Branch and cache miss speedups
Just some low hanging fruit.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/ioengine.h b/ioengine.h
index abf2b46..7e0707b 100644
--- a/ioengine.h
+++ b/ioengine.h
@@ -73,6 +73,25 @@
struct io_piece *ipo;
+ unsigned int resid;
+ unsigned int error;
+
+ /*
+ * io engine private data
+ */
+ union {
+ unsigned int index;
+ unsigned int seen;
+ void *engine_data;
+ };
+
+ struct flist_head verify_list;
+
+ /*
+ * Callback for io completion
+ */
+ int (*end_io)(struct thread_data *, struct io_u *);
+
union {
#ifdef CONFIG_LIBAIO
struct iocb iocb;
@@ -97,25 +116,6 @@
#endif
void *mmap_data;
};
-
- unsigned int resid;
- unsigned int error;
-
- /*
- * io engine private data
- */
- union {
- unsigned int index;
- unsigned int seen;
- void *engine_data;
- };
-
- struct flist_head verify_list;
-
- /*
- * Callback for io completion
- */
- int (*end_io)(struct thread_data *, struct io_u *);
};
/*