From: Alan Stern <stern@rowland.harvard.edu>
To: Oliver Neukum <oliver@neukum.org>
Cc: Pavel Machek <pavel@ucw.cz>,
Raymano Garibaldi <raymano@faunos.com>,
Andrew Morton <akpm@linux-foundation.org>,
Denys Vlasenko <vda.linux@googlemail.com>,
Kernel development list <linux-kernel@vger.kernel.org>,
USB development list <linux-usb-devel@lists.sourceforge.net>
Subject: Re: [linux-usb-devel] [FEATURE REQUEST] Transparent hot plugging of root file system on portable storage devices.
Date: Sun, 6 Jan 2008 17:26:17 -0500 (EST) [thread overview]
Message-ID: <Pine.LNX.4.44L0.0801061722400.19222-100000@netrider.rowland.org> (raw)
In-Reply-To: <200801062159.46481.oliver@neukum.org>
On Sun, 6 Jan 2008, Oliver Neukum wrote:
> Am Sonntag 06 Januar 2008 schrieb Alan Stern:
> > What about people who want to suspend to RAM instead of hibernating and
> > _do_ want to unplug the USB device containing their root filesystem
> > while the machine is asleep? In this case we will _know_ that the
> > power session has been interrupted, but USB Persist won't activate
> > because the host controller never lost power.
>
> Would it be hard to force the persist feature on for a replugged device?
Right now the persist feature is enabled by a per-device boolean flag.
In theory the flag could accept 3 values: off, on if power was lost,
or on for any resume transition. This would not be a hard change.
Alan Stern
next prev parent reply other threads:[~2008-01-06 22:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-26 19:04 [linux-usb-devel] [FEATURE REQUEST] Transparent hot plugging of root file system on portable storage devices Raymano Garibaldi
2008-01-01 20:29 ` Pavel Machek
2008-01-02 10:19 ` Oliver Neukum
2008-01-02 20:23 ` Alan Stern
2008-01-05 21:52 ` Pavel Machek
2008-01-06 17:18 ` Alan Stern
2008-01-06 20:59 ` Oliver Neukum
2008-01-06 22:26 ` Alan Stern [this message]
2008-01-06 22:44 ` Pavel Machek
2008-01-07 15:39 ` Alan Stern
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