Re: DIOCGDISCARDINFO and DIOCDISCARD

[Joerg Sonnenberger]

On Sat, Jun 15, 2013 at 11:56:55PM +0000, David Holland wrote:
> (we can argue about what to call the syscall; I think there's prior
> art but can't remember what at the moment)

fallocate with FALLOC_FL_PUNCH_HOLE on the device node?

Joerg