Comment # 74 on bug 1063638 from Thomas K�nig

(In reply to Jeff Mahoney from comment #73)

> So, enough with the debating.  Yes, I get that people are severely affected
> by this issue when it pops up.  Belittling their concerns doesn't stop the
> issue from happening.  Likewise, calling for everyone's heads because you're
> experiencing this issue doesn't get it fixed any more quickly.  Workarounds
> are to disable quotas or uninstall the btrfsmaintenance package.

Disabling quotas did not work for me when I experienced the bug.
Like I said above, I cannot provide any more data because I chose
to re-install my system without btrfs (which I need for gcc development).