From: Richard Weinberger Date: Thu, 16 Jun 2016 21:26:14 +0000 (+0200) Subject: mm: Export migrate_page_move_mapping and migrate_page_copy X-Git-Tag: v3.10.103~64 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31f476515df016bc1c9c119a7c7ebc1d274f04ad;p=thirdparty%2Fkernel%2Fstable.git 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 --- diff --git a/include/linux/migrate.h b/include/linux/migrate.h index a405d3dc0f61f..e986927480668 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 a61500f2671fb..2ee28c2be6a56 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -412,6 +412,7 @@ 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 @@ -503,6 +504,7 @@ void migrate_page_copy(struct page *newpage, struct page *page) if (PageWriteback(newpage)) end_page_writeback(newpage); } +EXPORT_SYMBOL(migrate_page_copy); /************************************************************ * Migration functions