Commit 0b06bb3f authored by Joonsoo Kim's avatar Joonsoo Kim Committed by Linus Torvalds

mm/page_ext: rename offset to index

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.

Link: http://lkml.kernel.org/r/1471315879-32294-5-git-send-email-iamjoonsoo.kim@lge.comSigned-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e2f612e6
...@@ -102,7 +102,7 @@ void __meminit pgdat_page_ext_init(struct pglist_data *pgdat) ...@@ -102,7 +102,7 @@ void __meminit pgdat_page_ext_init(struct pglist_data *pgdat)
struct page_ext *lookup_page_ext(struct page *page) struct page_ext *lookup_page_ext(struct page *page)
{ {
unsigned long pfn = page_to_pfn(page); unsigned long pfn = page_to_pfn(page);
unsigned long offset; unsigned long index;
struct page_ext *base; struct page_ext *base;
base = NODE_DATA(page_to_nid(page))->node_page_ext; base = NODE_DATA(page_to_nid(page))->node_page_ext;
...@@ -119,9 +119,9 @@ struct page_ext *lookup_page_ext(struct page *page) ...@@ -119,9 +119,9 @@ struct page_ext *lookup_page_ext(struct page *page)
if (unlikely(!base)) if (unlikely(!base))
return NULL; return NULL;
#endif #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); MAX_ORDER_NR_PAGES);
return base + offset; return base + index;
} }
static int __init alloc_node_page_ext(int nid) static int __init alloc_node_page_ext(int nid)
......
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