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Diffstat (limited to 'nptl/pthread_mutex_getprioceiling.c')
-rw-r--r--nptl/pthread_mutex_getprioceiling.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/nptl/pthread_mutex_getprioceiling.c b/nptl/pthread_mutex_getprioceiling.c
index efa37b0d99..ee85949578 100644
--- a/nptl/pthread_mutex_getprioceiling.c
+++ b/nptl/pthread_mutex_getprioceiling.c
@@ -24,7 +24,9 @@
int
pthread_mutex_getprioceiling (const pthread_mutex_t *mutex, int *prioceiling)
{
- if (__builtin_expect ((mutex->__data.__kind
+ /* See concurrency notes regarding __kind in struct __pthread_mutex_s
+ in sysdeps/nptl/bits/thread-shared-types.h. */
+ if (__builtin_expect ((atomic_load_relaxed (&(mutex->__data.__kind))
& PTHREAD_MUTEX_PRIO_PROTECT_NP) == 0, 0))
return EINVAL;