[PATCH V3 0/6] blk-mq: update_nr_hw_queues related improvement & bugfix

Ming Lei
2022-03-07T06:44:24Z

Hi,

The 1st patch figures out correct numa node for each kind of hw queue.

The 2nd patch simplifies reallocation of q->queue_hw_ctx a bit.

The 3rd patch re-configures poll capability after queue map is changed.

The 4th patch changes mtip32xx to avoid to refer to q->queue_hw_ctx
directly.

The 5th & 6th patches fix use-after-free on q->queue_hw_ctx.

V3:
- fix smatch warnings reported by kernel test robot (5/6)

V2:
- use xa_for_each() to implement queue_for_each_hw_ctx(5/6 6/6)
- patch style change(1/6)
- rename as suggested by Christoph(3/6)

Ming Lei (6):
blk-mq: figure out correct numa node for hw queue
blk-mq: simplify reallocation of hw ctxs a bit
blk-mq: reconfigure poll after queue map is changed
block: mtip32xx: don't touch q->queue_hw_ctx
blk-mq: prepare for implementing hctx table via xarray
blk-mq: manage hctx map via xarray

block/blk-mq-debugfs.c | 6 +-
block/blk-mq-sched.c | 9 +-
block/blk-mq-sysfs.c | 16 +--
block/blk-mq-tag.c | 4 +-
block/blk-mq.c | 158 +++++++++++++++++-------------
block/blk-mq.h | 2 +-
drivers/block/mtip32xx/mtip32xx.c | 4 +-
drivers/block/rnbd/rnbd-clt.c | 2 +-
include/linux/blk-mq.h | 3 +-
include/linux/blkdev.h | 2 +-
10 files changed, 116 insertions(+), 90 deletions(-)

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2.31.1