locking: remove unused double_spin_lock()

double_spin_lock() has no callers, and it can't be used without additional
lockdep annotations, remove it.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 1129ee0..d311a09 100644 (file)
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -296,43 +296,6 @@ do {                                               \
 })
 
 /*
- * Locks two spinlocks l1 and l2.
- * l1_first indicates if spinlock l1 should be taken first.
- */
-static inline void double_spin_lock(spinlock_t *l1, spinlock_t *l2,
-                                   bool l1_first)
-       __acquires(l1)
-       __acquires(l2)
-{
-       if (l1_first) {
-               spin_lock(l1);
-               spin_lock(l2);
-       } else {
-               spin_lock(l2);
-               spin_lock(l1);
-       }
-}
-
-/*
- * Unlocks two spinlocks l1 and l2.
- * l1_taken_first indicates if spinlock l1 was taken first and therefore
- * should be released after spinlock l2.
- */
-static inline void double_spin_unlock(spinlock_t *l1, spinlock_t *l2,
-                                     bool l1_taken_first)
-       __releases(l1)
-       __releases(l2)
-{
-       if (l1_taken_first) {
-               spin_unlock(l2);
-               spin_unlock(l1);
-       } else {
-               spin_unlock(l1);
-               spin_unlock(l2);
-       }
-}
-
-/*
  * Pull the atomic_t declaration:
  * (asm-mips/atomic.h needs above definitions)
  */