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Date:   Fri, 1 May 2020 17:25:05 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Luis Chamberlain <mcgrof@...nel.org>, axboe@...nel.dk,
        viro@...iv.linux.org.uk, gregkh@...uxfoundation.org,
        rostedt@...dmis.org, mingo@...hat.com, jack@...e.cz,
        ming.lei@...hat.com, nstange@...e.de, akpm@...ux-foundation.org
Cc:     mhocko@...e.com, yukuai3@...wei.com, linux-block@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/6] blktrace: move blktrace debugfs creation to helper
 function

On 2020-04-29 00:46, Luis Chamberlain wrote:
> +static struct dentry *blk_trace_debugfs_dir(struct blk_user_trace_setup *buts,
> +					    struct blk_trace *bt)
> +{
> +	struct dentry *dir = NULL;
> +
> +	dir = debugfs_lookup(buts->name, blk_debugfs_root);
> +	if (!dir)
> +		bt->dir = dir = debugfs_create_dir(buts->name, blk_debugfs_root);
> +
> +	return dir;
> +}

Initializing 'dir' is not necessary since the first statement overwrites
'dir'. Anyway:

Reviewed-by: Bart Van Assche <bvanassche@....org>

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