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Date: Fri, 14 Dec 2012 12:51:06 -0500
From: Josef Bacik <jbacik@fusionio.com>
To: Miao Xie <miaox@cn.fujitsu.com>
CC: Linux Btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: [PATCH 5/5] Btrfs: fix remount vs autodefrag
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On Mon, Nov 26, 2012 at 02:28:13AM -0700, Miao Xie wrote:
> If we remount the fs to close the auto defragment or make the fs R/O, we should
> stop the auto defragment.
> 
> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>

I'm dropping this patch, it causes a deadlock since defrag will need to reserve
metadata which could call writeback_sb_nr_if_idle which does a
down_read(&sb->s_umount).  Figure out another way to fix this and I'll apply it.
Thanks,

Josef