On Tue, Feb 18, 2020 at 11:35:35AM +0800, Lang Cheng wrote: > The hns3 driver sets "hclge_service_task" workqueue with > WQ_MEM_RECLAIM flag in order to guarantee forward progress > under memory pressure. Don't do that. WQ_MEM_RECLAIM is only to be used by things interlinked with reclaimed processing. Work on queues marked with WQ_MEM_RECLAIM can't use GFP_KERNEL allocations, can't do certain kinds of sleeps, can't hold certain kinds of locks, etc. Jason
