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From: Jesper Dangaard Brouer <jbrouer@redhat.com>
To: Jakub Kicinski <kuba@kernel.org>, Yunsheng Lin <linyunsheng@huawei.com>
Cc: brouer@redhat.com, davem@davemloft.net,
	alexander.duyck@gmail.com, linux@armlinux.org.uk,
	mw@semihalf.com, linuxarm@openeuler.org, yisen.zhuang@huawei.com,
	salil.mehta@huawei.com, thomas.petazzoni@bootlin.com,
	hawk@kernel.org, ilias.apalodimas@linaro.org, ast@kernel.org,
	daniel@iogearbox.net, john.fastabend@gmail.com,
	akpm@linux-foundation.org, peterz@infradead.org, will@kernel.org,
	willy@infradead.org, vbabka@suse.cz, fenghua.yu@intel.com,
	guro@fb.com, peterx@redhat.com, feng.tang@intel.com,
	jgg@ziepe.ca, mcroce@microsoft.com, hughd@google.com,
	jonathan.lemon@gmail.com, alobakin@pm.me, willemb@google.com,
	wenxu@ucloud.cn, cong.wang@bytedance.com, haokexin@gmail.com,
	nogikh@google.com, elver@google.com, yhs@fb.com,
	kpsingh@kernel.org, andrii@kernel.org, kafai@fb.com,
	songliubraving@fb.com, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
	chenhao288@hisilicon.com, Linux-MM <linux-mm@kvack.org>
Subject: Re: [PATCH net-next v2 0/4] add frag page support in page pool
Date: Tue, 10 Aug 2021 16:23:52 +0200	[thread overview]
Message-ID: <1eb903a5-a954-e405-6088-9b9209703f5e@redhat.com> (raw)
In-Reply-To: <20210810070159.367e680e@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>



On 10/08/2021 16.01, Jakub Kicinski wrote:
> On Fri, 6 Aug 2021 10:46:18 +0800 Yunsheng Lin wrote:
>> enable skb's page frag recycling based on page pool in
>> hns3 drvier.
> 
> Applied, thanks!

I had hoped to see more acks / reviewed-by before this got applied.
E.g. from MM-people as this patchset changes struct page and page_pool 
(that I'm marked as maintainer of).  And I would have appreciated an 
reviewed-by credit to/from Alexander as he did a lot of work in the RFC 
patchset for the split-page tricks.

p.s. I just returned from vacation today, and have not had time to 
review, sorry.

--Jesper

(relevant struct page changes for MM-people to review)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 52bbd2b..7f8ee09 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -103,11 +103,19 @@ struct page {
  			unsigned long pp_magic;
  			struct page_pool *pp;
  			unsigned long _pp_mapping_pad;
-			/**
-			 * @dma_addr: might require a 64-bit value on
-			 * 32-bit architectures.
-			 */
-			unsigned long dma_addr[2];
+			unsigned long dma_addr;
+			union {
+				/**
+				 * dma_addr_upper: might require a 64-bit
+				 * value on 32-bit architectures.
+				 */
+				unsigned long dma_addr_upper;
+				/**
+				 * For frag page support, not supported in
+				 * 32-bit architectures with 64-bit DMA.
+				 */
+				atomic_long_t pp_frag_count;
+			};
  		};
  		struct {	/* slab, slob and slub */


  reply	other threads:[~2021-08-10 14:25 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-06  2:46 Yunsheng Lin
2021-08-06  2:46 ` [PATCH net-next v2 1/4] page_pool: keep pp info as long as page pool owns the page Yunsheng Lin
2021-08-06  2:46 ` [PATCH net-next v2 2/4] page_pool: add interface to manipulate frag count in page pool Yunsheng Lin
2021-08-10 14:58   ` Jesper Dangaard Brouer
2021-08-11  0:48     ` Yunsheng Lin
2021-08-12 15:17   ` Jesper Dangaard Brouer
2021-08-06  2:46 ` [PATCH net-next v2 3/4] page_pool: add frag page recycling support " Yunsheng Lin
2021-08-06  2:46 ` [PATCH net-next v2 4/4] net: hns3: support skb's frag page recycling based on " Yunsheng Lin
2021-09-08  8:31   ` moyufeng
2021-09-08 15:08     ` Jakub Kicinski
2021-09-08 15:26       ` Ilias Apalodimas
2021-09-08 15:57         ` Jakub Kicinski
2021-09-08 16:47           ` Jesper Dangaard Brouer
2021-09-08 16:51           ` Ilias Apalodimas
2021-08-10 14:01 ` [PATCH net-next v2 0/4] add frag page support in " Jakub Kicinski
2021-08-10 14:23   ` Jesper Dangaard Brouer [this message]
2021-08-10 14:43     ` Jakub Kicinski
2021-08-10 15:09       ` Alexander Duyck
2021-08-11  1:06         ` [Linuxarm] " Yunsheng Lin

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