From patchwork Wed May 25 17:11:30 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josef Bacik X-Patchwork-Id: 816902 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p4PHBuvs000483 for ; Wed, 25 May 2011 17:11:56 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753331Ab1EYRLx (ORCPT ); Wed, 25 May 2011 13:11:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58330 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751798Ab1EYRLx (ORCPT ); Wed, 25 May 2011 13:11:53 -0400 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p4PHBqrF032368 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 25 May 2011 13:11:53 -0400 Received: from test1244.test.redhat.com (dhcp231-135.rdu.redhat.com [10.11.231.135]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p4PHBqHR013116 for ; Wed, 25 May 2011 13:11:52 -0400 From: Josef Bacik To: linux-btrfs@vger.kernel.org Subject: [PATCH] Btrfs: don't commit the transaction if we dont have enough pinned bytes Date: Wed, 25 May 2011 13:11:30 -0400 Message-Id: <1306343490-26057-1-git-send-email-josef@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 25 May 2011 17:11:56 +0000 (UTC) I noticed when running an enospc test that we would get stuck committing the transaction in check_data_space even though we truly didn't have enough space. So check to see if bytes_pinned is bigger than num_bytes, if it's not don't commit the transaction. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/extent-tree.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index c8c3184..adb6696 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3199,6 +3199,13 @@ alloc: } goto again; } + + /* + * If we have less pinned bytes than we want to allocate then + * don't bother committing the transaction, it won't help us. + */ + if (data_sinfo->bytes_pinned < num_bytes) + committed = 1; spin_unlock(&data_sinfo->lock); /* commit the current transaction and try again */