| ec084de929e4 ("fs/writeback.c: use rcu_barrier() to wait for inflight wb switches going into workqueue when umount") | |
| 7fc5854f8c6e ("writeback: synchronize sync(2) against cgroup writeback membership switches") | |
| 3ee7e8697d58 ("bdi: Fix another oops in wb_workfn()") | |
| 8236b0ae31c8 ("bdi: wake up concurrent wb_shutdown() callers.") |