[Devel] [PATCH VZ10 0/6] cgroup-v2/freezer: make container cgroups freezable

[Konstantin Khorenko]

LGTM to first 5 patches.

+ probably we need a test for this in kselftests?

--
Best regards,

Konstantin Khorenko,
Virtuozzo Linux Kernel Team

On 11/14/25 11:59, Pavel Tikhomirov wrote:
> [1-3] Port unrelated mainstream fixes for racy freezer.
> [4] Revert our hack for hang in ptrace, which does not look needed now.
> [5] Allow cgroup-v2 freezer to be frozern while ignoring kernel threads.
> [6] Support "unfreezable process" warning in cgroup-v2 freezer.
> 
> https://virtuozzo.atlassian.net/browse/VSTOR-118578
> Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
> 
> Chen Ridong (3):
>    cgroup,freezer: fix incomplete freezing when attaching tasks
>    sched,freezer: Remove unnecessary warning in __thaw_task
>    Revert "cgroup_freezer: cgroup_freezing: Check if not frozen"
> 
> Pavel Tikhomirov (3):
>    Revert "kernel/freezer: don't freeze stopped & about to be ptraced
>      task"
>    cgroup-v2/freezer: allow freezing with kthreads
>    cgroup-v2/freezer: Print information about unfreezable process
> 
>   include/linux/cgroup-defs.h    |  10 +++
>   include/linux/cgroup.h         |   3 +
>   kernel/cgroup/cgroup.c         | 120 +++++++++++++++++++++++++++++++++
>   kernel/cgroup/freezer.c        |  11 ++-
>   kernel/cgroup/legacy_freezer.c |  47 +------------
>   kernel/freezer.c               |  18 +----
>   6 files changed, 147 insertions(+), 62 deletions(-)
>