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

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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>
This commit is contained in:
Richard Kennedy 2010-09-10 12:19:43 +01:00 committed by Jeff Garzik
parent 02e0a60477
commit b34e90429c
1 changed files with 3 additions and 3 deletions
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6
include/linux/libata.h
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@ -570,13 +570,13 @@ struct ata_queued_cmd {
unsigned int extrabytes; unsigned int extrabytes;
unsigned int curbytes; unsigned int curbytes;
struct scatterlist *cursg;
unsigned int cursg_ofs;
struct scatterlist sgent; struct scatterlist sgent;
struct scatterlist *sg; struct scatterlist *sg;
struct scatterlist *cursg;
unsigned int cursg_ofs;
unsigned int err_mask; unsigned int err_mask;
struct ata_taskfile result_tf; struct ata_taskfile result_tf;
ata_qc_cb_t complete_fn; ata_qc_cb_t complete_fn;