linux-kernel - Re: [PATCH] 9p: Use BUG_ON instead of if condition followed by BUG.

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Date:   Sat, 18 Dec 2021 20:16:44 +0900
From:   asmadeus@...ewreck.org
To:     cgel.zte@...il.com
Cc:     ericvh@...il.com, lucho@...kov.net,
        v9fs-developer@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
        Zhang Mingyu <zhang.mingyu@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: Re: [PATCH] 9p: Use BUG_ON instead of if condition followed by BUG.

cgel.zte@...il.com wrote on Fri, Nov 12, 2021 at 09:25:47AM +0000:
> From: Zhang Mingyu <zhang.mingyu@....com.cn>
> 
> This issue was detected with the help of Coccinelle.
> 
> Reported-by: Zeal Robot <zealci@....com.cn>
> Signed-off-by: Zhang Mingyu <zhang.mingyu@....com.cn>

I realize I've never replied to this mail when applying old patches now,
I've picked this up too.

> ---
>  fs/9p/vfs_file.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
> index 4244d48398ef..f2375448cafc 100644
> --- a/fs/9p/vfs_file.c
> +++ b/fs/9p/vfs_file.c
> @@ -139,8 +139,7 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl)
>  	fid = filp->private_data;
>  	BUG_ON(fid == NULL);
>  
> -	if ((fl->fl_flags & FL_POSIX) != FL_POSIX)
> -		BUG();
> +	BUG_ON((fl->fl_flags & FL_POSIX) != FL_POSIX);
>  
>  	res = locks_lock_file_wait(filp, fl);
>  	if (res < 0)

-- 
Dominique