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Subject[PATCH 2/2] mm/page_alloc.c: use list_for_each_entry in mark_free_pages()
Date
Use list_for_each_entry instead of list_for_each + list_entry to
simplify the code.

Signed-off-by: Geliang Tang <geliangtang@163.com>
---
mm/page_alloc.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0d38185..1c1ad58 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2027,7 +2027,7 @@ void mark_free_pages(struct zone *zone)
unsigned long pfn, max_zone_pfn;
unsigned long flags;
unsigned int order, t;
- struct list_head *curr;
+ struct page *page;

if (zone_is_empty(zone))
return;
@@ -2037,17 +2037,17 @@ void mark_free_pages(struct zone *zone)
max_zone_pfn = zone_end_pfn(zone);
for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
if (pfn_valid(pfn)) {
- struct page *page = pfn_to_page(pfn);
-
+ page = pfn_to_page(pfn);
if (!swsusp_page_is_forbidden(page))
swsusp_unset_page_free(page);
}

for_each_migratetype_order(order, t) {
- list_for_each(curr, &zone->free_area[order].free_list[t]) {
+ list_for_each_entry(page,
+ &zone->free_area[order].free_list[t], lru) {
unsigned long i;

- pfn = page_to_pfn(list_entry(curr, struct page, lru));
+ pfn = page_to_pfn(page);
for (i = 0; i < (1UL << order); i++)
swsusp_set_page_free(pfn_to_page(pfn + i));
}
--
2.5.0



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