[sheepdog] [PATCH 2/2] farm: drop fcntl lock

[Christoph Hellwig]

On Tue, Jun 05, 2012 at 09:20:30PM +0800, Liu Yuan wrote:
> You meant the requests from Guest could be overlapped? Disk is seen by
> guest OS as an array of blocks, I can't imagine any sane driver issue
> overlapped requests to disk drive controller.

Yes, we've seen overlapping or duplicate requests from the OS.

Assuming any sort of sanity from the OS is unfortunately not an option
in virtualized environments.