From patchwork Wed Oct 16 20:27:01 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Mahoney X-Patchwork-Id: 3057241 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8AC9F9F2B6 for ; Wed, 16 Oct 2013 20:27:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6C39220425 for ; Wed, 16 Oct 2013 20:27:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2827020336 for ; Wed, 16 Oct 2013 20:27:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761612Ab3JPU1H (ORCPT ); Wed, 16 Oct 2013 16:27:07 -0400 Received: from cantor2.suse.de ([195.135.220.15]:55206 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761410Ab3JPU1F (ORCPT ); Wed, 16 Oct 2013 16:27:05 -0400 Received: from relay1.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E2409A57B3 for ; Wed, 16 Oct 2013 22:27:04 +0200 (CEST) Message-ID: <525EF695.9020307@suse.com> Date: Wed, 16 Oct 2013 16:27:01 -0400 From: Jeff Mahoney User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 MIME-Version: 1.0 To: linux-btrfs Subject: [PATCH] btrfs: add tracing for failed reservations X-Enigmail-Version: 1.5.2 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When debugging ENOSPC issues, it's nice to be able to see which reservations failed as well as the ones which succeeded. Signed-off-by: Jeff Mahoney --- fs/btrfs/extent-tree.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/fs/btrfs/extent-tree.c 2013-10-13 18:41:28.000000000 -0400 +++ b/fs/btrfs/extent-tree.c 2013-10-16 16:23:27.986639216 -0400 @@ -3681,6 +3681,9 @@ commit_trans: goto again; } + trace_btrfs_space_reservation(root->fs_info, + "space_info:enospc", + data_sinfo->flags, bytes, 1); return -ENOSPC; } data_sinfo->bytes_may_use += bytes; @@ -4332,6 +4335,10 @@ out: !block_rsv_use_bytes(global_rsv, orig_bytes)) ret = 0; } + if (ret == -ENOSPC) + trace_btrfs_space_reservation(root->fs_info, + "space_info:enospc", + space_info->flags, orig_bytes, 1); if (flushing) { spin_lock(&space_info->lock); space_info->flush = 0;