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Date: Mon, 4 Apr 2016 09:31:01 +0200
From: Michal Hocko <mhocko@...nel.org>
To: Piotr Kwapulinski <kwapulinski.piotr@...il.com>
Cc: akpm@...ux-foundation.org, mtk.manpages@...il.com,
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Subject: Re: [PATCH 0/3] mm/mmap.c: don't unmap the overlapping VMA(s)
On Sat 02-04-16 21:17:31, Piotr Kwapulinski wrote:
> Currently the mmap(MAP_FIXED) discards the overlapping part of the
> existing VMA(s).
> Introduce the new MAP_DONTUNMAP flag which forces the mmap to fail
> with ENOMEM whenever the overlapping occurs and MAP_FIXED is set.
> No existing mapping(s) is discarded.
You forgot to tell us what is the use case for this new flag.
--
Michal Hocko
SUSE Labs
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