Re: [Bug-tar] Use posix_fadvise to improve archive creation performance

[Paul Eggert]

On 03/30/2017 09:01 AM, Mark wrote:
> I think it would be a good idea to add an option to tell tar whether to
> use POSIX_FADV_NOREUSE, POSIX_FADV_DONTNEED, or neither, since there may
> be cases where any of the three possibilities is best.

Might make sense, yes.

> Or maybe tar could
> read an environment variable to determine which to use?

We're trying to get away from environment variables since they can be a 
hassle for security reasons. Arguably an exception could be made in this 
case, since it's just advice.