Hello Roman,
I wrote cgroups(7) text below to document the files added by you in
Linux 4.15. Could you let me know if the following text is okay please:
/sys/kernel/cgroup files
/sys/kernel/cgroup/delegate (since Linux 4.15)
This file exports a list of the cgroups v2 files (one per
line) that are delegatable (i.e., whose ownership should be
changed to the user ID of the delegatee). In the future,
the set of delegatable files may change or grow, and this
file provides a way for the kernel to inform user-space
applications of which files must be delegated. As at Linux
4.15, one sees the following when inspecting this file:
$ cat /sys/kernel/cgroup/delegate
cgroup.procs
cgroup.subtree_control
/sys/kernel/cgroup/features (since Linux 4.15)
Over time, the set of cgroups v2 features that are provided
by the kernel may change or grow, or some features may not
be enabled by default. This file provides a way for user-
space applications to discover what features the running
kernel supports or has enabled. Features are listed one
per line:
$ cat /sys/kernel/cgroup/features nsdelegate
The entries that can appear in this file are:
nsdelegate (since Linux 4.15)
The kernel supports the nsdelegate mount option.
Cheers,
Michael
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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