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lockref: Relax in cmpxchg loop
[firefly-linux-kernel-4.4.55.git]
/
lib
/
lockref.c
diff --git
a/lib/lockref.c
b/lib/lockref.c
index 7819c2d1d315eff9a010b989d716f1b46387ef4e..9d76f404ce9a6589e7e5b98733d7317b0ad5bb1a 100644
(file)
--- a/
lib/lockref.c
+++ b/
lib/lockref.c
@@
-19,6
+19,7
@@
if (likely(old.lock_count == prev.lock_count)) { \
SUCCESS; \
} \
+ cpu_relax(); \
} \
} while (0)