325 	return page->mapping == PAGE_MAPPING_DAX_SHARED;  in dax_page_is_shared()
334 	if (page->mapping != PAGE_MAPPING_DAX_SHARED) {  in dax_page_share_get()
339 		if (page->mapping)  in dax_page_share_get()
341 		page->mapping = PAGE_MAPPING_DAX_SHARED;  in dax_page_share_get()
356 static void dax_associate_entry(void *entry, struct address_space *mapping,  in dax_associate_entry()  argument
372 			WARN_ON_ONCE(page->mapping);  in dax_associate_entry()
373 			page->mapping = mapping;  in dax_associate_entry()
379 static void dax_disassociate_entry(void *entry, struct address_space *mapping,  in dax_disassociate_entry()  argument
396 			WARN_ON_ONCE(page->mapping && page->mapping != mapping);  in dax_disassociate_entry()
397 		page->mapping = NULL;  in dax_disassociate_entry()
431 		struct address_space *mapping = READ_ONCE(folio->mapping);  in dax_lock_folio()  local
434 		if (!mapping || !dax_mapping(mapping))  in dax_lock_folio()
445 		if (S_ISCHR(mapping->host->i_mode))  in dax_lock_folio()
448 		xas.xa = &mapping->i_pages;  in dax_lock_folio()
450 		if (mapping != folio->mapping) {  in dax_lock_folio()
472 	struct address_space *mapping = folio->mapping;  in dax_unlock_folio()  local
473 	XA_STATE(xas, &mapping->i_pages, folio->index);  in dax_unlock_folio()
475 	if (S_ISCHR(mapping->host->i_mode))  in dax_unlock_folio()
490 dax_entry_t dax_lock_mapping_entry(struct address_space *mapping, pgoff_t index,  in dax_lock_mapping_entry()  argument
499 		if (!dax_mapping(mapping))  in dax_lock_mapping_entry()
502 		xas.xa = &mapping->i_pages;  in dax_lock_mapping_entry()
533 void dax_unlock_mapping_entry(struct address_space *mapping, pgoff_t index,  in dax_unlock_mapping_entry()  argument
536 	XA_STATE(xas, &mapping->i_pages, index);  in dax_unlock_mapping_entry()
574 		struct address_space *mapping, unsigned int order)  in grab_mapping_entry()  argument
616 			unmap_mapping_pages(mapping,  in grab_mapping_entry()
623 		dax_disassociate_entry(entry, mapping, false);  in grab_mapping_entry()
626 		mapping->nrpages -= PG_PMD_NR;  in grab_mapping_entry()
642 		mapping->nrpages += 1UL << order;  in grab_mapping_entry()
647 	if (xas_nomem(xas, mapping_gfp_mask(mapping) & ~__GFP_HIGHMEM))  in grab_mapping_entry()
677 struct page *dax_layout_busy_page_range(struct address_space *mapping,  in dax_layout_busy_page_range()  argument
685 	XA_STATE(xas, &mapping->i_pages, start_idx);  in dax_layout_busy_page_range()
693 	if (!dax_mapping(mapping) || !mapping_mapped(mapping))  in dax_layout_busy_page_range()
713 	unmap_mapping_pages(mapping, start_idx, end_idx - start_idx + 1, 0);  in dax_layout_busy_page_range()
739 struct page *dax_layout_busy_page(struct address_space *mapping)  in dax_layout_busy_page()  argument
741 	return dax_layout_busy_page_range(mapping, 0, LLONG_MAX);  in dax_layout_busy_page()
745 static int __dax_invalidate_entry(struct address_space *mapping,  in __dax_invalidate_entry()  argument
748 	XA_STATE(xas, &mapping->i_pages, index);  in __dax_invalidate_entry()
760 	dax_disassociate_entry(entry, mapping, trunc);  in __dax_invalidate_entry()
762 	mapping->nrpages -= 1UL << dax_entry_order(entry);  in __dax_invalidate_entry()
770 static int __dax_clear_dirty_range(struct address_space *mapping,  in __dax_clear_dirty_range()  argument
773 	XA_STATE(xas, &mapping->i_pages, start);  in __dax_clear_dirty_range()
801 int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index)  in dax_delete_mapping_entry()  argument
803 	int ret = __dax_invalidate_entry(mapping, index, true);  in dax_delete_mapping_entry()
819 int dax_invalidate_mapping_entry_sync(struct address_space *mapping,  in dax_invalidate_mapping_entry_sync()  argument
822 	return __dax_invalidate_entry(mapping, index, false);  in dax_invalidate_mapping_entry_sync()
873 	struct address_space *mapping = vmf->vma->vm_file->f_mapping;  in dax_insert_entry()  local
880 		__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);  in dax_insert_entry()
886 			unmap_mapping_pages(mapping, index & ~PG_PMD_COLOUR,  in dax_insert_entry()
889 			unmap_mapping_pages(mapping, index, 1, false);  in dax_insert_entry()
897 		dax_disassociate_entry(entry, mapping, false);  in dax_insert_entry()
898 		dax_associate_entry(new_entry, mapping, vmf->vma, vmf->address,  in dax_insert_entry()
927 		struct address_space *mapping, void *entry)  in dax_writeback_one()  argument
992 	i_mmap_lock_read(mapping);  in dax_writeback_one()
993 	vma_interval_tree_foreach(vma, &mapping->i_mmap, index, end) {  in dax_writeback_one()
997 	i_mmap_unlock_read(mapping);  in dax_writeback_one()
1012 	trace_dax_writeback_one(mapping->host, index, count);  in dax_writeback_one()
1025 int dax_writeback_mapping_range(struct address_space *mapping,  in dax_writeback_mapping_range()  argument
1028 	XA_STATE(xas, &mapping->i_pages, wbc->range_start >> PAGE_SHIFT);  in dax_writeback_mapping_range()
1029 	struct inode *inode = mapping->host;  in dax_writeback_mapping_range()
1038 	if (mapping_empty(mapping) || wbc->sync_mode != WB_SYNC_ALL)  in dax_writeback_mapping_range()
1043 	tag_pages_for_writeback(mapping, xas.xa_index, end_index);  in dax_writeback_mapping_range()
1047 		ret = dax_writeback_one(&xas, dax_dev, mapping, entry);  in dax_writeback_mapping_range()
1049 			mapping_set_error(mapping, ret);  in dax_writeback_mapping_range()
1205 	struct address_space *mapping = vmf->vma->vm_file->f_mapping;  in dax_pmd_load_hole()  local
1208 	struct inode *inode = mapping->host;  in dax_pmd_load_hole()
1700 	struct address_space *mapping = vmf->vma->vm_file->f_mapping;  in dax_iomap_pte_fault()  local
1701 	XA_STATE(xas, &mapping->i_pages, vmf->pgoff);  in dax_iomap_pte_fault()
1703 		.inode		= mapping->host,  in dax_iomap_pte_fault()
1726 	entry = grab_mapping_entry(&xas, mapping, 0);  in dax_iomap_pte_fault()
1810 	struct address_space *mapping = vmf->vma->vm_file->f_mapping;  in dax_iomap_pmd_fault()  local
1811 	XA_STATE_ORDER(xas, &mapping->i_pages, vmf->pgoff, PMD_ORDER);  in dax_iomap_pmd_fault()
1813 		.inode		= mapping->host,  in dax_iomap_pmd_fault()
1847 	entry = grab_mapping_entry(&xas, mapping, PMD_ORDER);  in dax_iomap_pmd_fault()
1931 	struct address_space *mapping = vmf->vma->vm_file->f_mapping;  in dax_insert_pfn_mkwrite()  local
1932 	XA_STATE_ORDER(xas, &mapping->i_pages, vmf->pgoff, order);  in dax_insert_pfn_mkwrite()
1943 		trace_dax_insert_pfn_mkwrite_no_entry(mapping->host, vmf,  in dax_insert_pfn_mkwrite()
1959 	trace_dax_insert_pfn_mkwrite(mapping->host, vmf, ret);  in dax_insert_pfn_mkwrite()