From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3B96CDB474 for ; Mon, 23 Oct 2023 11:18:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233744AbjJWLSc (ORCPT ); Mon, 23 Oct 2023 07:18:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46314 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233731AbjJWLSc (ORCPT ); Mon, 23 Oct 2023 07:18:32 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D9A2DD for ; Mon, 23 Oct 2023 04:18:30 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF745C433C7; Mon, 23 Oct 2023 11:18:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1698059910; bh=rwIUsgw4/7HYb1UQeqvp0rO+fIeEAbNN+pk26nvU2GQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eOzaGNKPw2lCcmeO9cVxObeM8gxwB0EbZRqGPS/XFzdnTj3dtX/MIQWYLK9FfaYr9 Lhbe84e70J+3AG0KhWUaCxzr97is266lTYd3xJqufWKb4mQz5nNtvR4qpVOHumXNDJ gmt1+Wwr4YRKvSTiHJwjtbfEJvPmQDV0ZICT1OXU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Josef Bacik , Filipe Manana , David Sterba , Sasha Levin Subject: [PATCH 4.19 67/98] btrfs: return -EUCLEAN for delayed tree ref with a ref count not equals to 1 Date: Mon, 23 Oct 2023 12:56:56 +0200 Message-ID: <20231023104815.954409527@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231023104813.580375891@linuxfoundation.org> References: <20231023104813.580375891@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Filipe Manana [ Upstream commit 1bf76df3fee56d6637718e267f7c34ed70d0c7dc ] When running a delayed tree reference, if we find a ref count different from 1, we return -EIO. This isn't an IO error, as it indicates either a bug in the delayed refs code or a memory corruption, so change the error code from -EIO to -EUCLEAN. Also tag the branch as 'unlikely' as this is not expected to ever happen, and change the error message to print the tree block's bytenr without the parenthesis (and there was a missing space between the 'block' word and the opening parenthesis), for consistency as that's the style we used everywhere else. Reviewed-by: Josef Bacik Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Sasha Levin --- fs/btrfs/extent-tree.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index bb05b0a82c8ba..902ab00bfd7ab 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2327,12 +2327,12 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans, parent = ref->parent; ref_root = ref->root; - if (node->ref_mod != 1) { + if (unlikely(node->ref_mod != 1)) { btrfs_err(trans->fs_info, - "btree block(%llu) has %d references rather than 1: action %d ref_root %llu parent %llu", + "btree block %llu has %d references rather than 1: action %d ref_root %llu parent %llu", node->bytenr, node->ref_mod, node->action, ref_root, parent); - return -EIO; + return -EUCLEAN; } if (node->action == BTRFS_ADD_DELAYED_REF && insert_reserved) { BUG_ON(!extent_op || !extent_op->update_flags); -- 2.40.1