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Re: [PATCH] do not count pages in holes with sparsemem

To: vagabon.xyz@gmail.com
Subject: Re: [PATCH] do not count pages in holes with sparsemem
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Sun, 09 Jul 2006 01:03:16 +0900 (JST)
Cc: linux-mips@linux-mips.org, ralf@linux-mips.org
In-reply-to: <cda58cb80607080739i772d439dqc4e06a8b275e03ee@mail.gmail.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <cda58cb80607060805yc656114p53516b904188c20f@mail.gmail.com> <20060707.002602.75184460.anemo@mba.ocn.ne.jp> <cda58cb80607080739i772d439dqc4e06a8b275e03ee@mail.gmail.com>
Sender: linux-mips-bounce@linux-mips.org
On Sat, 8 Jul 2006 16:39:44 +0200, "Franck Bui-Huu" <vagabon.xyz@gmail.com> 
wrote:
> Did you check that show_mem() still works ? I'm not sure about that point.

It should work, but this patch would make the output a bit better.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>

diff --git a/arch/mips/mm/pgtable.c b/arch/mips/mm/pgtable.c
index 792c6eb..c93aa6c 100644
--- a/arch/mips/mm/pgtable.c
+++ b/arch/mips/mm/pgtable.c
@@ -15,6 +15,8 @@ #ifndef CONFIG_NEED_MULTIPLE_NODES  /* X
        printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
        pfn = max_mapnr;
        while (pfn-- > 0) {
+               if (!pfn_valid(pfn))
+                       continue;
                page = pfn_to_page(pfn);
                total++;
                if (PageHighMem(page))

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