函数逻辑报告

函数名称：This routine checks whether a removable media has been changed,* and invalidates all buffer-cache-entries in that case. This* is a relatively slow routine, so we have to try to minimize using* it. Thus it is called only upon a 'mount' or 'open'. This

函数原型：int check_disk_change(struct block_device *bdev)

返回类型：int

参数：