From 73e9ffdd0cc8159f876d5e29ecf2d9c1bfca544f Mon Sep 17 00:00:00 2001 From: Richard Kennedy Date: Mon, 1 Mar 2010 10:50:20 +0100 Subject: [PATCH] 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 Signed-off-by: Jens Axboe --- block/cfq-iosched.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 0db07d7771b5..dee9d9378fee 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -78,11 +78,12 @@ struct cfq_rb_root { 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