[PATCH] mkfs.xfs: always use underlying fs sector size when mkfs'ing a file

[Christoph Hellwig]

On Fri, Jun 19, 2015 at 10:17:10AM -0500, Eric Sandeen wrote:
> though we also claim to nominally support building on osx, irix, etc,
> which doesn't have that library, right?

Debian supports it for kfreebsd and hurd, and
https://trac.macports.org/ticket/15546 suggest an older version did
build on OS X.  So I don't think it's a real problem even if IRIX
might require some minor porting efforts.