diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/sem_post.c')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sem_post.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sem_post.c b/nptl/sysdeps/unix/sysv/linux/sem_post.c index f8bc695292..7f90325585 100644 --- a/nptl/sysdeps/unix/sysv/linux/sem_post.c +++ b/nptl/sysdeps/unix/sysv/linux/sem_post.c @@ -35,7 +35,9 @@ __new_sem_post (sem_t *sem) atomic_full_barrier (); if (isem->nwaiters > 0) { - int err = lll_futex_wake (&isem->value, 1); + int err = lll_futex_wake (&isem->value, 1, + // XYZ check mutex flag + LLL_SHARED); if (__builtin_expect (err, 0) < 0) { __set_errno (-err); @@ -55,7 +57,8 @@ __old_sem_post (sem_t *sem) int *futex = (int *) sem; int nr = atomic_increment_val (futex); - int err = lll_futex_wake (futex, 1); + /* We always have to assume it is a shared semaphore. */ + int err = lll_futex_wake (futex, 1, LLL_SHARED); if (__builtin_expect (err, 0) < 0) { __set_errno (-err); |