Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 39fd64ae authored by Tejun Heo's avatar Tejun Heo
Browse files

cgroup: "cgroup.subtree_control" should be writeable by delegatee 



"cgroup.subtree_control" determines which resource types a cgroup
wants to control.  Unlike actual resource knobs, this is an attribute
which belongs to the cgroup itself instead of its parent and thus
should be writeable by the delegatee in a delegated cgroup.

Update delegation documentation accordingly.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent b6053d40

Documentation/cgroup-v2.txt

+5 −4
Original line number Original line Diff line number Diff line
@@ -309,10 +309,11 @@ file. 
2-5-1. Model of Delegation

2-5-1. Model of Delegation





A cgroup can be delegated to a less privileged user by granting write

A cgroup can be delegated to a less privileged user by granting write

access of the directory and its "cgroup.procs" file to the user.  Note

access of the directory and its "cgroup.procs" and

that resource control interface files in a given directory control the

"cgroup.subtree_control" files to the user.  Note that resource

distribution of the parent's resources and thus must not be delegated

control interface files in a given directory control the distribution

along with the directory.

of the parent's resources and thus must not be delegated along with

the directory.





Once delegated, the user can build sub-hierarchy under the directory,

Once delegated, the user can build sub-hierarchy under the directory,

organize processes as it sees fit and further distribute the resources

organize processes as it sees fit and further distribute the resources