X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=io_u_queue.h;h=bda40d5ea263920055f6d75c62bdca8e4559034c;hp=5b6cad0ef173926f1ff0e259bac560f2a69d1d83;hb=b0f0326a9cb65b04709a9a36df49aae9806e1e9a;hpb=6a7a92156a09ff66fd3e0ea062f2cdb339ca73c5

diff --git a/io_u_queue.h b/io_u_queue.h
index 5b6cad0e..bda40d5e 100644
--- a/io_u_queue.h
+++ b/io_u_queue.h
@@ -12,8 +12,13 @@ struct io_u_queue {
 
 static inline struct io_u *io_u_qpop(struct io_u_queue *q)
 {
-	if (q->nr)
-		return q->io_us[--q->nr];
+	if (q->nr) {
+		const unsigned int next = --q->nr;
+		struct io_u *io_u = q->io_us[next];
+
+		q->io_us[next] = NULL;
+		return io_u;
+	}
 
 	return NULL;
 }
@@ -23,7 +28,7 @@ static inline void io_u_qpush(struct io_u_queue *q, struct io_u *io_u)
 	q->io_us[q->nr++] = io_u;
 }
 
-static inline int io_u_qempty(struct io_u_queue *q)
+static inline int io_u_qempty(const struct io_u_queue *q)
 {
 	return !q->nr;
 }