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    SubjectRe: [PATCH 2.6.19 5/5] fs: freeze_bdev with semaphore not mutex
    On Thu, Nov 09, 2006 at 11:21:46PM +0100, Rafael J. Wysocki wrote:
    > I think we can add a flag to __create_workqueue() that will indicate if
    > this one is to be running with PF_NOFREEZE and a corresponding macro like
    > create_freezable_workqueue() to be used wherever we want the worker thread
    > to freeze (in which case it should be calling try_to_freeze() somewhere).
    > Then, we can teach filesystems to use this macro instead of
    > create_workqueue().

    At what point does the workqueue get frozen? i.e. how does this
    guarantee an unfrozen filesystem will end up in a consistent


    Dave Chinner
    Principal Engineer
    SGI Australian Software Group
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