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Date: Mon, 21 Oct 2013 23:37:59 +0300
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Subject: swapfile on btrfs, temporary solution for wiki
To: linux-btrfs@vger.kernel.org
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Hello list, i know what btrfs  don't support swap files.
I read arch wiki and when i reading about systemd addon for auto
create swapfile on btrfs, i invent the way, how create and using swap
file, just see following sh code:

swapfile=$(losetup -f) #free loop device
truncate -s 8G /swap   #create 8G sparse swap file
losetup $swapfile /swap #mount file to loop
mkswap  $swapfile
swapon  $swapfile

i just adding this to rc.local and this just work.
May be, add it to Wiki as temporary solution to using swap file?
(sorry for my bad english)