RE: [PATCH v2]Btrfs: pwrite blocked when writing from the mmaped buffer of the same page

["Zhong, Xin" <xin.zhong@xxxxxxxxx>]

Could you describe the steps to recreate it? 
It will be a great help for me to look further. Thanks!

-----Original Message-----
From: Johannes Hirte [mailto:johannes.hirte@xxxxxxxxxxxxxxxxx] 
Sent: Friday, January 28, 2011 10:55 AM
To: Zhong, Xin
Cc: Maria WikstrÃm; linux-btrfs@xxxxxxxxxxxxxxx
Subject: Re: [PATCH v2]Btrfs: pwrite blocked when writing from the mmaped buffer of the same page

On Friday 28 January 2011 02:26:43 Zhong, Xin wrote:
> Please try the fix in below link:
> http://www.spinics.net/lists/linux-btrfs/msg08051.html
> 
> Thanks!

This doesn't fix it for me. At least there is a difference. Whereas the svn 
process started consuming 100% CPU without any further interaction before, the 
system just hang now. The svn process starts eating the CPU when I cancel the 
emerge via ctrl-c. Additional I see a flush-btrfs task now consuming CPU time.

regards,
  Johannes
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