diff options
| -rw-r--r-- | kernel/cpuset.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 18aea1bd1284..2523a4b6a8c6 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -616,12 +616,10 @@ static void guarantee_online_mems(const struct cpuset *cs, nodemask_t *pmask) * current->cpuset if a task has its memory placement changed. * Do not call this routine if in_interrupt(). * - * Call without callback_mutex or task_lock() held. May be called - * with or without manage_mutex held. Doesn't need task_lock to guard - * against another task changing a non-NULL cpuset pointer to NULL, - * as that is only done by a task on itself, and if the current task - * is here, it is not simultaneously in the exit code NULL'ing its - * cpuset pointer. This routine also might acquire callback_mutex and + * Call without callback_mutex or task_lock() held. May be + * called with or without manage_mutex held. Thanks in part to + * 'the_top_cpuset_hack', the tasks cpuset pointer will never + * be NULL. This routine also might acquire callback_mutex and * current->mm->mmap_sem during call. * * Reading current->cpuset->mems_generation doesn't need task_lock |