21 unsigned long invalidate_mapping_pages(struct address_space *mapping,
30 int invalidate_inode_pages2(struct address_space *mapping);
31 int invalidate_inode_pages2_range(struct address_space *mapping,
35 int filemap_invalidate_pages(struct address_space *mapping,
41 int filemap_fdatawait_keep_errors(struct address_space *mapping);
43 int filemap_fdatawait_range_keep_errors(struct address_space *mapping,
48 static inline int filemap_fdatawait(struct address_space *mapping)  in filemap_fdatawait()  argument
50 	return filemap_fdatawait_range(mapping, 0, LLONG_MAX);  in filemap_fdatawait()
54 int filemap_write_and_wait_range(struct address_space *mapping,
56 int __filemap_fdatawrite_range(struct address_space *mapping,
58 int filemap_fdatawrite_range(struct address_space *mapping,
60 int filemap_check_errors(struct address_space *mapping);
61 void __filemap_set_wb_err(struct address_space *mapping, int err);
62 int filemap_fdatawrite_wbc(struct address_space *mapping,
66 static inline int filemap_write_and_wait(struct address_space *mapping)  in filemap_write_and_wait()  argument
68 	return filemap_write_and_wait_range(mapping, 0, LLONG_MAX);  in filemap_write_and_wait()
73  * @mapping: mapping in which to set writeback error
74  * @err: error to be set in mapping
82  * filemap_set_wb_err to record the error in the mapping so that it will be
85 static inline void filemap_set_wb_err(struct address_space *mapping, int err)  in filemap_set_wb_err()  argument
89 		__filemap_set_wb_err(mapping, err);  in filemap_set_wb_err()
94  * @mapping: mapping to check for writeback errors
97  * Grab the errseq_t value from the mapping, and see if it has changed "since"
102 static inline int filemap_check_wb_err(struct address_space *mapping,  in filemap_check_wb_err()  argument
105 	return errseq_check(&mapping->wb_err, since);  in filemap_check_wb_err()
110  * @mapping: mapping to be sampled
115 static inline errseq_t filemap_sample_wb_err(struct address_space *mapping)  in filemap_sample_wb_err()  argument
117 	return errseq_sample(&mapping->wb_err);  in filemap_sample_wb_err()
143 static inline bool mapping_empty(struct address_space *mapping)  in mapping_empty()  argument
145 	return xa_empty(&mapping->i_pages);  in mapping_empty()
150  * @mapping: the page cache mapping
152  * This checks the mapping's cache state for the pupose of inode
169 static inline bool mapping_shrinkable(struct address_space *mapping)  in mapping_shrinkable()  argument
182 	head = rcu_access_pointer(mapping->i_pages.xa_head);  in mapping_shrinkable()
199  * Bits in mapping->flags.
212 	AS_INACCESSIBLE = 8,	/* Do not attempt direct R/W access to the mapping */
226  * @mapping: the mapping in which an error should be set
227  * @error: the error to set in the mapping
235  * mapping_set_error to record the error in the mapping so that it can be
238 static inline void mapping_set_error(struct address_space *mapping, int error)  in mapping_set_error()  argument
244 	__filemap_set_wb_err(mapping, error);  in mapping_set_error()
247 	if (mapping->host)  in mapping_set_error()
248 		errseq_set(&mapping->host->i_sb->s_wb_err, error);  in mapping_set_error()
252 		set_bit(AS_ENOSPC, &mapping->flags);  in mapping_set_error()
254 		set_bit(AS_EIO, &mapping->flags);  in mapping_set_error()
257 static inline void mapping_set_unevictable(struct address_space *mapping)  in mapping_set_unevictable()  argument
259 	set_bit(AS_UNEVICTABLE, &mapping->flags);  in mapping_set_unevictable()
262 static inline void mapping_clear_unevictable(struct address_space *mapping)  in mapping_clear_unevictable()  argument
264 	clear_bit(AS_UNEVICTABLE, &mapping->flags);  in mapping_clear_unevictable()
267 static inline bool mapping_unevictable(struct address_space *mapping)  in mapping_unevictable()  argument
269 	return mapping && test_bit(AS_UNEVICTABLE, &mapping->flags);  in mapping_unevictable()
272 static inline void mapping_set_exiting(struct address_space *mapping)  in mapping_set_exiting()  argument
274 	set_bit(AS_EXITING, &mapping->flags);  in mapping_set_exiting()
277 static inline int mapping_exiting(struct address_space *mapping)  in mapping_exiting()  argument
279 	return test_bit(AS_EXITING, &mapping->flags);  in mapping_exiting()
282 static inline void mapping_set_no_writeback_tags(struct address_space *mapping)  in mapping_set_no_writeback_tags()  argument
284 	set_bit(AS_NO_WRITEBACK_TAGS, &mapping->flags);  in mapping_set_no_writeback_tags()
287 static inline int mapping_use_writeback_tags(struct address_space *mapping)  in mapping_use_writeback_tags()  argument
289 	return !test_bit(AS_NO_WRITEBACK_TAGS, &mapping->flags);  in mapping_use_writeback_tags()
292 static inline bool mapping_release_always(const struct address_space *mapping)  in mapping_release_always()  argument
294 	return test_bit(AS_RELEASE_ALWAYS, &mapping->flags);  in mapping_release_always()
297 static inline void mapping_set_release_always(struct address_space *mapping)  in mapping_set_release_always()  argument
299 	set_bit(AS_RELEASE_ALWAYS, &mapping->flags);  in mapping_set_release_always()
302 static inline void mapping_clear_release_always(struct address_space *mapping)  in mapping_clear_release_always()  argument
304 	clear_bit(AS_RELEASE_ALWAYS, &mapping->flags);  in mapping_clear_release_always()
307 static inline bool mapping_stable_writes(const struct address_space *mapping)  in mapping_stable_writes()  argument
309 	return test_bit(AS_STABLE_WRITES, &mapping->flags);  in mapping_stable_writes()
312 static inline void mapping_set_stable_writes(struct address_space *mapping)  in mapping_set_stable_writes()  argument
314 	set_bit(AS_STABLE_WRITES, &mapping->flags);  in mapping_set_stable_writes()
317 static inline void mapping_clear_stable_writes(struct address_space *mapping)  in mapping_clear_stable_writes()  argument
319 	clear_bit(AS_STABLE_WRITES, &mapping->flags);  in mapping_clear_stable_writes()
322 static inline void mapping_set_inaccessible(struct address_space *mapping)  in mapping_set_inaccessible()  argument
329 	set_bit(AS_UNEVICTABLE, &mapping->flags);  in mapping_set_inaccessible()
330 	set_bit(AS_INACCESSIBLE, &mapping->flags);  in mapping_set_inaccessible()
333 static inline bool mapping_inaccessible(struct address_space *mapping)  in mapping_inaccessible()  argument
335 	return test_bit(AS_INACCESSIBLE, &mapping->flags);  in mapping_inaccessible()
338 static inline gfp_t mapping_gfp_mask(struct address_space * mapping)  in mapping_gfp_mask()  argument
340 	return mapping->gfp_mask;  in mapping_gfp_mask()
343 /* Restricts the given gfp_mask to what the mapping allows. */
344 static inline gfp_t mapping_gfp_constraint(struct address_space *mapping,  in mapping_gfp_constraint()  argument
347 	return mapping_gfp_mask(mapping) & gfp_mask;  in mapping_gfp_constraint()
351  * This is non-atomic.  Only to be used before the mapping is activated.
383  * requirement on the folio mapping size in the page cache.
394  * @mapping: The address space of the file.
408 static inline void mapping_set_folio_order_range(struct address_space *mapping,  in mapping_set_folio_order_range()  argument
424 	mapping->flags = (mapping->flags & ~AS_FOLIO_ORDER_MASK) |  in mapping_set_folio_order_range()
428 static inline void mapping_set_folio_min_order(struct address_space *mapping,  in mapping_set_folio_min_order()  argument
431 	mapping_set_folio_order_range(mapping, min, MAX_PAGECACHE_ORDER);  in mapping_set_folio_min_order()
436  * @mapping: The address space of the file.
445 static inline void mapping_set_large_folios(struct address_space *mapping)  in mapping_set_large_folios()  argument
447 	mapping_set_folio_order_range(mapping, 0, MAX_PAGECACHE_ORDER);  in mapping_set_large_folios()
451 mapping_max_folio_order(const struct address_space *mapping)  in mapping_max_folio_order()  argument
455 	return (mapping->flags & AS_FOLIO_ORDER_MAX_MASK) >> AS_FOLIO_ORDER_MAX;  in mapping_max_folio_order()
459 mapping_min_folio_order(const struct address_space *mapping)  in mapping_min_folio_order()  argument
463 	return (mapping->flags & AS_FOLIO_ORDER_MIN_MASK) >> AS_FOLIO_ORDER_MIN;  in mapping_min_folio_order()
467 mapping_min_folio_nrpages(struct address_space *mapping)  in mapping_min_folio_nrpages()  argument
469 	return 1UL << mapping_min_folio_order(mapping);  in mapping_min_folio_nrpages()
473  * mapping_align_index() - Align index for this mapping.
474  * @mapping: The address_space.
481 static inline pgoff_t mapping_align_index(struct address_space *mapping,  in mapping_align_index()  argument
484 	return round_down(index, mapping_min_folio_nrpages(mapping));  in mapping_align_index()
491 static inline bool mapping_large_folio_support(struct address_space *mapping)  in mapping_large_folio_support()  argument
494 	VM_WARN_ONCE((unsigned long)mapping & PAGE_MAPPING_ANON,  in mapping_large_folio_support()
495 			"Anonymous mapping always supports large folio");  in mapping_large_folio_support()
497 	return mapping_max_folio_order(mapping) > 0;  in mapping_large_folio_support()
500 /* Return the maximum folio size for this pagecache mapping, in bytes. */
501 static inline size_t mapping_max_folio_size(const struct address_space *mapping)  in mapping_max_folio_size()  argument
503 	return PAGE_SIZE << mapping_max_folio_order(mapping);  in mapping_max_folio_size()
506 static inline int filemap_nr_thps(struct address_space *mapping)  in filemap_nr_thps()  argument
509 	return atomic_read(&mapping->nr_thps);  in filemap_nr_thps()
515 static inline void filemap_nr_thps_inc(struct address_space *mapping)  in filemap_nr_thps_inc()  argument
518 	if (!mapping_large_folio_support(mapping))  in filemap_nr_thps_inc()
519 		atomic_inc(&mapping->nr_thps);  in filemap_nr_thps_inc()
521 	WARN_ON_ONCE(mapping_large_folio_support(mapping) == 0);  in filemap_nr_thps_inc()
525 static inline void filemap_nr_thps_dec(struct address_space *mapping)  in filemap_nr_thps_dec()  argument
528 	if (!mapping_large_folio_support(mapping))  in filemap_nr_thps_dec()
529 		atomic_dec(&mapping->nr_thps);  in filemap_nr_thps_dec()
531 	WARN_ON_ONCE(mapping_large_folio_support(mapping) == 0);  in filemap_nr_thps_dec()
539  * folio_file_mapping - Find the mapping this folio belongs to.
542  * For folios which are in the page cache, return the mapping that this
543  * page belongs to.  Folios in the swap cache return the mapping of the
545  * from the mapping returned by folio_mapping().  The only reason to
555 	return folio->mapping;  in folio_file_mapping()
559  * folio_flush_mapping - Find the file mapping this folio belongs to.
562  * For folios which are in the page cache, return the mapping that this
594 	return folio->mapping->host;  in folio_inode()
687 pgoff_t page_cache_next_miss(struct address_space *mapping,
689 pgoff_t page_cache_prev_miss(struct address_space *mapping,
750 void *filemap_get_entry(struct address_space *mapping, pgoff_t index);
751 struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index,
753 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
758  * @mapping: The address_space to search.
761  * Looks up the page cache entry at @mapping & @index.  If a folio is
767 static inline struct folio *filemap_get_folio(struct address_space *mapping,  in filemap_get_folio()  argument
770 	return __filemap_get_folio(mapping, index, 0, 0);  in filemap_get_folio()
775  * @mapping: The address_space to search.
778  * Looks up the page cache entry at @mapping & @index.  If a folio is
785 static inline struct folio *filemap_lock_folio(struct address_space *mapping,  in filemap_lock_folio()  argument
788 	return __filemap_get_folio(mapping, index, FGP_LOCK, 0);  in filemap_lock_folio()
793  * @mapping: The address space to search
796  * Looks up the page cache entry at @mapping & @index. If no folio is found,
803 static inline struct folio *filemap_grab_folio(struct address_space *mapping,  in filemap_grab_folio()  argument
806 	return __filemap_get_folio(mapping, index,  in filemap_grab_folio()
808 			mapping_gfp_mask(mapping));  in filemap_grab_folio()
813  * @mapping: the address_space to search
816  * Looks up the page cache slot at @mapping & @offset.  If there is a
821 static inline struct page *find_get_page(struct address_space *mapping,  in find_get_page()  argument
824 	return pagecache_get_page(mapping, offset, 0, 0);  in find_get_page()
827 static inline struct page *find_get_page_flags(struct address_space *mapping,  in find_get_page_flags()  argument
830 	return pagecache_get_page(mapping, offset, fgp_flags, 0);  in find_get_page_flags()
835  * @mapping: the address_space to search
838  * Looks up the page cache entry at @mapping & @index.  If there is a
846 static inline struct page *find_lock_page(struct address_space *mapping,  in find_lock_page()  argument
849 	return pagecache_get_page(mapping, index, FGP_LOCK, 0);  in find_lock_page()
854  * @mapping: the page's address_space
855  * @index: the page's index into the mapping
858  * Looks up the page cache slot at @mapping & @offset.  If there is a
871 static inline struct page *find_or_create_page(struct address_space *mapping,  in find_or_create_page()  argument
874 	return pagecache_get_page(mapping, index,  in find_or_create_page()
881  * @mapping: target address_space
892 static inline struct page *grab_cache_page_nowait(struct address_space *mapping,  in grab_cache_page_nowait()  argument
895 	return pagecache_get_page(mapping, index,  in grab_cache_page_nowait()
897 			mapping_gfp_mask(mapping));  in grab_cache_page_nowait()
974 unsigned filemap_get_folios(struct address_space *mapping, pgoff_t *start,
976 unsigned filemap_get_folios_contig(struct address_space *mapping,
978 unsigned filemap_get_folios_tag(struct address_space *mapping, pgoff_t *start,
981 struct page *grab_cache_page_write_begin(struct address_space *mapping,
987 static inline struct page *grab_cache_page(struct address_space *mapping,  in grab_cache_page()  argument
990 	return find_or_create_page(mapping, index, mapping_gfp_mask(mapping));  in grab_cache_page()
999 extern struct page * read_cache_page_gfp(struct address_space *mapping,
1002 static inline struct page *read_mapping_page(struct address_space *mapping,  in read_mapping_page()  argument
1005 	return read_cache_page(mapping, index, NULL, file);  in read_mapping_page()
1008 static inline struct folio *read_mapping_folio(struct address_space *mapping,  in read_mapping_folio()  argument
1011 	return read_cache_folio(mapping, index, NULL, file);  in read_mapping_folio()
1130  * is sufficient to keep folio->mapping stable.
1258 bool noop_dirty_folio(struct address_space *mapping, struct folio *folio);
1261 int filemap_migrate_folio(struct address_space *mapping, struct folio *dst,
1283 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
1285 int filemap_add_folio(struct address_space *mapping, struct folio *folio,
1290 void delete_from_page_cache_batch(struct address_space *mapping,
1297 int __filemap_add_folio(struct address_space *mapping, struct folio *folio,
1300 bool filemap_range_has_writeback(struct address_space *mapping,
1305  * @mapping:           address space within which to check
1317 static inline bool filemap_range_needs_writeback(struct address_space *mapping,  in filemap_range_needs_writeback()  argument
1321 	if (!mapping->nrpages)  in filemap_range_needs_writeback()
1323 	if (!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY) &&  in filemap_range_needs_writeback()
1324 	    !mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))  in filemap_range_needs_writeback()
1326 	return filemap_range_has_writeback(mapping, start_byte, end_byte);  in filemap_range_needs_writeback()
1342  * @mapping: Readahead this filesystem object.
1347 	struct address_space *mapping;  member
1360 		.mapping = m,						\
1377  * @mapping: address_space which holds the pagecache and I/O vectors
1389 void page_cache_sync_readahead(struct address_space *mapping,  in page_cache_sync_readahead()  argument
1393 	DEFINE_READAHEAD(ractl, file, ra, mapping, index);  in page_cache_sync_readahead()
1399  * @mapping: address_space which holds the pagecache and I/O vectors
1411 void page_cache_async_readahead(struct address_space *mapping,  in page_cache_async_readahead()  argument
1415 	DEFINE_READAHEAD(ractl, file, ra, mapping, folio->index);  in page_cache_async_readahead()
1432 	folio = xa_load(&ractl->mapping->i_pages, ractl->_index);  in __readahead_folio()
1476 	XA_STATE(xas, &rac->mapping->i_pages, 0);  in __readahead_batch()
1581 	if (!folio->mapping)  in folio_mkwrite_check_truncate()
1609 	if (page->mapping != inode->i_mapping)  in page_mkwrite_check_truncate()