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authorTejun Heo <tj@kernel.org>2013-05-14 22:52:38 +0200
committerTejun Heo <tj@kernel.org>2013-05-14 22:52:38 +0200
commit9138125beabbb76b4a373d4a619870f6f5d86fc5 (patch)
tree61ccabf042ff21b81c6dcd074ea8edeb77fedfa8 /fs
parentblk-throttle: implement throtl_grp->has_rules[] (diff)
downloadlinux-9138125beabbb76b4a373d4a619870f6f5d86fc5.tar.xz
linux-9138125beabbb76b4a373d4a619870f6f5d86fc5.zip
blk-throttle: implement proper hierarchy support
With the recent updates, blk-throttle is finally ready for proper hierarchy support. Dispatching now honors service_queue->parent_sq and propagates correctly. The only thing missing is setting ->parent_sq correctly so that throtl_grp hierarchy matches the cgroup hierarchy. This patch updates throtl_pd_init() such that service_queues form the same hierarchy as the cgroup hierarchy if sane_behavior is enabled. As this concludes proper hierarchy support for blkcg, the shameful .broken_hierarchy tag is removed from blkio_subsys. v2: Updated blkio-controller.txt as suggested by Vivek. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: Li Zefan <lizefan@huawei.com>
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