linux-kernel - Re: [patch 2/3] MAP_NOZERO

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Message-ID: <Pine.LNX.4.64.0706262052060.26540@alien.or.mcafeemobile.com>
Date:	Tue, 26 Jun 2007 20:55:32 -0700 (PDT)
From:	Davide Libenzi <davidel@...ilserver.org>
To:	Ulrich Drepper <drepper@...il.com>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [patch 2/3] MAP_NOZERO - implement sys_brk2()

On Tue, 26 Jun 2007, Ulrich Drepper wrote:

> On 6/26/07, Davide Libenzi <davidel@...ilserver.org> wrote:
> > The following patch implements the sys_brk2() syscall, that nothing is
> > other than a sys_brk() with an extra "flags" parameter.
> 
> Shouldn't we wait for Linus' sys_indirect to arrive and make this
> another syscall which takes advantage of it?

I acutally have the code for it, but I never posted it since it did not 
receive a too warm review (and the only user was the fdmap thingy).
OTOH glibc could implement __morecore using mmap(MAP_NOZERO), and hence 
brk2() would not be needed, no?



- Davide


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