[V2,0/4] blk-mq: queue mapping fix & improvement

Message

Ming Lei Dec. 17, 2018, 10:42 a.m. UTC

Hi,

The 1st patch fixes allocation for queue mapping table.

The 2nd patch fixes shared queue mapping, which may cause IO
hang in case that both write_queues and poll_queues are zero.

The 3rd patch fixes dispatch from sw queue when there is either
write queue or poll queue.

The 4th patch exports hctx->type in debugfs, so that we can write
debugfs based test for verifying if queue mapping is valid.


V2:
	- remove hctx->type export from sysfs
	- take hch's patch to fix shared queue mapping
	- add the patch 3

Christoph Hellwig (1):
  blk-mq: fix shared queue mapping

Ming Lei (3):
  blk-mq: fix allocation for queue mapping table
  blk-mq: fix dispatch from sw queue
  blk-mq: export hctx->type in debugfs instead of sysfs

 block/blk-mq-debugfs.c  | 85 ++++++++++++++++++++++++++++++++-----------------
 block/blk-mq-sched.c    | 23 ++++++++-----
 block/blk-mq-sysfs.c    | 17 ----------
 block/blk-mq.c          | 57 ++++++++++++++++++++-------------
 block/blk-mq.h          | 21 +++++++-----
 drivers/nvme/host/pci.c |  6 +---
 6 files changed, 119 insertions(+), 90 deletions(-)