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Date: Sat, 18 Jan 2003 00:15:46 -0800
From: Andrew Morton <akpm@digeo.com>
To: davidm@hpl.hp.com
Cc: davidm@napali.hpl.hp.com, anton@samba.org, linux-kernel@vger.kernel.org
Subject: Re: recent change to exit_mmap
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David Mosberger <davidm@napali.hpl.hp.com> wrote:
>
> I don't know why SET_PERSONALITY() came to be where it is now, but it
> does make some sense to me.  One thing that comes to mind: on ia64, we
> normally don't map data segments with execute permission but for
> backwards-compatibility, we need to do that for x86 binaries.  I think
> there might be a problem with that if SET_PERSONALITY() was done too
> late.  Certainly something that could be fixed, but I suspect a
> similar ordering issue (perhaps on SPARC?) might have triggered the
> current placement of SET_PERSONALITY().
> 

hmm.  Seems that all the activities between the two first SET_PERSONALITY()
calls and the flush_old_exec() are pretty innocuous.  And no mappings could
be set up there, because flush_old_exec() would remove them again.

I'll ask Dave about it.


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