[GIT PULL] cgroup fixes for v4.3-rc2

Hello, Linus. Another cgroup fix pull. The cgroup writeback support got inadvertently enabled for traditional hierarchies revealing two regressions which are currently being worked on. It shouldn't have been enabled on traditional hierarchies, so disable it on them. This is enough for making

[GIT PULL] cgroup fixes for v4.3-rc2

Hello, Linus. Another cgroup fix pull. The cgroup writeback support got inadvertently enabled for traditional hierarchies revealing two regressions which are currently being worked on. It shouldn't have been enabled on traditional hierarchies, so disable it on them. This is enough for making

[GIT PULL] cgroup fixes for v4.3-rc2

Hello, Linus. The threadgroup locking changes which went in during 4.2 devel cycle added write locking of a percpu_rwsem in cgroup task migration path; unfortunately, that involved expedited rcu syncing which turned out to be too slow and heavy for certain workloads. The patchset which is

[GIT PULL] cgroup fixes for v4.3-rc2

Hello, Linus. The threadgroup locking changes which went in during 4.2 devel cycle added write locking of a percpu_rwsem in cgroup task migration path; unfortunately, that involved expedited rcu syncing which turned out to be too slow and heavy for certain workloads. The patchset which is