Merge tag 'samsung-defconfig-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-block.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 8dc1811487f5212ec89665269302f19db4c497c5..9f51932bd543f68e0d18d93dfe7c1bdaa047e616 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1092,7 +1092,15 @@ struct task_struct {
        u64                             last_sum_exec_runtime;
        struct callback_head            numa_work;
 
-       struct numa_group               *numa_group;
+       /*
+        * This pointer is only modified for current in syscall and
+        * pagefault context (and for tasks being destroyed), so it can be read
+        * from any of the following contexts:
+        *  - RCU read-side critical section
+        *  - current->numa_group from everywhere
+        *  - task's runqueue locked, task not running
+        */
+       struct numa_group __rcu         *numa_group;
 
        /*
         * numa_faults is an array split into four regions: