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mm/folio-compat: Remove migration compatibility functions

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migrate_page_move_mapping(), migrate_page_copy() and migrate_page_states()
are all now unused after converting all the filesystems from
aops->migratepage() to aops->migrate_folio().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Matthew Wilcox (Oracle)
2022-06-06 13:29:10 -04:00
parent 9d0ddc0cb5
commit 9800562f2a
3 changed files with 1 additions and 34 deletions
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11
include/linux/migrate.h
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@@ -70,12 +70,8 @@ extern int migrate_pages(struct list_head *l, new_page_t new, free_page_t free,
extern struct page *alloc_migration_target(struct page *page, unsigned long private);
extern int isolate_movable_page(struct page *page, isolate_mode_t mode);
extern void migrate_page_states(struct page *newpage, struct page *page);
extern void migrate_page_copy(struct page *newpage, struct page *page);
int migrate_huge_page_move_mapping(struct address_space *mapping,
struct folio *dst, struct folio *src);
extern int migrate_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page, int extra_count);
void migration_entry_wait_on_locked(swp_entry_t entry, pte_t *ptep,
spinlock_t *ptl);
void folio_migrate_flags(struct folio *newfolio, struct folio *folio);
@@ -96,13 +92,6 @@ static inline struct page *alloc_migration_target(struct page *page,
static inline int isolate_movable_page(struct page *page, isolate_mode_t mode)
{ return -EBUSY; }
static inline void migrate_page_states(struct page *newpage, struct page *page)
{
}
static inline void migrate_page_copy(struct page *newpage,
struct page *page) {}
static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
struct folio *dst, struct folio *src)
{