linux-kernel - [PATCH 02/15] mm/cma: move init_cma_reserved

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Message-Id: <20230319220008.2138576-3-rppt@kernel.org>
Date:   Sun, 19 Mar 2023 23:59:55 +0200
From:   Mike Rapoport <rppt@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     David Hildenbrand <david@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...nel.org>,
        Mike Rapoport <rppt@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Vlastimil Babka <vbabka@...e.cz>, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 02/15] mm/cma: move init_cma_reserved_pages() to cma.c and make it static

From: "Mike Rapoport (IBM)" <rppt@...nel.org>

init_cma_reserved_pages() only used in cma.c, no point of having it in
page_alloc.c.

Move init_cma_reserved_pages() to cma.c and make it static.

Signed-off-by: Mike Rapoport (IBM) <rppt@...nel.org>
---
 include/linux/gfp.h |  5 -----
 mm/cma.c            | 21 +++++++++++++++++++++
 mm/page_alloc.c     | 21 ---------------------
 3 files changed, 21 insertions(+), 26 deletions(-)

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 65a78773dcca..7c554e4bd49f 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -361,9 +361,4 @@ extern struct page *alloc_contig_pages(unsigned long nr_pages, gfp_t gfp_mask,
 #endif
 void free_contig_range(unsigned long pfn, unsigned long nr_pages);
 
-#ifdef CONFIG_CMA
-/* CMA stuff */
-extern void init_cma_reserved_pageblock(struct page *page);
-#endif
-
 #endif /* __LINUX_GFP_H */
diff --git a/mm/cma.c b/mm/cma.c
index a7263aa02c92..ce08fb9825b4 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -31,8 +31,10 @@
 #include <linux/highmem.h>
 #include <linux/io.h>
 #include <linux/kmemleak.h>
+#include <linux/page-isolation.h>
 #include <trace/events/cma.h>
 
+#include "internal.h"
 #include "cma.h"
 
 struct cma cma_areas[MAX_CMA_AREAS];
@@ -93,6 +95,25 @@ static void cma_clear_bitmap(struct cma *cma, unsigned long pfn,
 	spin_unlock_irqrestore(&cma->lock, flags);
 }
 
+/* Free whole pageblock and set its migration type to MIGRATE_CMA. */
+static void init_cma_reserved_pageblock(struct page *page)
+{
+	unsigned i = pageblock_nr_pages;
+	struct page *p = page;
+
+	do {
+		__ClearPageReserved(p);
+		set_page_count(p, 0);
+	} while (++p, --i);
+
+	set_pageblock_migratetype(page, MIGRATE_CMA);
+	set_page_refcounted(page);
+	__free_pages(page, pageblock_order);
+
+	adjust_managed_page_count(page, pageblock_nr_pages);
+	page_zone(page)->cma_pages += pageblock_nr_pages;
+}
+
 static void __init cma_activate_area(struct cma *cma)
 {
 	unsigned long base_pfn = cma->base_pfn, pfn;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 87d760236dba..22e3da842e3f 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2280,27 +2280,6 @@ void __init page_alloc_init_late(void)
 		set_zone_contiguous(zone);
 }
 
-#ifdef CONFIG_CMA
-/* Free whole pageblock and set its migration type to MIGRATE_CMA. */
-void __init init_cma_reserved_pageblock(struct page *page)
-{
-	unsigned i = pageblock_nr_pages;
-	struct page *p = page;
-
-	do {
-		__ClearPageReserved(p);
-		set_page_count(p, 0);
-	} while (++p, --i);
-
-	set_pageblock_migratetype(page, MIGRATE_CMA);
-	set_page_refcounted(page);
-	__free_pages(page, pageblock_order);
-
-	adjust_managed_page_count(page, pageblock_nr_pages);
-	page_zone(page)->cma_pages += pageblock_nr_pages;
-}
-#endif
-
 /*
  * The order of subdivision here is critical for the IO subsystem.
  * Please do not alter this order without good reasons and regression
-- 
2.35.1