netdev - [PATCH 09/24] page_pool: Convert page_pool_defrag_page() to page_pool_defrag

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Date:   Wed, 30 Nov 2022 22:07:48 +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
Subject: [PATCH 09/24] page_pool: Convert page_pool_defrag_page() to page_pool_defrag_netmem()

Add a page_pool_defrag_page() wrapper.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 include/net/page_pool.h | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index 88eb5be77b2c..bfb77b75f333 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -371,7 +371,7 @@ static inline void page_pool_fragment_page(struct page *page, long nr)
 	atomic_long_set(&page->pp_frag_count, nr);
 }
 
-static inline long page_pool_defrag_page(struct page *page, long nr)
+static inline long page_pool_defrag_netmem(struct netmem *nmem, long nr)
 {
 	long ret;
 
@@ -384,14 +384,19 @@ static inline long page_pool_defrag_page(struct page *page, long nr)
 	 * especially when dealing with a page that may be partitioned
 	 * into only 2 or 3 pieces.
 	 */
-	if (atomic_long_read(&page->pp_frag_count) == nr)
+	if (atomic_long_read(&nmem->pp_frag_count) == nr)
 		return 0;
 
-	ret = atomic_long_sub_return(nr, &page->pp_frag_count);
+	ret = atomic_long_sub_return(nr, &nmem->pp_frag_count);
 	WARN_ON(ret < 0);
 	return ret;
 }
 
+static inline long page_pool_defrag_page(struct page *page, long nr)
+{
+	return page_pool_defrag_netmem(page_netmem(page), nr);
+}
+
 static inline bool page_pool_is_last_frag(struct page_pool *pool,
 					  struct page *page)
 {
-- 
2.35.1