Shaohua Li fc23c57dbf blk-throttle: make sure expire time isn't too big ... [ Upstream commit 06cceedcca ] cgroup could be throttled to a limit but when all cgroups cross high limit, queue enters a higher state and so the group should be throttled to a higher limit. It's possible the cgroup is sleeping because of throttle and other cgroups don't dispatch IO any more. In this case, nobody can trigger current downgrade/upgrade logic. To fix this issue, we could either set up a timer to wakeup the cgroup if other cgroups are idle or make sure this cgroup doesn't sleep too long. Setting up a timer means we must change the timer very frequently. This patch chooses the latter. Making cgroup sleep time not too big wouldn't change cgroup bps/iops, but could make it wakeup more frequently, which isn't a big issue because throtl_slice * 8 is already quite big. Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-03-22 09:23:22 +01:00
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partitions
bio-integrity.c
bio.c	more bio_map_user_iov() leak fixes	2017-12-16 10:33:56 +01:00
blk-cgroup.c	blkcg: fix double free of new_blkg in blkcg_init_queue	2018-03-22 09:23:19 +01:00
blk-core.c
blk-exec.c
blk-flush.c
blk-integrity.c
blk-ioc.c
blk-iopoll.c
blk-lib.c
blk-map.c
blk-merge.c
blk-mq-cpu.c
blk-mq-cpumap.c
blk-mq-sysfs.c
blk-mq-tag.c
blk-mq-tag.h
blk-mq.c
blk-mq.h
blk-settings.c
blk-softirq.c
blk-sysfs.c
blk-tag.c
blk-throttle.c	blk-throttle: make sure expire time isn't too big	2018-03-22 09:23:22 +01:00
blk-timeout.c
blk.h
bounce.c
bsg-lib.c
bsg.c
cfq-iosched.c
cmdline-parser.c
compat_ioctl.c
deadline-iosched.c
elevator.c
genhd.c
ioctl.c
ioprio.c
Kconfig
Kconfig.iosched
Makefile
noop-iosched.c
partition-generic.c
scsi_ioctl.c
t10-pi.c