[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: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>hifive-unleashed-5.1
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1d8b85ccf1
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e7340f7330
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@ -7,8 +7,6 @@
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extern int isolate_lru_page(struct page *p, struct list_head *pagelist);
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extern int isolate_lru_page(struct page *p, struct list_head *pagelist);
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extern int putback_lru_pages(struct list_head *l);
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extern int putback_lru_pages(struct list_head *l);
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extern int migrate_page(struct page *, struct page *);
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extern int migrate_page(struct page *, struct page *);
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extern void migrate_page_copy(struct page *, struct page *);
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extern int migrate_page_remove_references(struct page *, struct page *, int);
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extern int migrate_pages(struct list_head *l, struct list_head *t,
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extern int migrate_pages(struct list_head *l, struct list_head *t,
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struct list_head *moved, struct list_head *failed);
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struct list_head *moved, struct list_head *failed);
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extern int migrate_pages_to(struct list_head *pagelist,
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extern int migrate_pages_to(struct list_head *pagelist,
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@ -169,7 +169,7 @@ retry:
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* Remove references for a page and establish the new page with the correct
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* Remove references for a page and establish the new page with the correct
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* basic settings to be able to stop accesses to the page.
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* basic settings to be able to stop accesses to the page.
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*/
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*/
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int migrate_page_remove_references(struct page *newpage,
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static int migrate_page_remove_references(struct page *newpage,
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struct page *page, int nr_refs)
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struct page *page, int nr_refs)
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{
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{
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struct address_space *mapping = page_mapping(page);
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struct address_space *mapping = page_mapping(page);
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@ -246,12 +246,11 @@ int migrate_page_remove_references(struct page *newpage,
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return 0;
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return 0;
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}
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}
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EXPORT_SYMBOL(migrate_page_remove_references);
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/*
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/*
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* Copy the page to its new location
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* Copy the page to its new location
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*/
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*/
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void migrate_page_copy(struct page *newpage, struct page *page)
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static void migrate_page_copy(struct page *newpage, struct page *page)
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{
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{
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copy_highpage(newpage, page);
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copy_highpage(newpage, page);
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@ -286,7 +285,6 @@ void migrate_page_copy(struct page *newpage, struct page *page)
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if (PageWriteback(newpage))
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if (PageWriteback(newpage))
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end_page_writeback(newpage);
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end_page_writeback(newpage);
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}
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}
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EXPORT_SYMBOL(migrate_page_copy);
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/************************************************************
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/************************************************************
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* Migration functions
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* Migration functions
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