diff options
Diffstat (limited to 'src/raw_rwlock.rs')
| -rw-r--r-- | src/raw_rwlock.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/raw_rwlock.rs b/src/raw_rwlock.rs index 75a9812..19b61c8 100644 --- a/src/raw_rwlock.rs +++ b/src/raw_rwlock.rs @@ -362,7 +362,7 @@ unsafe impl lock_api::RawRwLockUpgrade for RawRwLock { unsafe fn upgrade(&self) { let state = self.state.fetch_sub( (ONE_READER | UPGRADABLE_BIT) - WRITER_BIT, - Ordering::Relaxed, + Ordering::Acquire, ); if state & READERS_MASK != ONE_READER { let result = self.upgrade_slow(None); @@ -377,7 +377,7 @@ unsafe impl lock_api::RawRwLockUpgrade for RawRwLock { .compare_exchange_weak( ONE_READER | UPGRADABLE_BIT, WRITER_BIT, - Ordering::Relaxed, + Ordering::Acquire, Ordering::Relaxed, ) .is_ok() |