mm/vmscan: convert reclaim_pages() to use a folio

Remove a few hidden calls to compound_head, saving 76 bytes of text.

Link: https://lkml.kernel.org/r/20220617154248.700416-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 313b6ab5dd639ffed7109c48bd0e02ddecf2b083..705ac3103aa063f93906bd6defda8f3d4a6ea613 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2625,34 +2625,33 @@ static unsigned int reclaim_page_list(struct list_head *page_list,
        return nr_reclaimed;
 }
 
-unsigned long reclaim_pages(struct list_head *page_list)
+unsigned long reclaim_pages(struct list_head *folio_list)
 {
        int nid;
        unsigned int nr_reclaimed = 0;
-       LIST_HEAD(node_page_list);
-       struct page *page;
+       LIST_HEAD(node_folio_list);
        unsigned int noreclaim_flag;
 
-       if (list_empty(page_list))
+       if (list_empty(folio_list))
                return nr_reclaimed;
 
        noreclaim_flag = memalloc_noreclaim_save();
 
-       nid = page_to_nid(lru_to_page(page_list));
+       nid = folio_nid(lru_to_folio(folio_list));
        do {
-               page = lru_to_page(page_list);
+               struct folio *folio = lru_to_folio(folio_list);
 
-               if (nid == page_to_nid(page)) {
-                       ClearPageActive(page);
-                       list_move(&page->lru, &node_page_list);
+               if (nid == folio_nid(folio)) {
+                       folio_clear_active(folio);
+                       list_move(&folio->lru, &node_folio_list);
                        continue;
                }
 
-               nr_reclaimed += reclaim_page_list(&node_page_list, NODE_DATA(nid));
-               nid = page_to_nid(lru_to_page(page_list));
-       } while (!list_empty(page_list));
+               nr_reclaimed += reclaim_page_list(&node_folio_list, NODE_DATA(nid));
+               nid = folio_nid(lru_to_folio(folio_list));
+       } while (!list_empty(folio_list));
 
-       nr_reclaimed += reclaim_page_list(&node_page_list, NODE_DATA(nid));
+       nr_reclaimed += reclaim_page_list(&node_folio_list, NODE_DATA(nid));
 
        memalloc_noreclaim_restore(noreclaim_flag);