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>
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 52112d3..15efec0 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -570,13 +570,13 @@
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;
