Re: Can O_SYNC be implemented by using fsync?

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Thu May 18 2000 - 06:50:17 EDT

  • Next message: Michal Zapasnik: "PROLEM:Kernel"

    > Linus's argument at the time was "well, do we need it, or is fsync
    > fast enough now?" If anyone is prepared to put performance numbers
    > on it, now is the time to put your paws in the air. :-)
    >
    > How complex is the code? Ideally, O_SYNC should be as fast as
    > possible, even on very large files -- if the code is simple and small
    > enough, I would go for it...

    O_SYNC needs to be disk fast, and it needs to issue all the blocks then parallel
    wait for them in order to get maximum performance.

    Alan

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