Hello Jens, This patch series not only enables runtime power management for blk-mq but also simplifies power management for the legacy block layer. Please consider this patch series for kernel v4.19. Thanks, Bart. Changes compared to v1: - Moved the runtime power management code into a separate file. - Addressed Ming's feedback. Bart Van Assche (5): block: Fix a comment in a header file block: Move power management functions into new source files block: Serialize queue freezing and blk_pre_runtime_suspend() block, scsi: Rework runtime power management blk-mq: Enable support for runtime power management block/Makefile | 1 + block/blk-core.c | 237 ++++---------------------------------- block/blk-mq-debugfs.c | 1 - block/blk-mq.c | 3 + block/blk-pm.c | 235 +++++++++++++++++++++++++++++++++++++ block/elevator.c | 11 +- drivers/scsi/scsi_pm.c | 1 + drivers/scsi/sd.c | 5 +- drivers/scsi/sr.c | 1 + drivers/scsi/ufs/ufshcd.c | 10 +- include/linux/blk-pm.h | 28 +++++ include/linux/blkdev.h | 36 ++---- 12 files changed, 309 insertions(+), 260 deletions(-) create mode 100644 block/blk-pm.c create mode 100644 include/linux/blk-pm.h -- 2.18.0
