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    From"Eric W. Biederman" <>
    Subject[PATCH] sas_scsi_host: Convert to use the kthread API
    DateThu, 19 Apr 2007 00:55:33 -0600
    From: Eric W. Biederman <ebiederm@xmission.com> - unquoted
    
    This patch modifies the sas scsi host thread startup
    to use kthread_run not kernel_thread and deamonize.
    kthread_run is slightly simpler and more maintainable.
    
    Cc: Darrick J. Wong <djwong@us.ibm.com>
    Cc: James Bottomley <James.Bottomley@SteelEye.com>
    Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
    ---
     drivers/scsi/libsas/sas_scsi_host.c |   11 ++++++-----
     1 files changed, 6 insertions(+), 5 deletions(-)
    diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
    index 46ba3a7..7a38ac5 100644
    --- a/drivers/scsi/libsas/sas_scsi_host.c
    +++ b/drivers/scsi/libsas/sas_scsi_host.c
    @@ -40,6 +40,7 @@
     #include <linux/blkdev.h>
     #include <linux/scatterlist.h>
     #include <linux/freezer.h>
    +#include <linux/kthread.h>
     
     /* ---------- SCSI Host glue ---------- */
     
    @@ -870,7 +871,6 @@ static int sas_queue_thread(void *_sas_ha)
     	struct sas_ha_struct *sas_ha = _sas_ha;
     	struct scsi_core *core = &sas_ha->core;
     
    -	daemonize("sas_queue_%d", core->shost->host_no);
     	current->flags |= PF_NOFREEZE;
     
     	complete(&queue_th_comp);
    @@ -891,19 +891,20 @@ static int sas_queue_thread(void *_sas_ha)
     
     int sas_init_queue(struct sas_ha_struct *sas_ha)
     {
    -	int res;
     	struct scsi_core *core = &sas_ha->core;
    +	struct task_struct *task;
     
     	spin_lock_init(&core->task_queue_lock);
     	core->task_queue_size = 0;
     	INIT_LIST_HEAD(&core->task_queue);
     	init_MUTEX_LOCKED(&core->queue_thread_sema);
     
    -	res = kernel_thread(sas_queue_thread, sas_ha, 0);
    -	if (res >= 0)
    +	task = kthread_run(sas_queue_thread, sas_ha,
    +			   "sas_queue_%d", core->shost->host_no);
    +	if (!IS_ERR(task))
     		wait_for_completion(&queue_th_comp);
     
    -	return res < 0 ? res : 0;
    +	return IS_ERR(task) ? PTR_ERR(task) : 0;
     }
     
     void sas_shutdown_queue(struct sas_ha_struct *sas_ha)
    -- 
    1.5.0.g53756
    -
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