diff options
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/rwsem.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h index 597e7e96b59e..fda9481dec5c 100644 --- a/arch/s390/include/asm/rwsem.h +++ b/arch/s390/include/asm/rwsem.h @@ -49,7 +49,7 @@ /* * lock for reading */ -static inline void __down_read(struct rw_semaphore *sem) +static inline int ___down_read(struct rw_semaphore *sem) { signed long old, new; @@ -62,10 +62,25 @@ static inline void __down_read(struct rw_semaphore *sem) : "=&d" (old), "=&d" (new), "=Q" (sem->count) : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS) : "cc", "memory"); - if (old < 0) + return (old < 0); +} + +static inline void __down_read(struct rw_semaphore *sem) +{ + if (___down_read(sem)) rwsem_down_read_failed(sem); } +static inline int __down_read_killable(struct rw_semaphore *sem) +{ + if (___down_read(sem)) { + if (IS_ERR(rwsem_down_read_failed_killable(sem))) + return -EINTR; + } + + return 0; +} + /* * trylock for reading -- returns 1 if successful, 0 if contention */ |