Since the first parameter is only used by head page, it's better to make
it stright. And no needs to keep head checking:
VM_BUG_ON_PAGE(!PageHead(page), page);
Signed-off-by: Alex Shi <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
mm/huge_memory.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index acef164a8981..599367d25fca 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2445,21 +2445,20 @@ static void remap_page(struct page *page)
}
}
-void lru_add_page_tail(struct page *page, struct page *page_tail,
+void lru_add_page_tail(struct page *head, struct page *page_tail,
struct lruvec *lruvec, struct list_head *list)
{
const int file = 0;
- VM_BUG_ON_PAGE(!PageHead(page), page);
- VM_BUG_ON_PAGE(PageCompound(page_tail), page);
- VM_BUG_ON_PAGE(PageLRU(page_tail), page);
+ VM_BUG_ON_PAGE(PageCompound(page_tail), head);
+ VM_BUG_ON_PAGE(PageLRU(page_tail), head);
lockdep_assert_held(&lruvec_pgdat(lruvec)->lru_lock);
if (!list)
SetPageLRU(page_tail);
- if (likely(PageLRU(page)))
- list_add_tail(&page_tail->lru, &page->lru);
+ if (likely(PageLRU(head)))
+ list_add_tail(&page_tail->lru, &head->lru);
else if (list) {
/* page reclaim is reclaiming a huge page */
get_page(page_tail);
@@ -2476,7 +2475,7 @@ void lru_add_page_tail(struct page *page, struct page *page_tail,
page_lru(page_tail));
}
- if (!PageUnevictable(page))
+ if (!PageUnevictable(head))
update_page_reclaim_stat(lruvec, file, PageActive(page_tail));
}
--
1.8.3.1