Staging: hv: Move the definition of struct storvsc_request_extension

In preparation for getting rid of the inclusion of storvsc.c from
blkvsc.c, move the definition of struct storvsc_request_extension
from storvsc.c to storvsc_api.h.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/hv/storvsc_api.h b/drivers/staging/hv/storvsc_api.h
index fbf5755..629144c 100644
--- a/drivers/staging/hv/storvsc_api.h
+++ b/drivers/staging/hv/storvsc_api.h
@@ -25,6 +25,7 @@
 #ifndef _STORVSC_API_H_
 #define _STORVSC_API_H_
 
+#include "vstorage.h"
 #include "vmbus_api.h"
 
 /* Defines */
@@ -102,6 +103,17 @@
 	unsigned char target_id;
 };
 
+struct storvsc_request_extension {
+	struct hv_storvsc_request *request;
+	struct hv_device *device;
+
+	/* Synchronize the request/response if needed */
+	int wait_condition;
+	wait_queue_head_t wait_event;
+
+	struct vstor_packet vstor_packet;
+};
+
 /* Interface */
 int stor_vsc_initialize(struct hv_driver *driver);
 int stor_vsc_on_host_reset(struct hv_device *device);