linux-kernel - Re: [PATCH] [17/23] EXT3: Fix set but unused variables

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Message-ID: <20100615140132.GB18513@atrey.karlin.mff.cuni.cz>
Date:	Tue, 15 Jun 2010 16:01:32 +0200
From:	Jan Kara <jack@...e.cz>
To:	tytso@....edu, Andi Kleen <andi@...stfloor.org>,
	linux-ext4@...r.kernel.org, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [17/23] EXT3: Fix set but unused variables

> On Thu, Jun 10, 2010 at 01:10:53PM +0200, Andi Kleen wrote:
> > Index: linux-2.6.35-rc2-gcc/fs/jbd/recovery.c
> > ===================================================================
> > --- linux-2.6.35-rc2-gcc.orig/fs/jbd/recovery.c
> > +++ linux-2.6.35-rc2-gcc/fs/jbd/recovery.c
> > @@ -283,12 +283,10 @@ int journal_recover(journal_t *journal)
> >  int journal_skip_recovery(journal_t *journal)
> >  {
> >  	int			err;
> > -	journal_superblock_t *	sb;
> >  
> >  	struct recovery_info	info;
> >  
> >  	memset (&info, 0, sizeof(info));
> > -	sb = journal->j_superblock;
> 
> Oops, spoke too soon.  This will cause a compile error if
> CONFIG_JBD_DEBUG is defined.
> 
> The following pesudo-patch is required:
> 
>  #ifdef CONFIG_JBD_DEBUG
> -		int dropped = info.end_transaction - be32_to_cpu(sb->s_sequence);
> +		int dropped = info.end_transaction - 
> +				be32_to_cpu(journal->j_superblock->s_sequence);
>  #endif
  I have merged the patch with your fix to my tree.

								Honza
-- 
Jan Kara <jack@...e.cz>
SuSE CR Labs
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