[lttng-dev] [PATCH lttng-modules] Fix: atomic_add_unless() already returns zero on overflow

Francis Deslauriers francis.deslauriers at efficios.com
Wed Mar 8 04:36:00 UTC 2017


Signed-off-by: Francis Deslauriers <francis.deslauriers at efficios.com>
---
 wrapper/kref.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/wrapper/kref.h b/wrapper/kref.h
index eedefbf..f30a9ae 100644
--- a/wrapper/kref.h
+++ b/wrapper/kref.h
@@ -36,11 +36,7 @@
  */
 static inline int lttng_kref_get(struct kref *kref)
 {
-	if (atomic_add_unless(&kref->refcount, 1, INT_MAX) != INT_MAX) {
-		return 1;
-	} else {
-		return 0;
-	}
+	return atomic_add_unless(&kref->refcount, 1, INT_MAX);
 }
 
 #endif /* _LTTNG_WRAPPER_KREF_H */
-- 
2.7.4



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