[PATCH v1 12/23] mm/balloon_compaction: remove balloon_page_push/pop()

[David Hildenbrand]

Let's remove these helpers as they are unused now.

Signed-off-by: David Hildenbrand <david at redhat.com>
---
 include/linux/balloon_compaction.h | 30 ------------------------------
 mm/balloon_compaction.c            |  5 ++---
 2 files changed, 2 insertions(+), 33 deletions(-)

diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h
index 1452ea0635245..e5451cf1f6589 100644
--- a/include/linux/balloon_compaction.h
+++ b/include/linux/balloon_compaction.h
@@ -126,34 +126,4 @@ static inline void balloon_page_finalize(struct page *page)
 		set_page_private(page, 0);
 	/* PageOffline is sticky until the page is freed to the buddy. */
 }
-
-/*
- * balloon_page_push - insert a page into a page list.
- * @head : pointer to list
- * @page : page to be added
- *
- * Caller must ensure the page is private and protect the list.
- */
-static inline void balloon_page_push(struct list_head *pages, struct page *page)
-{
-	list_add(&page->lru, pages);
-}
-
-/*
- * balloon_page_pop - remove a page from a page list.
- * @head : pointer to list
- * @page : page to be added
- *
- * Caller must ensure the page is private and protect the list.
- */
-static inline struct page *balloon_page_pop(struct list_head *pages)
-{
-	struct page *page = list_first_entry_or_null(pages, struct page, lru);
-
-	if (!page)
-		return NULL;
-
-	list_del(&page->lru);
-	return page;
-}
 #endif /* _LINUX_BALLOON_COMPACTION_H */
diff --git a/mm/balloon_compaction.c b/mm/balloon_compaction.c
index c44e0b62203cc..90b2d61a593b7 100644
--- a/mm/balloon_compaction.c
+++ b/mm/balloon_compaction.c
@@ -128,9 +128,8 @@ EXPORT_SYMBOL_GPL(balloon_page_alloc);
  * Drivers must call this function to properly enqueue a new allocated balloon
  * page before definitively removing the page from the guest system.
  *
- * Drivers must not call balloon_page_enqueue on pages that have been pushed to
- * a list with balloon_page_push before removing them with balloon_page_pop. To
- * enqueue a list of pages, use balloon_page_list_enqueue instead.
+ * Drivers must not enqueue pages while page->lru is still in
+ * use, and must not use page->lru until a page was unqueued again.
  */
 void balloon_page_enqueue(struct balloon_dev_info *b_dev_info,
 			  struct page *page)
-- 
2.51.0