linux-kernel - [patch] hugetlbfs: fix build failure on 64-bit x86

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Message-ID: <20080726091654.GA18341@elte.hu>
Date:	Sat, 26 Jul 2008 11:16:54 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [patch] hugetlbfs: fix build failure on 64-bit x86


[resend, still relevant to -git]

>From 5215af24a20e5f448ee45cd1d97c4118b876c0f6 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@...e.hu>
Date: Fri, 25 Jul 2008 20:45:52 +0200
Subject: [PATCH] hugetlbfs: fix build failure on 64-bit x86

fix:

 arch/x86/mm/built-in.o: In function `setup_hugepagesz':
 hugetlbpage.c:(.init.text+0xb49): undefined reference to `hugetlb_add_hstate'

Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/mm/hugetlbpage.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 8f307d9..977d185 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -425,7 +425,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 
 #endif /*HAVE_ARCH_HUGETLB_UNMAPPED_AREA*/
 
-#ifdef CONFIG_X86_64
+#if defined(CONFIG_X86_64) && defined(CONFIG_SYSCTL)
 static __init int setup_hugepagesz(char *opt)
 {
 	unsigned long ps = memparse(opt, &opt);
--
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