Re: [PATCH] fs: befs: replace GFP_KERNEL by GFP_NOFS

[Al Viro]

On Fri, May 20, 2016 at 12:07:08PM +0100, Salah Triki wrote:
> Since this is a filesystem driver, using the flag GFP_NOFS is more 
> appropriate than the flag GFP_KERNEL.

What does "more appropriate" mean?  Either there is a specific reason, or
it's a cargo-culting, plain and simple.  _Why_ does it need GFP_NOFS?