linux-kernel - Re: [PATCH v6] add MAP

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Message-ID: <20100118143232.0a0c4b4d@lxorguk.ukuu.org.uk>
Date:	Mon, 18 Jan 2010 14:32:32 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Gleb Natapov <gleb@...hat.com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>, linux-mm@...ck.org,
	kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org, akpm@...ux-foundation.org,
	andrew.c.morrow@...il.com,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH v6] add MAP_UNLOCKED mmap flag

> this kind of control. As of use of mlockall(MCL_FUTURE) how can I make
> sure that all memory allocated behind my application's back (by dynamic
> linker, libraries, stack) will be locked otherwise?

If you add this flag you can't do that anyway - some library will
helpfully start up using it and then you are completely stuffed or will
be back in two or three years adding MLOCKALL_ALWAYS.

Alan
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