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Subject[PATCH v2 4/6] mm/page_ext: rename offset to index
Date
From: Joonsoo Kim <iamjoonsoo.kim@lge.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@lge.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
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