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SubjectRe: [PATCH 02/14] scsi: split __scsi_queue_insert
On 06/25/2014 06:51 PM, Christoph Hellwig wrote:
> Factor out a helper to set the _blocked values, which we'll reuse for the
> blk-mq code path.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> drivers/scsi/scsi_lib.c | 44 ++++++++++++++++++++++++++------------------
> 1 file changed, 26 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
> index d5d22e4..2667c75 100644
> --- a/drivers/scsi/scsi_lib.c
> +++ b/drivers/scsi/scsi_lib.c
> @@ -75,28 +75,12 @@ struct kmem_cache *scsi_sdb_cache;
> */
> #define SCSI_QUEUE_DELAY 3
>
> -/**
> - * __scsi_queue_insert - private queue insertion
> - * @cmd: The SCSI command being requeued
> - * @reason: The reason for the requeue
> - * @unbusy: Whether the queue should be unbusied
> - *
> - * This is a private queue insertion. The public interface
> - * scsi_queue_insert() always assumes the queue should be unbusied
> - * because it's always called before the completion. This function is
> - * for a requeue after completion, which should only occur in this
> - * file.
> - */
> -static void __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy)
> +static void
> +scsi_set_blocked(struct scsi_cmnd *cmd, int reason)
> {
> struct Scsi_Host *host = cmd->device->host;
> struct scsi_device *device = cmd->device;
> struct scsi_target *starget = scsi_target(device);
> - struct request_queue *q = device->request_queue;
> - unsigned long flags;
> -
> - SCSI_LOG_MLQUEUE(1, scmd_printk(KERN_INFO, cmd,
> - "Inserting command %p into mlqueue\n", cmd));
>
> /*
> * Set the appropriate busy bit for the device/host.
> @@ -123,6 +107,30 @@ static void __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy)
> starget->target_blocked = starget->max_target_blocked;
> break;
> }
> +}
> +
> +/**
> + * __scsi_queue_insert - private queue insertion
> + * @cmd: The SCSI command being requeued
> + * @reason: The reason for the requeue
> + * @unbusy: Whether the queue should be unbusied
> + *
> + * This is a private queue insertion. The public interface
> + * scsi_queue_insert() always assumes the queue should be unbusied
> + * because it's always called before the completion. This function is
> + * for a requeue after completion, which should only occur in this
> + * file.
> + */
> +static void __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy)
> +{
> + struct scsi_device *device = cmd->device;
> + struct request_queue *q = device->request_queue;
> + unsigned long flags;
> +
> + SCSI_LOG_MLQUEUE(1, scmd_printk(KERN_INFO, cmd,
> + "Inserting command %p into mlqueue\n", cmd));
> +
> + scsi_set_blocked(cmd, reason);
>
> /*
> * Decrement the counters, since these commands are no longer
>
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@suse.de +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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