diff options
Diffstat (limited to 'include/asm-ia64/rwsem.h')
| -rw-r--r-- | include/asm-ia64/rwsem.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-ia64/rwsem.h b/include/asm-ia64/rwsem.h index e18b5ab0cb7..1327c91ea39 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 */ |