Thanks for the review!

> One question is why reply_fsync is defined as volatile variable?
> Sorry I could not understand reason of that.

It was affected to time_to_abort -- since it is unnecessary, it deletes. 

> Currently patch modifies argument of some function (e.g., Handle
> CopyStream, Process LogDate Msg), and add the similar code to each
> function.
> I don't think it is good approach.
> For example, I think that we should gather these code into one function.

Feedback was judged immediately after each fsync until now. 
I revised it in reference to walreceiver.
Feedback of fsync is judged together with the judgment of --status-interval.
Thereby, the specification to an argument became minimum. 

Regards,

--
Furuya Osamu

Attachment: pg_receivexlog-fsync-feedback-v3.patch
Description: pg_receivexlog-fsync-feedback-v3.patch

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