linux-kernel - [PATCH v2 4/6] mm/page_ext: rename offset to index

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Date:	Tue, 16 Aug 2016 11:51:17 +0900
From:	js1304@...il.com
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Vlastimil Babka <vbabka@...e.cz>, Minchan Kim <minchan@...nel.org>,
	Michal Hocko <mhocko@...nel.org>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH v2 4/6] mm/page_ext: rename offset to index

From: Joonsoo Kim <iamjoonsoo.kim@....com>

Here, 'offset' means entry index in page_ext array. Following patch
will use 'offset' for field offset in each entry so rename current
'offset' to prevent confusion.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
---
 mm/page_ext.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/page_ext.c b/mm/page_ext.c
index 44a4c02..1629282 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -102,7 +102,7 @@ void __meminit pgdat_page_ext_init(struct pglist_data *pgdat)
 struct page_ext *lookup_page_ext(struct page *page)
 {
 	unsigned long pfn = page_to_pfn(page);
-	unsigned long offset;
+	unsigned long index;
 	struct page_ext *base;
 
 	base = NODE_DATA(page_to_nid(page))->node_page_ext;
@@ -119,9 +119,9 @@ struct page_ext *lookup_page_ext(struct page *page)
 	if (unlikely(!base))
 		return NULL;
 #endif
-	offset = pfn - round_down(node_start_pfn(page_to_nid(page)),
+	index = pfn - round_down(node_start_pfn(page_to_nid(page)),
 					MAX_ORDER_NR_PAGES);
-	return base + offset;
+	return base + index;
 }
 
 static int __init alloc_node_page_ext(int nid)
-- 
1.9.1