linux-kernel - Re: [PATCH v4 1/3] block: simplify calling convention of elv_unregister

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Date:   Mon, 24 Jan 2022 23:25:32 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-api@...r.kernel.org, linux-scsi@...r.kernel.org,
        linux-mmc@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bart Van Assche <bvanassche@....org>,
        Hannes Reinecke <hare@...e.de>
Subject: Re: [PATCH v4 1/3] block: simplify calling convention of
 elv_unregister_queue()

On Mon, Jan 24, 2022 at 01:59:36PM -0800, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@...gle.com>
> 
> Make elv_unregister_queue() a no-op if q->elevator is NULL or is not
> registered.
> 
> This simplifies the existing callers, as well as the future caller in
> the error path of blk_register_queue().
> 
> Also don't bother checking whether q is NULL, since it never is.
> 
> Reviewed-by: Hannes Reinecke <hare@...e.de>
> Reviewed-by: Bart Van Assche <bvanassche@....org>
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>