linux-kernel - Re: [PATCH] fs: befs: replace GFP_KERNEL by GFP

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Message-ID: <20160521005701.GV14480@ZenIV.linux.org.uk>
Date:	Sat, 21 May 2016 01:57:01 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Salah Triki <salah.triki@....org>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fs: befs: replace GFP_KERNEL by GFP_NOFS

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?