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Date: Thu, 21 Feb 2013 08:26:27 -0500
From: Chris Mason <chris.mason@fusionio.com>
To: Miao Xie <miaox@cn.fujitsu.com>
CC: linux-btrfs <linux-btrfs@vger.kernel.org>,
        Mitch Harder <mitch.harder@sabayonlinux.org>
Subject: Re: [PATCH] Btrfs: fix wrong outstanding_extents when doing DIO write
Message-ID: <20130221132627.GC12051@shiny.masoncoding.com>
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On Thu, Feb 21, 2013 at 02:48:22AM -0700, Miao Xie wrote:
> When running the 083th case of xfstests on the filesystem with
> "compress-force=lzo", the following WARNINGs were triggered.
>   WARNING: at fs/btrfs/inode.c:7908
>   WARNING: at fs/btrfs/inode.c:7909
>   WARNING: at fs/btrfs/inode.c:7911
>   WARNING: at fs/btrfs/extent-tree.c:4510
>   WARNING: at fs/btrfs/extent-tree.c:4511
> 
> This problem was introduced by the patch "Btrfs: fix deadlock due
> to unsubmitted". In this patch, there are two bugs which caused
> the above problem.

I saw this as well on test 132 last night.  My plan was to track it down
this morning, so discovering it already fixed while I slept was
wonderful.

Thanks Miao.  Josef I've got this one and Miao's defrag unmount patch
queued up.

-chris