mm: fold and remove lru_cache_add_anon() and lru_cache_add_file()

They're the same function, and for the purpose of all callers they are
equivalent to lru_cache_add().

[akpm@linux-foundation.org: fix it for local_lock changes]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Rik van Riel <riel@surriel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: http://lkml.kernel.org/r/20200520232525.798933-5-hannes@cmpxchg.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 10 insertions, 32 deletions

diff --git a/mm/swap.c b/mm/swap.c
index f7026f72aca9..6196d792c952 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -424,37 +424,6 @@ void mark_page_accessed(struct page *page)
 }
 EXPORT_SYMBOL(mark_page_accessed);
 
-static void __lru_cache_add(struct page *page)
-{
-	struct pagevec *pvec;
-
-	local_lock(&lru_pvecs.lock);
-	pvec = this_cpu_ptr(&lru_pvecs.lru_add);
-	get_page(page);
-	if (!pagevec_add(pvec, page) || PageCompound(page))
-		__pagevec_lru_add(pvec);
-	local_unlock(&lru_pvecs.lock);
-}
-
-/**
- * lru_cache_add_anon - add a page to the page lists
- * @page: the page to add
- */
-void lru_cache_add_anon(struct page *page)
-{
-	if (PageActive(page))
-		ClearPageActive(page);
-	__lru_cache_add(page);
-}
-
-void lru_cache_add_file(struct page *page)
-{
-	if (PageActive(page))
-		ClearPageActive(page);
-	__lru_cache_add(page);
-}
-EXPORT_SYMBOL(lru_cache_add_file);
-
 /**
  * lru_cache_add - add a page to a page list
  * @page: the page to be added to the LRU.
@@ -466,10 +435,19 @@ EXPORT_SYMBOL(lru_cache_add_file);
  */
 void lru_cache_add(struct page *page)
 {
+	struct pagevec *pvec;
+
 	VM_BUG_ON_PAGE(PageActive(page) && PageUnevictable(page), page);
 	VM_BUG_ON_PAGE(PageLRU(page), page);
-	__lru_cache_add(page);
+
+	get_page(page);
+	local_lock(&lru_pvecs.lock);
+	pvec = this_cpu_ptr(&lru_pvecs.lru_add);
+	if (!pagevec_add(pvec, page) || PageCompound(page))
+		__pagevec_lru_add(pvec);
+	local_unlock(&lru_pvecs.lock);
 }
+EXPORT_SYMBOL(lru_cache_add);
 
 /**
  * lru_cache_add_active_or_unevictable