On Mon, Mar 06, 2017 at 05:33:59PM +0100, Jan Kara wrote: > Currently we waited for all cgwbs to get freed in cgwb_bdi_destroy() > which also means that writeback has been shutdown on them. Since this > wait is going away, directly shutdown writeback on cgwbs from > cgwb_bdi_destroy() to avoid live writeback structures after > bdi_unregister() has finished. To make that safe with concurrent > shutdown from cgwb_release_workfn(), we also have to make sure > wb_shutdown() returns only after the bdi_writeback structure is really > shutdown. > > Signed-off-by: Jan Kara <[email protected]>
Acked-by: Tejun Heo <[email protected]> Thanks. -- tejun
