linux-kernel - Re: introducing __GFP

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Message-Id: <1241431031.21088.21.camel@penberg-laptop>
Date:	Mon, 04 May 2009 12:57:11 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	David Rientjes <rientjes@...gle.com>, Ingo Molnar <mingo@...e.hu>,
	Jack Steiner <steiner@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux-foundation.org>
Subject: Re: introducing __GFP_PANIC

On Mon, 2009-05-04 at 13:08 +0400, Cyrill Gorcunov wrote:
> Index: linux-2.6.git/mm/oom_kill.c
> =====================================================================
> --- linux-2.6.git.orig/mm/oom_kill.c
> +++ linux-2.6.git/mm/oom_kill.c
> @@ -422,6 +422,16 @@ static int oom_kill_process(struct task_
>  	return oom_kill_task(p);
>  }
>  
> +void oom_panic(gfp_t gfp_mask, unsigned int order)
> +{
> +	if (likely(!(gfp_mask & __GFP_PANIC)))
> +		return;
> +
> +	panic("Out of memory: panic due to __GFP_PANIC.\n"
> +		"%s order:%d, mode:0x%x\n", current->comm,
> +		order, gfp_mask);
> +}

I think this just makes things harder to follow. It has one call-site so
why not inline this there?

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