Documentation/admin-guide/cgroup-v2.rst

749   Flat keyed
755   Nested keyed
765 For both flat and nested keyed files, only the values for a single key
766 can be written at a time.  For nested keyed files, the sub key pairs
799 - If a setting has a configurable default value and keyed specific
800   overrides, the default entry should be keyed with "default" and
810   For example, a setting which is keyed by major:minor device numbers
943 	A read-only flat-keyed file which exists on non-root cgroups.
969 	A read-only flat-keyed file with the following entries:
1053 	A read-write nested-keyed file.
1095 	A read-only flat-keyed file.
1153 	A read-write nested-keyed file.
1314 	A write-only nested-keyed file which exists for all cgroups.
1374 	A read-only flat-keyed file which exists on non-root cgroups.
1424 	A read-only flat-keyed file which exists on non-root cgroups.
1659 	A read-only nested-keyed file which exists on non-root cgroups.
1724 	A read-only flat-keyed file which exists on non-root cgroups.
1782 	A read-only nested-keyed file.
1845 	A read-only nested-keyed file.
1847 	Lines are keyed by $MAJ:$MIN device numbers and not ordered.
1865 	A read-write nested-keyed file which exists only on the root
1871 	are keyed by $MAJ:$MIN device numbers and not ordered.  The
1920 	A read-write nested-keyed file which exists only on the root
1925 	implements "io.weight" proportional control.  Lines are keyed
1962 	A read-write flat-keyed file which exists on non-root cgroups.
1966 	without specific override.  The rest are overrides keyed by
1982 	A read-write nested-keyed file which exists on non-root
1985 	BPS and IOPS based IO limit.  Lines are keyed by $MAJ:$MIN
2021 	A read-only nested-keyed file.
2266 	A read-only flat-keyed file which exists on non-root cgroups. Unless
2595 	A readwrite nested-keyed file that exists for all the cgroups
2599 	Lines are keyed by device name and are not ordered.
2642 	A read-only flat-keyed file which exists on non-root cgroups.
2680         A read-only flat-keyed file shown only in the root cgroup.  It shows
2689         A read-only flat-keyed file shown in the all cgroups.  It shows
2697         A read-only flat-keyed file shown in all cgroups.  It shows the
2706         A read-write flat-keyed file shown in the non root cgroups. Allowed
2725 	A read-only flat-keyed file which exists on non-root cgroups. The