linux-kernel - Re: [PATCH, RFC, v2] shmat: introduce flag SHM_MAP

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Message-ID: <20081007112322.GB5126@localhost.localdomain>
Date:	Tue, 7 Oct 2008 14:23:23 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Ingo Molnar <mingo@...hat.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH, RFC, v2] shmat: introduce flag SHM_MAP_HINT

On Tue, Oct 07, 2008 at 01:26:31PM +0200, Andi Kleen wrote:
> > I want say that we shouldn't do this check if shmaddr is a search hint.
> > I'm not sure that check is unneeded if shmadd is the exact address.
> 
> mmap should fail in this case because it does the same check for 
> MAP_FIXED. Obviously it cannot succeed when there is already something
> else there.

We can do it in separate patch, I think.

-- 
Regards,  Kirill A. Shutemov
 + Belarus, Minsk
 + ALT Linux Team, http://www.altlinux.com/

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