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Subject: [PATCH v3 2/6] mm: Move set/get_pcppage_migratetype to mmzone.h
From:   Alexander Duyck <alexander.duyck@gmail.com>
To:     nitesh@redhat.com, kvm@vger.kernel.org, david@redhat.com,
        mst@redhat.com, dave.hansen@intel.com,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        akpm@linux-foundation.org
Cc:     yang.zhang.wz@gmail.com, pagupta@redhat.com, riel@surriel.com,
        konrad.wilk@oracle.com, willy@infradead.org,
        lcapitulino@redhat.com, wei.w.wang@intel.com, aarcange@redhat.com,
        pbonzini@redhat.com, dan.j.williams@intel.com,
        alexander.h.duyck@linux.intel.com
Date:   Thu, 01 Aug 2019 15:29:26 -0700
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From: Alexander Duyck <alexander.h.duyck@linux.intel.com>

In order to support page aeration it will be necessary to store and
retrieve the migratetype of a page. To enable that I am moving the set and
get operations for pcppage_migratetype into the mm/internal.h header so
that they can be used outside of the page_alloc.c file.

Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
---
 mm/internal.h   |   18 ++++++++++++++++++
 mm/page_alloc.c |   18 ------------------
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/mm/internal.h b/mm/internal.h
index 0d5f720c75ab..e4a1a57bbd40 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -549,6 +549,24 @@ static inline bool is_migrate_highatomic_page(struct page *page)
 	return get_pageblock_migratetype(page) == MIGRATE_HIGHATOMIC;
 }
 
+/*
+ * A cached value of the page's pageblock's migratetype, used when the page is
+ * put on a pcplist. Used to avoid the pageblock migratetype lookup when
+ * freeing from pcplists in most cases, at the cost of possibly becoming stale.
+ * Also the migratetype set in the page does not necessarily match the pcplist
+ * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any
+ * other index - this ensures that it will be put on the correct CMA freelist.
+ */
+static inline int get_pcppage_migratetype(struct page *page)
+{
+	return page->index;
+}
+
+static inline void set_pcppage_migratetype(struct page *page, int migratetype)
+{
+	page->index = migratetype;
+}
+
 void setup_zone_pageset(struct zone *zone);
 extern struct page *alloc_new_node_page(struct page *page, unsigned long node);
 #endif	/* __MM_INTERNAL_H */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index dfed182f200d..7cedc73953fd 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -185,24 +185,6 @@ static int __init early_init_on_free(char *buf)
 }
 early_param("init_on_free", early_init_on_free);
 
-/*
- * A cached value of the page's pageblock's migratetype, used when the page is
- * put on a pcplist. Used to avoid the pageblock migratetype lookup when
- * freeing from pcplists in most cases, at the cost of possibly becoming stale.
- * Also the migratetype set in the page does not necessarily match the pcplist
- * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any
- * other index - this ensures that it will be put on the correct CMA freelist.
- */
-static inline int get_pcppage_migratetype(struct page *page)
-{
-	return page->index;
-}
-
-static inline void set_pcppage_migratetype(struct page *page, int migratetype)
-{
-	page->index = migratetype;
-}
-
 #ifdef CONFIG_PM_SLEEP
 /*
  * The following functions are used by the suspend/hibernate code to temporarily