[PATCH 1/6] ext4: Move is_32bit_api() to generic code

[Christoph Hellwig]

On Sun, May 21, 2017 at 10:20:46PM +0200, Richard Weinberger wrote:
> Since UBIFS will also use this function, move it to compat.h.

The name is very generic for a common header.  Please give it a
better name.