linux-kernel - Re: Linux 2.6.20-rc6

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Message-ID: <20070126184659.GA8176@ca-server1.us.oracle.com>
Date:	Fri, 26 Jan 2007 10:46:59 -0800
From:	Mark Fasheh <mark.fasheh@...cle.com>
To:	Eyal Lebedinsky <eyal@...l.emu.id.au>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.20-rc6 - build failure

On Thu, Jan 25, 2007 at 10:10:00PM +1100, Eyal Lebedinsky wrote:
> WARNING: "__udivdi3" [fs/ocfs2/ocfs2.ko] undefined!

Doh! This one is almost definitely my fault. Does the attached patch get rid
of that warning for you?


From: Mark Fasheh <mark.fasheh@...cle.com>
ocfs2: fix thinko in ocfs2_backup_super_blkno()

Fix a bug which was introduced when I synced up ocfs2_fs.h with ocfs2-tools.
We can't do u64/u32 in kernel.

Signed-off-by: Mark Fasheh <mark.fasheh@...cle.com>
---
 fs/ocfs2/ocfs2_fs.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index c99e905..e61e218 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -587,7 +587,7 @@ static inline u64 ocfs2_backup_super_blkno(struct super_block *sb, int index)
 
 	if (index >= 0 && index < OCFS2_MAX_BACKUP_SUPERBLOCKS) {
 		offset <<= (2 * index);
-		offset /= sb->s_blocksize;
+		offset >>= sb->s_blocksize_bits;
 		return offset;
 	}
 
-- 
1.4.4.2

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