8202116: (fc) FileChannel.map should ensure mapped region is backed by disk space

[Thomas Stüfe]

On Tue, Apr 24, 2018 at 5:47 PM, Alan Bateman <Alan.Bateman at oracle.com> wrote:
> On 24/04/2018 11:56, Thomas Stüfe wrote:
>>
>> :
>> Okay. I was concerned about situations where we may run with a version
>> of glibc - or another libc - which uses the numerical value 4 for some
>> valid but different thing. E.g. as scetched in this patch proposal:
>>
>> https://lwn.net/Articles/439719/
>>
>> I did not do any further research though, so if you think there is no
>> risk, I am removing my objection.
>>
> That article seems to be pre-date the eventual addition (in Linux 3.1) where
> they choose a value of 4.
>
> In any case, I've looked at several options and think what we have is the
> best of a bad bunch. We can always re-visit.
>

Sure. I now think the risk is quite low.

Best Regards, Thomas

> -Alan