[PATCH 09/13] blk-mq: don't redistribute hardware queues on a CPU hotplug event

2016-07-04 Thread Christoph Hellwig
Currently blk-mq will totally remap hardware context when a CPU hotplug even happened, which causes major havoc for drivers, as they are never told about this remapping. E.g. any carefully sorted out CPU affinity will just be completely messed up. The rebuild also doesn't really help for the comm

[PATCH 09/13] blk-mq: don't redistribute hardware queues on a CPU hotplug event

2016-06-14 Thread Christoph Hellwig
Currently blk-mq will totally remap hardware context when a CPU hotplug even happened, which causes major havoc for drivers, as they are never told about this remapping. E.g. any carefully sorted out CPU affinity will just be completely messed up. The rebuild also doesn't really help for the comm