Messages in this thread Patch in this message | | | Subject | [PATCH] cfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds | From | Richard Kennedy <> | Date | Mon, 01 Mar 2010 09:46:05 +0000 |
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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>
--- patch against 2.6.33 compiled & tested on x86_64 AMD-X2
regards Richard
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index e3dedfd..daff53d 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -77,11 +77,12 @@ 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
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