Commits
Michael Dalton committed fb51879dbce
virtio-net: use per-receive queue page frag alloc for mergeable bufs The virtio-net driver currently uses netdev_alloc_frag() for GFP_ATOMIC mergeable rx buffer allocations. This commit migrates virtio-net to use per-receive queue page frags for GFP_ATOMIC allocation. This change unifies mergeable rx buffer memory allocation, which now will use skb_refill_frag() for both atomic and GFP-WAIT buffer allocations. To address fragmentation concerns, if after buffer allocation there is too little space left in the page frag to allocate a subsequent buffer, the remaining space is added to the current allocated buffer so that the remaining space can be used to store packet data. Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael Dalton <mwdalton@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>