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From: Namhyung Kim <namhyung@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>, Roland McGrath <roland@redhat.com>,
        Oleg Nesterov <oleg@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3 RESEND] ptrace: cleanup address space conversion on ptrace_request()
In-Reply-To: <201008241345.06507.arnd@arndb.de> (Arnd Bergmann's message of
	"Tue, 24 Aug 2010 13:45:06 +0200")
References: <201008222206.18523.arnd@arndb.de>
	<20100823162105.GA19164@infradead.org>
	<1282581489.1659.13.camel@leonhard> <201008241345.06507.arnd@arndb.de>
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Date: Wed, 25 Aug 2010 16:48:40 +0900
Message-ID: <87sk23w2sn.fsf@gmail.com>
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Arnd Bergmann <arnd@arndb.de> writes:
> I don't think we ever rely on 'data' being signed, and user space
> sees it as 'void *' anyway, so it should be possible to just turn
> it into 'unsigned long'.
>

After I've checked all arch_ptrace() code, I can think there is no specific
reason @addr and @data to be signed long types. Most of archs use them
as if they were unsigned. So I'll prepare a patch series to change this
and some cleanups of ptrace_request() and all of arch_ptrace() if no
objection exists.

Thanks.

-- 
Regards,
Namhyung Kim
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