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Message-ID: <3f250c71050121132713a145e3@mail.gmail.com>
Date: Fri, 21 Jan 2005 17:27:11 -0400
From: Mauricio Lin <mauriciolin@gmail.com>
Reply-To: Mauricio Lin <mauriciolin@gmail.com>
To: Andrea Arcangeli <andrea@suse.de>
Subject: Re: User space out of memory approach
Cc: Thomas Gleixner <tglx@linutronix.de>,
       Marcelo Tosatti <marcelo.tosatti@cyclades.com>,
       Edjard Souza Mota <edjard@gmail.com>,
       LKML <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@osdl.org>
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Hi Andrea,

I applied your patch and I am checking your code. It is really a very
interesting work. I have a question about the function
__set_current_state(TASK_INTERRUPTIBLE) you put in out_of_memory
function. Do not you think it would be better put set_current_state
instead of __set_current_state function? AFAIK the set_current_state
function is more feasible for SMP systems, right?

BR,

Mauricio Lin.


On Tue, 11 Jan 2005 09:38:37 +0100, Andrea Arcangeli <andrea@suse.de> wrote:
> On Tue, Jan 11, 2005 at 01:35:47AM +0100, Thomas Gleixner wrote:
> > confirmed fix for this available. It was posted more than once.
> 
> I posted 6 patches (1/4,2/4,3/4,4/4,5/4,6/4), they should be all
> applied to mainline, they're self contained. They add the userspace
> ratings too.
> 
> Those patches fixes a longstanding PF_MEMDIE race too and they optimize
> used_math as well.
> 
> I'm running with all 6 patches applied with an uptime of 6 days on SMP
> and no problems at all. They're all 6 patches applied to the kotd too
> (plus the other bits posted on l-k as well for the write throttling,
> just one bit is still missing but I'll add it soon):
> 
>         ftp://ftp.suse.com/pub/projects/kernel/kotd/i386/HEAD
> 
>
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