memory-failure: convert delete_from_lru_cache() to take a folio

All three callers now have a folio; pass it in instead of the page.
Saves five calls to compound_head().

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: Matthew Wilcox (Oracle)

mm/memory-failure.c

@@ -902,26 +902,26 @@ static const char * const action_page_types[] = {
  * The page count will stop it from being freed by unpoison.
  * Stress tests should be aware of this memory leak problem.
  */
-static int delete_from_lru_cache(struct page *p)
+static int delete_from_lru_cache(struct folio *folio)
 {
-	if (isolate_lru_page(p)) {
+	if (folio_isolate_lru(folio)) {
 		/*
 		 * Clear sensible page flags, so that the buddy system won't
-		 * complain when the page is unpoison-and-freed.
+		 * complain when the folio is unpoison-and-freed.
 		 */
-		ClearPageActive(p);
-		ClearPageUnevictable(p);
+		folio_clear_active(folio);
+		folio_clear_unevictable(folio);
 
 		/*
 		 * Poisoned page might never drop its ref count to 0 so we have
 		 * to uncharge it manually from its memcg.
 		 */
-		mem_cgroup_uncharge(page_folio(p));
+		mem_cgroup_uncharge(folio);
 
 		/*
-		 * drop the page count elevated by isolate_lru_page()
+		 * drop the refcount elevated by folio_isolate_lru()
 		 */
-		put_page(p);
+		folio_put(folio);
 		return 0;
 	}
 	return -EIO;
@@ -1019,7 +1019,7 @@ static int me_pagecache_clean(struct page_state *ps, struct page *p)
 	struct address_space *mapping;
 	bool extra_pins;
 
-	delete_from_lru_cache(p);
+	delete_from_lru_cache(folio);
 
 	/*
 	 * For anonymous folios the only reference left
@@ -1146,7 +1146,7 @@ static int me_swapcache_dirty(struct page_state *ps, struct page *p)
 	/* Trigger EIO in shmem: */
 	folio_clear_uptodate(folio);
 
-	ret = delete_from_lru_cache(p) ? MF_FAILED : MF_DELAYED;
+	ret = delete_from_lru_cache(folio) ? MF_FAILED : MF_DELAYED;
 	folio_unlock(folio);
 
 	if (ret == MF_DELAYED)
@@ -1165,7 +1165,7 @@ static int me_swapcache_clean(struct page_state *ps, struct page *p)
 
 	delete_from_swap_cache(folio);
 
-	ret = delete_from_lru_cache(p) ? MF_FAILED : MF_RECOVERED;
+	ret = delete_from_lru_cache(folio) ? MF_FAILED : MF_RECOVERED;
 	folio_unlock(folio);
 
 	if (has_extra_refcount(ps, p, false))