workqueue: re-add lockdep dependencies for flushing

[linux-2.6-microblaze.git] / kernel / module.c

diff --git a/kernel/module.c b/kernel/module.c
index a6e43a5..c9bea7f 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1472,7 +1472,8 @@ static ssize_t module_sect_show(struct module_attribute *mattr,
 {
        struct module_sect_attr *sattr =
                container_of(mattr, struct module_sect_attr, mattr);
-       return sprintf(buf, "0x%pK\n", (void *)sattr->address);
+       return sprintf(buf, "0x%px\n", kptr_restrict < 2 ?
+                      (void *)sattr->address : NULL);
 }
 
 static void free_sect_attrs(struct module_sect_attrs *sect_attrs)
@@ -3516,6 +3517,11 @@ static noinline int do_init_module(struct module *mod)
         * walking this with preempt disabled.  In all the failure paths, we
         * call synchronize_sched(), but we don't want to slow down the success
         * path, so use actual RCU here.
+        * Note that module_alloc() on most architectures creates W+X page
+        * mappings which won't be cleaned up until do_free_init() runs.  Any
+        * code such as mark_rodata_ro() which depends on those mappings to
+        * be cleaned up needs to sync with the queued work - ie
+        * rcu_barrier_sched()
         */
        call_rcu_sched(&freeinit->rcu, do_free_init);
        mutex_unlock(&module_mutex);