blk_trace_ioctl   771 block/compat_ioctl.c 		return blk_trace_ioctl(bdev, cmd, compat_ptr(arg));
blk_trace_ioctl   263 block/ioctl.c  		return blk_trace_ioctl(bdev, cmd, (char __user *) arg);
blk_trace_ioctl   158 include/linux/blktrace_api.h extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);