27 	const struct bkey_cached *ck = obj;  in bch2_btree_key_cache_cmp_fn()  local
30 	return ck->key.btree_id != key->btree_id ||  in bch2_btree_key_cache_cmp_fn()
31 		!bpos_eq(ck->key.pos, key->pos);  in bch2_btree_key_cache_cmp_fn()
43 					 struct bkey_cached *ck,  in btree_path_cached_set()  argument
46 	path->l[0].lock_seq	= six_lock_seq(&ck->c.lock);  in btree_path_cached_set()
47 	path->l[0].b		= (void *) ck;  in btree_path_cached_set()
64 static bool bkey_cached_lock_for_evict(struct bkey_cached *ck)  in bkey_cached_lock_for_evict()  argument
66 	if (!six_trylock_intent(&ck->c.lock))  in bkey_cached_lock_for_evict()
69 	if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in bkey_cached_lock_for_evict()
70 		six_unlock_intent(&ck->c.lock);  in bkey_cached_lock_for_evict()
74 	if (!six_trylock_write(&ck->c.lock)) {  in bkey_cached_lock_for_evict()
75 		six_unlock_intent(&ck->c.lock);  in bkey_cached_lock_for_evict()
83 			      struct bkey_cached *ck)  in bkey_cached_evict()  argument
85 	bool ret = !rhashtable_remove_fast(&c->table, &ck->hash,  in bkey_cached_evict()
88 		memset(&ck->key, ~0, sizeof(ck->key));  in bkey_cached_evict()
98 	struct bkey_cached *ck = container_of(rcu, struct bkey_cached, rcu);  in __bkey_cached_free()  local
101 	kmem_cache_free(bch2_key_cache, ck);  in __bkey_cached_free()
105 			     struct bkey_cached *ck)  in bkey_cached_free()  argument
107 	kfree(ck->k);  in bkey_cached_free()
108 	ck->k		= NULL;  in bkey_cached_free()
109 	ck->u64s	= 0;  in bkey_cached_free()
111 	six_unlock_write(&ck->c.lock);  in bkey_cached_free()
112 	six_unlock_intent(&ck->c.lock);  in bkey_cached_free()
114 	bool pcpu_readers = ck->c.lock.readers != NULL;  in bkey_cached_free()
115 	rcu_pending_enqueue(&bc->pending[pcpu_readers], &ck->rcu);  in bkey_cached_free()
123 	struct bkey_cached *ck = kmem_cache_zalloc(bch2_key_cache, gfp);  in __bkey_cached_alloc()  local
124 	if (unlikely(!ck))  in __bkey_cached_alloc()
126 	ck->k = kmalloc(key_u64s * sizeof(u64), gfp);  in __bkey_cached_alloc()
127 	if (unlikely(!ck->k)) {  in __bkey_cached_alloc()
128 		kmem_cache_free(bch2_key_cache, ck);  in __bkey_cached_alloc()
131 	ck->u64s = key_u64s;  in __bkey_cached_alloc()
132 	return ck;  in __bkey_cached_alloc()
143 	struct bkey_cached *ck = container_of_or_null(  in bkey_cached_alloc()  local
146 	if (ck)  in bkey_cached_alloc()
149 	ck = allocate_dropping_locks(trans, ret,  in bkey_cached_alloc()
152 		if (ck)  in bkey_cached_alloc()
153 			kfree(ck->k);  in bkey_cached_alloc()
154 		kmem_cache_free(bch2_key_cache, ck);  in bkey_cached_alloc()
158 	if (ck) {  in bkey_cached_alloc()
159 		bch2_btree_lock_init(&ck->c, pcpu_readers ? SIX_LOCK_INIT_PCPU : 0, GFP_KERNEL);  in bkey_cached_alloc()
160 		ck->c.cached = true;  in bkey_cached_alloc()
164 	ck = container_of_or_null(rcu_pending_dequeue_from_all(&bc->pending[pcpu_readers]),  in bkey_cached_alloc()
166 	if (ck)  in bkey_cached_alloc()
169 	six_lock_intent(&ck->c.lock, NULL, NULL);  in bkey_cached_alloc()
170 	six_lock_write(&ck->c.lock, NULL, NULL);  in bkey_cached_alloc()
171 	return ck;  in bkey_cached_alloc()
179 	struct bkey_cached *ck;  in bkey_cached_reuse()  local
185 		rht_for_each_entry_rcu(ck, pos, tbl, i, hash) {  in bkey_cached_reuse()
186 			if (!test_bit(BKEY_CACHED_DIRTY, &ck->flags) &&  in bkey_cached_reuse()
187 			    bkey_cached_lock_for_evict(ck)) {  in bkey_cached_reuse()
188 				if (bkey_cached_evict(c, ck))  in bkey_cached_reuse()
190 				six_unlock_write(&ck->c.lock);  in bkey_cached_reuse()
191 				six_unlock_intent(&ck->c.lock);  in bkey_cached_reuse()
194 	ck = NULL;  in bkey_cached_reuse()
197 	return ck;  in bkey_cached_reuse()
222 	struct bkey_cached *ck = bkey_cached_alloc(trans, ck_path, key_u64s);  in btree_key_cache_create()  local
223 	int ret = PTR_ERR_OR_ZERO(ck);  in btree_key_cache_create()
227 	if (unlikely(!ck)) {  in btree_key_cache_create()
228 		ck = bkey_cached_reuse(bc);  in btree_key_cache_create()
229 		if (unlikely(!ck)) {  in btree_key_cache_create()
236 	ck->c.level		= 0;  in btree_key_cache_create()
237 	ck->c.btree_id		= ck_path->btree_id;  in btree_key_cache_create()
238 	ck->key.btree_id	= ck_path->btree_id;  in btree_key_cache_create()
239 	ck->key.pos		= ck_path->pos;  in btree_key_cache_create()
240 	ck->flags		= 1U << BKEY_CACHED_ACCESSED;  in btree_key_cache_create()
242 	if (unlikely(key_u64s > ck->u64s)) {  in btree_key_cache_create()
249 				bch2_btree_id_str(ck->key.btree_id), key_u64s);  in btree_key_cache_create()
256 		kfree(ck->k);  in btree_key_cache_create()
257 		ck->k = new_k;  in btree_key_cache_create()
258 		ck->u64s = key_u64s;  in btree_key_cache_create()
261 	bkey_reassemble(ck->k, k);  in btree_key_cache_create()
267 	ret = rhashtable_lookup_insert_fast(&bc->table, &ck->hash, bch2_btree_key_cache_params);  in btree_key_cache_create()
275 	six_unlock_write(&ck->c.lock);  in btree_key_cache_create()
279 		six_lock_downgrade(&ck->c.lock);  in btree_key_cache_create()
280 	btree_path_cached_set(trans, ck_path, ck, (enum btree_node_locked_type) lock_want);  in btree_key_cache_create()
284 	bkey_cached_free(bc, ck);  in btree_key_cache_create()
353 	struct bkey_cached *ck;  in btree_path_traverse_cached_fast()  local
356 	ck = bch2_btree_key_cache_find(c, path->btree_id, path->pos);  in btree_path_traverse_cached_fast()
357 	if (!ck)  in btree_path_traverse_cached_fast()
362 	int ret = btree_node_lock(trans, path, (void *) ck, 0, lock_want, _THIS_IP_);  in btree_path_traverse_cached_fast()
366 	if (ck->key.btree_id != path->btree_id ||  in btree_path_traverse_cached_fast()
367 	    !bpos_eq(ck->key.pos, path->pos)) {  in btree_path_traverse_cached_fast()
368 		six_unlock_type(&ck->c.lock, lock_want);  in btree_path_traverse_cached_fast()
372 	if (!test_bit(BKEY_CACHED_ACCESSED, &ck->flags))  in btree_path_traverse_cached_fast()
373 		set_bit(BKEY_CACHED_ACCESSED, &ck->flags);  in btree_path_traverse_cached_fast()
375 	btree_path_cached_set(trans, path, ck, (enum btree_node_locked_type) lock_want);  in btree_path_traverse_cached_fast()
418 	struct bkey_cached *ck = NULL;  in btree_key_cache_flush_pos()  local
434 	ck = (void *) btree_iter_path(trans, &c_iter)->l[0].b;  in btree_key_cache_flush_pos()
435 	if (!ck)  in btree_key_cache_flush_pos()
438 	if (!test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in btree_key_cache_flush_pos()
444 	if (journal_seq && ck->journal.seq != journal_seq)  in btree_key_cache_flush_pos()
447 	trans->journal_res.seq = ck->journal.seq;  in btree_key_cache_flush_pos()
455 	if (ck->journal.seq == journal_last_seq(j))  in btree_key_cache_flush_pos()
458 	if (ck->journal.seq != journal_last_seq(j) ||  in btree_key_cache_flush_pos()
470 	ret   = bch2_trans_update(trans, &b_iter, ck->k,  in btree_key_cache_flush_pos()
487 	bch2_journal_pin_drop(j, &ck->journal);  in btree_key_cache_flush_pos()
493 		if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in btree_key_cache_flush_pos()
494 			clear_bit(BKEY_CACHED_DIRTY, &ck->flags);  in btree_key_cache_flush_pos()
505 		bch2_btree_node_lock_write_nofail(trans, path, &ck->c);  in btree_key_cache_flush_pos()
507 		if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in btree_key_cache_flush_pos()
508 			clear_bit(BKEY_CACHED_DIRTY, &ck->flags);  in btree_key_cache_flush_pos()
513 		if (bkey_cached_evict(&c->btree_key_cache, ck)) {  in btree_key_cache_flush_pos()
514 			bkey_cached_free(&c->btree_key_cache, ck);  in btree_key_cache_flush_pos()
516 			six_unlock_write(&ck->c.lock);  in btree_key_cache_flush_pos()
517 			six_unlock_intent(&ck->c.lock);  in btree_key_cache_flush_pos()
530 	struct bkey_cached *ck =  in bch2_btree_key_cache_journal_flush()  local
537 	btree_node_lock_nopath_nofail(trans, &ck->c, SIX_LOCK_read);  in bch2_btree_key_cache_journal_flush()
538 	key = ck->key;  in bch2_btree_key_cache_journal_flush()
540 	if (ck->journal.seq != seq ||  in bch2_btree_key_cache_journal_flush()
541 	    !test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in bch2_btree_key_cache_journal_flush()
542 		six_unlock_read(&ck->c.lock);  in bch2_btree_key_cache_journal_flush()
546 	if (ck->seq != seq) {  in bch2_btree_key_cache_journal_flush()
547 		bch2_journal_pin_update(&c->journal, ck->seq, &ck->journal,  in bch2_btree_key_cache_journal_flush()
549 		six_unlock_read(&ck->c.lock);  in bch2_btree_key_cache_journal_flush()
552 	six_unlock_read(&ck->c.lock);  in bch2_btree_key_cache_journal_flush()
569 	struct bkey_cached *ck = (void *) (trans->paths + insert_entry->path)->l[0].b;  in bch2_btree_insert_key_cached()  local
573 	BUG_ON(insert->k.u64s > ck->u64s);  in bch2_btree_insert_key_cached()
575 	bkey_copy(ck->k, insert);  in bch2_btree_insert_key_cached()
577 	if (!test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in bch2_btree_insert_key_cached()
579 		set_bit(BKEY_CACHED_DIRTY, &ck->flags);  in bch2_btree_insert_key_cached()
599 	    !journal_pin_active(&ck->journal)) {  in bch2_btree_insert_key_cached()
600 		ck->seq = trans->journal_res.seq;  in bch2_btree_insert_key_cached()
603 			     &ck->journal, bch2_btree_key_cache_journal_flush);  in bch2_btree_insert_key_cached()
615 	struct bkey_cached *ck = (void *) path->l[0].b;  in bch2_btree_key_cache_drop()  local
621 	if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in bch2_btree_key_cache_drop()
622 		clear_bit(BKEY_CACHED_DIRTY, &ck->flags);  in bch2_btree_key_cache_drop()
624 		bch2_journal_pin_drop(&c->journal, &ck->journal);  in bch2_btree_key_cache_drop()
627 	bkey_cached_evict(bc, ck);  in bch2_btree_key_cache_drop()
628 	bkey_cached_free(bc, ck);  in bch2_btree_key_cache_drop()
635 		if (path2->l[0].b == (void *) ck) {  in bch2_btree_key_cache_drop()
651 	struct bkey_cached *ck;  in bch2_btree_key_cache_scan()  local
686 			ck = container_of(pos, struct bkey_cached, hash);  in bch2_btree_key_cache_scan()
688 			if (test_bit(BKEY_CACHED_DIRTY, &ck->flags)) {  in bch2_btree_key_cache_scan()
690 			} else if (test_bit(BKEY_CACHED_ACCESSED, &ck->flags)) {  in bch2_btree_key_cache_scan()
691 				clear_bit(BKEY_CACHED_ACCESSED, &ck->flags);  in bch2_btree_key_cache_scan()
693 			} else if (!bkey_cached_lock_for_evict(ck)) {  in bch2_btree_key_cache_scan()
695 			} else if (bkey_cached_evict(bc, ck)) {  in bch2_btree_key_cache_scan()
696 				bkey_cached_free(bc, ck);  in bch2_btree_key_cache_scan()
700 				six_unlock_write(&ck->c.lock);  in bch2_btree_key_cache_scan()
701 				six_unlock_intent(&ck->c.lock);  in bch2_btree_key_cache_scan()
747 	struct bkey_cached *ck;  in bch2_fs_btree_key_cache_exit()  local
770 					ck = container_of(pos, struct bkey_cached, hash);  in bch2_fs_btree_key_cache_exit()
771 					BUG_ON(!bkey_cached_evict(bc, ck));  in bch2_fs_btree_key_cache_exit()
772 					kfree(ck->k);  in bch2_fs_btree_key_cache_exit()
773 					kmem_cache_free(bch2_key_cache, ck);  in bch2_fs_btree_key_cache_exit()