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-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmRCvcIQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpk+JEACj01t7Xen2+Razagu3aTx9tmRGFnTNR3MY raFG6B1TADk1TgCWWa2C4Dj67SOispPLm8hbIcOxqB1UscDWCCwjmnr/debADFzW Ap6shv/IRwVGmDp+F7ocYas0ynwooOJg4WJTwkSKz2o4m4p3vzlwAKi4fLiSjbXp gJTrA7WEvDOVjzajlTFUtjr8rc6PdunbGm25cPIufAxUEhvttYex2VbVqjDmfNsE 8tyyk9RWbe4AY/ZYaGXVn4yQ/CgL/sXFkVc5noRXNfAQ/K3CVLQrFLJ3JlwUHpiA xXBor21TUWCZEo33Y2G5NConAYqE7etoPTkaTDO3/aZ+dAMFyhC/WAYLz1KZGMh1 +g1fDX1QKEd40H2lfDXvqF1ob7Ut8EzUx+gvBXcc3/AiRpJ5rjfOcj6LPUMUqQJk nucLLFTiMKecnDMBERbvixqbaTyrjvkFEj2wYJvgj1LKXAd+x/bj8SGajs9r88Nb 9YT9ai/+Yl7Ppfb67rCgXJU7oNZQSAQ2H+X/l2jbiqImOgq1u/45AmINnbanS7HH Y1I8pbH45AcnCgkJRoQwrNX3BnTOTBJ+D/4Fl4b8jsihq0D3UtwCwPCObHP4LW9S MUNPhP3tUuYsAgXqX80+Sao6SYvXDwnbWOM+LOaaZXgjb1ndwDUZXpto8Ra8WB1u 8kM6s6ZR7g== =W1Zb -----END PGP SIGNATURE----- Merge tag 'for-6.4/block-2023-04-21' of git://git.kernel.dk/linux Pull block updates from Jens Axboe: - drbd patches, bringing us closer to unifying the out-of-tree version and the in tree one (Andreas, Christoph) - support for auto-quiesce for the s390 dasd driver (Stefan) - MD pull request via Song: - md/bitmap: Optimal last page size (Jon Derrick) - Various raid10 fixes (Yu Kuai, Li Nan) - md: add error_handlers for raid0 and linear (Mariusz Tkaczyk) - NVMe pull request via Christoph: - Drop redundant pci_enable_pcie_error_reporting (Bjorn Helgaas) - Validate nvmet module parameters (Chaitanya Kulkarni) - Fence TCP socket on receive error (Chris Leech) - Fix async event trace event (Keith Busch) - Minor cleanups (Chaitanya Kulkarni, zhenwei pi) - Fix and cleanup nvmet Identify handling (Damien Le Moal, Christoph Hellwig) - Fix double blk_mq_complete_request race in the timeout handler (Lei Yin) - Fix irq locking in nvme-fcloop (Ming Lei) - Remove queue mapping helper for rdma devices (Sagi Grimberg) - use structured request attribute checks for nbd (Jakub) - fix blk-crypto race conditions between keyslot management (Eric) - add sed-opal support for reading read locking range attributes (Ondrej) - make fault injection configurable for null_blk (Akinobu) - clean up the request insertion API (Christoph) - clean up the queue running API (Christoph) - blkg config helper cleanups (Tejun) - lazy init support for blk-iolatency (Tejun) - various fixes and tweaks to ublk (Ming) - remove hybrid polling. It hasn't really been useful since we got async polled IO support, and these days we don't support sync polled IO at all (Keith) - misc fixes, cleanups, improvements (Zhong, Ondrej, Colin, Chengming, Chaitanya, me) * tag 'for-6.4/block-2023-04-21' of git://git.kernel.dk/linux: (118 commits) nbd: fix incomplete validation of ioctl arg ublk: don't return 0 in case of any failure sed-opal: geometry feature reporting command null_blk: Always check queue mode setting from configfs block: ublk: switch to ioctl command encoding blk-mq: fix the blk_mq_add_to_requeue_list call in blk_kick_flush block, bfq: Fix division by zero error on zero wsum fault-inject: fix build error when FAULT_INJECTION_CONFIGFS=y and CONFIGFS_FS=m block: store bdev->bd_disk->fops->submit_bio state in bdev block: re-arrange the struct block_device fields for better layout md/raid5: remove unused working_disks variable md/raid10: don't call bio_start_io_acct twice for bio which experienced read error md/raid10: fix memleak of md thread md/raid10: fix memleak for 'conf->bio_split' md/raid10: fix leak of 'r10bio->remaining' for recovery md/raid10: don't BUG_ON() in raise_barrier() md: fix soft lockup in status_resync md: add error_handlers for raid0 and linear md: Use optimal I/O size for last bitmap page md: Fix types in sb writer ...
230 lines
6.8 KiB
Text
230 lines
6.8 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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#
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# Block layer core configuration
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#
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menuconfig BLOCK
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bool "Enable the block layer" if EXPERT
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default y
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select SBITMAP
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help
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Provide block layer support for the kernel.
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Disable this option to remove the block layer support from the
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kernel. This may be useful for embedded devices.
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If this option is disabled:
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- block device files will become unusable
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- some filesystems (such as ext3) will become unavailable.
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Also, SCSI character devices and USB storage will be disabled since
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they make use of various block layer definitions and facilities.
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Say Y here unless you know you really don't want to mount disks and
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suchlike.
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if BLOCK
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config BLOCK_LEGACY_AUTOLOAD
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bool "Legacy autoloading support"
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default y
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help
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Enable loading modules and creating block device instances based on
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accesses through their device special file. This is a historic Linux
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feature and makes no sense in a udev world where device files are
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created on demand, but scripts that manually create device nodes and
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then call losetup might rely on this behavior.
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config BLK_RQ_ALLOC_TIME
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bool
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config BLK_CGROUP_RWSTAT
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bool
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config BLK_CGROUP_PUNT_BIO
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bool
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config BLK_DEV_BSG_COMMON
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tristate
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config BLK_ICQ
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bool
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config BLK_DEV_BSGLIB
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bool "Block layer SG support v4 helper lib"
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select BLK_DEV_BSG_COMMON
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help
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Subsystems will normally enable this if needed. Users will not
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normally need to manually enable this.
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If unsure, say N.
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config BLK_DEV_INTEGRITY
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bool "Block layer data integrity support"
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help
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Some storage devices allow extra information to be
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stored/retrieved to help protect the data. The block layer
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data integrity option provides hooks which can be used by
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filesystems to ensure better data integrity.
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Say yes here if you have a storage device that provides the
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T10/SCSI Data Integrity Field or the T13/ATA External Path
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Protection. If in doubt, say N.
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config BLK_DEV_INTEGRITY_T10
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tristate
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depends on BLK_DEV_INTEGRITY
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select CRC_T10DIF
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select CRC64_ROCKSOFT
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config BLK_DEV_ZONED
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bool "Zoned block device support"
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select MQ_IOSCHED_DEADLINE
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help
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Block layer zoned block device support. This option enables
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support for ZAC/ZBC/ZNS host-managed and host-aware zoned block
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devices.
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Say yes here if you have a ZAC, ZBC, or ZNS storage device.
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config BLK_DEV_THROTTLING
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bool "Block layer bio throttling support"
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depends on BLK_CGROUP
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select BLK_CGROUP_RWSTAT
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help
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Block layer bio throttling support. It can be used to limit
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the IO rate to a device. IO rate policies are per cgroup and
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one needs to mount and use blkio cgroup controller for creating
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cgroups and specifying per device IO rate policies.
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See Documentation/admin-guide/cgroup-v1/blkio-controller.rst for more information.
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config BLK_DEV_THROTTLING_LOW
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bool "Block throttling .low limit interface support (EXPERIMENTAL)"
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depends on BLK_DEV_THROTTLING
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help
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Add .low limit interface for block throttling. The low limit is a best
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effort limit to prioritize cgroups. Depending on the setting, the limit
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can be used to protect cgroups in terms of bandwidth/iops and better
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utilize disk resource.
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Note, this is an experimental interface and could be changed someday.
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config BLK_WBT
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bool "Enable support for block device writeback throttling"
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help
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Enabling this option enables the block layer to throttle buffered
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background writeback from the VM, making it more smooth and having
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less impact on foreground operations. The throttling is done
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dynamically on an algorithm loosely based on CoDel, factoring in
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the realtime performance of the disk.
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config BLK_WBT_MQ
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bool "Enable writeback throttling by default"
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default y
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depends on BLK_WBT
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help
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Enable writeback throttling by default for request-based block devices.
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config BLK_CGROUP_IOLATENCY
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bool "Enable support for latency based cgroup IO protection"
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depends on BLK_CGROUP
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help
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Enabling this option enables the .latency interface for IO throttling.
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The IO controller will attempt to maintain average IO latencies below
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the configured latency target, throttling anybody with a higher latency
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target than the victimized group.
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Note, this is an experimental interface and could be changed someday.
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config BLK_CGROUP_FC_APPID
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bool "Enable support to track FC I/O Traffic across cgroup applications"
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depends on BLK_CGROUP && NVME_FC
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help
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Enabling this option enables the support to track FC I/O traffic across
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cgroup applications. It enables the Fabric and the storage targets to
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identify, monitor, and handle FC traffic based on VM tags by inserting
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application specific identification into the FC frame.
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config BLK_CGROUP_IOCOST
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bool "Enable support for cost model based cgroup IO controller"
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depends on BLK_CGROUP
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select BLK_RQ_ALLOC_TIME
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help
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Enabling this option enables the .weight interface for cost
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model based proportional IO control. The IO controller
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distributes IO capacity between different groups based on
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their share of the overall weight distribution.
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config BLK_CGROUP_IOPRIO
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bool "Cgroup I/O controller for assigning an I/O priority class"
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depends on BLK_CGROUP
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help
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Enable the .prio interface for assigning an I/O priority class to
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requests. The I/O priority class affects the order in which an I/O
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scheduler and block devices process requests. Only some I/O schedulers
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and some block devices support I/O priorities.
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config BLK_DEBUG_FS
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bool "Block layer debugging information in debugfs"
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default y
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depends on DEBUG_FS
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help
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Include block layer debugging information in debugfs. This information
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is mostly useful for kernel developers, but it doesn't incur any cost
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at runtime.
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Unless you are building a kernel for a tiny system, you should
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say Y here.
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config BLK_DEBUG_FS_ZONED
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bool
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default BLK_DEBUG_FS && BLK_DEV_ZONED
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config BLK_SED_OPAL
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bool "Logic for interfacing with Opal enabled SEDs"
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help
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Builds Logic for interfacing with Opal enabled controllers.
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Enabling this option enables users to setup/unlock/lock
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Locking ranges for SED devices using the Opal protocol.
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config BLK_INLINE_ENCRYPTION
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bool "Enable inline encryption support in block layer"
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help
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Build the blk-crypto subsystem. Enabling this lets the
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block layer handle encryption, so users can take
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advantage of inline encryption hardware if present.
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config BLK_INLINE_ENCRYPTION_FALLBACK
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bool "Enable crypto API fallback for blk-crypto"
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depends on BLK_INLINE_ENCRYPTION
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select CRYPTO
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select CRYPTO_SKCIPHER
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help
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Enabling this lets the block layer handle inline encryption
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by falling back to the kernel crypto API when inline
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encryption hardware is not present.
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source "block/partitions/Kconfig"
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config BLK_MQ_PCI
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def_bool PCI
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config BLK_MQ_VIRTIO
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bool
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depends on VIRTIO
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default y
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config BLK_PM
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def_bool PM
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# do not use in new code
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config BLOCK_HOLDER_DEPRECATED
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bool
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config BLK_MQ_STACKING
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bool
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source "block/Kconfig.iosched"
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endif # BLOCK
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