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From: Kevin Hao <>
To: "David S . Miller" <>,
	Jakub Kicinski <>,
	Andrew Morton <>
Subject: [PATCH net-next v2 0/4] net: Avoid the memory waste in some Ethernet drivers
Date: Sun, 31 Jan 2021 15:44:22 +0800	[thread overview]
Message-ID: <> (raw)


  - Inline page_frag_alloc() and {netdev,napi}_alloc_frag()
  - Adopt Vlastimil's suggestion and add his Acked-by

In the current implementation of napi_alloc_frag(), it doesn't have any
align guarantee for the returned buffer address. We would have to use
some ugly workarounds to make sure that we can get a align buffer
address for some Ethernet drivers. This patch series tries to introduce
some helper functions to make sure that an align buffer is returned.
Then we can drop the ugly workarounds and avoid the unnecessary memory

Kevin Hao (4):
  mm: page_frag: Introduce page_frag_alloc_align()
  net: Introduce {netdev,napi}_alloc_frag_align()
  net: octeontx2: Use napi_alloc_frag_align() to avoid the memory waste
  net: dpaa2: Use napi_alloc_frag_align() to avoid the memory waste

 .../net/ethernet/freescale/dpaa2/dpaa2-eth.c  |  3 +--
 .../marvell/octeontx2/nic/otx2_common.c       |  3 +--
 include/linux/gfp.h                           | 12 +++++++--
 include/linux/skbuff.h                        | 22 ++++++++++++++--
 mm/page_alloc.c                               |  8 +++---
 net/core/skbuff.c                             | 25 +++++++------------
 6 files changed, 46 insertions(+), 27 deletions(-)


             reply	other threads:[~2021-01-31  7:54 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-31  7:44 Kevin Hao [this message]
2021-01-31  7:44 ` [PATCH net-next v2 1/4] mm: page_frag: Introduce page_frag_alloc_align() Kevin Hao
2021-02-02 11:36   ` Ioana Ciornei
2021-02-02 11:48     ` Vlastimil Babka
2021-02-02 12:31       ` Ioana Ciornei
2021-02-02 16:19   ` Alexander Duyck
2021-02-04  6:40     ` Kevin Hao

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