bcachefs: Silence errors after emergency shutdown

We don't care about errors from asynchronous ops that were because we
did an emergency shutdown; silence them.

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

fs/bcachefs/btree_update_interior.c

@@ -1268,7 +1268,8 @@ bch2_btree_update_start(struct btree_trans *trans, struct btree_path *path,
 	bch2_btree_update_free(as, trans);
 	if (!bch2_err_matches(ret, ENOSPC) &&
 	    !bch2_err_matches(ret, EROFS) &&
-	    ret != -BCH_ERR_journal_reclaim_would_deadlock)
+	    ret != -BCH_ERR_journal_reclaim_would_deadlock &&
+	    ret != -BCH_ERR_journal_shutdown)
 		bch_err_fn_ratelimited(c, ret);
 	return ERR_PTR(ret);
 }
@@ -2302,7 +2303,9 @@ static void async_btree_node_rewrite_work(struct work_struct *work)
 
 	int ret = bch2_trans_do(c, bch2_btree_node_rewrite_key(trans,
 						a->btree_id, a->level, a->key.k, 0));
-	if (ret != -ENOENT)
+	if (ret != -ENOENT &&
+	    !bch2_err_matches(ret, EROFS) &&
+	    ret != -BCH_ERR_journal_shutdown)
 		bch_err_fn_ratelimited(c, ret);
 
 	spin_lock(&c->btree_node_rewrites_lock);

fs/bcachefs/journal_io.c

@@ -1623,7 +1623,8 @@ static CLOSURE_CALLBACK(journal_write_done)
 			       : j->noflush_write_time, j->write_start_time);
 
 	if (!w->devs_written.nr) {
-		bch_err(c, "unable to write journal to sufficient devices");
+		if (!bch2_journal_error(j))
+			bch_err(c, "unable to write journal to sufficient devices");
 		err = -BCH_ERR_journal_write_err;
 	} else {
 		bch2_devlist_to_replicas(&replicas.e, BCH_DATA_journal,