linux-kernel - Redundent Parameter or Inconsistent Hardcoding

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Message-ID: <a2ebde260612150808y20c61f30t584ceaa5e2dcdcf4@mail.gmail.com>
Date:	Sat, 16 Dec 2006 00:08:33 +0800
From:	"Dong Feng" <middle.fengdong@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Redundent Parameter or Inconsistent Hardcoding

Function permanent_kmaps_init() take a struct pgd_t as parameter.

I presume passing the struct pgd_t as a parameter is to make the
function flexible in order to reuse it under different cases. However,
I discover the following things imparing the rationality of this
parameter.

1. This function is invoke from one place only. That is, in
pagetable_init(), where swapper_pg_dir is passed as the parameter.

2. The function accesses swapper_pg_dir directly.

So I think either the parameter is redundent or the direct hardcoded
access to swapper_pg_dir within the function should be replaced by the
access to the parameter.
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