Re: [PATCH 1/1] dasd: fix double elevator_exit call when deadline iosched fails to load

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On Wed, Mar 05, 2008 at 06:02:03PM -0500, Josef 'Jeff' Sipek wrote:
> Signed-off-by: Josef 'Jeff' Sipek <jeffpc@xxxxxxxxxxxxxx>
> ---
>  drivers/s390/block/Kconfig |    2 +-
>  drivers/s390/block/dasd.c  |    1 +
>  2 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/s390/block/Kconfig b/drivers/s390/block/Kconfig
> index e879b21..b224a1f 100644
> --- a/drivers/s390/block/Kconfig
> +++ b/drivers/s390/block/Kconfig
> @@ -19,7 +19,7 @@ config DCSSBLK
> 
>  config DASD
>  	tristate "Support for DASD devices"
> -	depends on CCW && BLOCK
> +	depends on CCW && IOSCHED_DEADLINE && BLOCK
>  	help
>  	  Enable this option if you want to access DASDs directly utilizing
>  	  S/390s channel subsystem commands. This is necessary for running
> diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
> index ccf46c9..54f686d 100644
> --- a/drivers/s390/block/dasd.c
> +++ b/drivers/s390/block/dasd.c
> @@ -1956,6 +1956,7 @@ static int dasd_alloc_queue(struct dasd_block *block)
>  	block->request_queue->queuedata = block;
> 
>  	elevator_exit(block->request_queue->elevator);
> +	block->request_queue->elevator = NULL;
>  	rc = elevator_init(block->request_queue, "deadline");
>  	if (rc) {
>  		blk_cleanup_queue(block->request_queue);

Added to our patch queue with a modified description. Thanks!
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