linux-kernel - Re: [PATCH] staging: Disable lustre file system for MIPS, SH, and XTENSA

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Message-ID: <20130911014443.GA20996@infradead.org>
Date:	Tue, 10 Sep 2013 18:44:43 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Peng Tao <bergwolf@...il.com>
Cc:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"Dilger, Andreas" <andreas.dilger@...el.com>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH] staging: Disable lustre file system for MIPS, SH, and
 XTENSA

On Wed, Sep 11, 2013 at 01:14:11AM +0800, Peng Tao wrote:
> The problem is access_process_vm() is not exported since certain
> version of kernel including the latest. According to Christoph in the
> other mail, access_process_vm() is also a core mm function that is not
> supposed to be exported. Then what kind of change shall we make in
> order to keep current functionality?

You should remove the higher level functionality, kernel modules are
not supposed to look at userspace environment variables.

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