On 04/28, Davidlohr Bueso wrote: > > @@ -29,6 +30,7 @@ void use_mm(struct mm_struct *mm) > tsk->active_mm = mm; > } > tsk->mm = mm; > + vmacache_flush(tsk); But this can't help, we need to do this in unuse_mm(). And we can race with vmacache_flush_all() which relies on mmap_sem. But perhaps WARN_ON(tsk->mm) at the start makes sense... Oleg. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>