linux-ext4 - Re: [PATCH v4 12/12] ext4: make ext4_zeroout

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Date:   Wed, 3 May 2023 16:33:06 +0200
From:   Jan Kara <jack@...e.cz>
To:     Baokun Li <libaokun1@...wei.com>
Cc:     linux-ext4@...r.kernel.org, tytso@....edu,
        adilger.kernel@...ger.ca, jack@...e.cz, ritesh.list@...il.com,
        linux-kernel@...r.kernel.org, yi.zhang@...wei.com,
        yangerkun@...wei.com, yukuai3@...wei.com
Subject: Re: [PATCH v4 12/12] ext4: make ext4_zeroout_es() return void

On Mon 24-04-23 11:38:46, Baokun Li wrote:
> After ext4_es_insert_extent() returns void, the return value in
> ext4_zeroout_es() is also unnecessary, so make it return void too.
> 
> Signed-off-by: Baokun Li <libaokun1@...wei.com>

Looks good to me. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/ext4/extents.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
> index d555ed924f37..6c3080830b00 100644
> --- a/fs/ext4/extents.c
> +++ b/fs/ext4/extents.c
> @@ -3123,7 +3123,7 @@ void ext4_ext_release(struct super_block *sb)
>  #endif
>  }
>  
> -static int ext4_zeroout_es(struct inode *inode, struct ext4_extent *ex)
> +static void ext4_zeroout_es(struct inode *inode, struct ext4_extent *ex)
>  {
>  	ext4_lblk_t  ee_block;
>  	ext4_fsblk_t ee_pblock;
> @@ -3134,11 +3134,10 @@ static int ext4_zeroout_es(struct inode *inode, struct ext4_extent *ex)
>  	ee_pblock = ext4_ext_pblock(ex);
>  
>  	if (ee_len == 0)
> -		return 0;
> +		return;
>  
>  	ext4_es_insert_extent(inode, ee_block, ee_len, ee_pblock,
>  			      EXTENT_STATUS_WRITTEN);
> -	return 0;
>  }
>  
>  /* FIXME!! we need to try to merge to left or right after zero-out  */
> @@ -3288,7 +3287,7 @@ static int ext4_split_extent_at(handle_t *handle,
>  			err = ext4_ext_dirty(handle, inode, path + path->p_depth);
>  			if (!err)
>  				/* update extent status tree */
> -				err = ext4_zeroout_es(inode, &zero_ex);
> +				ext4_zeroout_es(inode, &zero_ex);
>  			/* If we failed at this point, we don't know in which
>  			 * state the extent tree exactly is so don't try to fix
>  			 * length of the original extent as it may do even more
> @@ -3641,9 +3640,8 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
>  out:
>  	/* If we have gotten a failure, don't zero out status tree */
>  	if (!err) {
> -		err = ext4_zeroout_es(inode, &zero_ex1);
> -		if (!err)
> -			err = ext4_zeroout_es(inode, &zero_ex2);
> +		ext4_zeroout_es(inode, &zero_ex1);
> +		ext4_zeroout_es(inode, &zero_ex2);
>  	}
>  	return err ? err : allocated;
>  }
> -- 
> 2.31.1
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR