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-rw-r--r--include/asm-ia64/rwsem.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-ia64/rwsem.h b/include/asm-ia64/rwsem.h
index e18b5ab0cb75..1327c91ea39c 100644
--- a/include/asm-ia64/rwsem.h
+++ b/include/asm-ia64/rwsem.h
@@ -186,4 +186,9 @@ __downgrade_write (struct rw_semaphore *sem)
#define rwsem_atomic_add(delta, sem) atomic64_add(delta, (atomic64_t *)(&(sem)->count))
#define rwsem_atomic_update(delta, sem) atomic64_add_return(delta, (atomic64_t *)(&(sem)->count))
+static inline int rwsem_is_locked(struct rw_semaphore *sem)
+{
+ return (sem->count != 0);
+}
+
#endif /* _ASM_IA64_RWSEM_H */