linux-kernel - Re: [RFC PATCH v5 05/19] memory-hotplug: check whether memory is present or not

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Message-ID: <CA+8MBbL+G=xqkWU4xGF3_Ra7KoeoHuzL6QYcRiKqtVZoOBfLdQ@mail.gmail.com>
Date:	Fri, 27 Jul 2012 13:17:20 -0700
From:	Tony Luck <tony.luck@...el.com>
To:	Wen Congyang <wency@...fujitsu.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-acpi@...r.kernel.org,
	linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-ia64@...r.kernel.org, cmetcalf@...era.com,
	rientjes@...gle.com, liuj97@...il.com, len.brown@...el.com,
	benh@...nel.crashing.org, paulus@...ba.org, cl@...ux.com,
	minchan.kim@...il.com, akpm@...ux-foundation.org,
	kosaki.motohiro@...fujitsu.com,
	Yasuaki ISIMATU <isimatu.yasuaki@...fujitsu.com>
Subject: Re: [RFC PATCH v5 05/19] memory-hotplug: check whether memory is
 present or not

On Fri, Jul 27, 2012 at 3:28 AM, Wen Congyang <wency@...fujitsu.com> wrote:
> +static inline int pfns_present(unsigned long pfn, unsigned long nr_pages)
> +{
> +       int i;
> +       for (i = 0; i < nr_pages; i++) {
> +               if (pfn_present(pfn + 1))

Typo? I think you meant "pfn + i"

> +                       continue;
> +               else
> +                       return -EINVAL;
> +       }
> +       return 0;
> +}

-Tony
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