Merge "memcg: Allow non-root users permission to control memory" (348e3a3d) · Commits · e / devices / android_kernel_sony_msm8994

mm/memcontrol.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -6941,6 +6941,23 @@ static void mem_cgroup_move_task(struct cgroup *cont,
		}
		#endif

		static int mem_cgroup_allow_attach(struct cgroup *cgrp,
		struct cgroup_taskset *tset)
		{
		const struct cred cred = current_cred(), tcred;
		struct task_struct *task;

		cgroup_taskset_for_each(task, cgrp, tset) {
		tcred = __task_cred(task);

		if ((current != task) && !capable(CAP_SYS_ADMIN) &&
		cred->euid != tcred->uid && cred->euid != tcred->suid)
		return -EACCES;
		}

		return 0;
		}

		/*
		* Cgroup retains root cgroups across [un]mount cycles making it necessary
		* to verify sane_behavior flag on each mount attempt.
		@@ -6966,6 +6983,7 @@ struct cgroup_subsys mem_cgroup_subsys = {
		.can_attach = mem_cgroup_can_attach,
		.cancel_attach = mem_cgroup_cancel_attach,
		.attach = mem_cgroup_move_task,
		.allow_attach = mem_cgroup_allow_attach,
		.bind = mem_cgroup_bind,
		.base_cftypes = mem_cgroup_files,
		.early_init = 0,