linux-stable.git/block/Kconfig, branch linux-5.14.y

scsi: blkcg: Fix application ID config options

2021-07-04T18:44:22+00:00

Commit d2bcbeab4200 ("scsi: blkcg: Add app identifier support for
blkcg") introduced an FC_APPID config option under SCSI. However, the
added config option is not used anywhere. Simply remove it.

The block layer BLK_CGROUP_FC_APPID config option is what actually
controls whether the application ID code should be built or not. Make
this option dependent on NVMe over FC since that is currently the only
transport which supports the capability.

Fixes: d2bcbeab4200 ("scsi: blkcg: Add app identifier support for blkcg")
Reported-by: Linus Torvalds 
Signed-off-by: Martin K. Petersen 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Linus Torvalds

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

2021-07-02T22:14:36+00:00

Pull SCSI updates from James Bottomley:
 "This series consists of the usual driver updates (ufs, ibmvfc,
  megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with
  elx and mpi3mr being new drivers.

  The major core change is a rework to drop the status byte handling
  macros and the old bit shifted definitions and the rest of the updates
  are minor fixes"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (287 commits)
  scsi: aha1740: Avoid over-read of sense buffer
  scsi: arcmsr: Avoid over-read of sense buffer
  scsi: ips: Avoid over-read of sense buffer
  scsi: ufs: ufs-mediatek: Add missing of_node_put() in ufs_mtk_probe()
  scsi: elx: libefc: Fix IRQ restore in efc_domain_dispatch_frame()
  scsi: elx: libefc: Fix less than zero comparison of a unsigned int
  scsi: elx: efct: Fix pointer error checking in debugfs init
  scsi: elx: efct: Fix is_originator return code type
  scsi: elx: efct: Fix link error for _bad_cmpxchg
  scsi: elx: efct: Eliminate unnecessary boolean check in efct_hw_command_cancel()
  scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session()
  scsi: elx: efct: Fix error handling in efct_hw_init()
  scsi: elx: efct: Remove redundant initialization of variable lun
  scsi: elx: efct: Fix spelling mistake "Unexected" -> "Unexpected"
  scsi: lpfc: Fix build error in lpfc_scsi.c
  scsi: target: iscsi: Remove redundant continue statement
  scsi: qla4xxx: Remove redundant continue statement
  scsi: ppa: Switch to use module_parport_driver()
  scsi: imm: Switch to use module_parport_driver()
  scsi: mpt3sas: Fix error return value in _scsih_expander_add()
  ...

block: Introduce the ioprio rq-qos policy

2021-06-21T21:03:40+00:00

Introduce an rq-qos policy that assigns an I/O priority to requests based
on blk-cgroup configuration settings. This policy has the following
advantages over the ioprio_set() system call:
- This policy is cgroup based so it has all the advantages of cgroups.
- While ioprio_set() does not affect page cache writeback I/O, this rq-qos
  controller affects page cache writeback I/O for filesystems that support
  assiociating a cgroup with writeback I/O. See also
  Documentation/admin-guide/cgroup-v2.rst.

Cc: Damien Le Moal 
Cc: Hannes Reinecke 
Cc: Christoph Hellwig 
Cc: Ming Lei 
Cc: Johannes Thumshirn 
Cc: Himanshu Madhani 
Signed-off-by: Bart Van Assche 
Link: https://lore.kernel.org/r/20210618004456.7280-5-bvanassche@acm.org
Signed-off-by: Jens Axboe

block/Kconfig: Make the BLK_WBT and BLK_WBT_MQ entries consecutive

2021-06-21T21:03:40+00:00

These entries were consecutive at the time of their introduction but are no
longer consecutive. Make these again consecutive. Additionally, modify the
help text since it refers to blk-mq and since the legacy block layer has
been removed.

Reviewed-by: Damien Le Moal 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Hannes Reinecke 
Cc: Christoph Hellwig 
Cc: Ming Lei 
Cc: Himanshu Madhani 
Signed-off-by: Bart Van Assche 
Reviewed-by: Himanshu Madhani 
Link: https://lore.kernel.org/r/20210618004456.7280-2-bvanassche@acm.org
Signed-off-by: Jens Axboe

scsi: blkcg: Add app identifier support for blkcg

2021-06-10T14:01:32+00:00

Add a unique application identifier (i.e fc_app_id member) in blkcg. This
allows identification of traffic belonging to an specific both on the host
and in the fabric infrastructure. As an example, this allows the storage
stack to uniquely identify traffic belong to particular virtual machine.

Link: https://lore.kernel.org/r/20210608043556.274139-3-muneendra.kumar@broadcom.com
Reviewed-by: Himanshu Madhani 
Reviewed-by: Hannes Reinecke 
Acked-by: Tejun Heo 
Signed-off-by: Muneendra Kumar 
Signed-off-by: Martin K. Petersen

blk-wbt: Remove obsolete multiqueue I/O scheduling comment

2020-09-01T22:49:26+00:00

This comment was added before the multiqueue I/O scheduler framework
was introduced; multiqueue has support for I/O scheduling now, so this
obsolete comment can be removed.

Signed-off-by: Danny Lin 
Signed-off-by: Jens Axboe

nvme: support for zoned namespaces

2020-07-08T14:16:20+00:00

Add support for NVM Express Zoned Namespaces (ZNS) Command Set defined
in NVM Express TP4053. Zoned namespaces are discovered based on their
Command Set Identifier reported in the namespaces Namespace
Identification Descriptor list. A successfully discovered Zoned
Namespace will be registered with the block layer as a host managed
zoned block device with Zone Append command support. A namespace that
does not support append is not supported by the driver.

Reviewed-by: Martin K. Petersen 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Javier González 
Reviewed-by: Himanshu Madhani 
Signed-off-by: Hans Holmberg 
Signed-off-by: Dmitry Fomichev 
Signed-off-by: Ajay Joshi 
Signed-off-by: Aravind Ramesh 
Signed-off-by: Niklas Cassel 
Signed-off-by: Matias Bjørling 
Signed-off-by: Damien Le Moal 
Signed-off-by: Keith Busch 
Signed-off-by: Christoph Hellwig

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21+00:00

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada

block: blk-crypto-fallback for Inline Encryption

2020-05-14T15:48:03+00:00

Blk-crypto delegates crypto operations to inline encryption hardware
when available. The separately configurable blk-crypto-fallback contains
a software fallback to the kernel crypto API - when enabled, blk-crypto
will use this fallback for en/decryption when inline encryption hardware
is not available.

This lets upper layers not have to worry about whether or not the
underlying device has support for inline encryption before deciding to
specify an encryption context for a bio. It also allows for testing
without actual inline encryption hardware - in particular, it makes it
possible to test the inline encryption code in ext4 and f2fs simply by
running xfstests with the inlinecrypt mount option, which in turn allows
for things like the regular upstream regression testing of ext4 to cover
the inline encryption code paths.

For more details, refer to Documentation/block/inline-encryption.rst.

Signed-off-by: Satya Tangirala 
Reviewed-by: Eric Biggers 
Signed-off-by: Jens Axboe

block: Keyslot Manager for Inline Encryption

2020-05-14T15:46:54+00:00

Inline Encryption hardware allows software to specify an encryption context
(an encryption key, crypto algorithm, data unit num, data unit size) along
with a data transfer request to a storage device, and the inline encryption
hardware will use that context to en/decrypt the data. The inline
encryption hardware is part of the storage device, and it conceptually sits
on the data path between system memory and the storage device.

Inline Encryption hardware implementations often function around the
concept of "keyslots". These implementations often have a limited number
of "keyslots", each of which can hold a key (we say that a key can be
"programmed" into a keyslot). Requests made to the storage device may have
a keyslot and a data unit number associated with them, and the inline
encryption hardware will en/decrypt the data in the requests using the key
programmed into that associated keyslot and the data unit number specified
with the request.

As keyslots are limited, and programming keys may be expensive in many
implementations, and multiple requests may use exactly the same encryption
contexts, we introduce a Keyslot Manager to efficiently manage keyslots.

We also introduce a blk_crypto_key, which will represent the key that's
programmed into keyslots managed by keyslot managers. The keyslot manager
also functions as the interface that upper layers will use to program keys
into inline encryption hardware. For more information on the Keyslot
Manager, refer to documentation found in block/keyslot-manager.c and
linux/keyslot-manager.h.

Co-developed-by: Eric Biggers 
Signed-off-by: Eric Biggers 
Signed-off-by: Satya Tangirala 
Reviewed-by: Eric Biggers 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Jens Axboe