diff options
Diffstat (limited to 'kernel/locking/rwsem.c')
| -rw-r--r-- | kernel/locking/rwsem.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c index 2e853ad93..45ba475d4 100644 --- a/kernel/locking/rwsem.c +++ b/kernel/locking/rwsem.c @@ -22,6 +22,7 @@ void __sched down_read(struct rw_semaphore *sem) rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_); LOCK_CONTENDED(sem, __down_read_trylock, __down_read); + rwsem_set_reader_owned(sem); } EXPORT_SYMBOL(down_read); @@ -33,8 +34,10 @@ int down_read_trylock(struct rw_semaphore *sem) { int ret = __down_read_trylock(sem); - if (ret == 1) + if (ret == 1) { rwsem_acquire_read(&sem->dep_map, 0, 1, _RET_IP_); + rwsem_set_reader_owned(sem); + } return ret; } @@ -124,7 +127,7 @@ void downgrade_write(struct rw_semaphore *sem) * lockdep: a downgraded write will live on as a write * dependency. */ - rwsem_clear_owner(sem); + rwsem_set_reader_owned(sem); __downgrade_write(sem); } @@ -138,6 +141,7 @@ void down_read_nested(struct rw_semaphore *sem, int subclass) rwsem_acquire_read(&sem->dep_map, subclass, 0, _RET_IP_); LOCK_CONTENDED(sem, __down_read_trylock, __down_read); + rwsem_set_reader_owned(sem); } EXPORT_SYMBOL(down_read_nested); |