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    SubjectRe: bd_mount_mutex -> bd_mount_sem (was Re: xfs_file_ioctl / xfs_freeze: BUG: warning at kernel/mutex-debug.c:80/debug_mutex_unlock())
    Andrew Morton wrote:
    > On Tue, 9 Jan 2007 10:47:28 +1100
    > David Chinner <dgc@sgi.com> wrote:
    >
    >> On Mon, Jan 08, 2007 at 10:40:54AM -0600, Eric Sandeen wrote:
    >>> Sami Farin wrote:
    >>>> On Mon, Jan 08, 2007 at 08:37:34 +1100, David Chinner wrote:
    >>>> ...
    >>>>>> fstab was there just fine after -u.
    >>>>> Oh, that still hasn't been fixed?
    >>>> Looked like it =)
    >>> Hm, it was proposed upstream a while ago:
    >>>
    >>> http://lkml.org/lkml/2006/9/27/137
    >>>
    >>> I guess it got lost?
    >> Seems like it. Andrew, did this ever get queued for merge?
    >
    > Seems not. I think people were hoping that various nasties in there
    > would go away. We return to userspace with a kernel lock held??

    Is a semaphore any worse than the current mutex in this respect? At
    least unlocking from another thread doesn't violate semaphore rules. :)

    -Eric
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