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

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fre 2011-01-28 klockan 03:54 +0100 skrev Johannes Hirte: 
> 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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> 

The patch makes the process exit cleanly but complains that there is no
space left. It should be a few GB but it is only a few MB!? I delete 5GB
and controls that the space is usable. Try again but this time it almost
hangs the system, I can blink the leds and move the mouse but noting
more. 
I boot 2.6.36.1 and use a snapshot as root, "emerge libgcrypt" compiles
and installs fine. Boots back into 2.6.37 and try again and the system
hangs again.

// Maria


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