linux-kernel - Re: [Patch] alloc_large_system_hash printk overflow on 16TB boot.

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Date:	Mon, 4 Oct 2010 11:29:11 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	Robin Holt <holt@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [Patch] alloc_large_system_hash printk overflow on 16TB boot.

On Sun, Oct 03, 2010 at 08:26:05AM -0500, Robin Holt wrote:
>During boot of a 16TB system, the following is printed:
>Dentry cache hash table entries: -2147483648 (order: 22, 17179869184 bytes)
>
>Signed-off-by: Robin Holt <holt@....com>
>To: Andrew Morton <akpm@...ux-foundation.org>
>Cc: lkml <linux-kernel@...r.kernel.org>

Reviewed-by: WANG Cong <xiyou.wangcong@...il.com>

Thanks.


>
>---
>
> mm/page_alloc.c |    4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
>Index: pv1010934/mm/page_alloc.c
>===================================================================
>--- pv1010934.orig/mm/page_alloc.c	2010-10-01 10:27:07.000000000 -0500
>+++ pv1010934/mm/page_alloc.c	2010-10-03 07:53:13.551824924 -0500
>@@ -5182,9 +5182,9 @@ void *__init alloc_large_system_hash(con
> 	if (!table)
> 		panic("Failed to allocate %s hash table\n", tablename);
> 
>-	printk(KERN_INFO "%s hash table entries: %d (order: %d, %lu bytes)\n",
>+	printk(KERN_INFO "%s hash table entries: %ld (order: %d, %lu bytes)\n",
> 	       tablename,
>-	       (1U << log2qty),
>+	       (1UL << log2qty),
> 	       ilog2(size) - PAGE_SHIFT,
> 	       size);
> 
>
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