mm: rcu-protected get_mm_exe_file()

[linux-2.6-block.git] / lib / lockref.c

diff --git a/lib/lockref.c b/lib/lockref.c
index ecb9a665ec19b5c8b6e062568dffb0c4c0b12d90..494994bf17c8ec9764cbb784cbd88840fa0919c9 100644 (file)
--- a/lib/lockref.c
+++ b/lib/lockref.c
@@ -18,7 +18,7 @@
 #define CMPXCHG_LOOP(CODE, SUCCESS) do {                                       \
        struct lockref old;                                                     \
        BUILD_BUG_ON(sizeof(old) != 8);                                         \
-       old.lock_count = ACCESS_ONCE(lockref->lock_count);                      \
+       old.lock_count = READ_ONCE(lockref->lock_count);                        \
        while (likely(arch_spin_value_unlocked(old.lock.rlock.raw_lock))) {     \
                struct lockref new = old, prev = old;                           \
                CODE                                                            \