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Douglas Anderson f7e6636831 blk-mq: In blk_mq_dispatch_rq_list() "no budget" is a reason to kick 
[ Upstream commit ab3cee3762 ]

In blk_mq_dispatch_rq_list(), if blk_mq_sched_needs_restart() returns
true and the driver returns BLK_STS_RESOURCE then we'll kick the
queue.  However, there's another case where we might need to kick it.
If we were unable to get budget we can be in much the same state as
when the driver returns BLK_STS_RESOURCE, so we should treat it the
same.

It should be noted that even if we add a whole bunch of extra kicking
to the queue in other patches this patch is still important.
Specifically any kicking that happened before we re-spliced leftover
requests into 'hctx->dispatch' wouldn't have found any work, so we
really need to make sure we kick ourselves after we've done the
splicing.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30 11:50:54 +01:00
..
partitions docs: admin-guide: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
badblocks.c
bfq-cgroup.c bfq: fix blkio cgroup leakage v4 2020-09-03 11:26:54 +02:00
bfq-iosched.c block: only call sched requeue_request() for scheduled requests 2020-09-23 12:40:37 +02:00
bfq-iosched.h bfq: fix blkio cgroup leakage v4 2020-09-03 11:26:54 +02:00
bfq-wf2q.c bfq: fix blkio cgroup leakage v4 2020-09-03 11:26:54 +02:00
bio-integrity.c block: release bip in a right way in error path 2020-07-16 08:16:36 +02:00
bio.c block/diskstats: more accurate approximation of io_ticks for slow disks 2020-10-07 08:01:29 +02:00
blk-cgroup.c blk-cgroup: Pre-allocate tree node on blkg_conf_prep 2020-11-10 12:37:30 +01:00
blk-core.c block: ratelimit handle_bad_sector() message 2020-10-29 09:58:01 +01:00
blk-exec.c block: add SPDX tags to block layer files missing licensing information 2019-04-30 16:12:03 -06:00
blk-flush.c blk-mq: insert passthrough request into hctx->dispatch directly 2020-03-21 08:11:52 +01:00
blk-integrity.c block: centralize PI remapping logic to the block layer 2019-09-17 20:03:49 -06:00
blk-ioc.c block: Fix use-after-free issue accessing struct io_cq 2020-04-17 10:50:04 +02:00
blk-iocost.c blk-iocost: ioc_pd_free() shouldn't assume irq disabled 2020-09-09 19:12:35 +02:00
blk-iolatency.c blkcg: s/RQ_QOS_CGROUP/RQ_QOS_LATENCY/ 2019-08-28 21:17:08 -06:00
blk-lib.c
blk-map.c block: fix memleak when __blk_rq_map_user_iov() is failed 2020-01-12 12:21:43 +01:00
blk-merge.c block: fix get_max_io_size() 2020-09-03 11:27:01 +02:00
blk-mq-cpumap.c blk-mq: balance mapping between present CPUs and queues 2019-08-04 21:43:12 -06:00
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c blk-mq-debugfs: update blk_queue_flag_name[] accordingly for new flags 2020-07-22 09:32:52 +02:00
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 blk-mq: order adding requests to hctx->dispatch and checking SCHED_RESTART 2020-09-03 11:27:01 +02:00
blk-mq-sched.h block: only call sched requeue_request() for scheduled requests 2020-09-23 12:40:37 +02:00
blk-mq-sysfs.c blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue 2020-10-29 09:57:34 +01:00
blk-mq-tag.c blk-mq: introduce blk_mq_tagset_wait_completed_request() 2019-08-04 21:41:29 -06:00
blk-mq-tag.h
blk-mq-virtio.c block: Fix blk_mq_*_map_queues() kernel-doc headers 2019-05-31 15:12:34 -06:00
blk-mq.c blk-mq: In blk_mq_dispatch_rq_list() "no budget" is a reason to kick 2020-12-30 11:50:54 +01:00
blk-mq.h blk-mq: insert passthrough request into hctx->dispatch directly 2020-03-21 08:11:52 +01:00
blk-pm.c block: bypass blk_set_runtime_active for uninitialized q->dev 2019-09-12 07:11:56 -06:00
blk-pm.h
blk-rq-qos.c blk-wbt: fix performance regression in wbt scale_up/scale_down 2019-10-06 09:26:41 -06:00
blk-rq-qos.h blk-rq-qos: fix first node deletion of rq_qos_del() 2019-10-15 10:13:13 -06:00
blk-settings.c block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices 2020-04-17 10:50:01 +02:00
blk-softirq.c
blk-stat.c block: add SPDX tags to block layer files missing licensing information 2019-04-30 16:12:03 -06:00
blk-stat.h
blk-sysfs.c blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue 2020-10-29 09:57:34 +01:00
blk-throttle.c block: make rq sector size accessible for block stats 2019-09-15 16:02:08 -06:00
blk-timeout.c block: add SPDX tags to block layer files missing licensing information 2019-04-30 16:12:03 -06:00
blk-wbt.c blk-wbt: fix performance regression in wbt scale_up/scale_down 2019-10-06 09:26:41 -06:00
blk-wbt.h block/rq_qos: implement rq_qos_ops->queue_depth_changed() 2019-08-28 21:17:07 -06:00
blk-zoned.c block: Simplify REQ_OP_ZONE_RESET_ALL handling 2020-12-30 11:50:54 +01:00
blk.h block: fix memleak of bio integrity data 2020-01-26 10:01:09 +01:00
bounce.c
bsg-lib.c block: Fix the type of 'sts' in bsg_queue_rq() 2020-01-23 08:22:44 +01:00
bsg.c
cmdline-parser.c
compat_ioctl.c compat_ioctl: block: handle BLKGETZONESZ/BLKGETNRZONES 2020-01-09 10:19:58 +01:00
elevator.c block: Fix elv_support_iosched() 2019-10-14 13:54:09 -06:00
genhd.c block: Delay default elevator initialization 2019-09-05 19:52:34 -06:00
ioctl.c block: add SPDX tags to block layer files missing licensing information 2019-04-30 16:12:03 -06:00
ioprio.c docs: block: convert to ReST 2019-07-15 09:20:27 -03:00
Kconfig blkcg: implement blk-iocost 2019-08-28 21:17:12 -06:00
Kconfig.iosched docs: block: convert to ReST 2019-07-15 09:20:27 -03:00
kyber-iosched.c blk-mq: remove blk_mq_put_ctx() 2019-07-02 21:03:27 -06:00
Makefile blkcg: implement blk-iocost 2019-08-28 21:17:12 -06:00
mq-deadline.c block: Introduce elevator features 2019-09-05 19:52:33 -06:00
opal_proto.h block: sed-opal: Removed duplicate OPAL_METHOD_LENGTH definition 2019-08-20 09:34:49 -06:00
partition-generic.c
scsi_ioctl.c
sed-opal.c block: sed-opal: fix sparse warning: convert __be64 data 2019-10-03 14:21:32 -06:00
t10-pi.c block: t10-pi: fix -Wswitch warning 2019-09-23 08:05:19 -06:00