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Date: Mon, 26 Sep 2005 22:38:21 -0400 (EDT)
From: Alan Stern <stern@rowland.harvard.edu>
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To: Kernel development list <linux-kernel@vger.kernel.org>
Subject: Readahead
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Can somebody please tell me where the code is that performs optimistic
readahead when a process does sequential reads on a block device?

And can someone explain why those readahead calls are allowed to extend 
beyond the end of the device?

Alan Stern