[PATCH rfc v2 0/5] add elevated refcnt support for page pool

[Yunsheng Lin]

This patchset adds elevated refcnt support for page pool
and enable skb's page frag recycling based on page pool
in hns3 drvier.

RFC v2:
1. Split patch 1 to more reviewable one.
2. Repurpose the lower 12 bits of the dma address to store the
   pagecnt_bias as suggested by Alexander.
3. support recycling to pool->alloc for elevated refcnt case
   too.

Yunsheng Lin (5):
  page_pool: keep pp info as long as page pool owns the page
  page_pool: add interface for getting and setting pagecnt_bias
  page_pool: add page recycling support based on elevated refcnt
  page_pool: support page frag API for page pool
  net: hns3: support skb's frag page recycling based on page pool

 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c |  79 ++++++++++-
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h |   3 +
 drivers/net/ethernet/marvell/mvneta.c           |   6 +-
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c |   2 +-
 drivers/net/ethernet/ti/cpsw.c                  |   2 +-
 drivers/net/ethernet/ti/cpsw_new.c              |   2 +-
 include/linux/skbuff.h                          |   4 +-
 include/net/page_pool.h                         |  50 +++++--
 net/core/page_pool.c                            | 172 ++++++++++++++++++++----
 9 files changed, 266 insertions(+), 54 deletions(-)

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2.7.4