blk-mq: Use all available hardware queues

[mirror_ubuntu-zesty-kernel.git] / block / blk-mq-cpumap.c

diff --git a/block/blk-mq-cpumap.c b/block/blk-mq-cpumap.c
index 72e5ed691e37ae38eadf606bf0d017308c3e48bc..5f13f4d0bcceda747589a300170537eefb4810eb 100644 (file)
--- a/block/blk-mq-cpumap.c
+++ b/block/blk-mq-cpumap.c
@@ -17,7 +17,7 @@
 static int cpu_to_queue_index(unsigned int nr_cpus, unsigned int nr_queues,
                              const int cpu)
 {
-       return cpu / ((nr_cpus + nr_queues - 1) / nr_queues);
+       return cpu * nr_queues / nr_cpus;
 }
 
 static int get_first_sibling(unsigned int cpu)