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Subject[PATCH] clone.2: Document CLONE_INTO_CGROUP
Date
From: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
man2/clone.2 | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/man2/clone.2 b/man2/clone.2
index 39cec4c86..8d9aa9f99 100644
--- a/man2/clone.2
+++ b/man2/clone.2
@@ -197,6 +197,7 @@ struct clone_args {
u64 tls; /* Location of new TLS */
u64 set_tid; /* Pointer to a \fIpid_t\fP array */
u64 set_tid_size; /* Number of elements in \fIset_tid\fP */
+ u64 cgroup; /* Target cgroup file descriptor for the child process */
};
.EE
.in
@@ -448,6 +449,25 @@ Specifying this flag together with
.B CLONE_SIGHAND
is nonsensical and disallowed.
.TP
+.BR CLONE_INTO_CGROUP " (since Linux 5.7)"
+.\" commit ef2c41cf38a7559bbf91af42d5b6a4429db8fc68
+By default, the child process will belong to the same cgroup as its parent.
+If this flag is specified the child process will be created in a
+different cgroup than its parent.
+
+When using
+.RB clone3 ()
+the target cgroup can be specified by setting the
+.I cl_args.cgroup
+member to the file descriptor of the target cgroup. The cgroup file
+descriptor must refer to a cgroup in a cgroup v2 hierarchy
+(see
+.BR cgroup (2)).
+
+Note that all usual cgroup v2 process migration restrictions apply. See
+.BR cgroup (2)
+for detailed information.
+.TP
.BR CLONE_DETACHED " (historical)"
For a while (during the Linux 2.5 development series)
.\" added in 2.5.32; removed in 2.6.0-test4
base-commit: ff5de6ecc4338f4b62c3459c99bd1a3a75ee2808
--
2.26.0

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