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From: John Zielinski <>
To: William Lee Irwin III <>
Subject: Re: Rootfs mounted from user space - problem with umount
Date: Sat, 29 Nov 2003 04:40:51 -0500	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

William Lee Irwin III wrote:

>Looks like either namespace->sem or sb->s_umount; you should be able
>to put some instrumentation code in down_write() and/or down_read() to
>see who acquired it first by checking to see if the sem acquired belongs
>to rootfs' sb or some namespace (doubtful you'll create many of them).

Found it.  It was a stupid mistake.  I made the get_sb function return 
the same superblock when it was still get_sb_nodev.  When I switched it 
to the proper get_sb_single I forgot to remove the code that returned 
the old sb so it wasn't calling get_sb_single to increase the sb's usage 
count.  Doh!


  reply	other threads:[~2003-11-29  9:40 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-29  5:24 Rootfs mounted from user space - problem with umount John Zielinski
2003-11-29  5:31 ` William Lee Irwin III
2003-11-29  6:14   ` John Zielinski
2003-11-29  6:21     ` William Lee Irwin III
2003-11-29  9:40       ` John Zielinski [this message]
2003-11-29  9:44         ` William Lee Irwin III
2003-11-29 20:02           ` John Zielinski
2003-11-29 20:20             ` John Zielinski
2003-11-29 20:25               ` William Lee Irwin III
2003-11-29 21:05                 ` John Zielinski
2003-11-29 21:17                   ` Sean Neakums
2003-11-29 21:42                     ` John Zielinski
2003-11-30  0:38                       ` [OT] " Sean Neakums
2003-11-29  5:38 ` Valdis.Kletnieks
2003-11-29  6:25   ` John Zielinski

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