i40e: optimise prefetch page refcount

refcount of rx_buffer page will be added here originally, so prefetchw
is needed, but after commit 1793668c3b8c ("i40e/i40evf: Update code to
better handle incrementing page count"), and refcount is not added
every time, so change prefetchw as prefetch.

Now it mainly services page_address(), but which accesses struct page
only when WANT_PAGE_VIRTUAL or HASHED_PAGE_VIRTUAL is defined otherwise
it returns address based on offset, so we prefetch it conditionally.

Jakub suggested to define prefetch_page_address in a common header.

Reported-by: kernel test robot <[email protected]>
Suggested-by: Jakub Kicinski <[email protected]>
Signed-off-by: Li RongQing <[email protected]>
Reviewed-by: Jesse Brandeburg <[email protected]>
Tested-by: Aaron Brown <[email protected]>
Signed-off-by: Tony Nguyen <[email protected]>

0 files changed, 0 insertions, 0 deletions