From: Emilio G. Cota Date: Sun, 19 Aug 2018 09:13:26 +0000 (-0400) Subject: rcu_queue: remove barrier from QLIST_EMPTY_RCU X-Git-Tag: v3.1.0-rc0~119^2~32 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=735d1af662f50634d79699a7c0a9633c0ac08251;p=thirdparty%2Fqemu.git rcu_queue: remove barrier from QLIST_EMPTY_RCU It's unnecessary because the pointer isn't dereferenced. Signed-off-by: Emilio G. Cota Message-Id: <20180819091335.22863-3-cota@braap.org> Signed-off-by: Paolo Bonzini --- diff --git a/include/qemu/rcu_queue.h b/include/qemu/rcu_queue.h index dd7b3be043e..6881ea52747 100644 --- a/include/qemu/rcu_queue.h +++ b/include/qemu/rcu_queue.h @@ -36,7 +36,7 @@ extern "C" { /* * List access methods. */ -#define QLIST_EMPTY_RCU(head) (atomic_rcu_read(&(head)->lh_first) == NULL) +#define QLIST_EMPTY_RCU(head) (atomic_read(&(head)->lh_first) == NULL) #define QLIST_FIRST_RCU(head) (atomic_rcu_read(&(head)->lh_first)) #define QLIST_NEXT_RCU(elm, field) (atomic_rcu_read(&(elm)->field.le_next))