[PATCH] mm/filemap: Make folio_put_wait_locked static

[Ke Sun <sunke@kylinos.cn>]

It's only used in mm/filemap.c, since commit <ffa65753c431>
("mm/migrate.c: rework migration_entry_wait() to not take a pageref").

Make it static.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Reported-by: k2ci <kernel-bot@kylinos.cn>
Signed-off-by: Ke Sun <sunke@kylinos.cn>
---
 include/linux/pagemap.h | 1 -
 mm/filemap.c            | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 0178b2040ea3..82880993dd1a 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -1042,7 +1042,6 @@ static inline int wait_on_page_locked_killable(struct page *page)
 	return folio_wait_locked_killable(page_folio(page));
 }
 
-int folio_put_wait_locked(struct folio *folio, int state);
 void wait_on_page_writeback(struct page *page);
 void folio_wait_writeback(struct folio *folio);
 int folio_wait_writeback_killable(struct folio *folio);
diff --git a/mm/filemap.c b/mm/filemap.c
index 15800334147b..ade9b7bfe7fc 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1467,7 +1467,7 @@ EXPORT_SYMBOL(folio_wait_bit_killable);
  *
  * Return: 0 if the folio was unlocked or -EINTR if interrupted by a signal.
  */
-int folio_put_wait_locked(struct folio *folio, int state)
+static int folio_put_wait_locked(struct folio *folio, int state)
 {
 	return folio_wait_bit_common(folio, PG_locked, state, DROP);
 }
-- 
2.25.1