Re: [PATCH] virtio-blk: put request that was created to retrieve the device id

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On Thu, Sep 09, 2010 at 05:00:42PM -0400, Mike Snitzer wrote:
> diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
> index 1260628..831e75c 100644
> --- a/drivers/block/virtio_blk.c
> +++ b/drivers/block/virtio_blk.c
> @@ -199,6 +199,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
>  	struct virtio_blk *vblk = disk->private_data;
>  	struct request *req;
>  	struct bio *bio;
> +	int err;
>  
>  	bio = bio_map_kern(vblk->disk->queue, id_str, VIRTIO_BLK_ID_BYTES,
>  			   GFP_KERNEL);
> @@ -212,7 +213,10 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
>  	}
>  
>  	req->cmd_type = REQ_TYPE_SPECIAL;
> -	return blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
> +	err = blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
> +	blk_put_request(req);

This looks correct as far as the request is concerned, but we're still
leaking the bio.

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