exit(struct btree_trans *trans) { bch2_trans_unlock(trans); +#ifdef CONFIG_BCACHEFS_DEBUG + mutex_lock(&trans->c->btree_trans_lock); + list_del(&trans->list); + mutex_unlock(&trans->c->btree_trans_lock); +#endif + kfree(trans->fs_usage_deltas); kfree(trans->mem); if (trans->used_mempool) @@ -2207,6 +2234,51 @@ int bch2_trans_exit(struct btree_trans *trans) return trans->error ? -EIO : 0; } +void bch2_btree_trans_to_text(struct printbuf *out, struct bch_fs *c) +{ +#ifdef CONFIG_BCACHEFS_DEBUG + struct btree_trans *trans; + struct btree_iter *iter; + struct btree *b; + unsigned l; + + mutex_lock(&c->btree_trans_lock); + list_for_each_entry(trans, &c->btree_trans_list, list) { + pr_buf(out, "%i %ps\n", trans->pid, (void *) trans->ip); + + trans_for_each_iter(trans, iter) { + if (!iter->nodes_locked) + continue; + + pr_buf(out, " iter %s:", bch2_btree_ids[iter->btree_id]); + bch2_bpos_to_text(out, iter->pos); + pr_buf(out, "\n"); + + for (l = 0; l < BTREE_MAX_DEPTH; l++) { + if (btree_node_locked(iter, l)) { + b = iter->l[l].b; + + pr_buf(out, " %p l=%u %s ", + b, l, btree_node_intent_locked(iter, l) ? "i" : "r"); + bch2_bpos_to_text(out, b->key.k.p); + pr_buf(out, "\n"); + } + } + } + + b = READ_ONCE(trans->locking); + if (b) { + pr_buf(out, " locking %px l=%u %s:", + b, b->level, + bch2_btree_ids[b->btree_id]); + bch2_bpos_to_text(out, b->key.k.p); + pr_buf(out, "\n"); + } + } + mutex_unlock(&c->btree_trans_lock); +#endif +} + void bch2_fs_btree_iter_exit(struct bch_fs *c) { mempool_exit(&c->btree_iters_pool); @@ -2216,6 +2288,9 @@ int bch2_fs_btree_iter_init(struct bch_fs *c) { unsigned nr = BTREE_ITER_MAX; + INIT_LIST_HEAD(&c->btree_trans_list); + mutex_init(&c->btree_trans_lock); + return mempool_init_kmalloc_pool(&c->btree_iters_pool, 1, sizeof(struct btree_iter) * nr + sizeof(struct btree_insert_entry) * nr + diff --git a/libbcachefs/btree_iter.h b/libbcachefs/btree_iter.h index 6456787a..ab35fcd8 100644 --- a/libbcachefs/btree_iter.h +++ b/libbcachefs/btree_iter.h @@ -172,17 +172,10 @@ void bch2_btree_iter_set_pos_same_leaf(struct btree_iter *, struct bpos); void __bch2_btree_iter_set_pos(struct btree_iter *, struct bpos, bool); void bch2_btree_iter_set_pos(struct btree_iter *, struct bpos); -static inline int __btree_iter_cmp(enum btree_id id, - struct bpos pos, - const struct btree_iter *r) -{ - return cmp_int(id, r->btree_id) ?: bkey_cmp(pos, r->pos); -} - static inline int btree_iter_cmp(const struct btree_iter *l, const struct btree_iter *r) { - return __btree_iter_cmp(l->btree_id, l->pos, r); + return cmp_int(l->btree_id, r->btree_id) ?: bkey_cmp(l->pos, r->pos); } /* @@ -303,6 +296,8 @@ void *bch2_trans_kmalloc(struct btree_trans *, size_t); void bch2_trans_init(struct btree_trans *, struct bch_fs *, unsigned, size_t); int bch2_trans_exit(struct btree_trans *); +void bch2_btree_trans_to_text(struct printbuf *, struct bch_fs *); + void bch2_fs_btree_iter_exit(struct bch_fs *); int bch2_fs_btree_iter_init(struct bch_fs *); diff --git a/libbcachefs/btree_locking.h b/libbcachefs/btree_locking.h index 9081d3fc..7aa11c00 100644 --- a/libbcachefs/btree_locking.h +++ b/libbcachefs/btree_locking.h @@ -182,11 +182,21 @@ static inline bool btree_node_lock(struct btree *b, struct bpos pos, struct btree_iter *iter, enum six_lock_type type) { + bool ret; + EBUG_ON(level >= BTREE_MAX_DEPTH); +#ifdef CONFIG_BCACHEFS_DEBUG + iter->trans->locking = b; +#endif - return likely(six_trylock_type(&b->lock, type)) || + ret = likely(six_trylock_type(&b->lock, type)) || btree_node_lock_increment(iter, b, level, type) || __bch2_btree_node_lock(b, pos, level, iter, type); + +#ifdef CONFIG_BCACHEFS_DEBUG + iter->trans->locking = NULL; +#endif + return ret; } bool __bch2_btree_node_relock(struct btree_iter *, unsigned); diff --git a/libbcachefs/btree_types.h b/libbcachefs/btree_types.h index 732cdc35..e97248ca 100644 --- a/libbcachefs/btree_types.h +++ b/libbcachefs/btree_types.h @@ -281,6 +281,11 @@ struct btree_insert_entry { struct btree_trans { struct bch_fs *c; +#ifdef CONFIG_BCACHEFS_DEBUG + struct list_head list; + struct btree *locking; + pid_t pid; +#endif unsigned long ip; u64 iters_linked; @@ -305,6 +310,10 @@ struct btree_trans { struct btree_insert_entry *updates2; /* update path: */ + struct jset_entry *extra_journal_entries; + unsigned extra_journal_entry_u64s; + struct journal_entry_pin *journal_pin; + struct journal_res journal_res; struct journal_preres journal_preres; u64 *journal_seq; diff --git a/libbcachefs/btree_update_interior.c b/libbcachefs/btree_update_interior.c index 75b70187..455a7093 100644 --- a/libbcachefs/btree_update_interior.c +++ b/libbcachefs/btree_update_interior.c @@ -21,10 +21,6 @@ #include <linux/random.h> #include <trace/events/bcachefs.h> -static void btree_node_will_make_reachable(struct btree_update *, - struct btree *); -static void btree_update_drop_new_node(struct bch_fs *, struct btree *); - /* Debug code: */ /* @@ -124,74 +120,6 @@ bool bch2_btree_node_format_fits(struct bch_fs *c, struct btree *b, /* Btree node freeing/allocation: */ -static bool btree_key_matches(struct bch_fs *c, - struct bkey_s_c l, - struct bkey_s_c r) -{ - struct bkey_ptrs_c ptrs1 = bch2_bkey_ptrs_c(l); - struct bkey_ptrs_c ptrs2 = bch2_bkey_ptrs_c(r); - const struct bch_extent_ptr *ptr1, *ptr2; - - bkey_for_each_ptr(ptrs1, ptr1) - bkey_for_each_ptr(ptrs2, ptr2) - if (ptr1->dev == ptr2->dev && - ptr1->gen == ptr2->gen && - ptr1->offset == ptr2->offset) - return true; - - return false; -} - -/* - * We're doing the index update that makes @b unreachable, update stuff to - * reflect that: - * - * Must be called _before_ btree_update_updated_root() or - * btree_update_updated_node: - */ -static void bch2_btree_node_free_index(struct btree_update *as, struct btree *b, - struct bkey_s_c k, - struct bch_fs_usage *stats) -{ - struct bch_fs *c = as->c; - struct pending_btree_node_free *d; - - for (d = as->pending; d < as->pending + as->nr_pending; d++) - if (!bkey_cmp(k.k->p, d->key.k.p) && - btree_key_matches(c, k, bkey_i_to_s_c(&d->key))) - goto found; - BUG(); -found: - BUG_ON(d->index_update_done); - d->index_update_done = true; - - /* - * We're dropping @k from the btree, but it's still live until the - * index update is persistent so we need to keep a reference around for - * mark and sweep to find - that's primarily what the - * btree_node_pending_free list is for. - * - * So here (when we set index_update_done = true), we're moving an - * existing reference to a different part of the larger "gc keyspace" - - * and the new position comes after the old position, since GC marks - * the pending free list after it walks the btree. - * - * If we move the reference while mark and sweep is _between_ the old - * and the new position, mark and sweep will see the reference twice - * and it'll get double accounted - so check for that here and subtract - * to cancel out one of mark and sweep's markings if necessary: - */ - - if (gc_pos_cmp(c->gc_pos, b - ? gc_pos_btree_node(b) - : gc_pos_btree_root(as->btree_id)) >= 0 && - gc_pos_cmp(c->gc_pos, gc_phase(GC_PHASE_PENDING_DELETE)) < 0) - bch2_mark_key_locked(c, bkey_i_to_s_c(&d->key), - 0, 0, NULL, 0, - BTREE_TRIGGER_OVERWRITE| - BTREE_TRIGGER_GC); -} - static void __btree_node_free(struct bch_fs *c, struct btree *b) { trace_btree_node_free(c, b); @@ -216,8 +144,6 @@ void bch2_btree_node_free_never_inserted(struct bch_fs *c, struct btree *b) { struct open_buckets ob = b->ob; - btree_update_drop_new_node(c, b); - b->ob.nr = 0; clear_btree_node_dirty(b); @@ -237,39 +163,12 @@ void bch2_btree_node_free_inmem(struct bch_fs *c, struct btree *b, trans_for_each_iter(iter->trans, linked) BUG_ON(linked->l[b->level].b == b); - /* - * Is this a node that isn't reachable on disk yet? - * - * Nodes that aren't reachable yet have writes blocked until they're - * reachable - now that we've cancelled any pending writes and moved - * things waiting on that write to wait on this update, we can drop this - * node from the list of nodes that the other update is making - * reachable, prior to freeing it: - */ - btree_update_drop_new_node(c, b); - six_lock_write(&b->lock); __btree_node_free(c, b); six_unlock_write(&b->lock); six_unlock_intent(&b->lock); } -static void bch2_btree_node_free_ondisk(struct bch_fs *c, - struct pending_btree_node_free *pending, - u64 journal_seq) -{ - BUG_ON(!pending->index_update_done); - - bch2_mark_key(c, bkey_i_to_s_c(&pending->key), - 0, 0, NULL, journal_seq, BTREE_TRIGGER_OVERWRITE); - - if (gc_visited(c, gc_phase(GC_PHASE_PENDING_DELETE))) - bch2_mark_key(c, bkey_i_to_s_c(&pending->key), - 0, 0, NULL, journal_seq, - BTREE_TRIGGER_OVERWRITE| - BTREE_TRIGGER_GC); -} - static struct btree *__bch2_btree_node_alloc(struct bch_fs *c, struct disk_reservation *res, struct closure *cl, @@ -357,9 +256,9 @@ static struct btree *bch2_btree_node_alloc(struct btree_update *as, unsigned lev int ret; BUG_ON(level >= BTREE_MAX_DEPTH); - BUG_ON(!as->reserve->nr); + BUG_ON(!as->nr_prealloc_nodes); - b = as->reserve->b[--as->reserve->nr]; + b = as->prealloc_nodes[--as->nr_prealloc_nodes]; set_btree_node_accessed(b); set_btree_node_dirty(b); @@ -394,8 +293,6 @@ static struct btree *bch2_btree_node_alloc(struct btree_update *as, unsigned lev bch2_btree_build_aux_trees(b); - btree_node_will_make_reachable(as, b); - ret = bch2_btree_node_hash_insert(&c->btree_cache, b, level, as->btree_id); BUG_ON(ret); @@ -466,19 +363,20 @@ static struct btree *__btree_root_alloc(struct btree_update *as, unsigned level) btree_node_set_format(b, b->data->format); bch2_btree_build_aux_trees(b); + bch2_btree_update_add_new_node(as, b); six_unlock_write(&b->lock); return b; } -static void bch2_btree_reserve_put(struct bch_fs *c, struct btree_reserve *reserve) +static void bch2_btree_reserve_put(struct btree_update *as) { - bch2_disk_reservation_put(c, &reserve->disk_res); + struct bch_fs *c = as->c; mutex_lock(&c->btree_reserve_cache_lock); - while (reserve->nr) { - struct btree *b = reserve->b[--reserve->nr]; + while (as->nr_prealloc_nodes) { + struct btree *b = as->prealloc_nodes[--as->nr_prealloc_nodes]; six_unlock_write(&b->lock); @@ -502,36 +400,14 @@ static void bch2_btree_reserve_put(struct bch_fs *c, struct btree_reserve *reser } mutex_unlock(&c->btree_reserve_cache_lock); - - mempool_free(reserve, &c->btree_reserve_pool); } -static struct btree_reserve *bch2_btree_reserve_get(struct bch_fs *c, - unsigned nr_nodes, - unsigned flags, - struct closure *cl) +static int bch2_btree_reserve_get(struct btree_update *as, unsigned nr_nodes, + unsigned flags, struct closure *cl) { - struct btree_reserve *reserve; + struct bch_fs *c = as->c; struct btree *b; - struct disk_reservation disk_res = { 0, 0 }; - unsigned sectors = nr_nodes * c->opts.btree_node_size; - int ret, disk_res_flags = 0; - - if (flags & BTREE_INSERT_NOFAIL) - disk_res_flags |= BCH_DISK_RESERVATION_NOFAIL; - - /* - * This check isn't necessary for correctness - it's just to potentially - * prevent us from doing a lot of work that'll end up being wasted: - */ - ret = bch2_journal_error(&c->journal); - if (ret) - return ERR_PTR(ret); - - if (bch2_disk_reservation_get(c, &disk_res, sectors, - c->opts.metadata_replicas, - disk_res_flags)) - return ERR_PTR(-ENOSPC); + int ret; BUG_ON(nr_nodes > BTREE_RESERVE_MAX); @@ -540,18 +416,11 @@ static struct btree_reserve *bch2_btree_reserve_get(struct bch_fs *c, * open bucket reserve: */ ret = bch2_btree_cache_cannibalize_lock(c, cl); - if (ret) { - bch2_disk_reservation_put(c, &disk_res); - return ERR_PTR(ret); - } - - reserve = mempool_alloc(&c->btree_reserve_pool, GFP_NOIO); - - reserve->disk_res = disk_res; - reserve->nr = 0; + if (ret) + return ret; - while (reserve->nr < nr_nodes) { - b = __bch2_btree_node_alloc(c, &disk_res, + while (as->nr_prealloc_nodes < nr_nodes) { + b = __bch2_btree_node_alloc(c, &as->disk_res, flags & BTREE_INSERT_NOWAIT ? NULL : cl, flags); if (IS_ERR(b)) { @@ -563,21 +432,20 @@ static struct btree_reserve *bch2_btree_reserve_get(struct bch_fs *c, if (ret) goto err_free; - reserve->b[reserve->nr++] = b; + as->prealloc_nodes[as->nr_prealloc_nodes++] = b; } bch2_btree_cache_cannibalize_unlock(c); - return reserve; + return 0; err_free: - bch2_btree_reserve_put(c, reserve); bch2_btree_cache_cannibalize_unlock(c); trace_btree_reserve_get_fail(c, nr_nodes, cl); - return ERR_PTR(ret); + return ret; } /* Asynchronous interior node update machinery */ -static void __bch2_btree_update_free(struct btree_update *as) +static void bch2_btree_update_free(struct btree_update *as) { struct bch_fs *c = as->c; @@ -585,14 +453,13 @@ static void __bch2_btree_update_free(struct btree_update *as) bch2_journal_pin_drop(&c->journal, &as->journal); bch2_journal_pin_flush(&c->journal, &as->journal); + bch2_disk_reservation_put(c, &as->disk_res); + bch2_btree_reserve_put(as); - BUG_ON(as->nr_new_nodes || as->nr_pending); - - if (as->reserve) - bch2_btree_reserve_put(c, as->reserve); - + mutex_lock(&c->btree_interior_update_lock); list_del(&as->unwritten_list); list_del(&as->list); + mutex_unlock(&c->btree_interior_update_lock); closure_debug_destroy(&as->cl); mempool_free(as, &c->btree_interior_update_pool); @@ -600,37 +467,59 @@ static void __bch2_btree_update_free(struct btree_update *as) closure_wake_up(&c->btree_interior_update_wait); } -static void bch2_btree_update_free(struct btree_update *as) +static void btree_update_will_delete_key(struct btree_update *as, + struct bkey_i *k) { - struct bch_fs *c = as->c; + BUG_ON(bch2_keylist_u64s(&as->old_keys) + k->k.u64s > + ARRAY_SIZE(as->_old_keys)); + bch2_keylist_add(&as->old_keys, k); +} - mutex_lock(&c->btree_interior_update_lock); - __bch2_btree_update_free(as); - mutex_unlock(&c->btree_interior_update_lock); +static void btree_update_will_add_key(struct btree_update *as, + struct bkey_i *k) +{ + BUG_ON(bch2_keylist_u64s(&as->new_keys) + k->k.u64s > + ARRAY_SIZE(as->_new_keys)); + bch2_keylist_add(&as->new_keys, k); } -static inline bool six_trylock_intentwrite(struct six_lock *lock) +/* + * The transactional part of an interior btree node update, where we journal the + * update we did to the interior node and update alloc info: + */ +static int btree_update_nodes_written_trans(struct btree_trans *trans, + struct btree_update *as) { - if (!six_trylock_intent(lock)) - return false; + struct bkey_i *k; + int ret; + + trans->extra_journal_entries = (void *) &as->journal_entries[0]; + trans->extra_journal_entry_u64s = as->journal_u64s; + trans->journal_pin = &as->journal; - if (!six_trylock_write(lock)) { - six_unlock_intent(lock); - return false; + for_each_keylist_key(&as->new_keys, k) { + ret = bch2_trans_mark_key(trans, bkey_i_to_s_c(k), + 0, 0, BTREE_TRIGGER_INSERT); + if (ret) + return ret; } - return true; + for_each_keylist_key(&as->old_keys, k) { + ret = bch2_trans_mark_key(trans, bkey_i_to_s_c(k), + 0, 0, BTREE_TRIGGER_OVERWRITE); + if (ret) + return ret; + } + + return 0; } -static void btree_update_nodes_written(struct closure *cl) +static void btree_update_nodes_written(struct btree_update *as) { - struct btree_update *as = container_of(cl, struct btree_update, cl); - struct btree *nodes_need_write[BTREE_MAX_DEPTH * 2 + GC_MERGE_NODES + 1]; - unsigned nr_nodes_need_write; - struct journal_res res = { 0 }; struct bch_fs *c = as->c; - struct btree_root *r; - struct btree *b; + struct btree *b = as->b; + u64 journal_seq = 0; + unsigned i; int ret; /* @@ -638,78 +527,17 @@ static void btree_update_nodes_written(struct closure *cl) * to child nodes that weren't written yet: now, the child nodes have * been written so we can write out the update to the interior node. */ - mutex_lock(&c->btree_interior_update_lock); - as->nodes_written = true; -again: - nr_nodes_need_write = 0; - as = list_first_entry_or_null(&c->btree_interior_updates_unwritten, - struct btree_update, unwritten_list); - if (!as || !as->nodes_written) { - mutex_unlock(&c->btree_interior_update_lock); - return; - } - - b = as->b; - if (b && !six_trylock_intentwrite(&b->lock)) { - mutex_unlock(&c->btree_interior_update_lock); - - btree_node_lock_type(c, b, SIX_LOCK_intent); - six_lock_write(&b->lock); - - six_unlock_write(&b->lock); - six_unlock_intent(&b->lock); - - mutex_lock(&c->btree_interior_update_lock); - goto again; - } - - ret = bch2_journal_res_get(&c->journal, &res, as->journal_u64s, - JOURNAL_RES_GET_NONBLOCK| - JOURNAL_RES_GET_RESERVED); - if (ret == -EAGAIN) { - unsigned u64s = as->journal_u64s; - - if (b) { - six_unlock_write(&b->lock); - six_unlock_intent(&b->lock); - } - - mutex_unlock(&c->btree_interior_update_lock); - - ret = bch2_journal_res_get(&c->journal, &res, u64s, - JOURNAL_RES_GET_CHECK| - JOURNAL_RES_GET_RESERVED); - if (!ret) { - mutex_lock(&c->btree_interior_update_lock); - goto again; - } - } - - if (!ret) { - struct journal_buf *buf = &c->journal.buf[res.idx]; - struct jset_entry *entry = vstruct_idx(buf->data, res.offset); - - res.offset += as->journal_u64s; - res.u64s -= as->journal_u64s; - memcpy_u64s(entry, as->journal_entries, as->journal_u64s); - } else { - /* - * On journal error we have to run most of the normal path so - * that shutdown works - unblocking btree node writes in - * particular and writing them if needed - except for - * journalling the update: - */ - - BUG_ON(!bch2_journal_error(&c->journal)); - } - - switch (as->mode) { - case BTREE_INTERIOR_NO_UPDATE: - BUG(); - case BTREE_INTERIOR_UPDATING_NODE: - /* @b is the node we did the final insert into: */ - + ret = bch2_trans_do(c, &as->disk_res, &journal_seq, + BTREE_INSERT_NOFAIL| + BTREE_INSERT_NOCHECK_RW| + BTREE_INSERT_JOURNAL_RESERVED, + btree_update_nodes_written_trans(&trans, as)); + BUG_ON(ret && !bch2_journal_error(&c->journal)); + + if (b) { /* + * @b is the node we did the final insert into: + * * On failure to get a journal reservation, we still have to * unblock the write and allow most of the write path to happen * so that shutdown works, but the i->journal_seq mechanism @@ -719,83 +547,90 @@ again: * we're in journal error state: */ + btree_node_lock_type(c, b, SIX_LOCK_intent); + btree_node_lock_type(c, b, SIX_LOCK_write); + mutex_lock(&c->btree_interior_update_lock); + list_del(&as->write_blocked_list); - if (!ret) { + if (!ret && as->b == b) { struct bset *i = btree_bset_last(b); + BUG_ON(!b->level); + BUG_ON(!btree_node_dirty(b)); + i->journal_seq = cpu_to_le64( - max(res.seq, + max(journal_seq, le64_to_cpu(i->journal_seq))); - bch2_btree_add_journal_pin(c, b, res.seq); + bch2_btree_add_journal_pin(c, b, journal_seq); } - nodes_need_write[nr_nodes_need_write++] = b; - + mutex_unlock(&c->btree_interior_update_lock); six_unlock_write(&b->lock); - six_unlock_intent(&b->lock); - break; - - case BTREE_INTERIOR_UPDATING_AS: - BUG_ON(b); - break; - case BTREE_INTERIOR_UPDATING_ROOT: - r = &c->btree_roots[as->btree_id]; - - BUG_ON(b); - - mutex_lock(&c->btree_root_lock); - bkey_copy(&r->key, as->parent_keys.keys); - r->level = as->level; - r->alive = true; - c->btree_roots_dirty = true; - mutex_unlock(&c->btree_root_lock); - break; + btree_node_write_if_need(c, b, SIX_LOCK_intent); + six_unlock_intent(&b->lock); } bch2_journal_pin_drop(&c->journal, &as->journal); - bch2_journal_res_put(&c->journal, &res); bch2_journal_preres_put(&c->journal, &as->journal_preres); - while (as->nr_new_nodes) { - b = as->new_nodes[--as->nr_new_nodes]; + mutex_lock(&c->btree_interior_update_lock); + for (i = 0; i < as->nr_new_nodes; i++) { + b = as->new_nodes[i]; BUG_ON(b->will_make_reachable != (unsigned long) as); b->will_make_reachable = 0; + } + mutex_unlock(&c->btree_interior_update_lock); + + for (i = 0; i < as->nr_new_nodes; i++) { + b = as->new_nodes[i]; - nodes_need_write[nr_nodes_need_write++] = b; + btree_node_lock_type(c, b, SIX_LOCK_read); + btree_node_write_if_need(c, b, SIX_LOCK_read); + six_unlock_read(&b->lock); } - while (as->nr_pending) - bch2_btree_node_free_ondisk(c, - &as->pending[--as->nr_pending], res.seq); + for (i = 0; i < as->nr_open_buckets; i++) + bch2_open_bucket_put(c, c->open_buckets + as->open_buckets[i]); - __bch2_btree_update_free(as); - /* - * for flush_held_btree_writes() waiting on updates to flush or - * nodes to be writeable: - */ - closure_wake_up(&c->btree_interior_update_wait); + bch2_btree_update_free(as); +} - /* - * Can't take btree node locks while holding btree_interior_update_lock: - * */ - mutex_unlock(&c->btree_interior_update_lock); +static void btree_interior_update_work(struct work_struct *work) +{ + struct bch_fs *c = + container_of(work, struct bch_fs, btree_interior_update_work); + struct btree_update *as; - /* Do btree writes after dropping journal res/locks: */ - while (nr_nodes_need_write) { - b = nodes_need_write[--nr_nodes_need_write]; + while (1) { + mutex_lock(&c->btree_interior_update_lock); + as = list_first_entry_or_null(&c->btree_interior_updates_unwritten, + struct btree_update, unwritten_list); + if (as && !as->nodes_written) + as = NULL; + mutex_unlock(&c->btree_interior_update_lock); - btree_node_lock_type(c, b, SIX_LOCK_read); - bch2_btree_node_write_cond(c, b, btree_node_need_write(b)); - six_unlock_read(&b->lock); + if (!as) + break; + + btree_update_nodes_written(as); } +} + +static void btree_update_set_nodes_written(struct closure *cl) +{ + struct btree_update *as = container_of(cl, struct btree_update, cl); + struct bch_fs *c = as->c; mutex_lock(&c->btree_interior_update_lock); - goto again; + as->nodes_written = true; + mutex_unlock(&c->btree_interior_update_lock); + + queue_work(c->btree_interior_update_worker, &c->btree_interior_update_work); } /* @@ -814,7 +649,6 @@ static void btree_update_updated_node(struct btree_update *as, struct btree *b) as->mode = BTREE_INTERIOR_UPDATING_NODE; as->b = b; - as->level = b->level; list_add(&as->write_blocked_list, &b->write_blocked); mutex_unlock(&c->btree_interior_update_lock); @@ -845,25 +679,45 @@ static void btree_update_reparent(struct btree_update *as, static void btree_update_updated_root(struct btree_update *as, struct btree *b) { + struct bkey_i *insert = &b->key; struct bch_fs *c = as->c; BUG_ON(as->mode != BTREE_INTERIOR_NO_UPDATE); - BUG_ON(!bch2_keylist_empty(&as->parent_keys)); + + BUG_ON(as->journal_u64s + jset_u64s(insert->k.u64s) > + ARRAY_SIZE(as->journal_entries)); + + as->journal_u64s += + journal_entry_set((void *) &as->journal_entries[as->journal_u64s], + BCH_JSET_ENTRY_btree_root, + b->btree_id, b->level, + insert, insert->k.u64s); mutex_lock(&c->btree_interior_update_lock); list_add_tail(&as->unwritten_list, &c->btree_interior_updates_unwritten); as->mode = BTREE_INTERIOR_UPDATING_ROOT; - as->level = b->level; - bch2_keylist_add(&as->parent_keys, &b->key); mutex_unlock(&c->btree_interior_update_lock); } -static void btree_node_will_make_reachable(struct btree_update *as, - struct btree *b) +/* + * bch2_btree_update_add_new_node: + * + * This causes @as to wait on @b to be written, before it gets to + * bch2_btree_update_nodes_written + * + * Additionally, it sets b->will_make_reachable to prevent any additional writes + * to @b from happening besides the first until @b is reachable on disk + * + * And it adds @b to the list of @as's new nodes, so that we can update sector + * counts in bch2_btree_update_nodes_written: + */ +void bch2_btree_update_add_new_node(struct btree_update *as, struct btree *b) { struct bch_fs *c = as->c; + closure_get(&as->cl); + mutex_lock(&c->btree_interior_update_lock); BUG_ON(as->nr_new_nodes >= ARRAY_SIZE(as->new_nodes)); BUG_ON(b->will_make_reachable); @@ -871,10 +725,14 @@ static void btree_node_will_make_reachable(struct btree_update *as, as->new_nodes[as->nr_new_nodes++] = b; b->will_make_reachable = 1UL|(unsigned long) as; - closure_get(&as->cl); mutex_unlock(&c->btree_interior_update_lock); + + btree_update_will_add_key(as, &b->key); } +/* + * returns true if @b was a new node + */ static void btree_update_drop_new_node(struct bch_fs *c, struct btree *b) { struct btree_update *as; @@ -882,6 +740,11 @@ static void btree_update_drop_new_node(struct bch_fs *c, struct btree *b) unsigned i; mutex_lock(&c->btree_interior_update_lock); + /* + * When b->will_make_reachable != 0, it owns a ref on as->cl that's + * dropped when it gets written by bch2_btree_complete_write - the + * xchg() is for synchronization with bch2_btree_complete_write: + */ v = xchg(&b->will_make_reachable, 0); as = (struct btree_update *) (v & ~1UL); @@ -903,25 +766,11 @@ found: closure_put(&as->cl); } -static void btree_interior_update_add_node_reference(struct btree_update *as, - struct btree *b) +void bch2_btree_update_get_open_buckets(struct btree_update *as, struct btree *b) { - struct bch_fs *c = as->c; - struct pending_btree_node_free *d; - - mutex_lock(&c->btree_interior_update_lock); - - /* Add this node to the list of nodes being freed: */ - BUG_ON(as->nr_pending >= ARRAY_SIZE(as->pending)); - - d = &as->pending[as->nr_pending++]; - d->index_update_done = false; - d->seq = b->data->keys.seq; - d->btree_id = b->btree_id; - d->level = b->level; - bkey_copy(&d->key, &b->key); - - mutex_unlock(&c->btree_interior_update_lock); + while (b->ob.nr) + as->open_buckets[as->nr_open_buckets++] = + b->ob.v[--b->ob.nr]; } /* @@ -941,8 +790,6 @@ void bch2_btree_interior_update_will_free_node(struct btree_update *as, if (btree_node_fake(b)) return; - btree_interior_update_add_node_reference(as, b); - mutex_lock(&c->btree_interior_update_lock); /* @@ -984,16 +831,28 @@ void bch2_btree_interior_update_will_free_node(struct btree_update *as, bch2_journal_pin_drop(&c->journal, &w->journal); mutex_unlock(&c->btree_interior_update_lock); + + /* + * Is this a node that isn't reachable on disk yet? + * + * Nodes that aren't reachable yet have writes blocked until they're + * reachable - now that we've cancelled any pending writes and moved + * things waiting on that write to wait on this update, we can drop this + * node from the list of nodes that the other update is making + * reachable, prior to freeing it: + */ + btree_update_drop_new_node(c, b); + + btree_update_will_delete_key(as, &b->key); } void bch2_btree_update_done(struct btree_update *as) { BUG_ON(as->mode == BTREE_INTERIOR_NO_UPDATE); - bch2_btree_reserve_put(as->c, as->reserve); - as->reserve = NULL; + bch2_btree_reserve_put(as); - continue_at(&as->cl, btree_update_nodes_written, system_freezable_wq); + continue_at(&as->cl, btree_update_set_nodes_written, system_freezable_wq); } struct btree_update * @@ -1002,12 +861,32 @@ bch2_btree_update_start(struct btree_trans *trans, enum btree_id id, struct closure *cl) { struct bch_fs *c = trans->c; - struct journal_preres journal_preres = { 0 }; - struct btree_reserve *reserve; struct btree_update *as; - int ret; + int ret, disk_res_flags = (flags & BTREE_INSERT_NOFAIL) + ? BCH_DISK_RESERVATION_NOFAIL : 0; + + /* + * This check isn't necessary for correctness - it's just to potentially + * prevent us from doing a lot of work that'll end up being wasted: + */ + ret = bch2_journal_error(&c->journal); + if (ret) + return ERR_PTR(ret); - ret = bch2_journal_preres_get(&c->journal, &journal_preres, + as = mempool_alloc(&c->btree_interior_update_pool, GFP_NOIO); + memset(as, 0, sizeof(*as)); + closure_init(&as->cl, NULL); + as->c = c; + as->mode = BTREE_INTERIOR_NO_UPDATE; + as->btree_id = id; + INIT_LIST_HEAD(&as->list); + INIT_LIST_HEAD(&as->unwritten_list); + INIT_LIST_HEAD(&as->write_blocked_list); + bch2_keylist_init(&as->old_keys, as->_old_keys); + bch2_keylist_init(&as->new_keys, as->_new_keys); + bch2_keylist_init(&as->parent_keys, as->inline_keys); + + ret = bch2_journal_preres_get(&c->journal, &as->journal_preres, BTREE_UPDATE_JOURNAL_RES, JOURNAL_RES_GET_NONBLOCK); if (ret == -EAGAIN) { @@ -1016,46 +895,41 @@ bch2_btree_update_start(struct btree_trans *trans, enum btree_id id, bch2_trans_unlock(trans); - ret = bch2_journal_preres_get(&c->journal, &journal_preres, + ret = bch2_journal_preres_get(&c->journal, &as->journal_preres, BTREE_UPDATE_JOURNAL_RES, 0); if (ret) return ERR_PTR(ret); if (!bch2_trans_relock(trans)) { - bch2_journal_preres_put(&c->journal, &journal_preres); - return ERR_PTR(-EINTR); + ret = -EINTR; + goto err; } } - reserve = bch2_btree_reserve_get(c, nr_nodes, flags, cl); - if (IS_ERR(reserve)) { - bch2_journal_preres_put(&c->journal, &journal_preres); - return ERR_CAST(reserve); - } - - as = mempool_alloc(&c->btree_interior_update_pool, GFP_NOIO); - memset(as, 0, sizeof(*as)); - closure_init(&as->cl, NULL); - as->c = c; - as->mode = BTREE_INTERIOR_NO_UPDATE; - as->btree_id = id; - as->reserve = reserve; - INIT_LIST_HEAD(&as->write_blocked_list); - INIT_LIST_HEAD(&as->unwritten_list); - as->journal_preres = journal_preres; + ret = bch2_disk_reservation_get(c, &as->disk_res, + nr_nodes * c->opts.btree_node_size, + c->opts.metadata_replicas, + disk_res_flags); + if (ret) + goto err; - bch2_keylist_init(&as->parent_keys, as->inline_keys); + ret = bch2_btree_reserve_get(as, nr_nodes, flags, cl); + if (ret) + goto err; mutex_lock(&c->btree_interior_update_lock); list_add_tail(&as->list, &c->btree_interior_update_list); mutex_unlock(&c->btree_interior_update_lock); return as; +err: + bch2_btree_update_free(as); + return ERR_PTR(ret); } /* Btree root updates: */ -static void __bch2_btree_set_root_inmem(struct bch_fs *c, struct btree *b) +static void bch2_btree_set_root_inmem(struct bch_fs *c, struct btree *b) { /* Root nodes cannot be reaped */ mutex_lock(&c->btree_cache.lock); @@ -1073,38 +947,6 @@ static void __bch2_btree_set_root_inmem(struct bch_fs *c, struct btree *b) bch2_recalc_btree_reserve(c); } -static void bch2_btree_set_root_inmem(struct btree_update *as, struct btree *b) -{ - struct bch_fs *c = as->c; - struct btree *old = btree_node_root(c, b); - struct bch_fs_usage *fs_usage; - - __bch2_btree_set_root_inmem(c, b); - - mutex_lock(&c->btree_interior_update_lock); - percpu_down_read(&c->mark_lock); - fs_usage = bch2_fs_usage_scratch_get(c); - - bch2_mark_key_locked(c, bkey_i_to_s_c(&b->key), - 0, 0, fs_usage, 0, - BTREE_TRIGGER_INSERT); - if (gc_visited(c, gc_pos_btree_root(b->btree_id))) - bch2_mark_key_locked(c, bkey_i_to_s_c(&b->key), - 0, 0, NULL, 0, - BTREE_TRIGGER_INSERT| - BTREE_TRIGGER_GC); - - if (old && !btree_node_fake(old)) - bch2_btree_node_free_index(as, NULL, - bkey_i_to_s_c(&old->key), - fs_usage); - bch2_fs_usage_apply(c, fs_usage, &as->reserve->disk_res, 0); - - bch2_fs_usage_scratch_put(c, fs_usage); - percpu_up_read(&c->mark_lock); - mutex_unlock(&c->btree_interior_update_lock); -} - /** * bch_btree_set_root - update the root in memory and on disk * @@ -1135,7 +977,7 @@ static void bch2_btree_set_root(struct btree_update *as, struct btree *b, */ bch2_btree_node_lock_write(old, iter); - bch2_btree_set_root_inmem(as, b); + bch2_btree_set_root_inmem(c, b); btree_update_updated_root(as, b); @@ -1156,57 +998,21 @@ static void bch2_insert_fixup_btree_ptr(struct btree_update *as, struct btree *b struct bkey_i *insert, struct btree_node_iter *node_iter) { - struct bch_fs *c = as->c; - struct bch_fs_usage *fs_usage; - struct jset_entry *entry; struct bkey_packed *k; - struct bkey tmp; BUG_ON(as->journal_u64s + jset_u64s(insert->k.u64s) > ARRAY_SIZE(as->journal_entries)); - entry = (void *) &as->journal_entries[as->journal_u64s]; - memset(entry, 0, sizeof(*entry)); - entry->u64s = cpu_to_le16(insert->k.u64s); - entry->type = BCH_JSET_ENTRY_btree_keys; - entry->btree_id = b->btree_id; - entry->level = b->level; - memcpy_u64s_small(entry->_data, insert, insert->k.u64s); - as->journal_u64s += jset_u64s(insert->k.u64s); - - mutex_lock(&c->btree_interior_update_lock); - percpu_down_read(&c->mark_lock); - fs_usage = bch2_fs_usage_scratch_get(c); - - bch2_mark_key_locked(c, bkey_i_to_s_c(insert), - 0, 0, fs_usage, 0, - BTREE_TRIGGER_INSERT); - - if (gc_visited(c, gc_pos_btree_node(b))) - bch2_mark_key_locked(c, bkey_i_to_s_c(insert), - 0, 0, NULL, 0, - BTREE_TRIGGER_INSERT| - BTREE_TRIGGER_GC); + as->journal_u64s += + journal_entry_set((void *) &as->journal_entries[as->journal_u64s], + BCH_JSET_ENTRY_btree_keys, + b->btree_id, b->level, + insert, insert->k.u64s); while ((k = bch2_btree_node_iter_peek_all(node_iter, b)) && bkey_iter_pos_cmp(b, k, &insert->k.p) < 0) bch2_btree_node_iter_advance(node_iter, b); - /* - * If we're overwriting, look up pending delete and mark so that gc - * marks it on the pending delete list: - */ - if (k && !bkey_cmp_packed(b, k, &insert->k)) - bch2_btree_node_free_index(as, b, - bkey_disassemble(b, k, &tmp), - fs_usage); - - bch2_fs_usage_apply(c, fs_usage, &as->reserve->disk_res, 0); - - bch2_fs_usage_scratch_put(c, fs_usage); - percpu_up_read(&c->mark_lock); - mutex_unlock(&c->btree_interior_update_lock); - bch2_btree_bset_insert_key(iter, b, node_iter, insert); set_btree_node_dirty(b); set_btree_node_need_write(b); @@ -1226,6 +1032,7 @@ static struct btree *__btree_split_node(struct btree_update *as, struct bkey_packed *k, *prev = NULL; n2 = bch2_btree_node_alloc(as, n1->level); + bch2_btree_update_add_new_node(as, n2); n2->data->max_key = n1->data->max_key; n2->data->format = n1->format; @@ -1321,14 +1128,6 @@ static void btree_split_insert_keys(struct btree_update *as, struct btree *b, struct bkey_packed *src, *dst, *n; struct bset *i; - /* - * XXX - * - * these updates must be journalled - * - * oops - */ - BUG_ON(btree_node_type(b) != BKEY_TYPE_BTREE); bch2_btree_node_iter_init(&node_iter, b, &k->k.p); @@ -1380,6 +1179,7 @@ static void btree_split(struct btree_update *as, struct btree *b, bch2_btree_interior_update_will_free_node(as, b); n1 = bch2_btree_node_alloc_replacement(as, b); + bch2_btree_update_add_new_node(as, n1); if (keys) btree_split_insert_keys(as, n1, iter, keys); @@ -1439,11 +1239,11 @@ static void btree_split(struct btree_update *as, struct btree *b, bch2_btree_set_root(as, n1, iter); } - bch2_open_buckets_put(c, &n1->ob); + bch2_btree_update_get_open_buckets(as, n1); if (n2) - bch2_open_buckets_put(c, &n2->ob); + bch2_btree_update_get_open_buckets(as, n2); if (n3) - bch2_open_buckets_put(c, &n3->ob); + bch2_btree_update_get_open_buckets(as, n3); /* Successful split, update the iterator to point to the new nodes: */ @@ -1538,7 +1338,7 @@ void bch2_btree_insert_node(struct btree_update *as, struct btree *b, bch2_btree_node_lock_for_insert(c, b, iter); - if (!bch2_btree_node_insert_fits(c, b, bch_keylist_u64s(keys))) { + if (!bch2_btree_node_insert_fits(c, b, bch2_keylist_u64s(keys))) { bch2_btree_node_unlock_write(b, iter); goto split; } @@ -1749,6 +1549,7 @@ retry: bch2_btree_interior_update_will_free_node(as, m); n = bch2_btree_node_alloc(as, b->level); + bch2_btree_update_add_new_node(as, n); btree_set_min(n, prev->data->min_key); btree_set_max(n, next->data->max_key); @@ -1771,7 +1572,7 @@ retry: bch2_btree_insert_node(as, parent, iter, &as->parent_keys, flags); - bch2_open_buckets_put(c, &n->ob); + bch2_btree_update_get_open_buckets(as, n); six_lock_increment(&b->lock, SIX_LOCK_intent); bch2_btree_iter_node_drop(iter, b); @@ -1859,6 +1660,7 @@ static int __btree_node_rewrite(struct bch_fs *c, struct btree_iter *iter, bch2_btree_interior_update_will_free_node(as, b); n = bch2_btree_node_alloc_replacement(as, b); + bch2_btree_update_add_new_node(as, n); bch2_btree_build_aux_trees(n); six_unlock_write(&n->lock); @@ -1874,7 +1676,7 @@ static int __btree_node_rewrite(struct bch_fs *c, struct btree_iter *iter, bch2_btree_set_root(as, n, iter); } - bch2_open_buckets_put(c, &n->ob); + bch2_btree_update_get_open_buckets(as, n); six_lock_increment(&b->lock, SIX_LOCK_intent); bch2_btree_iter_node_drop(iter, b); @@ -1949,49 +1751,8 @@ static void __bch2_btree_node_update_key(struct bch_fs *c, struct btree *parent; int ret; - /* - * Two corner cases that need to be thought about here: - * - * @b may not be reachable yet - there might be another interior update - * operation waiting on @b to be written, and we're gonna deliver the - * write completion to that interior update operation _before_ - * persisting the new_key update - * - * That ends up working without us having to do anything special here: - * the reason is, we do kick off (and do the in memory updates) for the - * update for @new_key before we return, creating a new interior_update - * operation here. - * - * The new interior update operation here will in effect override the - * previous one. The previous one was going to terminate - make @b - * reachable - in one of two ways: - * - updating the btree root pointer - * In that case, - * no, this doesn't work. argh. - */ - - if (b->will_make_reachable) - as->must_rewrite = true; - - btree_interior_update_add_node_reference(as, b); - - /* - * XXX: the rest of the update path treats this like we're actually - * inserting a new node and deleting the existing node, so the - * reservation needs to include enough space for @b - * - * that is actually sketch as fuck though and I am surprised the code - * seems to work like that, definitely need to go back and rework it - * into something saner. - * - * (I think @b is just getting double counted until the btree update - * finishes and "deletes" @b on disk) - */ - ret = bch2_disk_reservation_add(c, &as->reserve->disk_res, - c->opts.btree_node_size * - bch2_bkey_nr_ptrs(bkey_i_to_s_c(new_key)), - BCH_DISK_RESERVATION_NOFAIL); - BUG_ON(ret); + btree_update_will_delete_key(as, &b->key); + btree_update_will_add_key(as, new_key); parent = btree_node_parent(iter, b); if (parent) { @@ -2019,44 +1780,18 @@ static void __bch2_btree_node_update_key(struct bch_fs *c, bkey_copy(&b->key, new_key); } } else { - struct bch_fs_usage *fs_usage; - BUG_ON(btree_node_root(c, b) != b); bch2_btree_node_lock_write(b, iter); + bkey_copy(&b->key, new_key); - mutex_lock(&c->btree_interior_update_lock); - percpu_down_read(&c->mark_lock); - fs_usage = bch2_fs_usage_scratch_get(c); - - bch2_mark_key_locked(c, bkey_i_to_s_c(new_key), - 0, 0, fs_usage, 0, - BTREE_TRIGGER_INSERT); - if (gc_visited(c, gc_pos_btree_root(b->btree_id))) - bch2_mark_key_locked(c, bkey_i_to_s_c(new_key), - 0, 0, NULL, 0, - BTREE_TRIGGER_INSERT|| - BTREE_TRIGGER_GC); - - bch2_btree_node_free_index(as, NULL, - bkey_i_to_s_c(&b->key), - fs_usage); - bch2_fs_usage_apply(c, fs_usage, &as->reserve->disk_res, 0); - - bch2_fs_usage_scratch_put(c, fs_usage); - percpu_up_read(&c->mark_lock); - mutex_unlock(&c->btree_interior_update_lock); - - if (btree_ptr_hash_val(new_key) != b->hash_val) { + if (btree_ptr_hash_val(&b->key) != b->hash_val) { mutex_lock(&c->btree_cache.lock); bch2_btree_node_hash_remove(&c->btree_cache, b); - bkey_copy(&b->key, new_key); ret = __bch2_btree_node_hash_insert(&c->btree_cache, b); BUG_ON(ret); mutex_unlock(&c->btree_cache.lock); - } else { - bkey_copy(&b->key, new_key); } btree_update_updated_root(as, b); @@ -2171,7 +1906,7 @@ void bch2_btree_set_root_for_read(struct bch_fs *c, struct btree *b) { BUG_ON(btree_node_root(c, b)); - __bch2_btree_set_root_inmem(c, b); + bch2_btree_set_root_inmem(c, b); } void bch2_btree_root_alloc(struct bch_fs *c, enum btree_id id) @@ -2210,7 +1945,7 @@ void bch2_btree_root_alloc(struct bch_fs *c, enum btree_id id) ret = bch2_btree_node_hash_insert(&c->btree_cache, b, b->level, b->btree_id); BUG_ON(ret); - __bch2_btree_set_root_inmem(c, b); + bch2_btree_set_root_inmem(c, b); six_unlock_write(&b->lock); six_unlock_intent(&b->lock); @@ -2246,3 +1981,75 @@ size_t bch2_btree_interior_updates_nr_pending(struct bch_fs *c) return ret; } + +void bch2_journal_entries_to_btree_roots(struct bch_fs *c, struct jset *jset) +{ + struct btree_root *r; + struct jset_entry *entry; + + mutex_lock(&c->btree_root_lock); + + vstruct_for_each(jset, entry) + if (entry->type == BCH_JSET_ENTRY_btree_root) { + r = &c->btree_roots[entry->btree_id]; + r->level = entry->level; + r->alive = true; + bkey_copy(&r->key, &entry->start[0]); + } + + mutex_unlock(&c->btree_root_lock); +} + +struct jset_entry * +bch2_btree_roots_to_journal_entries(struct bch_fs *c, + struct jset_entry *start, + struct jset_entry *end) +{ + struct jset_entry *entry; + unsigned long have = 0; + unsigned i; + + for (entry = start; entry < end; entry = vstruct_next(entry)) + if (entry->type == BCH_JSET_ENTRY_btree_root) + __set_bit(entry->btree_id, &have); + + mutex_lock(&c->btree_root_lock); + + for (i = 0; i < BTREE_ID_NR; i++) + if (c->btree_roots[i].alive && !test_bit(i, &have)) { + journal_entry_set(end, + BCH_JSET_ENTRY_btree_root, + i, c->btree_roots[i].level, + &c->btree_roots[i].key, + c->btree_roots[i].key.u64s); + end = vstruct_next(end); + } + + mutex_unlock(&c->btree_root_lock); + + return end; +} + +void bch2_fs_btree_interior_update_exit(struct bch_fs *c) +{ + if (c->btree_interior_update_worker) + destroy_workqueue(c->btree_interior_update_worker); + mempool_exit(&c->btree_interior_update_pool); +} + +int bch2_fs_btree_interior_update_init(struct bch_fs *c) +{ + mutex_init(&c->btree_reserve_cache_lock); + INIT_LIST_HEAD(&c->btree_interior_update_list); + INIT_LIST_HEAD(&c->btree_interior_updates_unwritten); + mutex_init(&c->btree_interior_update_lock); + INIT_WORK(&c->btree_interior_update_work, btree_interior_update_work); + + c->btree_interior_update_worker = + alloc_workqueue("btree_update", WQ_UNBOUND|WQ_MEM_RECLAIM, 1); + if (!c->btree_interior_update_worker) + return -ENOMEM; + + return mempool_init_kmalloc_pool(&c->btree_interior_update_pool, 1, + sizeof(struct btree_update)); +} diff --git a/libbcachefs/btree_update_interior.h b/libbcachefs/btree_update_interior.h index 2fddf5d3..a6be62d3 100644 --- a/libbcachefs/btree_update_interior.h +++ b/libbcachefs/btree_update_interior.h @@ -6,34 +6,13 @@ #include "btree_locking.h" #include "btree_update.h" -struct btree_reserve { - struct disk_reservation disk_res; - unsigned nr; - struct btree *b[BTREE_RESERVE_MAX]; -}; - void __bch2_btree_calc_format(struct bkey_format_state *, struct btree *); bool bch2_btree_node_format_fits(struct bch_fs *c, struct btree *, struct bkey_format *); -/* Btree node freeing/allocation: */ - -/* - * Tracks a btree node that has been (or is about to be) freed in memory, but - * has _not_ yet been freed on disk (because the write that makes the new - * node(s) visible and frees the old hasn't completed yet) - */ -struct pending_btree_node_free { - bool index_update_done; - - __le64 seq; - enum btree_id btree_id; - unsigned level; - __BKEY_PADDED(key, BKEY_BTREE_PTR_VAL_U64s_MAX); -}; +#define BTREE_UPDATE_NODES_MAX ((BTREE_MAX_DEPTH - 2) * 2 + GC_MERGE_NODES) -#define BTREE_UPDATE_JOURNAL_RES \ - ((BKEY_BTREE_PTR_U64s_MAX + 1) * (BTREE_MAX_DEPTH - 1) * 2) +#define BTREE_UPDATE_JOURNAL_RES (BTREE_UPDATE_NODES_MAX * (BKEY_BTREE_PTR_U64s_MAX + 1)) /* * Tracks an in progress split/rewrite of a btree node and the update to the @@ -72,9 +51,8 @@ struct btree_update { unsigned nodes_written:1; enum btree_id btree_id; - u8 level; - struct btree_reserve *reserve; + struct disk_reservation disk_res; struct journal_preres journal_preres; /* @@ -96,17 +74,28 @@ struct btree_update { */ struct journal_entry_pin journal; - /* - * Nodes being freed: - * Protected by c->btree_node_pending_free_lock - */ - struct pending_btree_node_free pending[BTREE_MAX_DEPTH + GC_MERGE_NODES]; - unsigned nr_pending; + /* Preallocated nodes we reserve when we start the update: */ + struct btree *prealloc_nodes[BTREE_UPDATE_NODES_MAX]; + unsigned nr_prealloc_nodes; + + /* Nodes being freed: */ + struct keylist old_keys; + u64 _old_keys[BTREE_UPDATE_NODES_MAX * + BKEY_BTREE_PTR_VAL_U64s_MAX]; + + /* Nodes being added: */ + struct keylist new_keys; + u64 _new_keys[BTREE_UPDATE_NODES_MAX * + BKEY_BTREE_PTR_VAL_U64s_MAX]; /* New nodes, that will be made reachable by this update: */ - struct btree *new_nodes[BTREE_MAX_DEPTH * 2 + GC_MERGE_NODES]; + struct btree *new_nodes[BTREE_UPDATE_NODES_MAX]; unsigned nr_new_nodes; + u8 open_buckets[BTREE_UPDATE_NODES_MAX * + BCH_REPLICAS_MAX]; + u8 nr_open_buckets; + unsigned journal_u64s; u64 journal_entries[BTREE_UPDATE_JOURNAL_RES]; @@ -120,14 +109,12 @@ struct btree_update { u64 inline_keys[BKEY_BTREE_PTR_U64s_MAX * 3]; }; -#define for_each_pending_btree_node_free(c, as, p) \ - list_for_each_entry(as, &c->btree_interior_update_list, list) \ - for (p = as->pending; p < as->pending + as->nr_pending; p++) - void bch2_btree_node_free_inmem(struct bch_fs *, struct btree *, struct btree_iter *); void bch2_btree_node_free_never_inserted(struct bch_fs *, struct btree *); +void bch2_btree_update_get_open_buckets(struct btree_update *, struct btree *); + struct btree *__bch2_btree_node_alloc_replacement(struct btree_update *, struct btree *, struct bkey_format); @@ -139,6 +126,7 @@ bch2_btree_update_start(struct btree_trans *, enum btree_id, unsigned, void bch2_btree_interior_update_will_free_node(struct btree_update *, struct btree *); +void bch2_btree_update_add_new_node(struct btree_update *, struct btree *); void bch2_btree_insert_node(struct btree_update *, struct btree *, struct btree_iter *, struct keylist *, @@ -333,4 +321,11 @@ ssize_t bch2_btree_updates_print(struct bch_fs *, char *); size_t bch2_btree_interior_updates_nr_pending(struct bch_fs *); +void bch2_journal_entries_to_btree_roots(struct bch_fs *, struct jset *); +struct jset_entry *bch2_btree_roots_to_journal_entries(struct bch_fs *, + struct jset_entry *, struct jset_entry *); + +void bch2_fs_btree_interior_update_exit(struct bch_fs *); +int bch2_fs_btree_interior_update_init(struct bch_fs *); + #endif /* _BCACHEFS_BTREE_UPDATE_INTERIOR_H */ diff --git a/libbcachefs/btree_update_leaf.c b/libbcachefs/btree_update_leaf.c index 7faf98fd..e343d80f 100644 --- a/libbcachefs/btree_update_leaf.c +++ b/libbcachefs/btree_update_leaf.c @@ -413,6 +413,15 @@ bch2_trans_commit_write_locked(struct btree_trans *trans, goto err; } + if (unlikely(trans->extra_journal_entry_u64s)) { + memcpy_u64s_small(journal_res_entry(&c->journal, &trans->journal_res), + trans->extra_journal_entries, + trans->extra_journal_entry_u64s); + + trans->journal_res.offset += trans->extra_journal_entry_u64s; + trans->journal_res.u64s -= trans->extra_journal_entry_u64s; + } + /* * Not allowed to fail after we've gotten our journal reservation - we * have to use it: @@ -511,6 +520,10 @@ static inline int do_bch2_trans_commit(struct btree_trans *trans, bch2_btree_node_unlock_write_inlined(iter_l(i->iter)->b, i->iter); + if (!ret && trans->journal_pin) + bch2_journal_pin_add(&trans->c->journal, trans->journal_res.seq, + trans->journal_pin, NULL); + /* * Drop journal reservation after dropping write locks, since dropping * the journal reservation may kick off a journal write: @@ -800,7 +813,7 @@ int __bch2_trans_commit(struct btree_trans *trans) memset(&trans->journal_preres, 0, sizeof(trans->journal_preres)); - trans->journal_u64s = 0; + trans->journal_u64s = trans->extra_journal_entry_u64s; trans->journal_preres_u64s = 0; if (!(trans->flags & BTREE_INSERT_NOCHECK_RW) && diff --git a/libbcachefs/buckets.c b/libbcachefs/buckets.c index 2e1df04c..41e91bd7 100644 --- a/libbcachefs/buckets.c +++ b/libbcachefs/buckets.c @@ -778,29 +778,31 @@ static int bch2_mark_alloc(struct bch_fs *c, struct bkey_s_c k, }) static int __bch2_mark_metadata_bucket(struct bch_fs *c, struct bch_dev *ca, - size_t b, enum bch_data_type type, + size_t b, enum bch_data_type data_type, unsigned sectors, bool gc) { struct bucket *g = __bucket(ca, b, gc); struct bucket_mark old, new; bool overflow; - BUG_ON(type != BCH_DATA_SB && - type != BCH_DATA_JOURNAL); + BUG_ON(data_type != BCH_DATA_SB && + data_type != BCH_DATA_JOURNAL); old = bucket_cmpxchg(g, new, ({ - new.data_type = type; + new.data_type = data_type; overflow = checked_add(new.dirty_sectors, sectors); })); bch2_fs_inconsistent_on(old.data_type && - old.data_type != type, c, + old.data_type != data_type, c, "different types of data in same bucket: %s, %s", bch2_data_types[old.data_type], - bch2_data_types[type]); + bch2_data_types[data_type]); bch2_fs_inconsistent_on(overflow, c, - "bucket sector count overflow: %u + %u > U16_MAX", + "bucket %u:%zu gen %u data type %s sector count overflow: %u + %u > U16_MAX", + ca->dev_idx, b, new.gen, + bch2_data_types[old.data_type ?: data_type], old.dirty_sectors, sectors); if (c) @@ -916,58 +918,117 @@ static void bucket_set_stripe(struct bch_fs *c, } } -static bool bch2_mark_pointer(struct bch_fs *c, - struct extent_ptr_decoded p, - s64 sectors, enum bch_data_type data_type, - struct bch_fs_usage *fs_usage, - u64 journal_seq, unsigned flags) +static int __mark_pointer(struct bch_fs *c, struct bkey_s_c k, + struct extent_ptr_decoded p, + s64 sectors, enum bch_data_type ptr_data_type, + u8 bucket_gen, u8 *bucket_data_type, + u16 *dirty_sectors, u16 *cached_sectors) +{ + u16 *dst_sectors = !p.ptr.cached + ? dirty_sectors + : cached_sectors; + u16 orig_sectors = *dst_sectors; + char buf[200]; + + if (gen_after(p.ptr.gen, bucket_gen)) { + bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, + "bucket %u:%zu gen %u data type %s: ptr gen %u newer than bucket gen\n" + "while marking %s", + p.ptr.dev, PTR_BUCKET_NR(bch_dev_bkey_exists(c, p.ptr.dev), &p.ptr), + bucket_gen, + bch2_data_types[*bucket_data_type ?: ptr_data_type], + p.ptr.gen, + (bch2_bkey_val_to_text(&PBUF(buf), c, k), buf)); + return -EIO; + } + + if (gen_cmp(bucket_gen, p.ptr.gen) >= 96U) { + bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, + "bucket %u:%zu gen %u data type %s: ptr gen %u too stale\n" + "while marking %s", + p.ptr.dev, PTR_BUCKET_NR(bch_dev_bkey_exists(c, p.ptr.dev), &p.ptr), + bucket_gen, + bch2_data_types[*bucket_data_type ?: ptr_data_type], + p.ptr.gen, + (bch2_bkey_val_to_text(&PBUF(buf), c, k), buf)); + return -EIO; + } + + if (bucket_gen != p.ptr.gen && !p.ptr.cached) { + bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, + "bucket %u:%zu gen %u data type %s: stale dirty ptr (gen %u)\n" + "while marking %s", + p.ptr.dev, PTR_BUCKET_NR(bch_dev_bkey_exists(c, p.ptr.dev), &p.ptr), + bucket_gen, + bch2_data_types[*bucket_data_type ?: ptr_data_type], + p.ptr.gen, + (bch2_bkey_val_to_text(&PBUF(buf), c, k), buf)); + return -EIO; + } + + if (bucket_gen != p.ptr.gen) + return 1; + + if (*bucket_data_type && *bucket_data_type != ptr_data_type) { + bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, + "bucket %u:%zu gen %u different types of data in same bucket: %s, %s\n" + "while marking %s", + p.ptr.dev, PTR_BUCKET_NR(bch_dev_bkey_exists(c, p.ptr.dev), &p.ptr), + bucket_gen, + bch2_data_types[*bucket_data_type], + bch2_data_types[ptr_data_type], + (bch2_bkey_val_to_text(&PBUF(buf), c, k), buf)); + return -EIO; + } + + if (checked_add(*dst_sectors, sectors)) { + bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, + "bucket %u:%zu gen %u data type %s sector count overflow: %u + %lli > U16_MAX\n" + "while marking %s", + p.ptr.dev, PTR_BUCKET_NR(bch_dev_bkey_exists(c, p.ptr.dev), &p.ptr), + bucket_gen, + bch2_data_types[*bucket_data_type ?: ptr_data_type], + orig_sectors, sectors, + (bch2_bkey_val_to_text(&PBUF(buf), c, k), buf)); + return -EIO; + } + + *bucket_data_type = *dirty_sectors || *cached_sectors + ? ptr_data_type : 0; + return 0; +} + +static int bch2_mark_pointer(struct bch_fs *c, struct bkey_s_c k, + struct extent_ptr_decoded p, + s64 sectors, enum bch_data_type data_type, + struct bch_fs_usage *fs_usage, + u64 journal_seq, unsigned flags) { bool gc = flags & BTREE_TRIGGER_GC; struct bucket_mark old, new; struct bch_dev *ca = bch_dev_bkey_exists(c, p.ptr.dev); struct bucket *g = PTR_BUCKET(ca, &p.ptr, gc); - bool overflow; + u8 bucket_data_type; u64 v; + int ret; v = atomic64_read(&g->_mark.v); do { new.v.counter = old.v.counter = v; + bucket_data_type = new.data_type; - /* - * Check this after reading bucket mark to guard against - * the allocator invalidating a bucket after we've already - * checked the gen - */ - if (gen_after(p.ptr.gen, new.gen)) { - bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, - "pointer gen in the future"); - return true; - } - - if (new.gen != p.ptr.gen) { - /* XXX write repair code for this */ - if (!p.ptr.cached && - test_bit(JOURNAL_REPLAY_DONE, &c->journal.flags)) - bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, - "stale dirty pointer"); - return true; - } - - if (!p.ptr.cached) - overflow = checked_add(new.dirty_sectors, sectors); - else - overflow = checked_add(new.cached_sectors, sectors); + ret = __mark_pointer(c, k, p, sectors, data_type, new.gen, + &bucket_data_type, + &new.dirty_sectors, + &new.cached_sectors); + if (ret) + return ret; - if (!new.dirty_sectors && - !new.cached_sectors) { - new.data_type = 0; + new.data_type = bucket_data_type; - if (journal_seq) { - new.journal_seq_valid = 1; - new.journal_seq = journal_seq; - } - } else { - new.data_type = data_type; + if (journal_seq) { + new.journal_seq_valid = 1; + new.journal_seq = journal_seq; } if (flags & BTREE_TRIGGER_NOATOMIC) { @@ -978,25 +1039,11 @@ static bool bch2_mark_pointer(struct bch_fs *c, old.v.counter, new.v.counter)) != old.v.counter); - if (old.data_type && old.data_type != data_type) - bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, - "bucket %u:%zu gen %u different types of data in same bucket: %s, %s", - p.ptr.dev, PTR_BUCKET_NR(ca, &p.ptr), - new.gen, - bch2_data_types[old.data_type], - bch2_data_types[data_type]); - - bch2_fs_inconsistent_on(overflow, c, - "bucket sector count overflow: %u + %lli > U16_MAX", - !p.ptr.cached - ? old.dirty_sectors - : old.cached_sectors, sectors); - bch2_dev_usage_update(c, ca, fs_usage, old, new, gc); BUG_ON(!gc && bucket_became_unavailable(old, new)); - return false; + return 0; } static int bch2_mark_stripe_ptr(struct bch_fs *c, @@ -1060,6 +1107,7 @@ static int bch2_mark_extent(struct bch_fs *c, struct bkey_s_c k, struct extent_ptr_decoded p; struct bch_replicas_padded r; s64 dirty_sectors = 0; + bool stale; int ret; r.e.data_type = data_type; @@ -1072,8 +1120,13 @@ static int bch2_mark_extent(struct bch_fs *c, struct bkey_s_c k, s64 disk_sectors = data_type == BCH_DATA_BTREE ? sectors : ptr_disk_sectors_delta(p, offset, sectors, flags); - bool stale = bch2_mark_pointer(c, p, disk_sectors, data_type, - fs_usage, journal_seq, flags); + + ret = bch2_mark_pointer(c, k, p, disk_sectors, data_type, + fs_usage, journal_seq, flags); + if (ret < 0) + return ret; + + stale = ret > 0; if (p.ptr.cached) { if (!stale) @@ -1175,7 +1228,7 @@ static int bch2_mark_stripe(struct bch_fs *c, struct bkey_s_c k, return 0; } -int bch2_mark_key_locked(struct bch_fs *c, +static int bch2_mark_key_locked(struct bch_fs *c, struct bkey_s_c k, unsigned offset, s64 sectors, struct bch_fs_usage *fs_usage, @@ -1434,29 +1487,30 @@ static int trans_get_key(struct btree_trans *trans, } static int bch2_trans_mark_pointer(struct btree_trans *trans, - struct extent_ptr_decoded p, + struct bkey_s_c k, struct extent_ptr_decoded p, s64 sectors, enum bch_data_type data_type) { struct bch_fs *c = trans->c; struct bch_dev *ca = bch_dev_bkey_exists(c, p.ptr.dev); struct btree_iter *iter; - struct bkey_s_c k; + struct bkey_s_c k_a; struct bkey_alloc_unpacked u; struct bkey_i_alloc *a; - u16 *dst_sectors, orig_sectors; int ret; ret = trans_get_key(trans, BTREE_ID_ALLOC, POS(p.ptr.dev, PTR_BUCKET_NR(ca, &p.ptr)), - &iter, &k); + &iter, &k_a); if (ret < 0) return ret; - if (!ret && unlikely(!test_bit(BCH_FS_ALLOC_WRITTEN, &c->flags))) { + if (k_a.k->type != KEY_TYPE_alloc || + (!ret && unlikely(!test_bit(BCH_FS_ALLOC_WRITTEN, &c->flags)))) { /* * During journal replay, and if gc repairs alloc info at * runtime, the alloc info in the btree might not be up to date - * yet - so, trust the in memory mark: + * yet - so, trust the in memory mark - unless we're already + * updating that key: */ struct bucket *g; struct bucket_mark m; @@ -1467,52 +1521,13 @@ static int bch2_trans_mark_pointer(struct btree_trans *trans, u = alloc_mem_to_key(g, m); percpu_up_read(&c->mark_lock); } else { - /* - * Unless we're already updating that key: - */ - if (k.k->type != KEY_TYPE_alloc) { - bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, - "pointer to nonexistent bucket %llu:%llu", - iter->pos.inode, iter->pos.offset); - ret = -1; - goto out; - } - - u = bch2_alloc_unpack(k); - } - - if (gen_after(u.gen, p.ptr.gen)) { - ret = 1; - goto out; + u = bch2_alloc_unpack(k_a); } - if (u.data_type && u.data_type != data_type) { - bch2_fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, - "bucket %llu:%llu gen %u different types of data in same bucket: %s, %s", - iter->pos.inode, iter->pos.offset, - u.gen, - bch2_data_types[u.data_type], - bch2_data_types[data_type]); - ret = -1; - goto out; - } - - dst_sectors = !p.ptr.cached - ? &u.dirty_sectors - : &u.cached_sectors; - orig_sectors = *dst_sectors; - - if (checked_add(*dst_sectors, sectors)) { - bch2_fs_inconsistent(c, - "bucket sector count overflow: %u + %lli > U16_MAX", - orig_sectors, sectors); - /* return an error indicating that we need full fsck */ - ret = -EIO; + ret = __mark_pointer(c, k, p, sectors, data_type, u.gen, &u.data_type, + &u.dirty_sectors, &u.cached_sectors); + if (ret) goto out; - } - - u.data_type = u.dirty_sectors || u.cached_sectors - ? data_type : 0; a = bch2_trans_kmalloc(trans, BKEY_ALLOC_U64s_MAX * 8); ret = PTR_ERR_OR_ZERO(a); @@ -1597,7 +1612,7 @@ static int bch2_trans_mark_extent(struct btree_trans *trans, ? sectors : ptr_disk_sectors_delta(p, offset, sectors, flags); - ret = bch2_trans_mark_pointer(trans, p, disk_sectors, + ret = bch2_trans_mark_pointer(trans, k, p, disk_sectors, data_type); if (ret < 0) return ret; diff --git a/libbcachefs/buckets.h b/libbcachefs/buckets.h index 765650ce..97265fe9 100644 --- a/libbcachefs/buckets.h +++ b/libbcachefs/buckets.h @@ -259,8 +259,6 @@ void bch2_mark_metadata_bucket(struct bch_fs *, struct bch_dev *, size_t, enum bch_data_type, unsigned, struct gc_pos, unsigned); -int bch2_mark_key_locked(struct bch_fs *, struct bkey_s_c, unsigned, s64, - struct bch_fs_usage *, u64, unsigned); int bch2_mark_key(struct bch_fs *, struct bkey_s_c, unsigned, s64, struct bch_fs_usage *, u64, unsigned); int bch2_fs_usage_apply(struct bch_fs *, struct bch_fs_usage *, diff --git a/libbcachefs/clock.c b/libbcachefs/clock.c index d9de0d13..a9f5d569 100644 --- a/libbcachefs/clock.c +++ b/libbcachefs/clock.c @@ -162,7 +162,7 @@ ssize_t bch2_io_timers_show(struct io_clock *clock, char *buf) now = atomic_long_read(&clock->now); for (i = 0; i < clock->timers.used; i++) - pr_buf(&out, "%pf:\t%li\n", + pr_buf(&out, "%ps:\t%li\n", clock->timers.data[i]->fn, clock->timers.data[i]->expire - now); spin_unlock(&clock->timer_lock); diff --git a/libbcachefs/compress.c b/libbcachefs/compress.c index c56938f2..3d75527d 100644 --- a/libbcachefs/compress.c +++ b/libbcachefs/compress.c @@ -7,6 +7,7 @@ #include "super-io.h" #include <linux/lz4.h> +#include <linux/sched/mm.h> #include <linux/zlib.h> #include <linux/zstd.h> @@ -63,7 +64,7 @@ static struct bbuf __bio_map_or_bounce(struct bch_fs *c, struct bio *bio, struct bbuf ret; struct bio_vec bv; struct bvec_iter iter; - unsigned nr_pages = 0; + unsigned nr_pages = 0, flags; struct page *stack_pages[16]; struct page **pages = NULL; void *data; @@ -103,7 +104,10 @@ static struct bbuf __bio_map_or_bounce(struct bch_fs *c, struct bio *bio, __bio_for_each_segment(bv, bio, iter, start) pages[nr_pages++] = bv.bv_page; + flags = memalloc_nofs_save(); data = vmap(pages, nr_pages, VM_MAP, PAGE_KERNEL); + memalloc_nofs_restore(flags); + if (pages != stack_pages) kfree(pages); @@ -603,7 +607,7 @@ have_compressed: } if (!mempool_initialized(&c->decompress_workspace)) { - ret = mempool_init_kmalloc_pool( + ret = mempool_init_kvpmalloc_pool( &c->decompress_workspace, 1, decompress_workspace_size); if (ret) diff --git a/libbcachefs/dirent.c b/libbcachefs/dirent.c index ae5c9fd8..f34bfda8 100644 --- a/libbcachefs/dirent.c +++ b/libbcachefs/dirent.c @@ -104,7 +104,7 @@ void bch2_dirent_to_text(struct printbuf *out, struct bch_fs *c, bch_scnmemcpy(out, d.v->d_name, bch2_dirent_name_bytes(d)); - pr_buf(out, " -> %llu", d.v->d_inum); + pr_buf(out, " -> %llu type %u", d.v->d_inum, d.v->d_type); } static struct bkey_i_dirent *dirent_create_key(struct btree_trans *trans, diff --git a/libbcachefs/ec.c b/libbcachefs/ec.c index 933945b6..9442d6e4 100644 --- a/libbcachefs/ec.c +++ b/libbcachefs/ec.c @@ -1273,38 +1273,28 @@ int bch2_stripes_write(struct bch_fs *c, unsigned flags, bool *wrote) return ret; } -int bch2_stripes_read(struct bch_fs *c, struct journal_keys *journal_keys) +static int bch2_stripes_read_fn(struct bch_fs *c, enum btree_id id, + unsigned level, struct bkey_s_c k) { - struct btree_trans trans; - struct btree_and_journal_iter iter; - struct bkey_s_c k; - int ret; - - ret = bch2_fs_ec_start(c); - if (ret) - return ret; - - bch2_trans_init(&trans, c, 0, 0); - - bch2_btree_and_journal_iter_init(&iter, &trans, journal_keys, - BTREE_ID_EC, POS_MIN); - + int ret = 0; - while ((k = bch2_btree_and_journal_iter_peek(&iter)).k) { - bch2_mark_key(c, k, 0, 0, NULL, 0, - BTREE_TRIGGER_ALLOC_READ| - BTREE_TRIGGER_NOATOMIC); + if (k.k->type == KEY_TYPE_stripe) + ret = __ec_stripe_mem_alloc(c, k.k->p.offset, GFP_KERNEL) ?: + bch2_mark_key(c, k, 0, 0, NULL, 0, + BTREE_TRIGGER_ALLOC_READ| + BTREE_TRIGGER_NOATOMIC); - bch2_btree_and_journal_iter_advance(&iter); - } + return ret; +} - ret = bch2_trans_exit(&trans) ?: ret; - if (ret) { +int bch2_stripes_read(struct bch_fs *c, struct journal_keys *journal_keys) +{ + int ret = bch2_btree_and_journal_walk(c, journal_keys, BTREE_ID_EC, + NULL, bch2_stripes_read_fn); + if (ret) bch_err(c, "error reading stripes: %i", ret); - return ret; - } - return 0; + return ret; } int bch2_ec_mem_alloc(struct bch_fs *c, bool gc) @@ -1343,11 +1333,6 @@ int bch2_ec_mem_alloc(struct bch_fs *c, bool gc) return 0; } -int bch2_fs_ec_start(struct bch_fs *c) -{ - return bch2_ec_mem_alloc(c, false); -} - void bch2_fs_ec_exit(struct bch_fs *c) { struct ec_stripe_head *h; diff --git a/libbcachefs/ec.h b/libbcachefs/ec.h index cf67abd4..4dfaac03 100644 --- a/libbcachefs/ec.h +++ b/libbcachefs/ec.h @@ -157,8 +157,6 @@ int bch2_stripes_write(struct bch_fs *, unsigned, bool *); int bch2_ec_mem_alloc(struct bch_fs *, bool); -int bch2_fs_ec_start(struct bch_fs *); - void bch2_fs_ec_exit(struct bch_fs *); int bch2_fs_ec_init(struct bch_fs *); diff --git a/libbcachefs/error.c b/libbcachefs/error.c index 5a5cfee6..1662a362 100644 --- a/libbcachefs/error.c +++ b/libbcachefs/error.c @@ -85,7 +85,7 @@ enum fsck_err_ret bch2_fsck_err(struct bch_fs *c, unsigned flags, if (s->fmt == fmt) goto found; - s = kzalloc(sizeof(*s), GFP_KERNEL); + s = kzalloc(sizeof(*s), GFP_NOFS); if (!s) { if (!c->fsck_alloc_err) bch_err(c, "kmalloc err, cannot ratelimit fsck errs"); diff --git a/libbcachefs/error.h b/libbcachefs/error.h index de319794..94b53312 100644 --- a/libbcachefs/error.h +++ b/libbcachefs/error.h @@ -102,6 +102,7 @@ struct fsck_err_state { #define FSCK_CAN_IGNORE (1 << 1) #define FSCK_NEED_FSCK (1 << 2) +__printf(3, 4) __cold enum fsck_err_ret bch2_fsck_err(struct bch_fs *, unsigned, const char *, ...); void bch2_flush_fsck_errs(struct bch_fs *); diff --git a/libbcachefs/extents.c b/libbcachefs/extents.c index d1a4ab04..251d4af7 100644 --- a/libbcachefs/extents.c +++ b/libbcachefs/extents.c @@ -220,7 +220,7 @@ void bch2_btree_ptr_v2_to_text(struct printbuf *out, struct bch_fs *c, { struct bkey_s_c_btree_ptr_v2 bp = bkey_s_c_to_btree_ptr_v2(k); - pr_buf(out, "seq %llu sectors %u written %u min_key ", + pr_buf(out, "seq %llx sectors %u written %u min_key ", le64_to_cpu(bp.v->seq), le16_to_cpu(bp.v->sectors), le16_to_cpu(bp.v->sectors_written)); diff --git a/libbcachefs/fs-io.c b/libbcachefs/fs-io.c index 7de61f7f..b53eaa82 100644 --- a/libbcachefs/fs-io.c +++ b/libbcachefs/fs-io.c @@ -845,7 +845,7 @@ retry: sectors = k.k->size - offset_into_extent; ret = bch2_read_indirect_extent(trans, - &offset_into_extent, sk.k); + &offset_into_extent, &sk); if (ret) break; @@ -2844,6 +2844,9 @@ loff_t bch2_remap_file_range(struct file *file_src, loff_t pos_src, u64 aligned_len; loff_t ret = 0; + if (!c->opts.reflink) + return -EOPNOTSUPP; + if (remap_flags & ~(REMAP_FILE_DEDUP|REMAP_FILE_ADVISORY)) return -EINVAL; diff --git a/libbcachefs/fs.c b/libbcachefs/fs.c index 1c89a1b2..30446c1c 100644 --- a/libbcachefs/fs.c +++ b/libbcachefs/fs.c @@ -889,7 +889,7 @@ retry: sectors = k.k->size - offset_into_extent; ret = bch2_read_indirect_extent(&trans, - &offset_into_extent, cur.k); + &offset_into_extent, &cur); if (ret) break; diff --git a/libbcachefs/fsck.c b/libbcachefs/fsck.c index 3ab621c6..c6ca5968 100644 --- a/libbcachefs/fsck.c +++ b/libbcachefs/fsck.c @@ -1169,7 +1169,7 @@ static int check_inode_nlink(struct bch_fs *c, } if (!S_ISDIR(u->bi_mode) && link->dir_count) { - need_fsck_err(c, "non directory with subdirectories", + need_fsck_err(c, "non directory with subdirectories (inum %llu)", u->bi_inum); return 0; } diff --git a/libbcachefs/io.c b/libbcachefs/io.c index 5801a036..4f39132d 100644 --- a/libbcachefs/io.c +++ b/libbcachefs/io.c @@ -1641,7 +1641,7 @@ retry: sectors = k.k->size - offset_into_extent; ret = bch2_read_indirect_extent(&trans, - &offset_into_extent, sk.k); + &offset_into_extent, &sk); if (ret) break; @@ -1943,14 +1943,14 @@ static void bch2_read_endio(struct bio *bio) int __bch2_read_indirect_extent(struct btree_trans *trans, unsigned *offset_into_extent, - struct bkey_i *orig_k) + struct bkey_on_stack *orig_k) { struct btree_iter *iter; struct bkey_s_c k; u64 reflink_offset; int ret; - reflink_offset = le64_to_cpu(bkey_i_to_reflink_p(orig_k)->v.idx) + + reflink_offset = le64_to_cpu(bkey_i_to_reflink_p(orig_k->k)->v.idx) + *offset_into_extent; iter = bch2_trans_get_iter(trans, BTREE_ID_REFLINK, @@ -1973,7 +1973,7 @@ int __bch2_read_indirect_extent(struct btree_trans *trans, } *offset_into_extent = iter->pos.offset - bkey_start_offset(k.k); - bkey_reassemble(orig_k, k); + bkey_on_stack_reassemble(orig_k, trans->c, k); err: bch2_trans_iter_put(trans, iter); return ret; @@ -2273,7 +2273,7 @@ retry: k = bkey_i_to_s_c(sk.k); ret = bch2_read_indirect_extent(&trans, - &offset_into_extent, sk.k); + &offset_into_extent, &sk); if (ret) goto err; diff --git a/libbcachefs/io.h b/libbcachefs/io.h index c4c84730..8814a8fb 100644 --- a/libbcachefs/io.h +++ b/libbcachefs/io.h @@ -3,6 +3,7 @@ #define _BCACHEFS_IO_H #include "checksum.h" +#include "bkey_on_stack.h" #include "io_types.h" #define to_wbio(_bio) \ @@ -110,13 +111,13 @@ struct cache_promote_op; struct extent_ptr_decoded; int __bch2_read_indirect_extent(struct btree_trans *, unsigned *, - struct bkey_i *); + struct bkey_on_stack *); static inline int bch2_read_indirect_extent(struct btree_trans *trans, unsigned *offset_into_extent, - struct bkey_i *k) + struct bkey_on_stack *k) { - return k->k.type == KEY_TYPE_reflink_p + return k->k->k.type == KEY_TYPE_reflink_p ? __bch2_read_indirect_extent(trans, offset_into_extent, k) : 0; } diff --git a/libbcachefs/journal.c b/libbcachefs/journal.c index 0a4538b3..17dc60d9 100644 --- a/libbcachefs/journal.c +++ b/libbcachefs/journal.c @@ -959,15 +959,12 @@ void bch2_dev_journal_stop(struct journal *j, struct bch_dev *ca) void bch2_fs_journal_stop(struct journal *j) { - struct bch_fs *c = container_of(j, struct bch_fs, journal); - bch2_journal_flush_all_pins(j); wait_event(j->wait, journal_entry_close(j)); /* do we need to write another journal entry? */ - if (test_bit(JOURNAL_NOT_EMPTY, &j->flags) || - c->btree_roots_dirty) + if (test_bit(JOURNAL_NOT_EMPTY, &j->flags)) bch2_journal_meta(j); journal_quiesce(j); @@ -1238,14 +1235,14 @@ ssize_t bch2_journal_print_pins(struct journal *j, char *buf) i, atomic_read(&pin_list->count)); list_for_each_entry(pin, &pin_list->list, list) - pr_buf(&out, "\t%p %pf\n", + pr_buf(&out, "\t%px %ps\n", pin, pin->flush); if (!list_empty(&pin_list->flushed)) pr_buf(&out, "flushed:\n"); list_for_each_entry(pin, &pin_list->flushed, list) - pr_buf(&out, "\t%p %pf\n", + pr_buf(&out, "\t%px %ps\n", pin, pin->flush); } spin_unlock(&j->lock); diff --git a/libbcachefs/journal.h b/libbcachefs/journal.h index 78f5fac0..997a28ae 100644 --- a/libbcachefs/journal.h +++ b/libbcachefs/journal.h @@ -199,27 +199,39 @@ bch2_journal_add_entry_noreservation(struct journal_buf *buf, size_t u64s) return entry; } +static inline struct jset_entry * +journal_res_entry(struct journal *j, struct journal_res *res) +{ + return vstruct_idx(j->buf[res->idx].data, res->offset); +} + +static inline unsigned journal_entry_set(struct jset_entry *entry, unsigned type, + enum btree_id id, unsigned level, + const void *data, unsigned u64s) +{ + memset(entry, 0, sizeof(*entry)); + entry->u64s = cpu_to_le16(u64s); + entry->type = type; + entry->btree_id = id; + entry->level = level; + memcpy_u64s_small(entry->_data, data, u64s); + + return jset_u64s(u64s); +} + static inline void bch2_journal_add_entry(struct journal *j, struct journal_res *res, unsigned type, enum btree_id id, unsigned level, const void *data, unsigned u64s) { - struct journal_buf *buf = &j->buf[res->idx]; - struct jset_entry *entry = vstruct_idx(buf->data, res->offset); - unsigned actual = jset_u64s(u64s); + unsigned actual = journal_entry_set(journal_res_entry(j, res), + type, id, level, data, u64s); EBUG_ON(!res->ref); EBUG_ON(actual > res->u64s); res->offset += actual; res->u64s -= actual; - - memset(entry, 0, sizeof(*entry)); - entry->u64s = cpu_to_le16(u64s); - entry->type = type; - entry->btree_id = id; - entry->level = level; - memcpy_u64s(entry->_data, data, u64s); } static inline void bch2_journal_add_keys(struct journal *j, struct journal_res *res, diff --git a/libbcachefs/journal_io.c b/libbcachefs/journal_io.c index 39bb2154..b923efc4 100644 --- a/libbcachefs/journal_io.c +++ b/libbcachefs/journal_io.c @@ -2,6 +2,7 @@ #include "bcachefs.h" #include "alloc_foreground.h" #include "btree_io.h" +#include "btree_update_interior.h" #include "buckets.h" #include "checksum.h" #include "error.h" @@ -993,8 +994,23 @@ void bch2_journal_write(struct closure *cl) j->write_start_time = local_clock(); - start = vstruct_last(jset); - end = bch2_journal_super_entries_add_common(c, start, + /* + * New btree roots are set by journalling them; when the journal entry + * gets written we have to propagate them to c->btree_roots + * + * But, every journal entry we write has to contain all the btree roots + * (at least for now); so after we copy btree roots to c->btree_roots we + * have to get any missing btree roots and add them to this journal + * entry: + */ + + bch2_journal_entries_to_btree_roots(c, jset); + + start = end = vstruct_last(jset); + + end = bch2_btree_roots_to_journal_entries(c, jset->start, end); + + end = bch2_journal_super_entries_add_common(c, end, le64_to_cpu(jset->seq)); u64s = (u64 *) end - (u64 *) start; BUG_ON(u64s > j->entry_u64s_reserved); diff --git a/libbcachefs/journal_reclaim.c b/libbcachefs/journal_reclaim.c index d34434f6..5b3f2548 100644 --- a/libbcachefs/journal_reclaim.c +++ b/libbcachefs/journal_reclaim.c @@ -330,7 +330,7 @@ static void bch2_journal_pin_add_locked(struct journal *j, u64 seq, __journal_pin_drop(j, pin); - BUG_ON(!atomic_read(&pin_list->count)); + BUG_ON(!atomic_read(&pin_list->count) && seq == journal_last_seq(j)); atomic_inc(&pin_list->count); pin->seq = seq; @@ -413,10 +413,12 @@ journal_get_next_pin(struct journal *j, u64 max_seq, u64 *seq) return ret; } -static void journal_flush_pins(struct journal *j, u64 seq_to_flush, +/* returns true if we did work */ +static bool journal_flush_pins(struct journal *j, u64 seq_to_flush, unsigned min_nr) { struct journal_entry_pin *pin; + bool ret = false; u64 seq; lockdep_assert_held(&j->reclaim_lock); @@ -431,7 +433,10 @@ static void journal_flush_pins(struct journal *j, u64 seq_to_flush, BUG_ON(j->flush_in_progress != pin); j->flush_in_progress = NULL; wake_up(&j->pin_flush_wait); + ret = true; } + + return ret; } /** @@ -523,7 +528,8 @@ void bch2_journal_reclaim_work(struct work_struct *work) mutex_unlock(&j->reclaim_lock); } -static int journal_flush_done(struct journal *j, u64 seq_to_flush) +static int journal_flush_done(struct journal *j, u64 seq_to_flush, + bool *did_work) { int ret; @@ -533,7 +539,7 @@ static int journal_flush_done(struct journal *j, u64 seq_to_flush) mutex_lock(&j->reclaim_lock); - journal_flush_pins(j, seq_to_flush, 0); + *did_work = journal_flush_pins(j, seq_to_flush, 0); spin_lock(&j->lock); /* @@ -551,12 +557,17 @@ static int journal_flush_done(struct journal *j, u64 seq_to_flush) return ret; } -void bch2_journal_flush_pins(struct journal *j, u64 seq_to_flush) +bool bch2_journal_flush_pins(struct journal *j, u64 seq_to_flush) { + bool did_work = false; + if (!test_bit(JOURNAL_STARTED, &j->flags)) - return; + return false; + + closure_wait_event(&j->async_wait, + journal_flush_done(j, seq_to_flush, &did_work)); - closure_wait_event(&j->async_wait, journal_flush_done(j, seq_to_flush)); + return did_work; } int bch2_journal_flush_device_pins(struct journal *j, int dev_idx) diff --git a/libbcachefs/journal_reclaim.h b/libbcachefs/journal_reclaim.h index 883a0a56..272ba8a3 100644 --- a/libbcachefs/journal_reclaim.h +++ b/libbcachefs/journal_reclaim.h @@ -38,7 +38,7 @@ static inline void bch2_journal_pin_add(struct journal *j, u64 seq, struct journal_entry_pin *pin, journal_pin_flush_fn flush_fn) { - if (unlikely(!journal_pin_active(pin))) + if (unlikely(!journal_pin_active(pin) || pin->seq > seq)) __bch2_journal_pin_add(j, seq, pin, flush_fn); } @@ -53,11 +53,11 @@ void bch2_journal_do_discards(struct journal *); void bch2_journal_reclaim(struct journal *); void bch2_journal_reclaim_work(struct work_struct *); -void bch2_journal_flush_pins(struct journal *, u64); +bool bch2_journal_flush_pins(struct journal *, u64); -static inline void bch2_journal_flush_all_pins(struct journal *j) +static inline bool bch2_journal_flush_all_pins(struct journal *j) { - bch2_journal_flush_pins(j, U64_MAX); + return bch2_journal_flush_pins(j, U64_MAX); } int bch2_journal_flush_device_pins(struct journal *, int); diff --git a/libbcachefs/keylist.c b/libbcachefs/keylist.c index 5da54ced..864dfaa6 100644 --- a/libbcachefs/keylist.c +++ b/libbcachefs/keylist.c @@ -6,7 +6,7 @@ int bch2_keylist_realloc(struct keylist *l, u64 *inline_u64s, size_t nr_inline_u64s, size_t new_u64s) { - size_t oldsize = bch_keylist_u64s(l); + size_t oldsize = bch2_keylist_u64s(l); size_t newsize = oldsize + new_u64s; u64 *old_buf = l->keys_p == inline_u64s ? NULL : l->keys_p; u64 *new_keys; @@ -52,7 +52,7 @@ void bch2_keylist_pop_front(struct keylist *l) memmove_u64s_down(l->keys, bkey_next(l->keys), - bch_keylist_u64s(l)); + bch2_keylist_u64s(l)); } #ifdef CONFIG_BCACHEFS_DEBUG diff --git a/libbcachefs/keylist.h b/libbcachefs/keylist.h index a7ff86b0..195799bb 100644 --- a/libbcachefs/keylist.h +++ b/libbcachefs/keylist.h @@ -36,14 +36,14 @@ static inline bool bch2_keylist_empty(struct keylist *l) return l->top == l->keys; } -static inline size_t bch_keylist_u64s(struct keylist *l) +static inline size_t bch2_keylist_u64s(struct keylist *l) { return l->top_p - l->keys_p; } static inline size_t bch2_keylist_bytes(struct keylist *l) { - return bch_keylist_u64s(l) * sizeof(u64); + return bch2_keylist_u64s(l) * sizeof(u64); } static inline struct bkey_i *bch2_keylist_front(struct keylist *l) diff --git a/libbcachefs/migrate.c b/libbcachefs/migrate.c index e26fa160..96c8690a 100644 --- a/libbcachefs/migrate.c +++ b/libbcachefs/migrate.c @@ -151,15 +151,8 @@ retry: } /* flush relevant btree updates */ - while (1) { - closure_wait_event(&c->btree_interior_update_wait, - !bch2_btree_interior_updates_nr_pending(c) || - c->btree_roots_dirty); - if (c->btree_roots_dirty) - bch2_journal_meta(&c->journal); - if (!bch2_btree_interior_updates_nr_pending(c)) - break; - } + closure_wait_event(&c->btree_interior_update_wait, + !bch2_btree_interior_updates_nr_pending(c)); ret = 0; err: diff --git a/libbcachefs/move.c b/libbcachefs/move.c index 67e495bc..11a92c09 100644 --- a/libbcachefs/move.c +++ b/libbcachefs/move.c @@ -775,14 +775,8 @@ int bch2_data_job(struct bch_fs *c, ret = bch2_move_btree(c, rereplicate_pred, c, stats) ?: ret; - while (1) { - closure_wait_event(&c->btree_interior_update_wait, - !bch2_btree_interior_updates_nr_pending(c) || - c->btree_roots_dirty); - if (!bch2_btree_interior_updates_nr_pending(c)) - break; - bch2_journal_meta(&c->journal); - } + closure_wait_event(&c->btree_interior_update_wait, + !bch2_btree_interior_updates_nr_pending(c)); ret = bch2_replicas_gc2(c) ?: ret; diff --git a/libbcachefs/opts.h b/libbcachefs/opts.h index ba490335..71ebace7 100644 --- a/libbcachefs/opts.h +++ b/libbcachefs/opts.h @@ -207,6 +207,11 @@ enum opt_type { OPT_BOOL(), \ BCH_SB_PRJQUOTA, false, \ NULL, "Enable project quotas") \ + x(reflink, u8, \ + OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \ + OPT_BOOL(), \ + BCH_SB_REFLINK, true, \ + NULL, "Enable reflink support") \ x(degraded, u8, \ OPT_MOUNT, \ OPT_BOOL(), \ diff --git a/libbcachefs/recovery.c b/libbcachefs/recovery.c index a4d0eec2..a94f25cc 100644 --- a/libbcachefs/recovery.c +++ b/libbcachefs/recovery.c @@ -191,6 +191,78 @@ void bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *i b->btree_id, b->level, b->data->min_key); } +/* Walk btree, overlaying keys from the journal: */ + +static int bch2_btree_and_journal_walk_recurse(struct bch_fs *c, struct btree *b, + struct journal_keys *journal_keys, + enum btree_id btree_id, + btree_walk_node_fn node_fn, + btree_walk_key_fn key_fn) +{ + struct btree_and_journal_iter iter; + struct bkey_s_c k; + int ret = 0; + + bch2_btree_and_journal_iter_init_node_iter(&iter, journal_keys, b); + + while ((k = bch2_btree_and_journal_iter_peek(&iter)).k) { + ret = key_fn(c, btree_id, b->level, k); + if (ret) + break; + + if (b->level) { + struct btree *child; + BKEY_PADDED(k) tmp; + + bkey_reassemble(&tmp.k, k); + k = bkey_i_to_s_c(&tmp.k); + + bch2_btree_and_journal_iter_advance(&iter); + + if (b->level > 0) { + child = bch2_btree_node_get_noiter(c, &tmp.k, + b->btree_id, b->level - 1); + ret = PTR_ERR_OR_ZERO(child); + if (ret) + break; + + ret = (node_fn ? node_fn(c, b) : 0) ?: + bch2_btree_and_journal_walk_recurse(c, child, + journal_keys, btree_id, node_fn, key_fn); + six_unlock_read(&child->lock); + + if (ret) + break; + } + } else { + bch2_btree_and_journal_iter_advance(&iter); + } + } + + return ret; +} + +int bch2_btree_and_journal_walk(struct bch_fs *c, struct journal_keys *journal_keys, + enum btree_id btree_id, + btree_walk_node_fn node_fn, + btree_walk_key_fn key_fn) +{ + struct btree *b = c->btree_roots[btree_id].b; + int ret = 0; + + if (btree_node_fake(b)) + return 0; + + six_lock_read(&b->lock); + ret = (node_fn ? node_fn(c, b) : 0) ?: + bch2_btree_and_journal_walk_recurse(c, b, journal_keys, btree_id, + node_fn, key_fn) ?: + key_fn(c, btree_id, b->level + 1, bkey_i_to_s_c(&b->key)); + six_unlock_read(&b->lock); + + return ret; +} + /* sort and dedup all keys in the journal: */ void bch2_journal_entries_free(struct list_head *list) @@ -691,6 +763,7 @@ static int verify_superblock_clean(struct bch_fs *c, "superblock read clock doesn't match journal after clean shutdown"); for (i = 0; i < BTREE_ID_NR; i++) { + char buf1[200], buf2[200]; struct bkey_i *k1, *k2; unsigned l1 = 0, l2 = 0; @@ -706,7 +779,11 @@ static int verify_superblock_clean(struct bch_fs *c, k1->k.u64s != k2->k.u64s || memcmp(k1, k2, bkey_bytes(k1)) || l1 != l2, c, - "superblock btree root doesn't match journal after clean shutdown"); + "superblock btree root %u doesn't match journal after clean shutdown\n" + "sb: l=%u %s\n" + "journal: l=%u %s\n", i, + l1, (bch2_bkey_val_to_text(&PBUF(buf1), c, bkey_i_to_s_c(k1)), buf1), + l2, (bch2_bkey_val_to_text(&PBUF(buf2), c, bkey_i_to_s_c(k2)), buf2)); } fsck_err: return ret; @@ -1077,6 +1154,15 @@ int bch2_fs_initialize(struct bch_fs *c) bch2_mark_dev_superblock(c, ca, 0); mutex_unlock(&c->sb_lock); + mutex_lock(&c->sb_lock); + c->disk_sb.sb->version = c->disk_sb.sb->version_min = + le16_to_cpu(bcachefs_metadata_version_current); + c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_atomic_nlink; + c->disk_sb.sb->features[0] |= BCH_SB_FEATURES_ALL; + + bch2_write_super(c); + mutex_unlock(&c->sb_lock); + set_bit(BCH_FS_ALLOC_READ_DONE, &c->flags); set_bit(BCH_FS_INITIAL_GC_DONE, &c->flags); @@ -1135,11 +1221,6 @@ int bch2_fs_initialize(struct bch_fs *c) goto err; mutex_lock(&c->sb_lock); - c->disk_sb.sb->version = c->disk_sb.sb->version_min = - le16_to_cpu(bcachefs_metadata_version_current); - c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_atomic_nlink; - c->disk_sb.sb->features[0] |= BCH_SB_FEATURES_ALL; - SET_BCH_SB_INITIALIZED(c->disk_sb.sb, true); SET_BCH_SB_CLEAN(c->disk_sb.sb, false); diff --git a/libbcachefs/recovery.h b/libbcachefs/recovery.h index 19f2f172..a66827c9 100644 --- a/libbcachefs/recovery.h +++ b/libbcachefs/recovery.h @@ -44,6 +44,13 @@ void bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *, struct journal_keys *, struct btree *); +typedef int (*btree_walk_node_fn)(struct bch_fs *c, struct btree *b); +typedef int (*btree_walk_key_fn)(struct bch_fs *c, enum btree_id id, + unsigned level, struct bkey_s_c k); + +int bch2_btree_and_journal_walk(struct bch_fs *, struct journal_keys *, enum btree_id, + btree_walk_node_fn, btree_walk_key_fn); + void bch2_journal_keys_free(struct journal_keys *); void bch2_journal_entries_free(struct list_head *); diff --git a/libbcachefs/reflink.c b/libbcachefs/reflink.c index 2f223be7..3c473f13 100644 --- a/libbcachefs/reflink.c +++ b/libbcachefs/reflink.c @@ -167,6 +167,9 @@ s64 bch2_remap_range(struct bch_fs *c, u64 src_done, dst_done; int ret = 0, ret2 = 0; + if (!c->opts.reflink) + return -EOPNOTSUPP; + if (!percpu_ref_tryget(&c->writes)) return -EROFS; diff --git a/libbcachefs/super-io.c b/libbcachefs/super-io.c index 6596764c..f2be64c8 100644 --- a/libbcachefs/super-io.c +++ b/libbcachefs/super-io.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include "bcachefs.h" +#include "btree_update_interior.h" #include "buckets.h" #include "checksum.h" #include "disk_groups.h" @@ -955,7 +956,6 @@ int bch2_fs_mark_dirty(struct bch_fs *c) mutex_lock(&c->sb_lock); SET_BCH_SB_CLEAN(c->disk_sb.sb, false); - c->disk_sb.sb->compat[0] &= ~(1ULL << BCH_COMPAT_FEAT_ALLOC_METADATA); c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_new_extent_overwrite; c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_extents_above_btree_updates; c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_btree_updates_journalled; @@ -989,27 +989,8 @@ bch2_journal_super_entries_add_common(struct bch_fs *c, struct jset_entry *entry, u64 journal_seq) { - struct btree_root *r; unsigned i; - mutex_lock(&c->btree_root_lock); - - for (r = c->btree_roots; - r < c->btree_roots + BTREE_ID_NR; - r++) - if (r->alive) { - entry_init_u64s(entry, r->key.u64s + 1); - entry->btree_id = r - c->btree_roots; - entry->level = r->level; - entry->type = BCH_JSET_ENTRY_btree_root; - bkey_copy(&entry->start[0], &r->key); - - entry = vstruct_next(entry); - } - c->btree_roots_dirty = false; - - mutex_unlock(&c->btree_root_lock); - percpu_down_write(&c->mark_lock); if (!journal_seq) { @@ -1110,6 +1091,7 @@ void bch2_fs_mark_clean(struct bch_fs *c) entry = sb_clean->start; entry = bch2_journal_super_entries_add_common(c, entry, 0); + entry = bch2_btree_roots_to_journal_entries(c, entry, entry); BUG_ON((void *) entry > vstruct_end(&sb_clean->field)); memset(entry, 0, diff --git a/libbcachefs/super.c b/libbcachefs/super.c index d3473897..f14fe55f 100644 --- a/libbcachefs/super.c +++ b/libbcachefs/super.c @@ -207,7 +207,7 @@ int bch2_congested(void *data, int bdi_bits) static void __bch2_fs_read_only(struct bch_fs *c) { struct bch_dev *ca; - bool wrote; + bool wrote = false; unsigned i, clean_passes = 0; int ret; @@ -224,48 +224,68 @@ static void __bch2_fs_read_only(struct bch_fs *c) */ bch2_journal_flush_all_pins(&c->journal); + /* + * If the allocator threads didn't all start up, the btree updates to + * write out alloc info aren't going to work: + */ if (!test_bit(BCH_FS_ALLOCATOR_RUNNING, &c->flags)) - goto allocator_not_running; + goto nowrote_alloc; - do { - wrote = false; + bch_verbose(c, "writing alloc info"); + /* + * This should normally just be writing the bucket read/write clocks: + */ + ret = bch2_stripes_write(c, BTREE_INSERT_NOCHECK_RW, &wrote) ?: + bch2_alloc_write(c, BTREE_INSERT_NOCHECK_RW, &wrote); + bch_verbose(c, "writing alloc info complete"); - ret = bch2_stripes_write(c, BTREE_INSERT_NOCHECK_RW, &wrote) ?: - bch2_alloc_write(c, BTREE_INSERT_NOCHECK_RW, &wrote); + if (ret && !test_bit(BCH_FS_EMERGENCY_RO, &c->flags)) + bch2_fs_inconsistent(c, "error writing out alloc info %i", ret); - if (ret && !test_bit(BCH_FS_EMERGENCY_RO, &c->flags)) - bch2_fs_inconsistent(c, "error writing out alloc info %i", ret); + if (ret) + goto nowrote_alloc; - if (ret) - break; + bch_verbose(c, "flushing journal and stopping allocators"); - for_each_member_device(ca, c, i) - bch2_dev_allocator_quiesce(c, ca); + bch2_journal_flush_all_pins(&c->journal); + set_bit(BCH_FS_ALLOCATOR_STOPPING, &c->flags); - bch2_journal_flush_all_pins(&c->journal); + do { + clean_passes++; + + if (bch2_journal_flush_all_pins(&c->journal)) + clean_passes = 0; /* - * We need to explicitly wait on btree interior updates to complete - * before stopping the journal, flushing all journal pins isn't - * sufficient, because in the BTREE_INTERIOR_UPDATING_ROOT case btree - * interior updates have to drop their journal pin before they're - * fully complete: + * In flight interior btree updates will generate more journal + * updates and btree updates (alloc btree): */ - closure_wait_event(&c->btree_interior_update_wait, - !bch2_btree_interior_updates_nr_pending(c)); + if (bch2_btree_interior_updates_nr_pending(c)) { + closure_wait_event(&c->btree_interior_update_wait, + !bch2_btree_interior_updates_nr_pending(c)); + clean_passes = 0; + } + flush_work(&c->btree_interior_update_work); - clean_passes = wrote ? 0 : clean_passes + 1; + if (bch2_journal_flush_all_pins(&c->journal)) + clean_passes = 0; } while (clean_passes < 2); -allocator_not_running: + bch_verbose(c, "flushing journal and stopping allocators complete"); + + set_bit(BCH_FS_ALLOC_CLEAN, &c->flags); +nowrote_alloc: + closure_wait_event(&c->btree_interior_update_wait, + !bch2_btree_interior_updates_nr_pending(c)); + flush_work(&c->btree_interior_update_work); + for_each_member_device(ca, c, i) bch2_dev_allocator_stop(ca); clear_bit(BCH_FS_ALLOCATOR_RUNNING, &c->flags); + clear_bit(BCH_FS_ALLOCATOR_STOPPING, &c->flags); bch2_fs_journal_stop(&c->journal); - /* XXX: mark super that alloc info is persistent */ - /* * the journal kicks off btree writes via reclaim - wait for in flight * writes after stopping journal: @@ -338,8 +358,11 @@ void bch2_fs_read_only(struct bch_fs *c) !test_bit(BCH_FS_ERROR, &c->flags) && !test_bit(BCH_FS_EMERGENCY_RO, &c->flags) && test_bit(BCH_FS_STARTED, &c->flags) && - !c->opts.norecovery) + test_bit(BCH_FS_ALLOC_CLEAN, &c->flags) && + !c->opts.norecovery) { + bch_verbose(c, "marking filesystem clean"); bch2_fs_mark_clean(c); + } clear_bit(BCH_FS_RW, &c->flags); } @@ -426,6 +449,8 @@ static int __bch2_fs_read_write(struct bch_fs *c, bool early) if (ret) goto err; + clear_bit(BCH_FS_ALLOC_CLEAN, &c->flags); + for_each_rw_member(ca, c, i) bch2_dev_allocator_add(c, ca); bch2_recalc_capacity(c); @@ -494,6 +519,7 @@ static void bch2_fs_free(struct bch_fs *c) bch2_fs_ec_exit(c); bch2_fs_encryption_exit(c); bch2_fs_io_exit(c); + bch2_fs_btree_interior_update_exit(c); bch2_fs_btree_iter_exit(c); bch2_fs_btree_cache_exit(c); bch2_fs_journal_exit(&c->journal); @@ -511,8 +537,6 @@ static void bch2_fs_free(struct bch_fs *c) mempool_exit(&c->large_bkey_pool); mempool_exit(&c->btree_bounce_pool); bioset_exit(&c->btree_bio); - mempool_exit(&c->btree_interior_update_pool); - mempool_exit(&c->btree_reserve_pool); mempool_exit(&c->fill_iter); percpu_ref_exit(&c->writes); kfree(c->replicas.entries); @@ -675,11 +699,6 @@ static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts) INIT_LIST_HEAD(&c->list); - INIT_LIST_HEAD(&c->btree_interior_update_list); - INIT_LIST_HEAD(&c->btree_interior_updates_unwritten); - mutex_init(&c->btree_reserve_cache_lock); - mutex_init(&c->btree_interior_update_lock); - mutex_init(&c->usage_scratch_lock); mutex_init(&c->bio_bounce_pages_lock); @@ -752,10 +771,6 @@ static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts) WQ_FREEZABLE|WQ_MEM_RECLAIM|WQ_HIGHPRI, 1)) || percpu_ref_init(&c->writes, bch2_writes_disabled, PERCPU_REF_INIT_DEAD, GFP_KERNEL) || - mempool_init_kmalloc_pool(&c->btree_reserve_pool, 1, - sizeof(struct btree_reserve)) || - mempool_init_kmalloc_pool(&c->btree_interior_update_pool, 1, - sizeof(struct btree_update)) || mempool_init_kmalloc_pool(&c->fill_iter, 1, iter_size) || bioset_init(&c->btree_bio, 1, max(offsetof(struct btree_read_bio, bio), @@ -771,6 +786,7 @@ static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts) bch2_fs_replicas_init(c) || bch2_fs_btree_cache_init(c) || bch2_fs_btree_iter_init(c) || + bch2_fs_btree_interior_update_init(c) || bch2_fs_io_init(c) || bch2_fs_encryption_init(c) || bch2_fs_compress_init(c) || diff --git a/libbcachefs/sysfs.c b/libbcachefs/sysfs.c index d78ffcc0..5f2bc933 100644 --- a/libbcachefs/sysfs.c +++ b/libbcachefs/sysfs.c @@ -166,6 +166,7 @@ read_attribute(journal_debug); read_attribute(journal_pins); read_attribute(btree_updates); read_attribute(dirty_btree_nodes); +read_attribute(btree_transactions); read_attribute(internal_uuid); @@ -401,6 +402,12 @@ SHOW(bch2_fs) if (attr == &sysfs_dirty_btree_nodes) return bch2_dirty_btree_nodes_print(c, buf); + if (attr == &sysfs_btree_transactions) { + struct printbuf out = _PBUF(buf, PAGE_SIZE); + + bch2_btree_trans_to_text(&out, c); + return out.pos - buf; + } if (attr == &sysfs_compression_stats) return bch2_compression_stats(c, buf); @@ -571,6 +578,7 @@ struct attribute *bch2_fs_internal_files[] = { &sysfs_journal_pins, &sysfs_btree_updates, &sysfs_dirty_btree_nodes, + &sysfs_btree_transactions, &sysfs_read_realloc_races, &sysfs_extent_migrate_done, diff --git a/linux/six.c b/linux/six.c index c7781235..3d863a9b 100644 --- a/linux/six.c +++ b/linux/six.c @@ -108,7 +108,8 @@ static bool __six_trylock_type(struct six_lock *lock, enum six_lock_type type) if (!do_six_trylock_type(lock, type)) return false; - six_acquire(&lock->dep_map, 1); + if (type != SIX_LOCK_write) + six_acquire(&lock->dep_map, 1); return true; } @@ -130,7 +131,8 @@ static bool __six_relock_type(struct six_lock *lock, enum six_lock_type type, old.v + l[type].lock_val)) != old.v); six_set_owner(lock, type, old); - six_acquire(&lock->dep_map, 1); + if (type != SIX_LOCK_write) + six_acquire(&lock->dep_map, 1); return true; } @@ -323,7 +325,8 @@ static void __six_lock_type_slowpath(struct six_lock *lock, enum six_lock_type t __always_inline static void __six_lock_type(struct six_lock *lock, enum six_lock_type type) { - six_acquire(&lock->dep_map, 0); + if (type != SIX_LOCK_write) + six_acquire(&lock->dep_map, 0); if (!do_six_trylock_type(lock, type)) __six_lock_type_slowpath(lock, type); @@ -382,7 +385,8 @@ static void __six_unlock_type(struct six_lock *lock, enum six_lock_type type) EBUG_ON(type == SIX_LOCK_write && !(lock->state.v & __SIX_LOCK_HELD_intent)); - six_release(&lock->dep_map); + if (type != SIX_LOCK_write) + six_release(&lock->dep_map); if (type == SIX_LOCK_intent) { EBUG_ON(lock->owner != current); diff --git a/linux/workqueue.c b/linux/workqueue.c index 550cfd3b..0d5af3fb 100644 --- a/linux/workqueue.c +++ b/linux/workqueue.c @@ -5,6 +5,7 @@ #include <linux/workqueue.h> static pthread_mutex_t wq_lock = PTHREAD_MUTEX_INITIALIZER; +static pthread_cond_t work_finished = PTHREAD_COND_INITIALIZER; static LIST_HEAD(wq_list); struct workqueue_struct { @@ -13,8 +14,6 @@ struct workqueue_struct { struct work_struct *current_work; struct list_head pending_work; - pthread_cond_t work_finished; - struct task_struct *worker; char name[24]; }; @@ -23,6 +22,11 @@ enum { WORK_PENDING_BIT, }; +static bool work_pending(struct work_struct *work) +{ + return test_bit(WORK_PENDING_BIT, work_data_bits(work)); +} + static void clear_work_pending(struct work_struct *work) { clear_bit(WORK_PENDING_BIT, work_data_bits(work)); @@ -36,7 +40,7 @@ static bool set_work_pending(struct work_struct *work) static void __queue_work(struct workqueue_struct *wq, struct work_struct *work) { - BUG_ON(!test_bit(WORK_PENDING_BIT, work_data_bits(work))); + BUG_ON(!work_pending(work)); BUG_ON(!list_empty(&work->entry)); list_add_tail(&work->entry, &wq->pending_work); @@ -130,17 +134,39 @@ retry: goto retry; } -static bool __flush_work(struct work_struct *work) +static bool work_running(struct work_struct *work) { struct workqueue_struct *wq; - bool ret = false; -retry: + list_for_each_entry(wq, &wq_list, list) - if (wq->current_work == work) { - pthread_cond_wait(&wq->work_finished, &wq_lock); - ret = true; - goto retry; - } + if (wq->current_work == work) + return true; + + return false; +} + +bool flush_work(struct work_struct *work) +{ + bool ret = false; + + pthread_mutex_lock(&wq_lock); + while (work_pending(work) || work_running(work)) { + pthread_cond_wait(&work_finished, &wq_lock); + ret = true; + } + pthread_mutex_unlock(&wq_lock); + + return ret; +} + +static bool __flush_work(struct work_struct *work) +{ + bool ret = false; + + while (work_running(work)) { + pthread_cond_wait(&work_finished, &wq_lock); + ret = true; + } return ret; } @@ -228,7 +254,7 @@ static int worker_thread(void *arg) continue; } - BUG_ON(!test_bit(WORK_PENDING_BIT, work_data_bits(work))); + BUG_ON(!work_pending(work)); list_del_init(&work->entry); clear_work_pending(work); @@ -236,7 +262,7 @@ static int worker_thread(void *arg) work->func(work); pthread_mutex_lock(&wq_lock); - pthread_cond_broadcast(&wq->work_finished); + pthread_cond_broadcast(&work_finished); } pthread_mutex_unlock(&wq_lock); @@ -269,8 +295,6 @@ struct workqueue_struct *alloc_workqueue(const char *fmt, INIT_LIST_HEAD(&wq->list); INIT_LIST_HEAD(&wq->pending_work); - pthread_cond_init(&wq->work_finished, NULL); - va_start(args, max_active); vsnprintf(wq->name, sizeof(wq->name), fmt, args); va_end(args); |