Ming Lei d9d149a396 blk-mq: comment on races related with timeout handler ...

This patch adds comment on two races related with
timeout handler:

- requeue from queue busy vs. timeout
- rq free & reallocation vs. timeout

Both the races themselves and current solution aren't
explicit enough, so add comments on them.

Cc: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

2017-03-29 08:03:42 -06:00

..

partitions

partitions/efi: Fix integer overflow in GPT size calculation

2017-01-17 09:02:31 -07:00

badblocks.c

badblocks: badblocks_set/clear update unacked_exist

2016-10-21 15:45:47 -06:00

bio-integrity.c

block: remove bio_is_rw

2016-10-28 08:45:17 -06:00

bio.c

blk-throttle: add a simple idle detection

2017-03-28 08:02:20 -06:00

blk-cgroup.c

blkcg: allocate struct blkcg_gq outside request queue spinlock

2017-03-28 15:59:04 -06:00

blk-core.c

block: track request size in blk_issue_stat

2017-03-28 08:02:20 -06:00

blk-exec.c

block: introduce blk_rq_is_passthrough

2017-01-31 14:00:34 -07:00

blk-flush.c

block: remove outdated part of blkdev_issue_flush() comment

2017-03-24 15:41:30 -06:00

blk-integrity.c

block: constify struct blk_integrity_profile

2017-03-24 20:34:39 -06:00

blk-ioc.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2017-03-03 10:53:35 -08:00

blk-lib.c

block: correct documentation for blkdev_issue_discard() flags

2017-03-24 15:41:28 -06:00

blk-map.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

blk-merge.c

block: optionally merge discontiguous discard bios into a single request

2017-02-08 13:43:08 -07:00

blk-mq-cpumap.c

blk-mq: export blk_mq_map_queues

2016-11-08 17:30:00 -05:00

blk-mq-debugfs.c

blk-stat: convert to callback-based statistics reporting

2017-03-21 10:03:11 -06:00

blk-mq-pci.c

blk_mq: linux/blk-mq.h does not include all the headers it depends on

2016-09-19 08:21:51 -06:00

blk-mq-sched.c

blk-mq: move update of tags->rqs to __blk_mq_alloc_request()

2017-03-02 08:56:04 -07:00

blk-mq-sched.h

blk-mq-sched: separate mark hctx and queue restart operations

2017-02-23 11:55:47 -07:00

blk-mq-sysfs.c

blk-mq: free hctx->cpumask in release handler of hctx's kobject

2017-03-08 09:56:12 -07:00

blk-mq-tag.c

blk-mq: Fix tagset reinit in the presence of cpu hot-unplug

2017-03-13 08:14:23 -06:00

blk-mq-tag.h

blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset

2017-03-02 08:56:04 -07:00

blk-mq-virtio.c

blk-mq: provide a default queue mapping for virtio device

2017-02-27 20:54:05 +02:00

blk-mq.c

blk-mq: comment on races related with timeout handler

2017-03-29 08:03:42 -06:00

blk-mq.h

blk-stat: convert to callback-based statistics reporting

2017-03-21 10:03:11 -06:00

blk-settings.c

block: optionally merge discontiguous discard bios into a single request

2017-02-08 13:43:08 -07:00

blk-softirq.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/topology.h>

2017-03-02 08:42:26 +01:00

blk-stat.c

blk-throttle: add a mechanism to estimate IO latency

2017-03-28 08:02:20 -06:00

blk-stat.h

blk-throttle: add a mechanism to estimate IO latency

2017-03-28 08:02:20 -06:00

blk-sysfs.c

blk-throttle: choose a small throtl_slice for SSD

2017-03-28 08:02:20 -06:00

blk-tag.c

blk-mq-sched: add framework for MQ capable IO schedulers

2017-01-17 10:04:20 -07:00

blk-throttle.c

blk-throttle: add latency target support

2017-03-28 08:02:20 -06:00

blk-timeout.c

block: remove REQ_NO_TIMEOUT flag

2015-12-22 09:38:34 -07:00

blk-wbt.c

blk-stat: convert to callback-based statistics reporting

2017-03-21 10:03:11 -06:00

blk-wbt.h

block: track request size in blk_issue_stat

2017-03-28 08:02:20 -06:00

blk-zoned.c

block: Rename blk_queue_zone_size and bdev_zone_size

2017-01-12 07:58:32 -07:00

blk.h

blk-throttle: add a mechanism to estimate IO latency

2017-03-28 08:02:20 -06:00

bounce.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2015-09-19 18:57:09 -07:00

bsg-lib.c

block: split scsi_request out of struct request

2017-01-27 15:08:35 -07:00

bsg.c

lib/vsprintf.c: remove %Z support

2017-02-27 18:43:47 -08:00

cfq-iosched.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>

2017-03-02 08:42:27 +01:00

cmdline-parser.c

block: remove unrelated header files and export symbol

2014-01-21 20:18:26 -08:00

compat_ioctl.c

block: Get rid of blk_get_backing_dev_info()

2017-02-02 08:21:32 -07:00

deadline-iosched.c

block: enumify ELEVATOR_*_MERGE

2017-02-08 13:43:06 -07:00

elevator.c

block: don't call ioc_exit_icq() with the queue lock held for blk-mq

2017-03-02 13:59:08 -07:00

genhd.c

block: Fix oops scsi_disk_get()

2017-03-22 20:11:37 -06:00

ioctl.c

block: Get rid of blk_get_backing_dev_info()

2017-02-02 08:21:32 -07:00

ioprio.c

sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>

2017-03-02 08:42:38 +01:00

Kconfig

blk-throttle: add configure option for new .low interface

2017-03-28 08:02:20 -06:00

Kconfig.iosched

block: get rid of blk-mq default scheduler choice Kconfig entries

2017-02-22 13:19:45 -07:00

Makefile

virtio, vhost: optimizations, fixes

2017-03-02 13:53:13 -08:00

mq-deadline.c

block: enumify ELEVATOR_*_MERGE

2017-02-08 13:43:06 -07:00

noop-iosched.c

block: move existing elevator ops to union

2017-01-17 10:03:33 -07:00

opal_proto.h

block/sed-opal: allocate struct opal_dev dynamically

2017-02-17 12:41:47 -07:00

partition-generic.c

block: Rename blk_queue_zone_size and bdev_zone_size

2017-01-12 07:58:32 -07:00

scsi_ioctl.c

block: fold cmd_type into the REQ_OP_ space

2017-01-31 14:00:44 -07:00

sed-opal.c

block/sed: Fix opal user range check and unused variables

2017-03-08 09:56:12 -07:00

t10-pi.c

block: constify struct blk_integrity_profile

2017-03-24 20:34:39 -06:00