linux-kernel - [PATCH 1/2] mm: Move definition of 'zone

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Date:   Wed, 31 Aug 2016 08:55:49 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     akpm@...ux-foundation.org
Subject: [PATCH 1/2] mm: Move definition of 'zone_names' array into mmzone.h

zone_names[] is used to identify any zone given it's index which
can be used in many other places. So moving the definition into
include/linux/mmzone.h for broader access.

Signed-off-by: Anshuman Khandual <khandual@...ux.vnet.ibm.com>
---
 include/linux/mmzone.h | 17 +++++++++++++++++
 mm/page_alloc.c        | 17 -----------------
 2 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d572b78..01ca3f4 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -341,6 +341,23 @@ enum zone_type {
 
 };
 
+static char * const zone_names[__MAX_NR_ZONES] = {
+#ifdef CONFIG_ZONE_DMA
+	 "DMA",
+#endif
+#ifdef CONFIG_ZONE_DMA32
+	 "DMA32",
+#endif
+	 "Normal",
+#ifdef CONFIG_HIGHMEM
+	 "HighMem",
+#endif
+	 "Movable",
+#ifdef CONFIG_ZONE_DEVICE
+	 "Device",
+#endif
+};
+
 #ifndef __GENERATING_BOUNDS_H
 
 struct zone {
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3fbe73a..8e2261c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -207,23 +207,6 @@ int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = {
 
 EXPORT_SYMBOL(totalram_pages);
 
-static char * const zone_names[MAX_NR_ZONES] = {
-#ifdef CONFIG_ZONE_DMA
-	 "DMA",
-#endif
-#ifdef CONFIG_ZONE_DMA32
-	 "DMA32",
-#endif
-	 "Normal",
-#ifdef CONFIG_HIGHMEM
-	 "HighMem",
-#endif
-	 "Movable",
-#ifdef CONFIG_ZONE_DEVICE
-	 "Device",
-#endif
-};
-
 char * const migratetype_names[MIGRATE_TYPES] = {
 	"Unmovable",
 	"Movable",
-- 
1.9.3