Hello, Years ago, workqueue got reimplemented to use common worker pools across different workqueues and a new set of more expressive workqueue creation APIs, alloc_*workqueue() were introduced. The old create_*workqueue() became simple wrappers around alloc_*workqueue() with the most conservative parameters. The plan has always been to examine each usage and convert to the new interface with parameters actually required for the use case. One important flag to decide upon is WQ_MEM_RECLAIM, which declares that the workqueue may be depended upon during memory reclaim and thus must be able to make forward-progress even when further memory can't be allocated without reclaiming some. Of the network drivers which already use alloc_*workqueue() interface, some specify this flag and I'm wondering what the guidelines should be here. * Are network devices expected to be able to serve as a part of storage stack which is depended upon for memory reclamation? * If so, are all the pieces in place for that to work for all (or at least most) network devices? If it's only for a subset of NICs, how can one tell whether a given driver needs forward progress guarantee or not? * I assume that wireless drivers aren't and can't be used in this fashion. Is that a correction assumption? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
