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Date: Thu, 13 Sep 2012 08:38:34 -0400
From: Josef Bacik <jbacik@fusionio.com>
To: Miao Xie <miaox@cn.fujitsu.com>
CC: Linux Btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: [PATCH 2/2] Revert "Btrfs: do not do
 filemap_write_and_wait_range in fsync"
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On Thu, Sep 13, 2012 at 04:53:47AM -0600, Miao Xie wrote:
> This reverts commit 0885ef5b5601e9b007c383e77c172769b1f214fd
> 
> After applying the above patch, the performance slowed down because the dirty
> page flush can only be done by one task, so revert it.
> 
> The following is the test result of sysbench:
> 	Before		After
> 	24MB/s		39MB/s
> 

Ah I didn't think about that, good point, thanks!

Josef