Re: Async disk i/o in Linux

J. Robert von Behren (jrvb@cs.berkeley.edu)
Mon, 17 Jul 2000 13:37:59 -0700

The kio stuff in the latest kernels does provide mechanisms for
asynchronous access to disk, though. I don't believe there are
presently any user-level hooks into async disk, though. (But somebody
please correct me if I am wrong.)

Best regards,

-Rob von Behren

Tigran Aivazian wrote:
>
> On Mon, 17 Jul 2000, Ramon Garcia Fernandez wrote:
> > Or it supports select with them?
>
> Linux always (for as long as select(2) existed?) supported select(2) on
> regular files. But why would you use it? select(2) on regular files is
> absolutely useless and uninteresting (imagine a person who always says
> "YES!" to any question you ask).
>
> The reason why they are uninteresting is from Single UNIX v2 spec that
> dictates:
>
> File descriptors associated with regular files always select true
> for ready to read, ready to write, and error conditions.
>
> Regards,
> Tigran
>
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