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Re: [PATCH 4/5] btrfs: Use common error handling code in update_ref_path()

From Jeff Mahoney <jeffm@suse.com>
Newsgroups linux.kernel
Subject Re: [PATCH 4/5] btrfs: Use common error handling code in update_ref_path()
Date 2017-08-21 15:10 +0200
Message-ID <ugUCS-4Nm-13@gated-at.bofh.it> (permalink)
References <ugU9P-4ml-11@gated-at.bofh.it> <ugUjw-4pR-15@gated-at.bofh.it>
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On 8/21/17 8:41 AM, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Mon, 21 Aug 2017 13:34:29 +0200
> 
> Add a jump target so that a bit of exception handling can be better reused
> in this function.
> 
> This issue was detected by using the Coccinelle software.

Adding a jump label in the middle of a conditional for "common" error
handling makes the code more difficult to understand.

-Jeff

> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
>  fs/btrfs/send.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
> index 59fb1ed6ca20..a96edc91a101 100644
> --- a/fs/btrfs/send.c
> +++ b/fs/btrfs/send.c
> @@ -3697,12 +3697,12 @@ static int update_ref_path(struct send_ctx *sctx, struct recorded_ref *ref)
>  		return -ENOMEM;
>  
>  	ret = get_cur_path(sctx, ref->dir, ref->dir_gen, new_path);
> -	if (ret < 0) {
> -		fs_path_free(new_path);
> -		return ret;
> -	}
> +	if (ret < 0)
> +		goto free_path;
> +
>  	ret = fs_path_add(new_path, ref->name, ref->name_len);
>  	if (ret < 0) {
> +free_path:
>  		fs_path_free(new_path);
>  		return ret;
>  	}
> 


-- 
Jeff Mahoney
SUSE Labs

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Thread

[PATCH 0/5] BTRFS: Fine-tuning for five function implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-21 14:40 +0200
  [PATCH 2/5] btrfs: Use common error handling code in  __btrfs_free_extent() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-21 14:40 +0200
    Re: [PATCH 2/5] btrfs: Use common error handling code in  __btrfs_free_extent() Jeff Mahoney <jeffm@suse.com> - 2017-08-21 15:10 +0200
      Re: [PATCH 2/5] btrfs: Use common error handling code in  __btrfs_free_extent() Dan Carpenter <dan.carpenter@oracle.com> - 2017-08-21 15:20 +0200
  [PATCH 4/5] btrfs: Use common error handling code in  update_ref_path() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-21 14:50 +0200
    Re: [PATCH 4/5] btrfs: Use common error handling code in  update_ref_path() Jeff Mahoney <jeffm@suse.com> - 2017-08-21 15:10 +0200
      Re: [PATCH 4/5] btrfs: Use common error handling code in  update_ref_path() Dan Carpenter <dan.carpenter@oracle.com> - 2017-08-21 15:50 +0200
        [PATCH v2] btrfs: Use common error handling code in update_ref_path() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-21 16:00 +0200
  [PATCH 5/5] btrfs: Use common error handling code in  btrfs_mark_extent_written() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-21 14:50 +0200
    Re: [PATCH 5/5] btrfs: Use common error handling code in  btrfs_mark_extent_written() Jeff Mahoney <jeffm@suse.com> - 2017-08-21 15:10 +0200
  [PATCH 3/5] btrfs: Use common error handling code in  btrfs_update_root() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-21 14:50 +0200
    Re: [PATCH 3/5] btrfs: Use common error handling code in  btrfs_update_root() Jeff Mahoney <jeffm@suse.com> - 2017-08-21 15:10 +0200
  Re: [PATCH 0/5] BTRFS: Fine-tuning for five function implementations David Sterba <dsterba@suse.cz> - 2017-08-21 15:30 +0200

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