mm: make folios_put() the basis of release_pages()

[linux-2.6-microblaze.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 49e22a2..5c57fde 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -36,6 +36,7 @@ struct anon_vma;
 struct anon_vma_chain;
 struct user_struct;
 struct pt_regs;
+struct folio_batch;
 
 extern int sysctl_page_lock_unfairness;
 
@@ -1512,6 +1513,8 @@ static inline void folio_put_refs(struct folio *folio, int refs)
                __folio_put(folio);
 }
 
+void folios_put_refs(struct folio_batch *folios, unsigned int *refs);
+
 /*
  * union release_pages_arg - an array of pages or folios
  *
@@ -1534,18 +1537,19 @@ void release_pages(release_pages_arg, int nr);
 /**
  * folios_put - Decrement the reference count on an array of folios.
  * @folios: The folios.
- * @nr: How many folios there are.
  *
- * Like folio_put(), but for an array of folios.  This is more efficient
- * than writing the loop yourself as it will optimise the locks which
- * need to be taken if the folios are freed.
+ * Like folio_put(), but for a batch of folios.  This is more efficient
+ * than writing the loop yourself as it will optimise the locks which need
+ * to be taken if the folios are freed.  The folios batch is returned
+ * empty and ready to be reused for another batch; there is no need to
+ * reinitialise it.
  *
  * Context: May be called in process or interrupt context, but not in NMI
  * context.  May be called while holding a spinlock.
  */
-static inline void folios_put(struct folio **folios, unsigned int nr)
+static inline void folios_put(struct folio_batch *folios)
 {
-       release_pages(folios, nr);
+       folios_put_refs(folios, NULL);
 }
 
 static inline void put_page(struct page *page)