linux.git/drivers/nvme, branch v4.5-rc5

NVMe: Rate limit nvme IO warnings

2016-02-12T15:10:31+00:00

We don't need to spam the kernel logs with thousands of IO cancelling
messages. We can infer all IO's are being cancelled with fewer, or
even none at all. This patch rate limits the message and uses the debug
log level as it is mainly used for testing purposes.

Signed-off-by: Keith Busch 
Signed-off-by: Jens Axboe

NVMe: Poll device while still active during remove

2016-02-12T15:10:16+00:00

A device failure or link down wouldn't have been detected during namespace
removal. This patch keeps the device in the list for polling so that the
thread may see such failure and initiate a reset. The device is removed
from the list after disable, so we can safely flush the reset work as
it can't be requeued when disable completes.

Signed-off-by: Keith Busch 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Sagi Grimberg 
Signed-off-by: Jens Axboe

NVMe: Requeue requests on suspended queues

2016-02-12T15:10:08+00:00

It's possible a request may get to the driver after the nvme queue was
disabled. This has the request requeue if that happens.

Note the request is still "started" by the driver, but requeuing will
clear the start state for timeout handling.

Signed-off-by: Keith Busch 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Sagi Grimberg 
Signed-off-by: Jens Axboe

NVMe: Allow request merges

2016-02-11T20:14:03+00:00

It is generally more efficient to submit larger IO.

Signed-off-by: Keith Busch 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Sagi Grimberg 
Signed-off-by: Jens Axboe

NVMe: Fix io incapable return values

2016-02-11T20:14:02+00:00

The function returns true when the controller can't handle IO.

Signed-off-by: Keith Busch 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Johannes Thumshirn 
Acked-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

nvme: fix Kconfig description for BLK_DEV_NVME_SCSI

2016-02-09T17:21:22+00:00

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

lightnvm: check overflow and correct mlc pairs

2016-02-04T16:19:45+00:00

The specification currently limits the number of MLC pairs to 886. Make
sure that a device is unable to be instantiate if more is configured.

Also, previously the patch had the wrong math for copying MLC pairs, as
it only copied half of the actual entries.

Fixes: ca5927e7ab53 "lightnvm: introduce mlc lower page table mappings"
Signed-off-by: Matias Bjørling 
Signed-off-by: Jens Axboe

Merge branch 'for-4.5/nvme' of git://git.kernel.dk/linux-block

2016-01-22T03:58:02+00:00

Pull NVMe updates from Jens Axboe:
 "Last branch for this series is the nvme changes.  It's in a separate
  branch to avoid splitting too much between core and NVMe changes,
  since NVMe is still helping drive some blk-mq changes.  That said, not
  a huge amount of core changes in here.  The grunt of the work is the
  continued split of the code"

* 'for-4.5/nvme' of git://git.kernel.dk/linux-block: (67 commits)
  uapi: update install list after nvme.h rename
  NVMe: Export NVMe attributes to sysfs group
  NVMe: Shutdown controller only for power-off
  NVMe: IO queue deletion re-write
  NVMe: Remove queue freezing on resets
  NVMe: Use a retryable error code on reset
  NVMe: Fix admin queue ring wrap
  nvme: make SG_IO support optional
  nvme: fixes for NVME_IOCTL_IO_CMD on the char device
  nvme: synchronize access to ctrl->namespaces
  nvme: Move nvme_freeze/unfreeze_queues to nvme core
  PCI/AER: include header file
  NVMe: Export namespace attributes to sysfs
  NVMe: Add pci error handlers
  block: remove REQ_NO_TIMEOUT flag
  nvme: merge iod and cmd_info
  nvme: meta_sg doesn't have to be an array
  nvme: properly free resources for cancelled command
  nvme: simplify completion handling
  nvme: special case AEN requests
  ...

Merge branch 'for-4.5/lightnvm' of git://git.kernel.dk/linux-block

2016-01-22T03:01:55+00:00

Pull lightnvm fixes and updates from Jens Axboe:
 "This should have been part of the drivers branch, but it arrived a bit
  late and wasn't based on the official core block driver branch.  So
  they got a small scolding, but got a pass since it's still new.  Hence
  it's in a separate branch.

  This is mostly pure fixes, contained to lightnvm/, and minor feature
  additions"

* 'for-4.5/lightnvm' of git://git.kernel.dk/linux-block: (26 commits)
  lightnvm: ensure that nvm_dev_ops can be used without CONFIG_NVM
  lightnvm: introduce factory reset
  lightnvm: use system block for mm initialization
  lightnvm: introduce ioctl to initialize device
  lightnvm: core on-disk initialization
  lightnvm: introduce mlc lower page table mappings
  lightnvm: add mccap support
  lightnvm: manage open and closed blocks separately
  lightnvm: fix missing grown bad block type
  lightnvm: reference rrpc lun in rrpc block
  lightnvm: introduce nvm_submit_ppa
  lightnvm: move rq->error to nvm_rq->error
  lightnvm: support multiple ppas in nvm_erase_ppa
  lightnvm: move the pages per block check out of the loop
  lightnvm: sectors first in ppa list
  lightnvm: fix locking and mempool in rrpc_lun_gc
  lightnvm: put block back to gc list on its reclaim fail
  lightnvm: check bi_error in gc
  lightnvm: return the get_bb_tbl return value
  lightnvm: refactor end_io functions for sync
  ...

Merge branch 'for-4.5/core' of git://git.kernel.dk/linux-block

2016-01-19T23:03:34+00:00

Pull core block updates from Jens Axboe:
 "We don't have a lot of core changes this time around, it's mostly in
  drivers, which will come in a subsequent pull.

  The cores changes include:

   - blk-mq
        - Prep patch from Christoph, changing blk_mq_alloc_request() to
          take flags instead of just using gfp_t for sleep/nosleep.
        - Doc patch from me, clarifying the difference between legacy
          and blk-mq for timer usage.
        - Fixes from Raghavendra for memory-less numa nodes, and a reuse
          of CPU masks.

   - Cleanup from Geliang Tang, using offset_in_page() instead of open
     coding it.

   - From Ilya, rename request_queue slab to it reflects what it holds,
     and a fix for proper use of bdgrab/put.

   - A real fix for the split across stripe boundaries from Keith.  We
     yanked a broken version of this from 4.4-rc final, this one works.

   - From Mike Krinkin, emit a trace message when we split.

   - From Wei Tang, two small cleanups, not explicitly clearing memory
     that is already cleared"

* 'for-4.5/core' of git://git.kernel.dk/linux-block:
  block: use bd{grab,put}() instead of open-coding
  block: split bios to max possible length
  block: add call to split trace point
  blk-mq: Avoid memoryless numa node encoded in hctx numa_node
  blk-mq: Reuse hardware context cpumask for tags
  blk-mq: add a flags parameter to blk_mq_alloc_request
  Revert "blk-flush: Queue through IO scheduler when flush not required"
  block: clarify blk_add_timer() use case for blk-mq
  bio: use offset_in_page macro
  block: do not initialise statics to 0 or NULL
  block: do not initialise globals to 0 or NULL
  block: rename request_queue slab cache