函数逻辑报告

函数名称：MAP_SYNC on a dax mapping guarantees dirty metadata is* flushed on write-faults (non-cow), but not read-faults.

函数原型：static bool dax_fault_is_synchronous(unsigned long flags, struct vm_area_struct *vma, struct iomap *iomap)

返回类型：bool

参数：