diff options
Diffstat (limited to 'include/qemu/queue.h')
| -rw-r--r-- | include/qemu/queue.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/include/qemu/queue.h b/include/qemu/queue.h index 80941506ce..f781aa20a8 100644 --- a/include/qemu/queue.h +++ b/include/qemu/queue.h @@ -197,11 +197,12 @@ struct { \ (head)->slh_first = (elm); \ } while (/*CONSTCOND*/0) -#define QSLIST_INSERT_HEAD_ATOMIC(head, elm, field) do { \ - do { \ - (elm)->field.sle_next = (head)->slh_first; \ - } while (atomic_cmpxchg(&(head)->slh_first, (elm)->field.sle_next, \ - (elm)) != (elm)->field.sle_next); \ +#define QSLIST_INSERT_HEAD_ATOMIC(head, elm, field) do { \ + typeof(elm) save_sle_next; \ + do { \ + save_sle_next = (elm)->field.sle_next = (head)->slh_first; \ + } while (atomic_cmpxchg(&(head)->slh_first, save_sle_next, (elm)) != \ + save_sle_next); \ } while (/*CONSTCOND*/0) #define QSLIST_MOVE_ATOMIC(dest, src) do { \ |