From a0a466ea981ba57426e8ae56e2291d0f39566442 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Sun, 17 Mar 2024 20:25:39 -0400 Subject: bcachefs: Split out btree_node_rewrite_worker This fixes a deadlock due to using btree_interior_update_worker for non interior updates - async btree node rewrites were blocking, and then blocking other interior updates. Signed-off-by: Kent Overstreet --- fs/bcachefs/bcachefs.h | 2 ++ fs/bcachefs/btree_update_interior.c | 11 +++++++++-- 2 files changed, 11 insertions(+), 2 deletions(-) (limited to 'fs/bcachefs') diff --git a/fs/bcachefs/bcachefs.h b/fs/bcachefs/bcachefs.h index 339dc3e1dcd3..799aa32b6b4d 100644 --- a/fs/bcachefs/bcachefs.h +++ b/fs/bcachefs/bcachefs.h @@ -849,6 +849,8 @@ struct bch_fs { struct workqueue_struct *btree_interior_update_worker; struct work_struct btree_interior_update_work; + struct workqueue_struct *btree_node_rewrite_worker; + struct list_head pending_node_rewrites; struct mutex pending_node_rewrites_lock; diff --git a/fs/bcachefs/btree_update_interior.c b/fs/bcachefs/btree_update_interior.c index 642213ef9f79..5b2094458df7 100644 --- a/fs/bcachefs/btree_update_interior.c +++ b/fs/bcachefs/btree_update_interior.c @@ -2161,7 +2161,7 @@ void bch2_btree_node_rewrite_async(struct bch_fs *c, struct btree *b) bch2_write_ref_get(c, BCH_WRITE_REF_node_rewrite); } - queue_work(c->btree_interior_update_worker, &a->work); + queue_work(c->btree_node_rewrite_worker, &a->work); } void bch2_do_pending_node_rewrites(struct bch_fs *c) @@ -2173,7 +2173,7 @@ void bch2_do_pending_node_rewrites(struct bch_fs *c) list_del(&a->list); bch2_write_ref_get(c, BCH_WRITE_REF_node_rewrite); - queue_work(c->btree_interior_update_worker, &a->work); + queue_work(c->btree_node_rewrite_worker, &a->work); } mutex_unlock(&c->pending_node_rewrites_lock); } @@ -2510,6 +2510,8 @@ bch2_btree_roots_to_journal_entries(struct bch_fs *c, void bch2_fs_btree_interior_update_exit(struct bch_fs *c) { + if (c->btree_node_rewrite_worker) + destroy_workqueue(c->btree_node_rewrite_worker); if (c->btree_interior_update_worker) destroy_workqueue(c->btree_interior_update_worker); mempool_exit(&c->btree_interior_update_pool); @@ -2534,6 +2536,11 @@ int bch2_fs_btree_interior_update_init(struct bch_fs *c) if (!c->btree_interior_update_worker) return -BCH_ERR_ENOMEM_btree_interior_update_worker_init; + c->btree_node_rewrite_worker = + alloc_ordered_workqueue("btree_node_rewrite", WQ_UNBOUND); + if (!c->btree_node_rewrite_worker) + return -BCH_ERR_ENOMEM_btree_interior_update_worker_init; + if (mempool_init_kmalloc_pool(&c->btree_interior_update_pool, 1, sizeof(struct btree_update))) return -BCH_ERR_ENOMEM_btree_interior_update_pool_init; -- cgit v1.2.3