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Commit e7340f73 authored by Christoph Lameter's avatar Christoph Lameter Committed by Linus Torvalds
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[PATCH] page migration cleanup: remove useless definitions 



Remove the export for migrate_page_remove_references() and migrate_page_copy()
that are unlikely to be used directly by filesystems implementing migration.
The export was useful when buffer_migrate_page() lived in fs/buffer.c but it
has now been moved to migrate.c in the migration reorg.

Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 1d8b85cc

include/linux/migrate.h

+0 −2
Original line number Diff line number Diff line
@@ -7,8 +7,6 @@ 
extern int isolate_lru_page(struct page *p, struct list_head *pagelist);

extern int putback_lru_pages(struct list_head *l);

extern int migrate_page(struct page *, struct page *);

extern void migrate_page_copy(struct page *, struct page *);

extern int migrate_page_remove_references(struct page *, struct page *, int);

extern int migrate_pages(struct list_head *l, struct list_head *t,

		struct list_head *moved, struct list_head *failed);

extern int migrate_pages_to(struct list_head *pagelist,

mm/migrate.c

+2 −4
Original line number Diff line number Diff line
@@ -169,7 +169,7 @@ static int swap_page(struct page *page) 
 * Remove references for a page and establish the new page with the correct

 * basic settings to be able to stop accesses to the page.

 */

int migrate_page_remove_references(struct page *newpage,

static int migrate_page_remove_references(struct page *newpage,

				struct page *page, int nr_refs)

{

	struct address_space *mapping = page_mapping(page);
@@ -246,12 +246,11 @@ int migrate_page_remove_references(struct page *newpage, 


	return 0;

}

EXPORT_SYMBOL(migrate_page_remove_references);



/*

 * Copy the page to its new location

 */

void migrate_page_copy(struct page *newpage, struct page *page)

static void migrate_page_copy(struct page *newpage, struct page *page)

{

	copy_highpage(newpage, page);
@@ -286,7 +285,6 @@ void migrate_page_copy(struct page *newpage, struct page *page) 
	if (PageWriteback(newpage))

		end_page_writeback(newpage);

}

EXPORT_SYMBOL(migrate_page_copy);



/************************************************************

 *                    Migration functions