From 74d3d77865d90613dff8c199ba00575632ed2ac0 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Thu, 16 Jun 2016 23:26:14 +0200 Subject: [PATCH] mm: Export migrate_page_move_mapping and migrate_page_copy commit 1118dce773d84f39ebd51a9fe7261f9169cb056e upstream. Export these symbols such that UBIFS can implement ->migratepage. Signed-off-by: Richard Weinberger Acked-by: Christoph Hellwig Signed-off-by: Greg Kroah-Hartman [wt: also add the prototype to include/linux/migrate.h] Signed-off-by: Willy Tarreau --- include/linux/migrate.h | 3 +++ mm/migrate.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/include/linux/migrate.h b/include/linux/migrate.h index a405d3dc0f61..e98692748066 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -55,6 +55,9 @@ extern int migrate_vmas(struct mm_struct *mm, extern void migrate_page_copy(struct page *newpage, struct page *page); extern int migrate_huge_page_move_mapping(struct address_space *mapping, struct page *newpage, struct page *page); +extern int migrate_page_move_mapping(struct address_space *mapping, + struct page *newpage, struct page *page, + struct buffer_head *head, enum migrate_mode mode); #else static inline void putback_lru_pages(struct list_head *l) {} diff --git a/mm/migrate.c b/mm/migrate.c index 7ba262af88fb..e1d1d429ce64 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -414,6 +414,7 @@ static int migrate_page_move_mapping(struct address_space *mapping, return MIGRATEPAGE_SUCCESS; } +EXPORT_SYMBOL(migrate_page_move_mapping); /* * The expected number of remaining references is the same as that @@ -505,6 +506,7 @@ void migrate_page_copy(struct page *newpage, struct page *page) if (PageWriteback(newpage)) end_page_writeback(newpage); } +EXPORT_SYMBOL(migrate_page_copy); /************************************************************ * Migration functions