137 строки
3.2 KiB
C
137 строки
3.2 KiB
C
/*
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* Compatibility functions which bloat the callers too much to make inline.
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* All of the callers of these functions should be converted to use folios
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* eventually.
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*/
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#include <linux/migrate.h>
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#include <linux/pagemap.h>
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#include <linux/rmap.h>
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#include <linux/swap.h>
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#include "internal.h"
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struct address_space *page_mapping(struct page *page)
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{
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return folio_mapping(page_folio(page));
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}
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EXPORT_SYMBOL(page_mapping);
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void unlock_page(struct page *page)
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{
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return folio_unlock(page_folio(page));
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}
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EXPORT_SYMBOL(unlock_page);
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void end_page_writeback(struct page *page)
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{
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return folio_end_writeback(page_folio(page));
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}
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EXPORT_SYMBOL(end_page_writeback);
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void wait_on_page_writeback(struct page *page)
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{
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return folio_wait_writeback(page_folio(page));
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}
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EXPORT_SYMBOL_GPL(wait_on_page_writeback);
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void wait_for_stable_page(struct page *page)
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{
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return folio_wait_stable(page_folio(page));
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}
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EXPORT_SYMBOL_GPL(wait_for_stable_page);
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void mark_page_accessed(struct page *page)
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{
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folio_mark_accessed(page_folio(page));
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}
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EXPORT_SYMBOL(mark_page_accessed);
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bool set_page_writeback(struct page *page)
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{
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return folio_start_writeback(page_folio(page));
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}
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EXPORT_SYMBOL(set_page_writeback);
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bool set_page_dirty(struct page *page)
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{
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return folio_mark_dirty(page_folio(page));
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}
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EXPORT_SYMBOL(set_page_dirty);
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int __set_page_dirty_nobuffers(struct page *page)
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{
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return filemap_dirty_folio(page_mapping(page), page_folio(page));
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}
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EXPORT_SYMBOL(__set_page_dirty_nobuffers);
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bool clear_page_dirty_for_io(struct page *page)
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{
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return folio_clear_dirty_for_io(page_folio(page));
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}
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EXPORT_SYMBOL(clear_page_dirty_for_io);
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bool redirty_page_for_writepage(struct writeback_control *wbc,
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struct page *page)
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{
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return folio_redirty_for_writepage(wbc, page_folio(page));
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}
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EXPORT_SYMBOL(redirty_page_for_writepage);
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void lru_cache_add_inactive_or_unevictable(struct page *page,
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struct vm_area_struct *vma)
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{
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folio_add_lru_vma(page_folio(page), vma);
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}
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int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
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pgoff_t index, gfp_t gfp)
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{
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return filemap_add_folio(mapping, page_folio(page), index, gfp);
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}
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EXPORT_SYMBOL(add_to_page_cache_lru);
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noinline
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struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
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int fgp_flags, gfp_t gfp)
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{
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struct folio *folio;
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folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
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if (!folio || xa_is_value(folio))
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return &folio->page;
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return folio_file_page(folio, index);
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}
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EXPORT_SYMBOL(pagecache_get_page);
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struct page *grab_cache_page_write_begin(struct address_space *mapping,
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pgoff_t index)
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{
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unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE;
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return pagecache_get_page(mapping, index, fgp_flags,
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mapping_gfp_mask(mapping));
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}
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EXPORT_SYMBOL(grab_cache_page_write_begin);
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int isolate_lru_page(struct page *page)
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{
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if (WARN_RATELIMIT(PageTail(page), "trying to isolate tail page"))
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return -EBUSY;
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return folio_isolate_lru((struct folio *)page);
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}
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void putback_lru_page(struct page *page)
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{
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folio_putback_lru(page_folio(page));
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}
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#ifdef CONFIG_MMU
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void page_add_new_anon_rmap(struct page *page, struct vm_area_struct *vma,
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unsigned long address)
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{
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VM_BUG_ON_PAGE(PageTail(page), page);
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return folio_add_new_anon_rmap((struct folio *)page, vma, address);
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}
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#endif
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