mirror-linux/kernel/cgroup
Tejun Heo 8e4ec90701 freezer: Clarify that only cgroup1 freezer uses PM freezer
cgroup1 freezer piggybacks on the PM freezer, which inadvertently allowed
userspace to produce uninterruptible tasks at will. To avoid the issue,
cgroup2 freezer switched to a separate job control based mechanism. While
this happened a long time ago, the code and comment haven't been updated
making it confusing to people who aren't familiar with the history.

Rename cgroup_freezing() to cgroup1_freezing() and update comments on top of
freezing() and frozen() to clarify that cgroup2 freezer isn't covered by the
PM freezer mechanism.

Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Qu Wenruo <wqu@suse.com>
Link: https://patch.msgid.link/aPZ3q6Hm865NicBC@slm.duckdns.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2025-10-30 20:10:27 +01:00
..
Makefile kernel/cgroup: Add "dmem" memory accounting cgroup 2025-01-06 17:24:38 +01:00
cgroup-internal.h cgroup: replace global percpu_rwsem with per threadgroup resem when writing to cgroup.procs 2025-09-10 07:44:51 -10:00
cgroup-v1.c cgroup: replace global percpu_rwsem with per threadgroup resem when writing to cgroup.procs 2025-09-10 07:44:51 -10:00
cgroup.c bpf-next-6.18 2025-09-30 17:58:11 -07:00
cpuset-internal.h cpuset: add helpers for cpus read and cpuset_mutex locks 2025-08-25 08:20:22 -10:00
cpuset-v1.c cpuset: add helpers for cpus read and cpuset_mutex locks 2025-08-25 08:20:22 -10:00
cpuset.c cpuset: remove is_prs_invalid helper 2025-09-22 12:57:46 -10:00
debug.c cgroup: Remove redundant rcu_read_lock/unlock() in spin_lock 2025-09-16 08:36:14 -10:00
dmem.c rculist: move list_for_each_rcu() to where it belongs 2025-08-25 10:13:26 -07:00
freezer.c cgroup: cgroup.stat.local time accounting 2025-08-22 07:50:43 -10:00
legacy_freezer.c freezer: Clarify that only cgroup1 freezer uses PM freezer 2025-10-30 20:10:27 +01:00
misc.c Merge branch 'kvm-tdx-initial' into HEAD 2025-04-07 07:36:33 -04:00
namespace.c namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
pids.c cgroup/pids: Remove unreachable paths of pids_{can,cancel}_fork 2024-08-05 10:32:16 -10:00
rdma.c
rstat.c cgroup: avoid null de-ref in css_rstat_exit() 2025-08-09 08:46:32 -10:00