Re: [PATCH 2/6] floppy: remove queue_lock around floppy_end_request

[Omar Sandoval <osandov@osandov.com>]

On Fri, Nov 16, 2018 at 09:10:02AM +0100, Christoph Hellwig wrote:
> There is nothing the queue_lock could protect inside floppy_end_request,
> so remove it.

Reviewed-by: Omar Sandoval <osandov@fb.com>

> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>  drivers/block/floppy.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
> index eeb4be8d000b..218099dd8e44 100644
> --- a/drivers/block/floppy.c
> +++ b/drivers/block/floppy.c
> @@ -2254,10 +2254,7 @@ static void request_done(int uptodate)
>  		if (block > _floppy->sect)
>  			DRS->maxtrack = 1;
>  
> -		/* unlock chained buffers */
> -		spin_lock_irqsave(&q->queue_lock, flags);
>  		floppy_end_request(req, 0);
> -		spin_unlock_irqrestore(&q->queue_lock, flags);
>  	} else {
>  		if (rq_data_dir(req) == WRITE) {
>  			/* record write error information */
> @@ -2269,9 +2266,7 @@ static void request_done(int uptodate)
>  			DRWE->last_error_sector = blk_rq_pos(req);
>  			DRWE->last_error_generation = DRS->generation;
>  		}
> -		spin_lock_irqsave(&q->queue_lock, flags);
>  		floppy_end_request(req, BLK_STS_IOERR);
> -		spin_unlock_irqrestore(&q->queue_lock, flags);
>  	}
>  }
>  
> -- 
> 2.19.1
>