[PATCH] Remove Scsi_Host.uspace_req_q

[PATCH] Remove Scsi_Host.uspace_req_q

[Bart Van Assche]

A patch I wrote myself several years ago removed SCSI target
support from the code under drivers/scsi. That patch removed the
code that sets uspace_req_q to a non-NULL value. Hence also
remove the code that depends on uspace_req_q != NULL.

References: commit 066465251303 ("tgt: removal")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
---
 drivers/scsi/hosts.c     | 8 --------
 include/scsi/scsi_host.h | 6 ------
 2 files changed, 14 deletions(-)

diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 831a1c8b9f89..fe3a0da3ec97 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -315,8 +315,6 @@ static void scsi_host_dev_release(struct device *dev)
 {
 	struct Scsi_Host *shost = dev_to_shost(dev);
 	struct device *parent = dev->parent;
-	struct request_queue *q;
-	void *queuedata;
 
 	scsi_proc_hostdir_rm(shost->hostt);
 
@@ -326,12 +324,6 @@ static void scsi_host_dev_release(struct device *dev)
 		kthread_stop(shost->ehandler);
 	if (shost->work_q)
 		destroy_workqueue(shost->work_q);
-	q = shost->uspace_req_q;
-	if (q) {
-		queuedata = q->queuedata;
-		blk_cleanup_queue(q);
-		kfree(queuedata);
-	}
 
 	if (shost->shost_state == SHOST_CREATED) {
 		/*
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index afb04811b7b9..0a804b1a4726 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -691,12 +691,6 @@ struct Scsi_Host {
 	unsigned int prot_capabilities;
 	unsigned char prot_guard_type;
 
-	/*
-	 * q used for scsi_tgt msgs, async events or any other requests that
-	 * need to be processed in userspace
-	 */
-	struct request_queue *uspace_req_q;
-
 	/* legacy crap */
 	unsigned long base;
 	unsigned long io_port;
-- 
2.14.1

Re: [PATCH] Remove Scsi_Host.uspace_req_q

[Johannes Thumshirn]

Looks good,
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
-- 
Johannes Thumshirn                                          Storage
jthumshirn@suse.de                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850

Re: [PATCH] Remove Scsi_Host.uspace_req_q

[Christoph Hellwig]

Looks fine,

Reviewed-by: Christoph Hellwig <hch@lst.de>

Re: [PATCH] Remove Scsi_Host.uspace_req_q

[Martin K. Petersen]

Bart,

> A patch I wrote myself several years ago removed SCSI target support
> from the code under drivers/scsi. That patch removed the code that
> sets uspace_req_q to a non-NULL value. Hence also remove the code that
> depends on uspace_req_q != NULL.

Applied to 4.14/scsi-queue. Thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering