1 files changed, 9 insertions, 9 deletions

diff --git a/kernel/user.c b/kernel/user.c
index 4869563080e9..98b82507797a 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -14,20 +14,19 @@
 #include <linux/bitops.h>
 #include <linux/key.h>
 #include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/user_namespace.h>
 
 /*
  * UID task count cache, to get fast user lookup in "alloc_uid"
  * when changing user ID's (ie setuid() and friends).
  */
 
-#define UIDHASH_BITS (CONFIG_BASE_SMALL ? 3 : 8)
-#define UIDHASH_SZ              (1 << UIDHASH_BITS)
 #define UIDHASH_MASK            (UIDHASH_SZ - 1)
 #define __uidhashfn(uid)        (((uid >> UIDHASH_BITS) + uid) & UIDHASH_MASK)
-#define uidhashentry(uid)       (uidhash_table + __uidhashfn((uid)))
+#define uidhashentry(ns, uid)   ((ns)->uidhash_table + __uidhashfn((uid)))
 
 static struct kmem_cache *uid_cachep;
-static struct list_head uidhash_table[UIDHASH_SZ];
 
 /*
  * The uidhash_lock is mostly taken from process context, but it is
@@ -94,9 +93,10 @@ struct user_struct *find_user(uid_t uid)
 {
         struct user_struct *ret;
         unsigned long flags;
+        struct user_namespace *ns = current->nsproxy->user_ns;
 
         spin_lock_irqsave(&uidhash_lock, flags);
-        ret = uid_hash_find(uid, uidhashentry(uid));
+        ret = uid_hash_find(uid, uidhashentry(ns, uid));
         spin_unlock_irqrestore(&uidhash_lock, flags);
         return ret;
 }
@@ -120,9 +120,9 @@ void free_uid(struct user_struct *up)
         }
 }
 
-struct user_struct * alloc_uid(uid_t uid)
+struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
 {
-        struct list_head *hashent = uidhashentry(uid);
+        struct list_head *hashent = uidhashentry(ns, uid);
         struct user_struct *up;
 
         spin_lock_irq(&uidhash_lock);
@@ -211,11 +211,11 @@ static int __init uid_cache_init(void)
                         0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
 
         for(n = 0; n < UIDHASH_SZ; ++n)
-                INIT_LIST_HEAD(uidhash_table + n);
+                INIT_LIST_HEAD(init_user_ns.uidhash_table + n);
 
         /* Insert the root user immediately (init already runs as root) */
         spin_lock_irq(&uidhash_lock);
-        uid_hash_insert(&root_user, uidhashentry(0));
+        uid_hash_insert(&root_user, uidhashentry(&init_user_ns, 0));
         spin_unlock_irq(&uidhash_lock);
 
         return 0;