diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt
index 2d984e20783b..c6256ae9885b 100644
--- a/Documentation/cgroups/cgroups.txt
+++ b/Documentation/cgroups/cgroups.txt
@@ -578,15 +578,6 @@ is completely unused; @cgrp->parent is still valid. (Note - can also
 be called for a newly-created cgroup if an error occurs after this
 subsystem's create() method has been called for the new cgroup).
 
-int allow_attach(struct cgroup *cgrp, struct cgroup_taskset *tset)
-(cgroup_mutex held by caller)
-
-Called prior to moving a task into a cgroup; if the subsystem
-returns an error, this will abort the attach operation.  Used
-to extend the permission checks - if all subsystems in a cgroup
-return 0, the attach will be allowed to proceed, even if the
-default permission check (root or same user) fails.
-
 int can_attach(struct cgroup *cgrp, struct cgroup_taskset *tset)
 (cgroup_mutex held by caller)
 
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 4a4eea01956c..06b77f9dd3f2 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -422,7 +422,6 @@ struct cgroup_subsys {
 	void (*css_reset)(struct cgroup_subsys_state *css);
 	void (*css_e_css_changed)(struct cgroup_subsys_state *css);
 
-	int (*allow_attach)(struct cgroup_taskset *tset);
 	int (*can_attach)(struct cgroup_taskset *tset);
 	void (*cancel_attach)(struct cgroup_taskset *tset);
 	void (*attach)(struct cgroup_taskset *tset);
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 70358b9f5a7a..cb91b44f5f78 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -528,16 +528,6 @@ static inline void pr_cont_cgroup_path(struct cgroup *cgrp)
 	pr_cont_kernfs_path(cgrp->kn);
 }
 
-/*
- * Default Android check for whether the current process is allowed to move a
- * task across cgroups, either because CAP_SYS_NICE is set or because the uid
- * of the calling process is the same as the moved task or because we are
- * running as root.
- * Returns 0 if this is allowed, or -EACCES otherwise.
- */
-int subsys_cgroup_allow_attach(struct cgroup_taskset *tset);
-
-
 #else /* !CONFIG_CGROUPS */
 
 struct cgroup_subsys_state;
@@ -562,10 +552,6 @@ static inline void cgroup_free(struct task_struct *p) {}
 static inline int cgroup_init_early(void) { return 0; }
 static inline int cgroup_init(void) { return 0; }
 
-static inline int subsys_cgroup_allow_attach(void *tset)
-{
-	return -EINVAL;
-}
 #endif /* !CONFIG_CGROUPS */
 
 #endif /* _LINUX_CGROUP_H */
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index bd541053efc2..371ee5a827e0 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2663,45 +2663,6 @@ static int cgroup_attach_task(struct cgroup *dst_cgrp,
 	return ret;
 }
 
-int subsys_cgroup_allow_attach(struct cgroup_taskset *tset)
-{
-	const struct cred *cred = current_cred(), *tcred;
-	struct task_struct *task;
-	struct cgroup_subsys_state *css;
-
-	if (capable(CAP_SYS_NICE))
-		return 0;
-
-	cgroup_taskset_for_each(task, css, tset) {
-		tcred = __task_cred(task);
-
-		if (current != task && !uid_eq(cred->euid, tcred->uid) &&
-		    !uid_eq(cred->euid, tcred->suid))
-			return -EACCES;
-	}
-
-	return 0;
-}
-
-static int cgroup_allow_attach(struct cgroup *cgrp, struct cgroup_taskset *tset)
-{
-	struct cgroup_subsys_state *css;
-	int i;
-	int ret;
-
-	for_each_css(css, i, cgrp) {
-		if (css->ss->allow_attach) {
-			ret = css->ss->allow_attach(tset);
-			if (ret)
-				return ret;
-		} else {
-			return -EACCES;
-		}
-	}
-
-	return 0;
-}
-
 static int cgroup_procs_write_permission(struct task_struct *task,
 					 struct cgroup *dst_cgrp,
 					 struct kernfs_open_file *of)
@@ -2716,24 +2677,8 @@ static int cgroup_procs_write_permission(struct task_struct *task,
 	 */
 	if (!uid_eq(cred->euid, GLOBAL_ROOT_UID) &&
 	    !uid_eq(cred->euid, tcred->uid) &&
-	    !uid_eq(cred->euid, tcred->suid)) {
-		/*
-		 * if the default permission check fails, give each
-		 * cgroup a chance to extend the permission check
-		 */
-		struct cgroup_taskset tset = {
-			.src_csets = LIST_HEAD_INIT(tset.src_csets),
-			.dst_csets = LIST_HEAD_INIT(tset.dst_csets),
-			.csets = &tset.src_csets,
-		};
-		struct css_set *cset;
-		cset = task_css_set(task);
-		list_add(&cset->mg_node, &tset.src_csets);
-		ret = cgroup_allow_attach(dst_cgrp, &tset);
-		list_del(&tset.src_csets);
-		if (ret)
-			ret = -EACCES;
-	}
+	    !uid_eq(cred->euid, tcred->suid))
+		ret = -EACCES;
 
 	if (!ret && cgroup_on_dfl(dst_cgrp)) {
 		struct super_block *sb = of->file->f_path.dentry->d_sb;
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index c90bfb620981..471094bfbcc6 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -8935,7 +8935,6 @@ struct cgroup_subsys cpu_cgrp_subsys = {
 	.fork		= cpu_cgroup_fork,
 	.can_attach	= cpu_cgroup_can_attach,
 	.attach		= cpu_cgroup_attach,
-	.allow_attach   = subsys_cgroup_allow_attach,
 	.legacy_cftypes	= cpu_files,
 	.early_init	= 1,
 };
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 5c714f33f494..ee6acd279953 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4879,11 +4879,6 @@ static int mem_cgroup_can_attach(struct cgroup_taskset *tset)
 	return ret;
 }
 
-static int mem_cgroup_allow_attach(struct cgroup_taskset *tset)
-{
-	return subsys_cgroup_allow_attach(tset);
-}
-
 static void mem_cgroup_cancel_attach(struct cgroup_taskset *tset)
 {
 	if (mc.to)
@@ -5045,10 +5040,6 @@ static int mem_cgroup_can_attach(struct cgroup_taskset *tset)
 {
 	return 0;
 }
-static int mem_cgroup_allow_attach(struct cgroup_taskset *tset)
-{
-	return 0;
-}
 static void mem_cgroup_cancel_attach(struct cgroup_taskset *tset)
 {
 }
@@ -5232,7 +5223,6 @@ struct cgroup_subsys memory_cgrp_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,
 	.dfl_cftypes = memory_files,
 	.legacy_cftypes = mem_cgroup_legacy_files,