[SCSI] storvsc: Increase the value of STORVSC_MAX_IO_REQUESTS

Increase the value of STORVSC_MAX_IO_REQUESTS to 200 requests. The current
ringbuffer size can support this higher value.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

drivers/scsi/storvsc_drv.c

@@ -326,7 +326,7 @@ MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");
  */
 static int storvsc_timeout = 180;
 
-#define STORVSC_MAX_IO_REQUESTS				128
+#define STORVSC_MAX_IO_REQUESTS				200
 
 static void storvsc_on_channel_callback(void *context);