On Fri, Jul 02, 2010 at 03:38:50PM +0200, Petr Uzel wrote:
> Btrfs, as of 2.6.35, is unable to allow swapfiles to be used on its
> filesystems. This is due to the swapfile implementation wanting to build
> an extent map of each block in the file and expecting it to be static
> for the life of the swapfile.
>
> Btrfs can't guarantee this and refuses to return the mapping. The swapfile
> implementation just makes a comment about there being holes in the file -
> but that's how btrfs denies the mapping.
>
> This patch adds a section to the swapon manpage to document it.
Applied, thanks.
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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