linux-kernel - Re: [PATCH] ext4: remove unneeded check of nr_to

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Date:   Thu, 16 Mar 2023 21:58:36 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Tom Rix <trix@...hat.com>
Cc:     tytso@....edu, adilger.kernel@...ger.ca,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ext4: remove unneeded check of nr_to_submit

On Thu, Mar 16, 2023 at 04:48:31PM -0400, Tom Rix wrote:
> cppcheck reports
> fs/ext4/page-io.c:516:51: style:
>   Condition 'nr_to_submit' is always true [knownConditionTrueFalse]
>  if (fscrypt_inode_uses_fs_layer_crypto(inode) && nr_to_submit) {
>                                                   ^
> This earlier check to bail, makes this check unncessary
> 	/* Nothing to submit? Just unlock the page... */
> 	if (!nr_to_submit)
> 		return 0;
> 
> Signed-off-by: Tom Rix <trix@...hat.com>

Maybe add:

Fixes: dff4ac75eeee ("ext4: move keep_towrite handling to ext4_bio_write_page()")

Either way, looks good to me.

Reviewed-by: Eric Biggers <ebiggers@...gle.com>

- Eric