Hi Jens These two patches are small optimization for accessing the queue mapping in hot path. It saves the queue mapping results into blk_mq_ctx directly, then we needn't do the complicated bounce on queue_hw_ctx[] map[] and mq_map[]. Jianchao Wang (2) blk-mq: save queue mapping result into ctx directly blk-mq: save default hctx into ctx->hctxs block/blk-mq-sched.c | 2 +- block/blk-mq-tag.c | 2 +- block/blk-mq.c | 13 ++++++++++--- block/blk-mq.h | 20 +++++++++----------- block/blk.h | 2 +- 5 files changed, 22 insertions(+), 17 deletions(-) Thanks Jianchao