libata: reorder ata_queued_cmd to remove alignment padding on 64 bit builds

Reorder structure ata_queued_cmd to remove 8 bytes of alignment padding
on 64 bit builds & therefore reduce the size of structure ata_port by
256 bytes.

Overall this will have little impact, other than reducing the amount of
memory that is cleared when allocating ata_ports.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 52112d39d71e..15efec05df67 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -570,13 +570,13 @@ struct ata_queued_cmd {
         unsigned int            extrabytes;
         unsigned int            curbytes;
 
-        struct scatterlist      *cursg;
-        unsigned int            cursg_ofs;
-
         struct scatterlist      sgent;
 
         struct scatterlist      *sg;
 
+        struct scatterlist      *cursg;
+        unsigned int            cursg_ofs;
+
         unsigned int            err_mask;
         struct ata_taskfile     result_tf;
         ata_qc_cb_t             complete_fn;