linux-stable.git/block/blk-sysfs.c, branch v5.0

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2018-12-28T22:48:06+00:00

Pull SCSI updates from James Bottomley:
 "This is mostly update of the usual drivers: smarpqi, lpfc, qedi,
  megaraid_sas, libsas, zfcp, mpt3sas, hisi_sas.

  Additionally, we have a pile of annotation, unused variable and minor
  updates.

  The big API change is the updates for Christoph's DMA rework which
  include removing the DISABLE_CLUSTERING flag.

  And finally there are a couple of target tree updates"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (259 commits)
  scsi: isci: request: mark expected switch fall-through
  scsi: isci: remote_node_context: mark expected switch fall-throughs
  scsi: isci: remote_device: Mark expected switch fall-throughs
  scsi: isci: phy: Mark expected switch fall-through
  scsi: iscsi: Capture iscsi debug messages using tracepoints
  scsi: myrb: Mark expected switch fall-throughs
  scsi: megaraid: fix out-of-bound array accesses
  scsi: mpt3sas: mpt3sas_scsih: Mark expected switch fall-through
  scsi: fcoe: remove set but not used variable 'port'
  scsi: smartpqi: call pqi_free_interrupts() in pqi_shutdown()
  scsi: smartpqi: fix build warnings
  scsi: smartpqi: update driver version
  scsi: smartpqi: add ofa support
  scsi: smartpqi: increase fw status register read timeout
  scsi: smartpqi: bump driver version
  scsi: smartpqi: add smp_utils support
  scsi: smartpqi: correct lun reset issues
  scsi: smartpqi: correct volume status
  scsi: smartpqi: do not offline disks for transient did no connect conditions
  scsi: smartpqi: allow for larger raid maps
  ...

scsi: block: remove the cluster flag

2018-12-19T04:39:26+00:00

Now that the the SCSI layer replaced the use of the cluster flag with
segment size limits and the DMA boundary we can remove the cluster flag
from the block layer.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jens Axboe 
Signed-off-by: Martin K. Petersen

blk-mq: enable IO poll if .nr_queues of type poll > 0

2018-12-18T04:35:07+00:00

The queue mapping of type poll only exists when set->map[HCTX_TYPE_POLL].nr_queues
is bigger than zero, so enhance the constraint by checking .nr_queues of type poll
before enabling IO poll.

Otherwise IO race & timeout can be observed when running block/007.

Cc: Jeff Moyer 
Cc: Christoph Hellwig 
Signed-off-by: Ming Lei 
Signed-off-by: Jens Axboe

block: only allow polling if a poll queue_map exists

2018-12-04T18:38:19+00:00

This avoids having to have differnet mq_ops for different setups
with or without poll queues.

Reviewed-by: Sagi Grimberg 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: add io timeout to sysfs

2018-11-28T16:08:28+00:00

Give a interface to adjust io timeout(ms) by device.

Signed-off-by: Weiping Zhang 
Signed-off-by: Jens Axboe

block: add queue_is_mq() helper

2018-11-16T15:34:06+00:00

Various spots check for q->mq_ops being non-NULL, but provide
a helper to do this instead.

Where the ->mq_ops != NULL check is redundant, remove it.

Since mq == rq-based now that legacy is gone, get rid of the
queue_is_rq_based() and just use queue_is_mq() everywhere.

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

block: remove the queue_lock indirection

2018-11-15T19:17:28+00:00

With the legacy request path gone there is no good reason to keep
queue_lock as a pointer, we can always use the embedded lock now.

Reviewed-by: Hannes Reinecke 
Signed-off-by: Christoph Hellwig 

Fixed floppy and blk-cgroup missing conversions and half done edits.

Signed-off-by: Jens Axboe

block: use atomic bitops for ->queue_flags

2018-11-15T19:13:19+00:00

->queue_flags is generally not set or cleared in the fast path, and also
generally set or cleared one flag at a time.  Make use of the normal
atomic bitops for it so that we don't need to take the queue_lock,
which is otherwise mostly unused in the core block layer now.

Reviewed-by: Hannes Reinecke 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

block: remove dead elevator code

2018-11-07T20:42:32+00:00

This removes a bunch of core and elevator related code. On the core
front, we remove anything related to queue running, draining,
initialization, plugging, and congestions. We also kill anything
related to request allocation, merging, retrieval, and completion.

Remove any checking for single queue IO schedulers, as they no
longer exist. This means we can also delete a bunch of code related
to request issue, adding, completion, etc - and all the SQ related
ops and helpers.

Also kill the load_default_modules(), as all that did was provide
for a way to load the default single queue elevator.

Tested-by: Ming Lei 
Reviewed-by: Omar Sandoval 
Signed-off-by: Jens Axboe

block: remove legacy rq tagging

2018-11-07T20:42:32+00:00

It's now unused, kill it.

Reviewed-by: Hannes Reinecke 
Tested-by: Ming Lei 
Reviewed-by: Omar Sandoval 
Signed-off-by: Jens Axboe