linux-kernel - Re: [PATCH v3 3/6] block: refactor sysfs code

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Message-ID: <YNMgmK2vqQPL7PWb@infradead.org>
Date:   Wed, 23 Jun 2021 12:52:56 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Matteo Croce <mcroce@...ux.microsoft.com>
Cc:     linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
        Lennart Poettering <lennart@...ttering.net>,
        Luca Boccassi <bluca@...ian.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Damien Le Moal <damien.lemoal@....com>,
        Tejun Heo <tj@...nel.org>,
        Javier Gonz??lez <javier@...igon.com>,
        Niklas Cassel <niklas.cassel@....com>,
        Johannes Thumshirn <johannes.thumshirn@....com>,
        Hannes Reinecke <hare@...e.de>,
        Matthew Wilcox <willy@...radead.org>,
        Christoph Hellwig <hch@...radead.org>,
        JeffleXu <jefflexu@...ux.alibaba.com>
Subject: Re: [PATCH v3 3/6] block: refactor sysfs code

> -static void disk_add_events(struct gendisk *disk)
> +static void disk_add_sysfs(struct gendisk *disk)
>  {
>  	/* FIXME: error handling */
> -	if (sysfs_create_files(&disk_to_dev(disk)->kobj, disk_events_attrs) < 0)
> +	if (sysfs_create_files(&disk_to_dev(disk)->kobj, disk_sysfs_attrs) < 0)
>  		pr_warn("%s: failed to create sysfs files for events\n",
>  			disk->disk_name);
> +}

Actually, what we need here is a way how we can setup the ->groups
field of the device to include all attribute groups instead of having
to call sysfs_create_files at all.