linux-kernel - Re: How to tell whether a struct file is held by a process?

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Message-ID: <Pine.LNX.4.44L0.0905221418110.3006-100000@iolanthe.rowland.org>
Date:	Fri, 22 May 2009 14:19:26 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Pantelis Koukousoulas <pktoss@...il.com>
cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Kyle Moffett <kyle@...fetthome.net>,
	Kay Sievers <kay.sievers@...y.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: How to tell whether a struct file is held by a process?

On Fri, 22 May 2009, Pantelis Koukousoulas wrote:

> Note though, I assume that there is / will be a way to reliably
> predict the port
> number (at least roughly) given a physical port location. E.g., if I plugged
> a device to my front left usb connector and it got port number X, it should
> be possible to predict what the port number will be if I reconnect the same
> device to the same connector. (This doesn't have to hold across reboots).

If you don't reboot between connects, the port numbers and hub 
identifiers will not change.

Alan Stern

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