linux-kernel - [GIT PULL] cgroup fixes for v6.0-rc2

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Date:   Tue, 23 Aug 2022 13:45:24 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: [GIT PULL] cgroup fixes for v6.0-rc2

The following changes since commit 568035b01cfb107af8d2e4bd2fb9aea22cf5b868:

  Linux 6.0-rc1 (2022-08-14 15:50:18 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git/ tags/cgroup-for-6.0-rc2-fixes

for you to fetch changes up to 763f4fb76e24959c370cdaa889b2492ba6175580:

  cgroup: Fix race condition at rebind_subsystems() (2022-08-23 08:11:06 -1000)

----------------------------------------------------------------
cgroup fixes for v6.0-rc2

Contains fixes for the following issues:

* psi data structure was changed to be allocated dynamically but it wasn't
  being cleared leading to reporting garbage values and triggering spurious
  oom kills.

* A deadlock involving cpuset and cpu hotplug.

* When a controller is moved across cgroup hierarchies, css->rstat_css_node
  didn't get RCU drained properly from the previous list.

----------------------------------------------------------------
Hao Jia (3):
      sched/psi: Zero the memory of struct psi_group
      sched/psi: Remove unused parameter nbytes of psi_trigger_create()
      sched/psi: Remove redundant cgroup_psi() when !CONFIG_CGROUPS

Jing-Ting Wu (1):
      cgroup: Fix race condition at rebind_subsystems()

Tejun Heo (1):
      cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock

 include/linux/cgroup.h |  5 ----
 include/linux/psi.h    |  2 +-
 kernel/cgroup/cgroup.c | 80 +++++++++++++++++++++++++++++++++++---------------
 kernel/cgroup/cpuset.c |  3 +-
 kernel/sched/psi.c     | 10 ++-----
 5 files changed, 61 insertions(+), 39 deletions(-)