bcachefs: bch2_fs_btree_gc_init()

Now returns errors, prep work for check_allocations_done_lock

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 9 insertions, 2 deletions

diff --git a/fs/bcachefs/btree_gc.c b/fs/bcachefs/btree_gc.c
index 721dca551720..dd1d9b74076e 100644
--- a/fs/bcachefs/btree_gc.c
+++ b/fs/bcachefs/btree_gc.c
@@ -1238,9 +1238,16 @@ void bch2_gc_gens_async(struct bch_fs *c)
 		bch2_write_ref_put(c, BCH_WRITE_REF_gc_gens);
 }
 
-void bch2_fs_gc_init(struct bch_fs *c)
+void bch2_fs_btree_gc_exit(struct bch_fs *c)
 {
-	seqcount_init(&c->gc_pos_lock);
+}
 
+int bch2_fs_btree_gc_init(struct bch_fs *c)
+{
+	seqcount_init(&c->gc_pos_lock);
 	INIT_WORK(&c->gc_gens_work, bch2_gc_gens_work);
+
+	init_rwsem(&c->gc_lock);
+	mutex_init(&c->gc_gens_lock);
+	return 0;
 }