[Qemu-devel] [PATCH] rfifolock: no need to get thread identifier when nesting

[Changlong Xie]

Signed-off-by: Changlong Xie <address@hidden>
---
 util/rfifolock.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/util/rfifolock.c b/util/rfifolock.c
index c22f5fe..f406cc1 100644
--- a/util/rfifolock.c
+++ b/util/rfifolock.c
@@ -50,6 +50,7 @@ void rfifolock_lock(RFifoLock *r)
 
     if (r->nesting > 0 && qemu_thread_is_self(&r->owner_thread)) {
         r->tail--; /* put ticket back, we're nesting */
+        goto out;
     } else {
         while (ticket != r->head) {
             /* Invoke optional contention callback */
@@ -61,6 +62,7 @@ void rfifolock_lock(RFifoLock *r)
     }
 
     qemu_thread_get_self(&r->owner_thread);
+out:
     r->nesting++;
     qemu_mutex_unlock(&r->lock);
 }
-- 
1.9.3