From: Andi Kleen <ak@suse.de>
To: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: mbind and alignment
Date: Wed, 4 Apr 2007 13:52:04 +0200 [thread overview]
Message-ID: <200704041352.04525.ak@suse.de> (raw)
In-Reply-To: <20070402204202.GC3316@interface.famille.thibault.fr>
>
> So one of those should probably be done to free people from headaches:
>
> - document "start" requirement in the manual page
> - require len to be aligned too, and document the requirements in the
> manual page
> - drop the "start" requirement and just round down the page + adjust
> size automatically.
This annoyed me in the past too. The kernel should have done that alignment
by itself. But changing it now would be a bad idea because it would
produce programs that run on newer kernels but break on olders.
Documenting it is the only sane option left.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: mbind and alignment
Date: Wed, 4 Apr 2007 13:52:04 +0200 [thread overview]
Message-ID: <200704041352.04525.ak@suse.de> (raw)
In-Reply-To: <20070402204202.GC3316@interface.famille.thibault.fr>
>
> So one of those should probably be done to free people from headaches:
>
> - document "start" requirement in the manual page
> - require len to be aligned too, and document the requirements in the
> manual page
> - drop the "start" requirement and just round down the page + adjust
> size automatically.
This annoyed me in the past too. The kernel should have done that alignment
by itself. But changing it now would be a bad idea because it would
produce programs that run on newer kernels but break on olders.
Documenting it is the only sane option left.
-Andi
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next prev parent reply other threads:[~2007-04-04 11:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-02 20:42 mbind and alignment Samuel Thibault
2007-04-02 20:42 ` Samuel Thibault
2007-04-03 21:27 ` Chuck Ebbert
2007-04-03 21:27 ` Chuck Ebbert
2007-04-04 11:52 ` Andi Kleen [this message]
2007-04-04 11:52 ` Andi Kleen
2007-04-04 12:26 ` Samuel Thibault
2007-04-04 12:26 ` Samuel Thibault
2007-04-04 17:19 ` Hugh Dickins
2007-04-04 17:19 ` Hugh Dickins
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