linux-IllusionX/mm/folio-compat.c
Matthew Wilcox (Oracle) 85d4d2ebc8 mm/writeback: Add filemap_dirty_folio()
Reimplement __set_page_dirty_nobuffers() as a wrapper around
filemap_dirty_folio().  Eventually folio_mark_dirty() will pass
the folio's mapping to the address space's ->dirty_folio()
operation, so add the parameter to filemap_dirty_folio() now.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
2021-10-18 07:49:39 -04:00

91 lines
2.1 KiB
C

/*
* Compatibility functions which bloat the callers too much to make inline.
* All of the callers of these functions should be converted to use folios
* eventually.
*/
#include <linux/migrate.h>
#include <linux/pagemap.h>
#include <linux/swap.h>
struct address_space *page_mapping(struct page *page)
{
return folio_mapping(page_folio(page));
}
EXPORT_SYMBOL(page_mapping);
void unlock_page(struct page *page)
{
return folio_unlock(page_folio(page));
}
EXPORT_SYMBOL(unlock_page);
void end_page_writeback(struct page *page)
{
return folio_end_writeback(page_folio(page));
}
EXPORT_SYMBOL(end_page_writeback);
void wait_on_page_writeback(struct page *page)
{
return folio_wait_writeback(page_folio(page));
}
EXPORT_SYMBOL_GPL(wait_on_page_writeback);
void wait_for_stable_page(struct page *page)
{
return folio_wait_stable(page_folio(page));
}
EXPORT_SYMBOL_GPL(wait_for_stable_page);
bool page_mapped(struct page *page)
{
return folio_mapped(page_folio(page));
}
EXPORT_SYMBOL(page_mapped);
void mark_page_accessed(struct page *page)
{
folio_mark_accessed(page_folio(page));
}
EXPORT_SYMBOL(mark_page_accessed);
#ifdef CONFIG_MIGRATION
int migrate_page_move_mapping(struct address_space *mapping,
struct page *newpage, struct page *page, int extra_count)
{
return folio_migrate_mapping(mapping, page_folio(newpage),
page_folio(page), extra_count);
}
EXPORT_SYMBOL(migrate_page_move_mapping);
void migrate_page_states(struct page *newpage, struct page *page)
{
folio_migrate_flags(page_folio(newpage), page_folio(page));
}
EXPORT_SYMBOL(migrate_page_states);
void migrate_page_copy(struct page *newpage, struct page *page)
{
folio_migrate_copy(page_folio(newpage), page_folio(page));
}
EXPORT_SYMBOL(migrate_page_copy);
#endif
bool set_page_writeback(struct page *page)
{
return folio_start_writeback(page_folio(page));
}
EXPORT_SYMBOL(set_page_writeback);
bool set_page_dirty(struct page *page)
{
return folio_mark_dirty(page_folio(page));
}
EXPORT_SYMBOL(set_page_dirty);
int __set_page_dirty_nobuffers(struct page *page)
{
return filemap_dirty_folio(page_mapping(page), page_folio(page));
}
EXPORT_SYMBOL(__set_page_dirty_nobuffers);