cfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds
Reorder cfq_rb_root to remove 8 bytes of padding on 64 bit builds.
Consequently removing 56 bytes from cfq_group and 64 bytes from
cfq_data.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 0db07d7..dee9d93 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -78,11 +78,12 @@
struct rb_root rb;
struct rb_node *left;
unsigned count;
+ unsigned total_weight;
u64 min_vdisktime;
struct rb_node *active;
- unsigned total_weight;
};
-#define CFQ_RB_ROOT (struct cfq_rb_root) { RB_ROOT, NULL, 0, 0, }
+#define CFQ_RB_ROOT (struct cfq_rb_root) { .rb = RB_ROOT, .left = NULL, \
+ .count = 0, .min_vdisktime = 0, }
/*
* Per process-grouping structure