From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp1040.oracle.com ([141.146.126.69]:43016 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753532AbaIWGp4 (ORCPT ); Tue, 23 Sep 2014 02:45:56 -0400 Date: Tue, 23 Sep 2014 14:45:44 +0800 From: Liu Bo To: nick Cc: linux-btrfs@vger.kernel.org Subject: Re: Sparse Warnings about locks in extent-tree.c Message-ID: <20140923064543.GA3337@localhost.localdomain> Reply-To: bo.li.liu@oracle.com References: <5420D38F.9060903@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <5420D38F.9060903@gmail.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Mon, Sep 22, 2014 at 09:57:35PM -0400, nick wrote: > Hello Btfs Developers, > I am new so am unsure of how to fix this but we are hitting some sparse warnings about unlock/lock is having > a wrong count when exiting certain functions in extent-tree.c. I will paste the warnings below for you guys. > Hope this is of help. > Cheers, > Nick > fs/btrfs/extent-tree.c:6386:39: warning: context imbalance in 'btrfs_lock_cluster' - wrong count at exit > fs/btrfs/extent-tree.c:6663:44: warning: context imbalance in 'find_free_extent' - unexpected unlock > fs/btrfs/extent-tree.c:8810:9: warning: context imbalance in 'btrfs_put_block_group_cache' - wrong count at exit Hi Nick, What program is producing these warning? It looks like a static code analysis tool or something. thanks, -liubo