Staging: hv: Get rid of request_ext_size from struct storvsc_driver_object

Now that struct storvsc_request_extension is part of struct hv_storvsc_request
get rid of the field request_ext_size from struct storvsc_driver_object.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/blkvsc_drv.c

@@ -162,8 +162,6 @@ static int blk_vsc_initialize(struct hv_driver *driver)
 	driver->name = g_blk_driver_name;
 	memcpy(&driver->dev_type, &g_blk_device_type, sizeof(struct hv_guid));
 
-	stor_driver->request_ext_size =
-	sizeof(struct storvsc_request_extension);
 
 	/*
 	 * Divide the ring buffer data size (which is 1 page less than the ring
@@ -347,8 +345,7 @@ static int blkvsc_probe(struct device *device)
 	/* 	sizeof(struct blkvsc_request)); */
 
 	blkdev->request_pool = kmem_cache_create(dev_name(&device_obj->device),
-					sizeof(struct blkvsc_request) +
-					storvsc_drv_obj->request_ext_size, 0,
+					sizeof(struct blkvsc_request), 0,
 					SLAB_HWCACHE_ALIGN, NULL);
 	if (!blkdev->request_pool) {
 		ret = -ENOMEM;

drivers/staging/hv/storvsc_api.h

@@ -97,9 +97,6 @@ struct storvsc_driver_object {
 	/* Set by caller (in bytes) */
 	u32 ring_buffer_size;
 
-	/* Allocate this much private extension for each I/O request */
-	u32 request_ext_size;
-
 	/* Maximum # of requests in flight per channel/device */
 	u32 max_outstanding_req_per_channel;
 

drivers/staging/hv/storvsc_drv.c

@@ -96,8 +96,6 @@ static int stor_vsc_initialize(struct hv_driver *driver)
 	memcpy(&driver->dev_type, &gStorVscDeviceType,
 	       sizeof(struct hv_guid));
 
-	stor_driver->request_ext_size =
-			sizeof(struct storvsc_request_extension);
 
 	/*
 	 * Divide the ring buffer data size (which is 1 page less
@@ -203,8 +201,7 @@ static int storvsc_drv_init(void)
 	drv->priv = storvsc_drv_obj;
 
 	DPRINT_INFO(STORVSC_DRV,
-		    "request extension size %u, max outstanding reqs %u",
-		    storvsc_drv_obj->request_ext_size,
+		    "max outstanding reqs %u",
 		    storvsc_drv_obj->max_outstanding_req_per_channel);
 
 	if (storvsc_drv_obj->max_outstanding_req_per_channel <
@@ -359,8 +356,7 @@ static int storvsc_probe(struct device *device)
 
 	host_device_ctx->request_pool =
 				kmem_cache_create(dev_name(&device_obj->device),
-					sizeof(struct storvsc_cmd_request) +
-					storvsc_drv_obj->request_ext_size, 0,
+					sizeof(struct storvsc_cmd_request), 0,
 					SLAB_HWCACHE_ALIGN, NULL);
 
 	if (!host_device_ctx->request_pool) {
@@ -759,8 +755,7 @@ static int storvsc_queuecommand_lck(struct scsi_cmnd *scmnd,
 
 	request = &cmd_request->request;
 
-	DPRINT_DBG(STORVSC_DRV, "req %p size %d ext %d", request, request_size,
-		   storvsc_drv_obj->request_ext_size);
+	DPRINT_DBG(STORVSC_DRV, "req %p size %d", request, request_size);
 
 	/* Build the SRB */
 	switch (scmnd->sc_data_direction) {