mm/balloon_compaction: move internal helpers to balloon_compaction.c

Let's move the helpers that are not required by drivers anymore.

While at it, drop the doc of balloon_page_device() as it is trivial.

[david@kernel.org: move balloon_page_device() under CONFIG_BALLOON_COMPACTION]
  Link: https://lkml.kernel.org/r/27f0adf1-54c1-4d99-8b7f-fd45574e7f41@kernel.org
Link: https://lkml.kernel.org/r/20260119230133.3551867-16-david@kernel.org
Signed-off-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Eugenio Pérez <eperezma@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jerrin Shaji George <jerrin.shaji-george@broadcom.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: SeongJae Park <sj@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

1 files changed, 0 insertions, 44 deletions

diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h
index d1d473939897..eec8994056a4 100644
--- a/include/linux/balloon_compaction.h
+++ b/include/linux/balloon_compaction.h
@@ -75,48 +75,4 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon)
 	balloon->migratepage = NULL;
 	balloon->adjust_managed_page_count = false;
 }
-
-#ifdef CONFIG_BALLOON_COMPACTION
-/*
- * balloon_page_device - get the b_dev_info descriptor for the balloon device
- *			 that enqueues the given page.
- */
-static inline struct balloon_dev_info *balloon_page_device(struct page *page)
-{
-	return (struct balloon_dev_info *)page_private(page);
-}
-#endif /* CONFIG_BALLOON_COMPACTION */
-
-/*
- * balloon_page_insert - insert a page into the balloon's page list and make
- *			 the page->private assignment accordingly.
- * @balloon : pointer to balloon device
- * @page    : page to be assigned as a 'balloon page'
- *
- * Caller must ensure the balloon_pages_lock is held.
- */
-static inline void balloon_page_insert(struct balloon_dev_info *balloon,
-				       struct page *page)
-{
-	__SetPageOffline(page);
-	if (IS_ENABLED(CONFIG_BALLOON_COMPACTION)) {
-		SetPageMovableOps(page);
-		set_page_private(page, (unsigned long)balloon);
-	}
-	list_add(&page->lru, &balloon->pages);
-}
-
-/*
- * balloon_page_finalize - prepare a balloon page that was removed from the
- *			   balloon list for release to the page allocator
- * @page: page to be released to the page allocator
- *
- * Caller must ensure the balloon_pages_lock is held.
- */
-static inline void balloon_page_finalize(struct page *page)
-{
-	if (IS_ENABLED(CONFIG_BALLOON_COMPACTION))
-		set_page_private(page, 0);
-	/* PageOffline is sticky until the page is freed to the buddy. */
-}
 #endif /* _LINUX_BALLOON_COMPACTION_H */