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Jack Wang
03ed5a8cda
lockdep triggers a warning from time to time when running a regression test: rnbd_client L685: </dev/nullb0@bla> Device disconnected. rnbd_client L1756: Unloading module workqueue: WQ_MEM_RECLAIM rtrs_client_wq:rtrs_clt_reconnect_work [rtrs_client] is flushing !WQ_MEM_RECLAIM ib_addr:process_one_req [ib_core] WARNING: CPU: 2 PID: 18824 at kernel/workqueue.c:2517 check_flush_dependency+0xad/0x130 The root cause is workqueue core expect flushing should not be done for a !WQ_MEM_RECLAIM wq from a WQ_MEM_RECLAIM workqueue. In above case ib_addr workqueue without WQ_MEM_RECLAIM, but rtrs_wq WQ_MEM_RECLAIM. To avoid the warning, remove the WQ_MEM_RECLAIM flag. Fixes:9cb8374804("RDMA/rtrs: server: main functionality") Fixes:6a98d71dae("RDMA/rtrs: client: main functionality") Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jack Wang <[email protected]> Signed-off-by: Md Haris Iqbal <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>