tree d9b2a71f0af7180f5f5fcb7f6a17bf93bf67a3bc
parent 2ee52ad4962b32797bac33fa29ec8159e64c4ee3
author Alexander Duyck <alexander.h.duyck@redhat.com> 1430971911 -0700
committer David S. Miller <davem@davemloft.net> 1431441566 -0400

net: Store virtual address instead of page in netdev_alloc_cache

This change makes it so that we store the virtual address of the page
in the netdev_alloc_cache instead of the page pointer.  The idea behind
this is to avoid multiple calls to page_address since the virtual address
is required for every access, but the page pointer is only needed at
allocation or reset of the page.

While I was at it I also reordered the netdev_alloc_cache structure a bit
so that the size is always 16 bytes by dropping size in the case where
PAGE_SIZE is greater than or equal to 32KB.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>