sched: _cpu_down(): Don't play with current->cpus_allowed
[linux-2.6.git] / kernel / user.c
index ec3b222..8e1c8c0 100644 (file)
@@ -16,7 +16,6 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/user_namespace.h>
-#include "cred-internals.h"
 
 struct user_namespace init_user_ns = {
        .kref = {
@@ -137,9 +136,7 @@ struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid)
        struct hlist_head *hashent = uidhashentry(ns, uid);
        struct user_struct *up, *new;
 
-       /* Make uid_hash_find() + uids_user_create() + uid_hash_insert()
-        * atomic.
-        */
+       /* Make uid_hash_find() + uid_hash_insert() atomic. */
        spin_lock_irq(&uidhash_lock);
        up = uid_hash_find(uid, hashent);
        spin_unlock_irq(&uidhash_lock);
@@ -161,11 +158,6 @@ struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid)
                spin_lock_irq(&uidhash_lock);
                up = uid_hash_find(uid, hashent);
                if (up) {
-                       /* This case is not possible when CONFIG_USER_SCHED
-                        * is defined, since we serialize alloc_uid() using
-                        * uids_mutex. Hence no need to call
-                        * sched_destroy_user() or remove_user_sysfs_dir().
-                        */
                        key_put(new->uid_keyring);
                        key_put(new->session_keyring);
                        kmem_cache_free(uid_cachep, new);