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From: Oliver Neukum <oliver@neukum.name>
To: Xuan Baldauf <xuan--reiserfs@baldauf.org>,
       Rik van Riel <riel@conectiva.com.br>
Subject: Re: Heuristic readahead for filesystems
Date: Wed, 11 Sep 2002 20:30:27 +0200
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> In theory, this also could be implemented explicitly if the application
> could tell the kernel "I'm going to read these 100 files in the very
> near future, please make them ready for me". But wait, maybe the
> application can do this (for regular files, not for directory entries
> and stat() data): Could it be efficient if the application used
> open(file,O_NONBLOCK) for the next 100 files and subsequent read()s on
> each of the returned filedescriptors?

What do you want to trigger the reading ahead, open() or read() ?
Please correct me, if I am wrong, but wouldn't read() block ?

Aio should be able to do it. But even that want help you with the stat data.

	Regards
		Oliver

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