cgroup: warn if "xattr" is specified with "sane_behavior"
Mount option "xattr" is no longer necessary as it's enabled by default
on kernfs. Warn if "xattr" is specified with "sane_behavior" so that
the option can be removed in the future.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index cda614d..a0fab71 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1267,6 +1267,9 @@
pr_err("cgroup: sane_behavior: clone_children is not allowed\n");
return -EINVAL;
}
+
+ if (opts->flags & CGRP_ROOT_XATTR)
+ pr_warning("cgroup: sane_behavior: xattr is always available, flag unnecessary\n");
}
/*