Messages in this thread | | | Date | Thu, 3 Apr 2008 07:57:20 +1000 | From | David Chinner <> | Subject | Re: xfs_io "BUG: lock held when returning to user space!" on suspend |
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On Wed, Apr 02, 2008 at 11:58:54AM -0700, Jeremy Fitzhardinge wrote: > I'm getting this: > > ================================================ > [ BUG: lock held when returning to user space! ] > ------------------------------------------------ > xfs_io/18796 is leaving the kernel with locks still held! > 1 lock held by xfs_io/18796: > #0: (&type->s_umount_key#19){----}, at: [<c048c9ac>] get_super+0x42/0x87 > > when I suspend, possibly during an xfs-freeze. There don't seem to be any > ill-effects.
Yup, both the sb->s_umount and bdev->bd_mount_sem seaphores are held across freeze_bdev()/thaw_bdev(), and they are issued via separate ioctls generally from separate processes. Not great design, but not a bug....
Cheers,
Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group
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