95 	struct mutex dev_mutex;  member
230 	mutex_lock(&dev->dev_mutex);  in ubiblock_open()
260 	mutex_unlock(&dev->dev_mutex);  in ubiblock_open()
264 	mutex_unlock(&dev->dev_mutex);  in ubiblock_open()
272 	mutex_lock(&dev->dev_mutex);  in ubiblock_release()
278 	mutex_unlock(&dev->dev_mutex);  in ubiblock_release()
380 	mutex_init(&dev->dev_mutex);  in ubiblock_create()
493 	mutex_lock(&dev->dev_mutex);  in ubiblock_remove()
495 		mutex_unlock(&dev->dev_mutex);  in ubiblock_remove()
505 	mutex_unlock(&dev->dev_mutex);  in ubiblock_remove()
533 	mutex_lock(&dev->dev_mutex);  in ubiblock_resize()
540 	mutex_unlock(&dev->dev_mutex);  in ubiblock_resize()