On Monday 07 December 2015 10:26:34 Daniel Cashman wrote: > > Ideally we'd remove the #ifdef around the mmap_rnd_compat_bits declaration > > and change this code to use > > > > if (IS_ENABLED(CONFIG_COMPAT) && test_thread_flag(TIF_32BIT)) > > > That would result in "undefined reference to mmap_rnd_compat_bits" in > the not-defined case, no? No. The compiler eliminates all code paths that it knows are unused. The IS_ENABLED() macro is designed to let the compiler figure this out. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
