---

yaml --- r: 37533 b: refs/heads/master c: 1fbfdfc h: refs/heads/master i: 37531: 90c3090 v: v3
git-mirror · Sep 30, 2006 · a1bbde7 · a1bbde7
1 parent 9b1181a
commit a1bbde7
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b8aca35af5e9fbc2e41a3ba1b2e66f24e80ca9b6
+refs/heads/master: 1fbfdfcddff4df188b24d9d05271a76a85064583
diff --git a/trunk/include/linux/elevator.h b/trunk/include/linux/elevator.h
@@ -166,4 +166,16 @@ enum {
 #define rq_end_sector(rq)	((rq)->sector + (rq)->nr_sectors)
 #define rb_entry_rq(node)	rb_entry((node), struct request, rb_node)
 
+/*
+ * Hack to reuse the donelist list_head as the fifo time holder while
+ * the request is in the io scheduler. Saves an unsigned long in rq.
+ */
+#define rq_fifo_time(rq)	((unsigned long) (rq)->donelist.next)
+#define rq_set_fifo_time(rq,exp)	((rq)->donelist.next = (void *) (exp))
+#define rq_entry_fifo(ptr)	list_entry((ptr), struct request, queuelist)
+#define rq_fifo_clear(rq)	do {		\
+	list_del_init(&(rq)->queuelist);	\
+	INIT_LIST_HEAD(&(rq)->donelist);	\
+	} while (0)
+
 #endif