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Re: [PATCH] XFS; xfs_trans_add_item() - don't assign in ASSERT() when co

To: xfs@xxxxxxxxxxx
Subject: Re: [PATCH] XFS; xfs_trans_add_item() - don't assign in ASSERT() when compare is intended
From: Jesper Juhl <jj@xxxxxxxxxxxxx>
Date: Mon, 13 Feb 2012 21:52:37 +0100 (CET)
Cc: xfs-masters@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Alex Elder <elder@xxxxxxxxxx>, Ben Myers <bpm@xxxxxxx>
In-reply-to: <alpine.LNX.2.00.1202132149270.16039@xxxxxxxxxxxxxxxxxxxxxxxxx>
References: <alpine.LNX.2.00.1202132149270.16039@xxxxxxxxxxxxxxxxxxxxxxxxx>
User-agent: Alpine 2.00 (LNX 1167 2008-08-23)
On Mon, 13 Feb 2012, Jesper Juhl wrote:

> It looks to me like the two ASSERT()s in xfs_trans_add_item() really
> want to do a compare (==) rather than assignment (=).
> This patch changes it from the former to the latter.
> 
Ehh, I mean from the latter to the former, of course.. :-/

> I must admit though, that I don't know this code well and have only
> compile tested this change. But if assignment is really intended it
> really seems strange to do it as part of an ASSERT...
> 
> Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx>
> ---
>  fs/xfs/xfs_trans.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
> index 329b06a..7adcdf1 100644
> --- a/fs/xfs/xfs_trans.c
> +++ b/fs/xfs/xfs_trans.c
> @@ -1151,8 +1151,8 @@ xfs_trans_add_item(
>  {
>       struct xfs_log_item_desc *lidp;
>  
> -     ASSERT(lip->li_mountp = tp->t_mountp);
> -     ASSERT(lip->li_ailp = tp->t_mountp->m_ail);
> +     ASSERT(lip->li_mountp == tp->t_mountp);
> +     ASSERT(lip->li_ailp == tp->t_mountp->m_ail);
>  
>       lidp = kmem_zone_zalloc(xfs_log_item_desc_zone, KM_SLEEP | KM_NOFS);
>  
> 

-- 
Jesper Juhl <jj@xxxxxxxxxxxxx>       http://www.chaosbits.net/
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