linux-kernel - Re: [PATCH 10/16] ub: Convert to bdops->check

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Message-ID: <20110309094658.29c7fa54@lembas.zaitcev.lan>
Date:	Wed, 9 Mar 2011 09:46:58 -0700
From:	Pete Zaitcev <zaitcev@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	axboe@...nel.dk, linux-kernel@...r.kernel.org,
	kay.sievers@...y.org, hch@...radead.org
Subject: Re: [PATCH 10/16] ub: Convert to bdops->check_events()

On Wed,  9 Mar 2011 10:13:30 +0100
Tejun Heo <tj@...nel.org> wrote:

> +++ b/drivers/block/ub.c
> @@ -1788,7 +1788,8 @@ static int ub_bd_revalidate(struct gendisk *disk)
>   *
>   * The return code is bool!
>   */
> -static int ub_bd_media_changed(struct gendisk *disk)
> +static unsigned int ub_bd_check_events(struct gendisk *disk,
> +				       unsigned int clearing)

> -	return lun->changed;
> +	return lun->changed ? DISK_EVENT_MEDIA_CHANGE : 0;
>  }

Return code is not so bool anymore. The comment meant that usually
"int" means "return 0 on success, -1 on failure, maybe some integer
for a tricky condition" but not here. I'll have the comment fixed up,
or if you want you do it.

-- Pete
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