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Date:   Fri, 30 Jul 2021 16:03:29 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Jonathan Corbet <corbet@lwn.net>
Cc:     Cai Huoqing <caihuoqing@baidu.com>, tj@kernel.org,
        lizefan.x@bytedance.com, hannes@cmpxchg.org,
        cgroups@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH] cgroup: Fix typo in comments and documents
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References: <20210730051605.2626-1-caihuoqing@baidu.com>
 <87lf5nc0su.fsf@meer.lwn.net>
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On Fri, Jul 30, 2021 at 08:51:29AM -0600, Jonathan Corbet wrote:
> Cai Huoqing <caihuoqing@baidu.com> writes:
> 
> > Fix typo: iff  ==> if
> >
> > Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
> 
> This is becoming an FAQ ...  "iff" in mathematical English means "if and
> only if"; its usage in these documents is correct.

... and yet it's clearly not understood.  Similarly to the [start..end)
convention (also the [start..end[ convention).  Should we deprecate
use of it in kernel documentation, and if so, what should we replace it
with?