Shrink task_struct if CONFIG_FUTEX=n

robust_list, compat_robust_list, pi_state_list, pi_state_cache are
really used if futexes are on.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 87f2eb27ee10..57166582a3f5 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1132,13 +1132,14 @@ struct task_struct {
         int cpuset_mems_generation;
         int cpuset_mem_spread_rotor;
 #endif
+#ifdef CONFIG_FUTEX
         struct robust_list_head __user *robust_list;
 #ifdef CONFIG_COMPAT
         struct compat_robust_list_head __user *compat_robust_list;
 #endif
         struct list_head pi_state_list;
         struct futex_pi_state *pi_state_cache;
-
+#endif
         atomic_t fs_excl;       /* holding fs exclusive resources */
         struct rcu_head rcu;