143 строки
3.3 KiB
C
143 строки
3.3 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>
|
|
#include "internal.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);
|
|
|
|
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);
|
|
|
|
bool clear_page_dirty_for_io(struct page *page)
|
|
{
|
|
return folio_clear_dirty_for_io(page_folio(page));
|
|
}
|
|
EXPORT_SYMBOL(clear_page_dirty_for_io);
|
|
|
|
bool redirty_page_for_writepage(struct writeback_control *wbc,
|
|
struct page *page)
|
|
{
|
|
return folio_redirty_for_writepage(wbc, page_folio(page));
|
|
}
|
|
EXPORT_SYMBOL(redirty_page_for_writepage);
|
|
|
|
void lru_cache_add(struct page *page)
|
|
{
|
|
folio_add_lru(page_folio(page));
|
|
}
|
|
EXPORT_SYMBOL(lru_cache_add);
|
|
|
|
int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
|
|
pgoff_t index, gfp_t gfp)
|
|
{
|
|
return filemap_add_folio(mapping, page_folio(page), index, gfp);
|
|
}
|
|
EXPORT_SYMBOL(add_to_page_cache_lru);
|
|
|
|
noinline
|
|
struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
|
|
int fgp_flags, gfp_t gfp)
|
|
{
|
|
struct folio *folio;
|
|
|
|
folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
|
|
if ((fgp_flags & FGP_HEAD) || !folio || xa_is_value(folio))
|
|
return &folio->page;
|
|
return folio_file_page(folio, index);
|
|
}
|
|
EXPORT_SYMBOL(pagecache_get_page);
|
|
|
|
struct page *grab_cache_page_write_begin(struct address_space *mapping,
|
|
pgoff_t index)
|
|
{
|
|
unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE;
|
|
|
|
return pagecache_get_page(mapping, index, fgp_flags,
|
|
mapping_gfp_mask(mapping));
|
|
}
|
|
EXPORT_SYMBOL(grab_cache_page_write_begin);
|
|
|
|
void delete_from_page_cache(struct page *page)
|
|
{
|
|
return filemap_remove_folio(page_folio(page));
|
|
}
|
|
|
|
int try_to_release_page(struct page *page, gfp_t gfp)
|
|
{
|
|
return filemap_release_folio(page_folio(page), gfp);
|
|
}
|
|
EXPORT_SYMBOL(try_to_release_page);
|
|
|
|
int isolate_lru_page(struct page *page)
|
|
{
|
|
if (WARN_RATELIMIT(PageTail(page), "trying to isolate tail page"))
|
|
return -EBUSY;
|
|
return folio_isolate_lru((struct folio *)page);
|
|
}
|
|
|
|
void putback_lru_page(struct page *page)
|
|
{
|
|
folio_putback_lru(page_folio(page));
|
|
}
|