From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 12 Mar 2008 20:24:31 +0000 (+1100)
Subject: [POWERPC] Export empty_zero_page
X-Git-Tag: v2.6.25-rc6~30^2~1
X-Git-Url: http://git.cascardo.eti.br/?a=commitdiff_plain;h=07dc42f632e335a03c0e780805dc9dc141f83e63;p=cascardo%2Flinux.git

[POWERPC] Export empty_zero_page

Once again, this time with feeling....

						- Ted

>From c91cfaabc17f8a53807a2f31f067a732e34a1550 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 12 Mar 2008 11:50:39 -0400
Subject: Export empty_zero_page

The empty_zero_page symbol is exported by most other architectures
(s390, ia64, x86, um), and an upcoming ext4 patch needs it because
ZERO_PAGE() references empty_zero_page, and we need it to zero out an
unitialized extents in ext4 files.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 3e52122c5073..9c98424277a8 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -58,6 +58,7 @@ extern void program_check_exception(struct pt_regs *regs);
 extern void single_step_exception(struct pt_regs *regs);
 extern int sys_sigreturn(struct pt_regs *regs);
 
+EXPORT_SYMBOL(empty_zero_page);
 EXPORT_SYMBOL(clear_pages);
 EXPORT_SYMBOL(copy_page);
 EXPORT_SYMBOL(ISA_DMA_THRESHOLD);