from_cancel 2978 kernel/workqueue.c bool from_cancel) from_cancel 3020 kernel/workqueue.c if (!from_cancel && from_cancel 3033 kernel/workqueue.c static bool __flush_work(struct work_struct *work, bool from_cancel) from_cancel 3043 kernel/workqueue.c if (!from_cancel) { from_cancel 3048 kernel/workqueue.c if (start_flush_work(work, &barr, from_cancel)) {