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Damien Le Moal eca2040972 scsi: block: ioprio: Clean up interface definition 
The I/O priority user interface defines the 16-bits ioprio values as the
combination of the upper 3-bits for an I/O priority class and the lower
13-bits as priority data. However, the kernel only uses the lower 3-bits of
the priority data to define priority levels for the RT and BE priority
classes. The data part of an ioprio value is completely ignored for the
IDLE and NONE classes. This is enforced by checks done in
ioprio_check_cap(), which is called for all paths that allow defining an
I/O priority for I/Os: the per-context ioprio_set() system call, aio
interface and io_uring interface.

Clarify this fact in the uapi ioprio.h header file and introduce the
IOPRIO_PRIO_LEVEL_MASK and IOPRIO_PRIO_LEVEL() macros for users to define
and get priority levels in an ioprio value. The coarser macro
IOPRIO_PRIO_DATA() is retained for backward compatibility with old
applications already using it. There is no functional change introduced
with this.

In-kernel users of the IOPRIO_PRIO_DATA() macro which are explicitly
handling I/O priority data as a priority level are modified to use the new
IOPRIO_PRIO_LEVEL() macro without any functional change. Since f2fs is the
only user of this macro not explicitly using that value as a priority
level, it is left unchanged.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Link: https://lore.kernel.org/r/20230511011356.227789-2-nks@flawful.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 		2023-05-22 17:05:18 -04:00
..
partitions block: Cleanup set_capacity()/bdev_set_nr_sectors() 2023-04-24 08:48:09 -06:00
Kconfig for-6.4/block-2023-04-21 2023-04-26 12:52:58 -07:00
Kconfig.iosched block: Default to use cgroup support for BFQ 2023-01-30 09:42:42 -07:00
Makefile blk-mq-rdma: remove queue mapping helper for rdma devices 2023-04-13 08:59:05 +02:00
badblocks.c block/badblocks: Remove redundant assignments 2022-04-23 07:15:26 -06:00
bdev.c block: sync part's ->bd_has_submit_bio with disk's 2023-04-25 07:36:02 -06:00
bfq-cgroup.c blkcg: Restructure blkg_conf_prep() and friends 2023-04-13 06:46:49 -06:00
bfq-iosched.c scsi: block: ioprio: Clean up interface definition 2023-05-22 17:05:18 -04:00
bfq-iosched.h block, bfq: remove BFQ_WEIGHT_LEGACY_DFL 2023-04-06 16:17:32 -06:00
bfq-wf2q.c block, bfq: inject I/O to underutilized actuators 2023-01-29 15:18:33 -07:00
bio-integrity.c block: bio-integrity: Copy flags when bio_integrity_payload is cloned 2023-02-16 11:05:41 -07:00
bio.c ext4: Convert ext4_bio_write_page() to use a folio 2023-04-06 13:39:50 -04:00
blk-cgroup-fc-appid.c cgroup: Homogenize cgroup_get_from_id() return value 2022-08-26 10:57:41 -10:00
blk-cgroup-rwstat.c Revert "blk-cgroup: pin the gendisk in struct blkcg_gq" 2023-02-14 14:24:09 -07:00
blk-cgroup-rwstat.h block: Use the new blk_opf_t type 2022-07-14 12:14:30 -06:00
blk-cgroup.c for-6.4/block-2023-05-06 2023-05-06 08:28:58 -07:00
blk-cgroup.h for-6.4/block-2023-04-21 2023-04-26 12:52:58 -07:00
blk-core.c for-6.4/block-2023-04-21 2023-04-26 12:52:58 -07:00
blk-crypto-fallback.c treewide: use get_random_bytes() when possible 2022-10-11 17:42:58 -06:00
blk-crypto-internal.h blk-crypto: remove blk_crypto_insert_cloned_request() 2023-03-16 09:35:09 -06:00
blk-crypto-profile.c blk-crypto: drop the NULL check from blk_crypto_put_keyslot() 2023-03-16 09:35:09 -06:00
blk-crypto-sysfs.c block: make kobj_type structures constant 2023-02-09 09:38:16 -07:00
blk-crypto.c blk-crypto: make blk_crypto_evict_key() more robust 2023-03-16 09:35:09 -06:00
blk-flush.c blk-mq: fix the blk_mq_add_to_requeue_list call in blk_kick_flush 2023-04-16 13:01:43 -06:00
blk-ia-ranges.c block: make kobj_type structures constant 2023-02-09 09:38:16 -07:00
blk-integrity.c blk-integrity: register sysfs attributes on struct device 2023-04-26 18:22:50 -06:00
blk-ioc.c block: fix default IO priority handling again 2022-06-27 06:29:12 -06:00
blk-iocost.c blkcg: Restructure blkg_conf_prep() and friends 2023-04-13 06:46:49 -06:00
blk-iolatency.c blk-iolatency: Make initialization lazy 2023-04-13 06:46:49 -06:00
blk-ioprio.c blk-cgroup: pass a gendisk to pd_alloc_fn 2023-02-03 08:20:05 -07:00
blk-ioprio.h blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit 2022-09-26 19:09:31 -06:00
blk-lib.c blk-lib: fix blkdev_issue_secure_erase 2022-09-15 00:25:17 -06:00
blk-map.c iov_iter: add iter_iovec() helper 2023-03-30 08:12:29 -06:00
blk-merge.c blk-mq: release crypto keyslot before reporting I/O complete 2023-03-16 09:35:09 -06:00
blk-mq-cpumap.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-debugfs-zoned.c block: move zone related fields to struct gendisk 2022-07-06 06:46:26 -06:00
blk-mq-debugfs.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-debugfs.h block: remove per-disk debugfs files in blk_unregister_queue 2022-06-17 07:31:05 -06:00
blk-mq-pci.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-sched.c blk-mq: cleanup __blk_mq_sched_dispatch_requests 2023-04-13 06:57:18 -06:00
blk-mq-sched.h blk-mq: move blk_mq_sched_insert_request to blk-mq.c 2023-04-13 06:52:29 -06:00
blk-mq-sysfs.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-tag.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-virtio.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq.c for-6.4/block-2023-04-21 2023-04-26 12:52:58 -07:00
blk-mq.h for-6.4/block-2023-04-21 2023-04-26 12:52:58 -07:00
blk-pm.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-pm.h block: Remove unused blk_pm_*() function definitions 2021-02-22 06:33:48 -07:00
blk-rq-qos.c blk-rq-qos: store a gendisk instead of request_queue in struct rq_qos 2023-02-03 08:20:05 -07:00
blk-rq-qos.h blk-iolatency: s/blkcg_rq_qos/iolat_rq_qos/ 2023-04-13 06:46:49 -06:00
blk-settings.c blk-wbt: move private information from blk-wbt.h to blk-wbt.c 2023-02-03 08:20:05 -07:00
blk-stat.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-stat.h block: make queue stat accounting a reference 2021-12-14 17:23:05 -07:00
blk-sysfs.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-throttle.c blk-throttle: only enable blk-stat when BLK_DEV_THROTTLING_LOW 2023-04-13 06:48:11 -06:00
blk-throttle.h blk-throttle: pass a gendisk to blk_throtl_cancel_bios 2022-09-26 19:17:28 -06:00
blk-timeout.c block: blk-timeout: delete duplicated word 2020-07-31 16:29:47 -06:00
blk-wbt.c blk-rq-qos: store a gendisk instead of request_queue in struct rq_qos 2023-02-03 08:20:05 -07:00
blk-wbt.h blk-wbt: move private information from blk-wbt.h to blk-wbt.c 2023-02-03 08:20:05 -07:00
blk-zoned.c block: remove more NULL checks after bdev_get_queue() 2023-02-21 09:23:22 -07:00
blk.h blk-integrity: register sysfs attributes on struct device 2023-04-26 18:22:50 -06:00
bounce.c block: change the blk_queue_bounce calling convention 2022-08-02 17:22:54 -06:00
bsg-lib.c blk-mq: move the call to blk_put_queue out of blk_mq_destroy_queue 2022-10-25 08:25:10 -06:00
bsg.c driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
disk-events.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
elevator.c block: make kobj_type structures constant 2023-02-09 09:38:16 -07:00
elevator.h blk-mq: pass a flags argument to elevator_type->insert_requests 2023-04-13 06:52:30 -06:00
fops.c block: don't allow multiple bios for IOCB_NOWAIT issue 2023-01-29 15:18:34 -07:00
genhd.c for-6.4/block-2023-05-06 2023-05-06 08:28:58 -07:00
holder.c block: don't allow a disk link holder to itself 2022-11-16 15:19:56 -07:00
ioctl.c block: fix scan partition for exclusively open device again 2023-02-17 06:15:57 -07:00
ioprio.c scsi: block: ioprio: Clean up interface definition 2023-05-22 17:05:18 -04:00
kyber-iosched.c blk-mq: pass a flags argument to elevator_type->insert_requests 2023-04-13 06:52:30 -06:00
mq-deadline.c blk-mq: pass a flags argument to elevator_type->insert_requests 2023-04-13 06:52:30 -06:00
opal_proto.h sed-opal: allow user authority to get locking range attributes. 2023-04-05 07:46:25 -06:00
sed-opal.c sed-opal: geometry feature reporting command 2023-04-19 14:07:13 -06:00
t10-pi.c block: add pi for extended integrity 2022-03-07 12:48:35 -07:00