Re: Solve the problem that umount will fail when an opened file isn't closed

[colin]

Hi Mike,
Do you want to see the hotplug agent code?
I can mail it to you and I would be very grateful if you can give me any
suggestion to improve it.
It will be used on a consumer product and would be better to be very stable.

Regards,
Colin


----- Original Message ----- 
From: "Mike Smullin" <mikesmullin@xxxxxxxxxxxxxxxxxxxxxxxx>
To: "Jan Engelhardt" <jengelh@xxxxxxxxxxxxxxx>; "colin"
<colin@xxxxxxxxxxxxxx>
Cc: <linux-kernel@xxxxxxxxxxxxxxx>
Sent: Saturday, June 17, 2006 12:39 AM
Subject: Re: Solve the problem that umount will fail when an opened file
isn't closed


> Thanks for that, Jan. What a great idea!
>
> > >I have implemented an auto-mount & auto-umount
> > facility based on USB
> > >hotplug.
>
> Colin can you explain how you implemented this? I would like to try it,
too.
>
> Thanks,
> Mike
>
> --
> Mike Smullin
> "The day I come in front of the Gartner audience and say we have a
> better Unix than Linux, that'll be a good day" -- Steve Ballmer
> http://www.mikesmullin.com
>
> --- Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx> wrote:
>
> > >
> > >Hi all,
> > >I have implemented an auto-mount & auto-umount
> > facility based on USB
> > >hotplug.
> > >An annoying problem will occur when some process
> > doesn't close its open file
> > >and auto-umount is trying to umount that mount
> > point after usb disk has been
> > >unplugged.
> > >Is there any way to force it to be umounted in this
> > situation?
> > >
> >
> > fs/super.c:
> >
> >     /* Forget any remaining inodes */
> >     if (invalidate_inodes(sb)) {
> >         printk("VFS: Busy inodes after unmount of
> > %s. "
> >            "Self-destruct in 5 seconds.  Have a nice
> > day...\n",
> >            sb->s_id);
> >     }
> >
> > That's what happens if you eject a CD. The box won't
> > explode though.
> >
> >
> > Jan Engelhardt
> > --
> > -
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