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2a904d00855f94cb85751e45fa494f225d44ae0d
linux/block
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Ming Lei 2a904d0085 blk-mq: remove hctx_lock and hctx_unlock 
Remove hctx_lock and hctx_unlock, and add one helper of
blk_mq_run_dispatch_ops() to run code block defined in dispatch_ops
with rcu/srcu read held.

Compared with hctx_lock()/hctx_unlock():

1) remove 2 branch to 1, so we just need to check
(hctx->flags & BLK_MQ_F_BLOCKING) once when running one dispatch_ops

2) srcu_idx needn't to be touched in case of non-blocking

3) might_sleep_if() can be moved to the blocking branch

Also put the added blk_mq_run_dispatch_ops() in private header, so that
the following patch can use it out of blk-mq.c.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20211203131534.3668411-2-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-12-03 14:51:29 -07:00
..
partitions
block: remove GENHD_FL_EXT_DEVT
2021-11-29 06:38:35 -07:00
badblocks.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
bdev.c
block: Remove redundant initialization of variable ret
2021-11-29 06:41:29 -07:00
bfq-cgroup.c
block, bfq: fix UAF problem in bfqg_stats_init()
2021-10-19 15:18:30 -06:00
bfq-iosched.c
block: simplify ioc_lookup_icq
2021-11-29 06:41:29 -07:00
bfq-iosched.h
bfq: Provide helper to generate bfqq name
2021-11-29 06:38:52 -07:00
bfq-wf2q.c
block: Introduce IOPRIO_NR_LEVELS
2021-08-18 07:21:12 -06:00
bio-integrity.c
block: convert the rest of block to bdev_get_queue
2021-10-18 06:17:37 -06:00
bio.c
block: avoid extra iter advance with async iocb
2021-10-27 06:54:58 -06:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT
2019-11-07 12:28:13 -07:00
blk-cgroup.c
block: don't include <linux/part_stat.h> in blk.h
2021-11-29 06:38:44 -07:00
blk-core.c
block: don't include <linux/part_stat.h> in blk.h
2021-11-29 06:38:44 -07:00
blk-crypto-fallback.c
blk-crypto: rename blk_keyslot_manager to blk_crypto_profile
2021-10-21 10:49:32 -06:00
blk-crypto-internal.h
block: move struct request to blk-mq.h
2021-10-18 06:17:02 -06:00
blk-crypto-profile.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-crypto.c
blk-crypto: rename blk_keyslot_manager to blk_crypto_profile
2021-10-21 10:49:32 -06:00
blk-flush.c
block: switch to atomic_t for request references
2021-12-03 14:51:29 -07:00
blk-ia-ranges.c
block: fix kerneldoc for disk_register_independent_access__ranges()
2021-11-11 11:52:30 -07:00
blk-integrity.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-ioc.c
block: simplify ioc_lookup_icq
2021-11-29 06:41:29 -07:00
blk-iocost.c
block: convert the rest of block to bdev_get_queue
2021-10-18 06:17:37 -06:00
blk-iolatency.c
mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h>
2021-10-18 06:17:01 -06:00
blk-ioprio.c
blk-ioprio: don't set bio priority if not needed
2021-11-29 06:38:35 -07:00
blk-ioprio.h
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-lib.c
block: export blk_next_bio()
2021-06-17 15:51:20 +02:00
blk-map.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
blk-merge.c
block: don't check ->rq_disk in merges
2021-11-29 06:41:29 -07:00
blk-mq-cpumap.c
blk-mq: remove the calling of local_memory_node()
2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
block: Cleanup license notice
2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c
blk-mq: check q->poll_stat in queue_poll_stat_show
2021-12-02 08:20:49 -07:00
blk-mq-debugfs.h
blk-mq: no need to check return value of debugfs_create functions
2019-06-13 03:00:30 -06:00
blk-mq-pci.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-rdma.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-sched.c
block: move blk_mq_sched_assign_ioc to blk-ioc.c
2021-11-29 06:41:29 -07:00
blk-mq-sched.h
block: move blk_mq_sched_assign_ioc to blk-ioc.c
2021-11-29 06:41:29 -07:00
blk-mq-sysfs.c
block: remove blk-mq-sysfs dead code
2021-08-02 13:37:29 -06:00
blk-mq-tag.c
block: switch to atomic_t for request references
2021-12-03 14:51:29 -07:00
blk-mq-tag.h
block: move blk_mq_tag_to_rq() inline
2021-10-19 05:55:41 -06:00
blk-mq-virtio.c
blk-mq: Fix typo in comment
2020-03-17 20:55:21 +01:00
blk-mq.c
blk-mq: remove hctx_lock and hctx_unlock
2021-12-03 14:51:29 -07:00
blk-mq.h
blk-mq: remove hctx_lock and hctx_unlock
2021-12-03 14:51:29 -07:00
blk-pm.c
scsi: block: Fix a race in the runtime power management code
2020-12-09 11:41:41 -05:00
blk-pm.h
block: Remove unused blk_pm_*() function definitions
2021-02-22 06:33:48 -07:00
blk-rq-qos.c
rq-qos: fix missed wake-ups in rq_qos_throttle try two
2021-06-08 15:12:57 -06:00
blk-rq-qos.h
block: only mark bio as tracked if it really is tracked
2021-10-18 08:50:47 -06:00
blk-settings.c
block: Fix partition check for host-aware zoned block devices
2021-10-27 06:58:01 -06:00
blk-stat.c
block: only allocate poll_stats if there's a user of them
2021-11-29 06:38:35 -07:00
blk-stat.h
block: only allocate poll_stats if there's a user of them
2021-11-29 06:38:35 -07:00
blk-sysfs.c
block: don't include blk-mq-sched.h in blk.h
2021-11-29 06:38:44 -07:00
blk-throttle.c
block: don't include blk-mq.h in blk.h
2021-11-29 06:38:44 -07:00
blk-throttle.h
block: move blk-throtl fast path inline
2021-10-18 06:17:03 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: prevent NULL pointer dereference in wb_timer_fn
2021-10-19 06:13:41 -06:00
blk-wbt.h
blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()
2021-06-21 15:03:41 -06:00
blk-zoned.c
block: Hold invalidate_lock in BLKRESETZONE ioctl
2021-11-11 11:52:46 -07:00
blk.h
block: switch to atomic_t for request references
2021-12-03 14:51:29 -07:00
bounce.c
mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h>
2021-10-18 06:17:01 -06:00
bsg-lib.c
block: remove the gendisk argument to blk_execute_rq
2021-11-29 06:41:29 -07:00
bsg.c
scsi: bsg: Fix device unregistration
2021-09-14 00:22:15 -04:00
disk-events.c
block: return errors from disk_alloc_events
2021-08-23 12:55:45 -06:00
elevator.c
block: remove the e argument to elevator_exit
2021-11-29 06:38:44 -07:00
elevator.h
block: move elevator.h to block/
2021-10-18 06:17:01 -06:00
fops.c
block: move direct_IO into our own read_iter handler
2021-12-03 14:51:29 -07:00
genhd.c
block: don't include <linux/part_stat.h> in blk.h
2021-11-29 06:38:44 -07:00
holder.c
block: drop unused includes in <linux/genhd.h>
2021-10-18 06:17:02 -06:00
ioctl.c
block: merge disk_scan_partitions and blkdev_reread_part
2021-11-29 06:35:21 -07:00
ioprio.c
block: Check ADMIN before NICE for IOPRIO_CLASS_RT
2021-11-15 14:28:59 -07:00
Kconfig
block: move menu "Partition type" to block/partitions/Kconfig
2021-10-18 06:17:35 -06:00
Kconfig.iosched
block: simplify Kconfig files
2021-10-18 06:17:35 -06:00
kyber-iosched.c
blk-mq: Stop using pointers for blk_mq_tags bitmap tags
2021-10-18 06:17:03 -06:00
Makefile
block: remove blk-exec.c
2021-11-29 06:34:50 -07:00
mq-deadline.c
blk-mq: Stop using pointers for blk_mq_tags bitmap tags
2021-10-18 06:17:03 -06:00
opal_proto.h
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
sed-opal.c
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
t10-pi.c
block: move integrity handling out of <linux/blkdev.h>
2021-10-18 06:17:02 -06:00