[PATCH v7] conversion to blk-mq

Matias Bjørling
2014-06-10T09:21:37Z

Hi all,

I've rebased the patch on top of Jens' for-linus and Matthew's master.
The patch now applies cleanly when submitted upstream.

The bug reports seem to have calmed down. Ming reported a double completion bug
that is fixed in Jens' for-linus tree. We should be able to flesh out any
outstanding bugs in the 3.16-rc cycles.

Jens for-linus up to:

2b8393b43ec672bb263009cd74c056ab01d6ac17
blk-mq: add timer in blk_mq_start_request

Matthew master up to:

bd67608a6127c994e897c49cc4f72d9095925301
NVMe: Rename io_timeout to nvme_io_timeout

The merged trees with the patch on top is found here:

https://github.com/MatiasBjorling/linux-collab nvmemq_review

Changes since v6:
* Rebased on top of Matthew's master and Jens' for-linus
* A couple of style fixups

Changes since v5:
* Splits are now supported directly within blk-mq
* Remove nvme_queue->cpu_mask variable
* Remove unnecessary null check
* Style fixups

Changes since v4:
* Fix timeout retries
* Fix naming in nvme_init_hctx
* Fix racy behavior of admin queue in nvme_dev_remove
* Fix wrong return values in nvme_queue_request
* Put cqe_seen back
* Introduce abort_completion for killing timed out I/Os
* Move locks outside of nvme_submit_iod
* Various renaming and style fixes

Changes since v3:
* Added abortion logic
* Fixed possible race on abortion
* Removed req data with flush. Handled by by blk-mq
* Added safety check for submitting user rq to admin queue.
* Use dev->online_queues for nr_hw_queues
* Fix loop with initialization in nvme_create_io_queues
* Style fixups

Changes since v2:
* rebased on top of current 3.16/core.
* use blk-mq queue management for spreading io queues
* removed rcu handling and allocated all io queues up front for mgmt by blk-mq
* removed the need for hotplugging notification
* fixed flush data handling
* fixed double free of spinlock
* various cleanup

Matias Bjørling (1):
NVMe: conversion to blk-mq

drivers/block/nvme-core.c | 1199 ++++++++++++++++++---------------------------
drivers/block/nvme-scsi.c | 8 +-
include/linux/nvme.h | 15 +-
3 files changed, 494 insertions(+), 728 deletions(-)

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1.9.1