linux-kernel - Re: Forbid deletion of memory mappings

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Message-Id: <200708302332.42744.clemens.kol@gmx.at>
Date:	Thu, 30 Aug 2007 23:32:42 +0200
From:	Clemens Kolbitsch <clemens.kol@....at>
To:	linux-kernel@...r.kernel.org
Cc:	Jiri Kosina <jikos@...os.cz>
Subject: Re: Forbid deletion of memory mappings

On Thursday 30 August 2007 19:07:05 you wrote:
> On Thu, 30 Aug 2007, Clemens Kolbitsch wrote:
> > It all works perfectly well (creating & deleting the additional
> > mappings), however, when the kernel feels like it needs to allocate a
> > mapping in user-space it sometimes deletes my mapping and overwrites it
> > with the new one, although there is plenty of free memory at some other
> > location.
>
> Hi Clemens,
>
> what do you mean by "overwrites it"? It just probably merges your vma with
> the newly created one, right?

does really noone have an answer for me?? i'm having the hardest time to find 
a work-around for it.

is there no way to tell the kernel, that a certain mapping must not be 
removed, no matter what (except of course an explicit call to sys_unmap, of 
course)?
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