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SubjectHow to recognize synchronous write requests
Hi all,

As much as I know, type of an IO request can be realized by "DATA_DIR"
macro,but I wanted to know if it is possible to distinguish a read or
write is synchronous or asychronous.

I'm also using "blktrace" to extract requests dispatching to disk.
blktrace, determines synchrnous writes as "ws" and asynchronous writes
as "w".


Amirali Shambayati
Bachelor Student
Computer Engineering Department
Sharif University of Technology
Tehran, Iran

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