linux-kernel - Re: [PATCH 1/6] ext4: add missing brelse for bh2 in ext4_dx_add

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Message-ID: <2474b3df-1e58-49f5-a3b3-6cfd6e57372d@web.de>
Date: Fri, 20 Dec 2024 14:15:40 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Kemeng Shi <shikemeng@...weicloud.com>, linux-ext4@...r.kernel.org,
 Andreas Dilger <adilger.kernel@...ger.ca>, Theodore Ts'o <tytso@....edu>
Cc: linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/6] ext4: add missing brelse for bh2 in ext4_dx_add_entry

> Add missing brelse for bh2 in ext4_dx_add_entry.

* I propose to append parentheses to function names.

* How do you think about to add any tags (like “Fixes” and “Cc”) accordingly?
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.13-rc3#n145

…
> +++ b/fs/ext4/namei.c
> @@ -2580,8 +2580,10 @@ static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
>  		BUFFER_TRACE(frame->bh, "get_write_access");
>  		err = ext4_journal_get_write_access(handle, sb, frame->bh,
>  						    EXT4_JTR_NONE);
> -		if (err)
> +		if (err) {
> +			brelse(bh2);
>  			goto journal_error;
> +		}
>  		if (!add_level) {
…

I suggest to add another jump target instead so that a bit of exception handling
can be better reused at the end of this function implementation.

Regards,
Markus