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Xunlei Pang 71b996c9b8 blk-cgroup: Fix the recursive blkg rwstat 
[ Upstream commit 4f44657d74873735e93a50eb25014721a66aac19 ]

The current blkio.throttle.io_service_bytes_recursive doesn't
work correctly.

As an example, for the following blkcg hierarchy:
 (Made 1GB READ in test1, 512MB READ in test2)
     test
    /    \
 test1   test2

$ head -n 1 test/test1/blkio.throttle.io_service_bytes_recursive
8:0 Read 1073684480
$ head -n 1 test/test2/blkio.throttle.io_service_bytes_recursive
8:0 Read 537448448
$ head -n 1 test/blkio.throttle.io_service_bytes_recursive
8:0 Read 537448448

Clearly, above data of "test" reflects "test2" not "test1"+"test2".

Do the correct summary in blkg_rwstat_recursive_sum().

Signed-off-by: Xunlei Pang <xlpang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-30 14:31:48 +02:00
..
partitions
block-5.10-2020-10-12
2020-10-13 12:12:44 -07:00
badblocks.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
bfq-cgroup.c
bfq: fix blkio cgroup leakage v4
2020-08-18 07:48:08 -07:00
bfq-iosched.c
bfq: Avoid false bfq queue merging
2021-03-04 11:37:18 +01:00
bfq-iosched.h
bfq: fix blkio cgroup leakage v4
2020-08-18 07:48:08 -07:00
bfq-wf2q.c
bfq: fix blkio cgroup leakage v4
2020-08-18 07:48:08 -07:00
bio-integrity.c
block: make function __bio_integrity_free() static
2020-07-02 12:38:18 -06:00
bio.c
block: advance iov_iter on bio_add_hw_page failure
2020-10-28 07:51:02 -06:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-30 14:31:48 +02:00
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
blk-cgroup: Use cond_resched() when destroy blkgs
2021-02-13 13:55:13 +01:00
blk-core.c
scsi: block: Do not accept any requests while suspended
2021-01-12 20:18:17 +01:00
blk-crypto-fallback.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -06:00
blk-crypto-internal.h
block: make blk_crypto_rq_bio_prep() able to fail
2020-10-05 10:47:43 -06:00
blk-crypto.c
block: warn if !__GFP_DIRECT_RECLAIM in bio_crypt_set_ctx()
2020-10-05 10:47:43 -06:00
blk-exec.c
block: add a blk_account_io_merge_bio helper
2020-05-27 05:21:23 -06:00
blk-flush.c
block: mark flush request as IDLE when it is really finished
2020-11-13 14:24:16 -07:00
blk-integrity.c
block: remove the unused blk_integrity_merge_bio export
2020-10-06 07:29:53 -06:00
blk-ioc.c
block: remove retry loop in ioc_release_fn()
2020-07-16 10:22:15 -06:00
blk-iocost.c
blk-iocost: fix NULL iocg deref from racing against initialization
2021-01-12 20:18:23 +01:00
blk-iolatency.c
block: Remove redundant 'return' statement
2020-10-08 07:59:48 -06:00
blk-lib.c
block: add a bdev_is_partition helper
2020-09-25 08:18:57 -06:00
blk-map.c
block: fix bmd->is_null_mapped initialization
2020-09-23 09:18:39 -06:00
blk-merge.c
dm: fix IO splitting
2020-12-04 14:53:15 -05:00
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-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED
2021-01-19 18:27:29 +01:00
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: get rid of the dead flush handle code path
2020-10-09 12:35:39 -06:00
blk-mq-sched.h
block-5.10-2020-10-12
2020-10-13 12:12:44 -07:00
blk-mq-sysfs.c
blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
2020-10-09 12:46:28 -06:00
blk-mq-tag.c
block-mq: fix comments in blk_mq_queue_tag_busy_iter
2020-09-29 08:11:00 -06:00
blk-mq-tag.h
blk-mq: Relocate hctx_may_queue()
2020-09-03 15:20:47 -06:00
blk-mq-virtio.c
blk-mq: Fix typo in comment
2020-03-17 20:55:21 +01:00
blk-mq.c
scsi: block: Remove RQF_PREEMPT and BLK_MQ_REQ_PREEMPT
2021-01-12 20:18:17 +01:00
blk-mq.h
blk-mq: test QUEUE_FLAG_HCTX_ACTIVE for sbitmap_shared in hctx_may_queue
2021-02-03 23:28:44 +01:00
blk-pm.c
scsi: block: Fix a race in the runtime power management code
2021-01-06 14:56:50 +01:00
blk-pm.h
scsi: block: Do not accept any requests while suspended
2021-01-12 20:18:17 +01:00
blk-rq-qos.c
Revert "blk-rq-qos: remove redundant finish_wait to rq_qos_wait."
2020-07-15 09:33:37 -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
blk-settings: align max_sectors on "logical_block_size" boundary
2021-03-04 11:38:22 +01:00
blk-stat.c
blk-stat: make q->stats->lock irqsafe
2020-09-01 16:48:46 -06:00
blk-stat.h
block: deactivate blk_stat timer in wbt_disable_default()
2018-12-12 06:47:51 -07:00
blk-sysfs.c
blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
2020-10-09 12:46:28 -06:00
blk-throttle.c
blk-throttle: Re-use the throtl_set_slice_end()
2020-10-08 08:01:38 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
blk-wbt.h
blk-wbt: remove wbt_update_limits
2020-05-29 16:30:39 -06:00
blk-zoned.c
block: Discard page cache of zone reset target range
2021-03-17 17:06:27 +01:00
blk.h
block: move blk_mq_sched_try_merge to blk-merge.c
2020-10-06 07:29:53 -06:00
bounce.c
block: make bio_crypt_clone() able to fail
2020-10-05 10:47:43 -06:00
bsg-lib.c
block: drop double zeroing
2020-09-23 09:18:13 -06:00
bsg.c
bsg: free the request before return error code
2021-03-04 11:37:42 +01:00
cmdline-parser.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
elevator.c
block: fix comment and add lockdep assert
2020-10-09 12:34:06 -06:00
genhd.c
block: fix use-after-free in disk_part_iter_next
2021-01-17 14:17:05 +01:00
ioctl.c
block: reopen the device in blkdev_reread_part
2021-03-04 11:38:21 +01:00
ioprio.c
block: grant IOPRIO_CLASS_RT to CAP_SYS_NICE
2020-09-01 19:38:33 -06:00
Kconfig
blk-wbt: Remove obsolete multiqueue I/O scheduling comment
2020-09-01 16:49:26 -06:00
Kconfig.iosched
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
keyslot-manager.c
block/keyslot-manager: prevent crash when num_slots=1
2020-11-20 11:52:52 -07:00
kyber-iosched.c
blk-mq: Use pointers for blk_mq_tags bitmap tags
2020-09-03 15:20:47 -06:00
Makefile
blk-mq: merge blk-softirq.c into blk-mq.c
2020-06-24 09:15:56 -06:00
mq-deadline.c
blk-mq, elevator: Count requests per hctx to improve performance
2020-09-03 15:20:47 -06:00
opal_proto.h
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
scsi_ioctl.c
drivers-5.10-2020-10-12
2020-10-13 13:04:41 -07:00
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: Allow t10-pi to be modular
2020-01-06 20:59:04 -07:00