Re: [PATCH 1/2] ntdll: Use posix_fallocate(2/3) instead of fallocate(2).

[Alexandre Julliard]

Chip Davis  writes:
> From: Charles Davis
>
> The fallocate(2) call only exists on Linux. posix_fallocate() is more
> portable.

I'd suggest to always use posix_fallocate() then, and don't worry about
adding fallbacks. We can simply skip the call if it's missing.