81 void do_invalidatepage(struct page *page, unsigned int offset,  in do_invalidatepage()  argument
84 	void (*invalidatepage)(struct page *, unsigned int, unsigned int);  in do_invalidatepage()
86 	invalidatepage = page->mapping->a_ops->invalidatepage;  in do_invalidatepage()
92 		(*invalidatepage)(page, offset, length);  in do_invalidatepage()
106 truncate_complete_page(struct address_space *mapping, struct page *page)  in truncate_complete_page()  argument
108 	if (page->mapping != mapping)  in truncate_complete_page()
111 	if (page_has_private(page))  in truncate_complete_page()
112 		do_invalidatepage(page, 0, PAGE_CACHE_SIZE);  in truncate_complete_page()
119 	if (TestClearPageDirty(page))  in truncate_complete_page()
120 		account_page_cleaned(page, mapping);  in truncate_complete_page()
122 	ClearPageMappedToDisk(page);  in truncate_complete_page()
123 	delete_from_page_cache(page);  in truncate_complete_page()
136 invalidate_complete_page(struct address_space *mapping, struct page *page)  in invalidate_complete_page()  argument
140 	if (page->mapping != mapping)  in invalidate_complete_page()
143 	if (page_has_private(page) && !try_to_release_page(page, 0))  in invalidate_complete_page()
146 	ret = remove_mapping(mapping, page);  in invalidate_complete_page()
151 int truncate_inode_page(struct address_space *mapping, struct page *page)  in truncate_inode_page()  argument
153 	if (page_mapped(page)) {  in truncate_inode_page()
155 				   (loff_t)page->index << PAGE_CACHE_SHIFT,  in truncate_inode_page()
158 	return truncate_complete_page(mapping, page);  in truncate_inode_page()
164 int generic_error_remove_page(struct address_space *mapping, struct page *page)  in generic_error_remove_page()  argument
174 	return truncate_inode_page(mapping, page);  in generic_error_remove_page()
184 int invalidate_inode_page(struct page *page)  in invalidate_inode_page()  argument
186 	struct address_space *mapping = page_mapping(page);  in invalidate_inode_page()
189 	if (PageDirty(page) || PageWriteback(page))  in invalidate_inode_page()
191 	if (page_mapped(page))  in invalidate_inode_page()
193 	return invalidate_complete_page(mapping, page);  in invalidate_inode_page()
263 			struct page *page = pvec.pages[i];  in truncate_inode_pages_range()  local
270 			if (radix_tree_exceptional_entry(page)) {  in truncate_inode_pages_range()
271 				clear_exceptional_entry(mapping, index, page);  in truncate_inode_pages_range()
275 			if (!trylock_page(page))  in truncate_inode_pages_range()
277 			WARN_ON(page->index != index);  in truncate_inode_pages_range()
278 			if (PageWriteback(page)) {  in truncate_inode_pages_range()
279 				unlock_page(page);  in truncate_inode_pages_range()
282 			truncate_inode_page(mapping, page);  in truncate_inode_pages_range()
283 			unlock_page(page);  in truncate_inode_pages_range()
292 		struct page *page = find_lock_page(mapping, start - 1);  in truncate_inode_pages_range()  local
293 		if (page) {  in truncate_inode_pages_range()
300 			wait_on_page_writeback(page);  in truncate_inode_pages_range()
301 			zero_user_segment(page, partial_start, top);  in truncate_inode_pages_range()
302 			cleancache_invalidate_page(mapping, page);  in truncate_inode_pages_range()
303 			if (page_has_private(page))  in truncate_inode_pages_range()
304 				do_invalidatepage(page, partial_start,  in truncate_inode_pages_range()
306 			unlock_page(page);  in truncate_inode_pages_range()
307 			page_cache_release(page);  in truncate_inode_pages_range()
311 		struct page *page = find_lock_page(mapping, end);  in truncate_inode_pages_range()  local
312 		if (page) {  in truncate_inode_pages_range()
313 			wait_on_page_writeback(page);  in truncate_inode_pages_range()
314 			zero_user_segment(page, 0, partial_end);  in truncate_inode_pages_range()
315 			cleancache_invalidate_page(mapping, page);  in truncate_inode_pages_range()
316 			if (page_has_private(page))  in truncate_inode_pages_range()
317 				do_invalidatepage(page, 0,  in truncate_inode_pages_range()
319 			unlock_page(page);  in truncate_inode_pages_range()
320 			page_cache_release(page);  in truncate_inode_pages_range()
349 			struct page *page = pvec.pages[i];  in truncate_inode_pages_range()  local
359 			if (radix_tree_exceptional_entry(page)) {  in truncate_inode_pages_range()
360 				clear_exceptional_entry(mapping, index, page);  in truncate_inode_pages_range()
364 			lock_page(page);  in truncate_inode_pages_range()
365 			WARN_ON(page->index != index);  in truncate_inode_pages_range()
366 			wait_on_page_writeback(page);  in truncate_inode_pages_range()
367 			truncate_inode_page(mapping, page);  in truncate_inode_pages_range()
368 			unlock_page(page);  in truncate_inode_pages_range()
471 			struct page *page = pvec.pages[i];  in invalidate_mapping_pages()  local
478 			if (radix_tree_exceptional_entry(page)) {  in invalidate_mapping_pages()
479 				clear_exceptional_entry(mapping, index, page);  in invalidate_mapping_pages()
483 			if (!trylock_page(page))  in invalidate_mapping_pages()
485 			WARN_ON(page->index != index);  in invalidate_mapping_pages()
486 			ret = invalidate_inode_page(page);  in invalidate_mapping_pages()
487 			unlock_page(page);  in invalidate_mapping_pages()
493 				deactivate_file_page(page);  in invalidate_mapping_pages()
513 invalidate_complete_page2(struct address_space *mapping, struct page *page)  in invalidate_complete_page2()  argument
515 	if (page->mapping != mapping)  in invalidate_complete_page2()
518 	if (page_has_private(page) && !try_to_release_page(page, GFP_KERNEL))  in invalidate_complete_page2()
522 	if (PageDirty(page))  in invalidate_complete_page2()
525 	BUG_ON(page_has_private(page));  in invalidate_complete_page2()
526 	__delete_from_page_cache(page, NULL);  in invalidate_complete_page2()
530 		mapping->a_ops->freepage(page);  in invalidate_complete_page2()
532 	page_cache_release(page);	/* pagecache ref */  in invalidate_complete_page2()
539 static int do_launder_page(struct address_space *mapping, struct page *page)  in do_launder_page()  argument
541 	if (!PageDirty(page))  in do_launder_page()
543 	if (page->mapping != mapping || mapping->a_ops->launder_page == NULL)  in do_launder_page()
545 	return mapping->a_ops->launder_page(page);  in do_launder_page()
577 			struct page *page = pvec.pages[i];  in invalidate_inode_pages2_range()  local
584 			if (radix_tree_exceptional_entry(page)) {  in invalidate_inode_pages2_range()
585 				clear_exceptional_entry(mapping, index, page);  in invalidate_inode_pages2_range()
589 			lock_page(page);  in invalidate_inode_pages2_range()
590 			WARN_ON(page->index != index);  in invalidate_inode_pages2_range()
591 			if (page->mapping != mapping) {  in invalidate_inode_pages2_range()
592 				unlock_page(page);  in invalidate_inode_pages2_range()
595 			wait_on_page_writeback(page);  in invalidate_inode_pages2_range()
596 			if (page_mapped(page)) {  in invalidate_inode_pages2_range()
616 			BUG_ON(page_mapped(page));  in invalidate_inode_pages2_range()
617 			ret2 = do_launder_page(mapping, page);  in invalidate_inode_pages2_range()
619 				if (!invalidate_complete_page2(mapping, page))  in invalidate_inode_pages2_range()
624 			unlock_page(page);  in invalidate_inode_pages2_range()
733 	struct page *page;  in pagecache_isize_extended()  local
746 	page = find_lock_page(inode->i_mapping, index);  in pagecache_isize_extended()
748 	if (!page)  in pagecache_isize_extended()
754 	if (page_mkclean(page))  in pagecache_isize_extended()
755 		set_page_dirty(page);  in pagecache_isize_extended()
756 	unlock_page(page);  in pagecache_isize_extended()
757 	page_cache_release(page);  in pagecache_isize_extended()