Re: posix_fallocate

[Jamie Lokier]

Ulrich Drepper wrote:
> > You could try using sendfile from /dev/zero -- that gives the kernel or
> > fs a chance to optimise that path in future.
> 
> One must not change the file pointer position.  Therefore sendfile is out.

Anyway it isn't guaranteed to work -- I would guess an fs is free to
convert zero blocks to holes as an optimisation.

-- Jamie