On Tue, Nov 10, 2020 at 10:12:48AM -0800, Yang Shi wrote: > @@ -2142,6 +2151,10 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm, > int page_lru = page_is_file_lru(page); > unsigned long start = address & HPAGE_PMD_MASK; > > + if (IS_ENABLED(CONFIG_READ_ONLY_THP_FOR_FS) && > + is_shared_exec_page(vma, page)) > + goto out; Why include the IS_ENABLED() check? Once the ~50 patches I have pending go in, shared executable THPs can exist without this option. And can't we have executables on tmpfs today without this option too?
