Re: [RFC] [PATCH] 2.5.35 patch for making DIO async

From: Benjamin LaHaise (
Date: Wed Sep 18 2002 - 06:51:03 EST

On Tue, Sep 17, 2002 at 02:03:02PM -0700, Badari Pulavarty wrote:
> Hi Ben,
> Here is a 2.5.35 patch to make DIO async. Basically, DIO does not
> wait for io completion. Waiting will be done at the higher level
> (same way generic_file_read does).

This looks pretty good. Andrew Morton has had a look over it too and
agrees that it should go in after a bit of testing. Does someone want
to try comparing throughput of dio based aio vs normal read/write? It
would be interesting to see what kind of an effect pipelining aios makes
and if there are any performance niggles we need to squash. Cheer,

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