Commit 735d1af6 authored by Emilio G. Cota's avatar Emilio G. Cota Committed by Paolo Bonzini
Browse files

rcu_queue: remove barrier from QLIST_EMPTY_RCU 



It's unnecessary because the pointer isn't dereferenced.

Signed-off-by: default avatarEmilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-3-cota@braap.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent c177e0bf

include/qemu/rcu_queue.h

+1 −1
Original line number Diff line number Diff line
@@ -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))