linux-kernel - Re: [PATCH linux-next] ocfs2: fix bugon.cocci warnings

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Date:   Sun, 29 Aug 2021 21:23:52 +0800
From:   Joseph Qi <joseph.qi@...ux.alibaba.com>
To:     CGEL <cgel.zte@...il.com>, Mark Fasheh <mark@...heh.com>,
        akpm <akpm@...ux-foundation.org>
Cc:     Joel Becker <jlbec@...lplan.org>, ocfs2-devel@....oracle.com,
        linux-kernel@...r.kernel.org,
        Changcheng Deng <deng.changcheng@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: Re: [PATCH linux-next] ocfs2: fix bugon.cocci warnings



On 8/28/21 9:04 AM, CGEL wrote:
> From: Changcheng Deng <deng.changcheng@....com.cn>
> 
> Use BUG_ON instead of if condition followed by BUG.
> 
> Reported-by: Zeal Robot <zealci@....com.cn>
> Signed-off-by: Changcheng Deng <deng.changcheng@....com.cn>

Acked-by: Joseph Qi <joseph.qi@...ux.alibaba.com>

BTW, could you send out a series to clean all in ocfs2?

> ---
>  fs/ocfs2/journal.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
> index 4f15750..2305aa5 100644
> --- a/fs/ocfs2/journal.c
> +++ b/fs/ocfs2/journal.c
> @@ -974,8 +974,7 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb)
>  		goto done;
>  
>  	/* need to inc inode use count - jbd2_journal_destroy will iput. */
> -	if (!igrab(inode))
> -		BUG();
> +	BUG_ON(!igrab(inode));
>  
>  	num_running_trans = atomic_read(&(osb->journal->j_num_trans));
>  	trace_ocfs2_journal_shutdown(num_running_trans);
> @@ -1656,8 +1655,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
>  	status = jbd2_journal_load(journal);
>  	if (status < 0) {
>  		mlog_errno(status);
> -		if (!igrab(inode))
> -			BUG();
> +		BUG_ON(!igrab(inode));
>  		jbd2_journal_destroy(journal);
>  		goto done;
>  	}
> @@ -1686,8 +1684,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
>  	if (status < 0)
>  		mlog_errno(status);
>  
> -	if (!igrab(inode))
> -		BUG();
> +	BUG_ON(!igrab(inode));
>  
>  	jbd2_journal_destroy(journal);
>  
>