Eliminate a 4 byte hole on arm64, to be able to introduce a new member
to this structure in a future patch without increasing the overall
structure size.
Before:
struct enetc_rx_swbd {
struct page * page; /* 0 8 */
enum dma_data_direction dir; /* 8 4 */
/* XXX 4 bytes hole, try to pack */
dma_addr_t dma; /* 16 8 */
u16 page_offset; /* 24 2 */
u16 len; /* 26 2 */
/* size: 32, cachelines: 1, members: 5 */
/* sum members: 24, holes: 1, sum holes: 4 */
/* padding: 4 */
/* last cacheline: 32 bytes */
};
After:
struct enetc_rx_swbd {
struct page * page; /* 0 8 */
dma_addr_t dma; /* 8 8 */
enum dma_data_direction dir; /* 16 4 */
u16 page_offset; /* 20 2 */
u16 len; /* 22 2 */
/* size: 24, cachelines: 1, members: 5 */
/* last cacheline: 24 bytes */
};
Signed-off-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>
---
drivers/net/ethernet/freescale/enetc/enetc.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
index e21d096c5a90..704aa1f9dfa3 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc.h
@@ -48,10 +48,10 @@ struct enetc_tx_swbd {
(SKB_WITH_OVERHEAD(ENETC_RXB_TRUESIZE) - XDP_PACKET_HEADROOM)
struct enetc_rx_swbd {
- dma_addr_t dma;
struct page *page;
- u16 page_offset;
+ dma_addr_t dma;
enum dma_data_direction dir;
+ u16 page_offset;
u16 len;
};
--
2.34.1
