From mboxrd@z Thu Jan  1 00:00:00 1970
From: Theodore Ts'o <tytso@mit.edu>
Subject: Re: [Bug 101011] Kernel Oops when disconnecting a mounted ext4 usb
 stick
Date: Sun, 16 Aug 2015 09:38:00 -0400
Message-ID: <20150816133800.GC3825@thunk.org>
References: <bug-101011-11613@https.bugzilla.kernel.org/>
 <bug-101011-11613-PGvplgVz20@https.bugzilla.kernel.org/>
 <20150814183931.GA3050@thunk.org>
 <20150815081902.GA20587@lst.de>
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Cc: bugzilla-daemon@bugzilla.kernel.org, linux-scsi@vger.kernel.org,
	linux-ext4@vger.kernel.org, Tejun Heo <tj@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Return-path: <linux-scsi-owner@vger.kernel.org>
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On Sat, Aug 15, 2015 at 10:19:02AM +0200, Christoph Hellwig wrote:
> 
> sorry for the delay - I saw the mail Jan Cc'ed me on yesterday.  After
> my changes it should not go away and I had tested the original eject
> test that it indeed didn't.  Either I forgot a case, or the major
> writeback Tejun did a little later regressed it.
> 
> As I won't have time to look into it ASAP I'd suggest to revert my
> patch for now.  In the long run I really don't want to have these
> checks spread over file system so I plan to look into it once I
> get a few spare hours.

Thanks, I'll revert the patch.

I suspect we should add an ioctl to simulate a USB device unplug using
the loopback block device, so we can add a test to xfstests.

    	     	   	      	     	 - Ted