netdev - [PATCH v3 21/26] mm: Remove page pool members from struct page

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Message-Id: <20230111042214.907030-22-willy@infradead.org>
Date:   Wed, 11 Jan 2023 04:22:09 +0000
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     Jesper Dangaard Brouer <hawk@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        netdev@...r.kernel.org, linux-mm@...ck.org,
        Shakeel Butt <shakeelb@...gle.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>
Subject: [PATCH v3 21/26] mm: Remove page pool members from struct page

These are now split out into their own netmem struct.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Acked-by: Jesper Dangaard Brouer <brouer@...hat.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@...aro.org>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
---
 include/linux/mm_types.h | 22 ----------------------
 include/net/page_pool.h  |  4 ----
 2 files changed, 26 deletions(-)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 65b912ba97ef..de545f6cca3c 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -116,28 +116,6 @@ struct page {
 			 */
 			unsigned long private;
 		};
-		struct {	/* page_pool used by netstack */
-			/**
-			 * @pp_magic: magic value to avoid recycling non
-			 * page_pool allocated pages.
-			 */
-			unsigned long pp_magic;
-			struct page_pool *pp;
-			unsigned long _pp_mapping_pad;
-			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 {	/* Tail pages of compound page */
 			unsigned long compound_head;	/* Bit zero is set */
 
diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index 5e5030f5bbb4..2f0cd018b8f2 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -86,11 +86,7 @@ struct netmem {
 	static_assert(offsetof(struct page, pg) == offsetof(struct netmem, nm))
 NETMEM_MATCH(flags, flags);
 NETMEM_MATCH(lru, pp_magic);
-NETMEM_MATCH(pp, pp);
 NETMEM_MATCH(mapping, _pp_mapping_pad);
-NETMEM_MATCH(dma_addr, dma_addr);
-NETMEM_MATCH(dma_addr_upper, dma_addr_upper);
-NETMEM_MATCH(pp_frag_count, pp_frag_count);
 NETMEM_MATCH(_mapcount, _mapcount);
 NETMEM_MATCH(_refcount, _refcount);
 #undef NETMEM_MATCH
-- 
2.35.1