aio

2、As a general rule, device drivers will not need to implement aio_fsync .

1、一般來説，設備驅動程序不需要實現aio_fsync 。

3、The aio_fsync() method serves the same purpose as the fsync() method; its purpose is to ensure that all pending data are written to disk.

4、aio_fsync()的目的與fsync()相同：確保所有未決的數據都寫入到磁盤了。