linux-kernel - Re: [PATCH] mm: make reserve_bootmem can crossed the nodes

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Message-Id: <20080314103431.ff07070c.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Fri, 14 Mar 2008 10:34:31 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Ingo Molnar" <mingo@...e.hu>, "Andi Kleen" <ak@...e.de>,
	"Christoph Lameter" <clameter@....com>,
	linux-kernel@...r.kernel.org,
	"Yasunori Goto" <y-goto@...fujitsu.com>
Subject: Re: [PATCH] mm: make reserve_bootmem can crossed the nodes

On Thu, 13 Mar 2008 16:45:42 -0700
"Yinghai Lu" <yhlu.kernel@...il.com> wrote:
> int __init reserve_bootmem(unsigned long addr, unsigned long size,
>  			    int flags)
>  {
> -	return reserve_bootmem_core(NODE_DATA(0)->bdata, addr, size, flags);
> +	int ret;
> +	bootmem_data_t *bdata;
> +	list_for_each_entry(bdata, &bdata_list, list) {
> +		ret = can_reserve_bootmem_core(bdata, addr, size, flags);
> +		if (ret < 0)
> +			return ret;
> +	}
> +	list_for_each_entry(bdata, &bdata_list, list)
> +		reserve_bootmem_core(bdata, addr, size, flags);
> +	return 0;
>  }

why list_for_each twice ?

Thanks,
-Kame

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