From 1306f87de399a0c791f03d68b50e03bdb3f409ae Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Thu, 2 Mar 2023 02:12:18 -0500 Subject: bcachefs: Plumb btree_trans through btree cache code Soon, __bch2_btree_node_write() is going to require a btree_trans: zoned device support is going to require a new allocation for every btree node write. This is a bit of prep work. Signed-off-by: Kent Overstreet --- fs/bcachefs/btree_cache.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) (limited to 'fs/bcachefs/btree_cache.c') diff --git a/fs/bcachefs/btree_cache.c b/fs/bcachefs/btree_cache.c index 769f17b67fcf..76cad6109297 100644 --- a/fs/bcachefs/btree_cache.c +++ b/fs/bcachefs/btree_cache.c @@ -561,8 +561,9 @@ static struct btree *btree_node_cannibalize(struct bch_fs *c) } } -struct btree *bch2_btree_node_mem_alloc(struct bch_fs *c, bool pcpu_read_locks) +struct btree *bch2_btree_node_mem_alloc(struct btree_trans *trans, bool pcpu_read_locks) { + struct bch_fs *c = trans->c; struct btree_cache *bc = &c->btree_cache; struct list_head *freed = pcpu_read_locks ? &bc->freed_pcpu @@ -673,8 +674,7 @@ err: } /* Slowpath, don't want it inlined into btree_iter_traverse() */ -static noinline struct btree *bch2_btree_node_fill(struct bch_fs *c, - struct btree_trans *trans, +static noinline struct btree *bch2_btree_node_fill(struct btree_trans *trans, struct btree_path *path, const struct bkey_i *k, enum btree_id btree_id, @@ -682,6 +682,7 @@ static noinline struct btree *bch2_btree_node_fill(struct bch_fs *c, enum six_lock_type lock_type, bool sync) { + struct bch_fs *c = trans->c; struct btree_cache *bc = &c->btree_cache; struct btree *b; u32 seq; @@ -691,14 +692,14 @@ static noinline struct btree *bch2_btree_node_fill(struct bch_fs *c, * Parent node must be locked, else we could read in a btree node that's * been freed: */ - if (trans && !bch2_btree_node_relock(trans, path, level + 1)) { + if (path && !bch2_btree_node_relock(trans, path, level + 1)) { trace_and_count(c, trans_restart_relock_parent_for_fill, trans, _THIS_IP_, path); return ERR_PTR(btree_trans_restart(trans, BCH_ERR_transaction_restart_fill_relock)); } - b = bch2_btree_node_mem_alloc(c, level != 0); + b = bch2_btree_node_mem_alloc(trans, level != 0); - if (trans && b == ERR_PTR(-ENOMEM)) { + if (b == ERR_PTR(-ENOMEM)) { trans->memory_allocation_failure = true; trace_and_count(c, trans_restart_memory_allocation_failure, trans, _THIS_IP_, path); return ERR_PTR(btree_trans_restart(trans, BCH_ERR_transaction_restart_fill_mem_alloc_fail)); @@ -744,7 +745,7 @@ static noinline struct btree *bch2_btree_node_fill(struct bch_fs *c, if (!sync) return NULL; - if (trans) { + if (path) { int ret = bch2_trans_relock(trans) ?: bch2_btree_path_relock_intent(trans, path); if (ret) { @@ -754,7 +755,7 @@ static noinline struct btree *bch2_btree_node_fill(struct bch_fs *c, } if (!six_relock_type(&b->c.lock, lock_type, seq)) { - if (trans) + if (path) trace_and_count(c, trans_restart_relock_after_fill, trans, _THIS_IP_, path); return ERR_PTR(btree_trans_restart(trans, BCH_ERR_transaction_restart_relock_after_fill)); } @@ -820,7 +821,7 @@ retry: * else we could read in a btree node from disk that's been * freed: */ - b = bch2_btree_node_fill(c, trans, path, k, path->btree_id, + b = bch2_btree_node_fill(trans, path, k, path->btree_id, level, lock_type, true); /* We raced and found the btree node in the cache */ @@ -1029,7 +1030,7 @@ retry: if (nofill) goto out; - b = bch2_btree_node_fill(c, NULL, NULL, k, btree_id, + b = bch2_btree_node_fill(trans, NULL, k, btree_id, level, SIX_LOCK_read, true); /* We raced and found the btree node in the cache */ @@ -1089,12 +1090,12 @@ out: return b; } -int bch2_btree_node_prefetch(struct bch_fs *c, - struct btree_trans *trans, +int bch2_btree_node_prefetch(struct btree_trans *trans, struct btree_path *path, const struct bkey_i *k, enum btree_id btree_id, unsigned level) { + struct bch_fs *c = trans->c; struct btree_cache *bc = &c->btree_cache; struct btree *b; @@ -1105,7 +1106,7 @@ int bch2_btree_node_prefetch(struct bch_fs *c, if (b) return 0; - b = bch2_btree_node_fill(c, trans, path, k, btree_id, + b = bch2_btree_node_fill(trans, path, k, btree_id, level, SIX_LOCK_read, false); return PTR_ERR_OR_ZERO(b); } -- cgit v1.2.3