linux-kernel - Re: [PATCH 14/38] Remove struct mm_struct::exe

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Message-Id: <20090531151953.8f8b14b5.akpm@linux-foundation.org>
Date:	Sun, 31 May 2009 15:19:53 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	Matt Helsley <matthltc@...ibm.com>, xemul@...allels.com,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, dave@...ux.vnet.ibm.com,
	mingo@...e.hu, torvalds@...ux-foundation.org
Subject: Re: [PATCH 14/38] Remove struct mm_struct::exe_file et al

On Mon, 1 Jun 2009 01:54:27 +0400 Alexey Dobriyan <adobriyan@...il.com> wrote:

> And BTW, there is something unnatural when executable path is attached
> to mm_struct(!) not task_struct,

mm_struct is the central object for a heavyweight process.  All threads
within that process share the same executable path (don't they?) so
attaching the executable path to the mm seems OK to me.

What I always find a bit weird is that an MM container is used as the
central point for a number of sched obects.  But it's logical, given
that the never-before-stated definition of a heavyweight process is
"thing which share a VM".
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