linux-kernel - Re: [PATCH] staging: erofs: make use of DBG

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Date:   Sat, 8 Jun 2019 20:11:36 +0800
From:   Gao Xiang <hsiangkao@....com>
To:     Hariprasad Kelam <hariprasad.kelam@...il.com>
Cc:     Gao Xiang <gaoxiang25@...wei.com>, Chao Yu <yuchao0@...wei.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-erofs@...ts.ozlabs.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: erofs: make use of DBG_BUGON



On 2019/6/8 ??????5:49, Hariprasad Kelam wrote:
> DBG_BUGON is introduced and it could only crash when EROFS_FS_DEBUG
> (EROFS developping feature) is on.
> replace BUG_ON with DBG_BUGON.
> 
> Signed-off-by: Hariprasad Kelam <hariprasad.kelam@...il.com>
Reviewed-by: Gao Xiang <gaoxiang25@...wei.com>

Thanks,
Gao Xiang

> ---
>  drivers/staging/erofs/unzip_vle.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/staging/erofs/unzip_vle.h b/drivers/staging/erofs/unzip_vle.h
> index 517e5ce..902e67d 100644
> --- a/drivers/staging/erofs/unzip_vle.h
> +++ b/drivers/staging/erofs/unzip_vle.h
> @@ -147,7 +147,7 @@ static inline unsigned z_erofs_onlinepage_index(struct page *page)
>  {
>  	union z_erofs_onlinepage_converter u;
>  
> -	BUG_ON(!PagePrivate(page));
> +	DBG_BUGON(!PagePrivate(page));
>  	u.v = &page_private(page);
>  
>  	return atomic_read(u.o) >> Z_EROFS_ONLINEPAGE_INDEX_SHIFT;
> @@ -179,7 +179,7 @@ static inline void z_erofs_onlinepage_fixup(struct page *page,
>  		if (!index)
>  			return;
>  
> -		BUG_ON(id != index);
> +		DBG_BUGON(id != index);
>  	}
>  
>  	v = (index << Z_EROFS_ONLINEPAGE_INDEX_SHIFT) |
> @@ -193,7 +193,7 @@ static inline void z_erofs_onlinepage_endio(struct page *page)
>  	union z_erofs_onlinepage_converter u;
>  	unsigned v;
>  
> -	BUG_ON(!PagePrivate(page));
> +	DBG_BUGON(!PagePrivate(page));
>  	u.v = &page_private(page);
>  
>  	v = atomic_dec_return(u.o);
>