67 static inline void ext2_put_page(struct page *page)  in ext2_put_page()  argument
69 	kunmap(page);  in ext2_put_page()
70 	page_cache_release(page);  in ext2_put_page()
88 static int ext2_commit_chunk(struct page *page, loff_t pos, unsigned len)  in ext2_commit_chunk()  argument
90 	struct address_space *mapping = page->mapping;  in ext2_commit_chunk()
95 	block_write_end(NULL, mapping, pos, len, len, page, NULL);  in ext2_commit_chunk()
103 		err = write_one_page(page, 1);  in ext2_commit_chunk()
107 		unlock_page(page);  in ext2_commit_chunk()
113 static void ext2_check_page(struct page *page, int quiet)  in ext2_check_page()  argument
115 	struct inode *dir = page->mapping->host;  in ext2_check_page()
118 	char *kaddr = page_address(page);  in ext2_check_page()
125 	if ((dir->i_size >> PAGE_CACHE_SHIFT) == page->index) {  in ext2_check_page()
150 	SetPageChecked(page);  in ext2_check_page()
179 			dir->i_ino, error, (page->index<<PAGE_CACHE_SHIFT)+offs,  in ext2_check_page()
189 			dir->i_ino, (page->index<<PAGE_CACHE_SHIFT)+offs,  in ext2_check_page()
193 	SetPageChecked(page);  in ext2_check_page()
194 	SetPageError(page);  in ext2_check_page()
197 static struct page * ext2_get_page(struct inode *dir, unsigned long n,  in ext2_get_page()
201 	struct page *page = read_mapping_page(mapping, n, NULL);  in ext2_get_page()  local
202 	if (!IS_ERR(page)) {  in ext2_get_page()
203 		kmap(page);  in ext2_get_page()
204 		if (!PageChecked(page))  in ext2_get_page()
205 			ext2_check_page(page, quiet);  in ext2_get_page()
206 		if (PageError(page))  in ext2_get_page()
209 	return page;  in ext2_get_page()
212 	ext2_put_page(page);  in ext2_get_page()
306 		struct page *page = ext2_get_page(inode, n, 0);  in ext2_readdir()  local
308 		if (IS_ERR(page)) {  in ext2_readdir()
313 			return PTR_ERR(page);  in ext2_readdir()
315 		kaddr = page_address(page);  in ext2_readdir()
330 				ext2_put_page(page);  in ext2_readdir()
342 					ext2_put_page(page);  in ext2_readdir()
348 		ext2_put_page(page);  in ext2_readdir()
362 			struct qstr *child, struct page ** res_page)  in ext2_find_entry()
369 	struct page *page = NULL;  in ext2_find_entry()  local
386 		page = ext2_get_page(dir, n, dir_has_error);  in ext2_find_entry()
387 		if (!IS_ERR(page)) {  in ext2_find_entry()
388 			kaddr = page_address(page);  in ext2_find_entry()
395 					ext2_put_page(page);  in ext2_find_entry()
402 			ext2_put_page(page);  in ext2_find_entry()
421 	*res_page = page;  in ext2_find_entry()
426 struct ext2_dir_entry_2 * ext2_dotdot (struct inode *dir, struct page **p)  in ext2_dotdot()
428 	struct page *page = ext2_get_page(dir, 0, 0);  in ext2_dotdot()  local
431 	if (!IS_ERR(page)) {  in ext2_dotdot()
432 		de = ext2_next_entry((ext2_dirent *) page_address(page));  in ext2_dotdot()
433 		*p = page;  in ext2_dotdot()
442 	struct page *page;  in ext2_inode_by_name()  local
444 	de = ext2_find_entry (dir, child, &page);  in ext2_inode_by_name()
447 		ext2_put_page(page);  in ext2_inode_by_name()
452 static int ext2_prepare_chunk(struct page *page, loff_t pos, unsigned len)  in ext2_prepare_chunk()  argument
454 	return __block_write_begin(page, pos, len, ext2_get_block);  in ext2_prepare_chunk()
459 		   struct page *page, struct inode *inode, int update_times)  in ext2_set_link()  argument
461 	loff_t pos = page_offset(page) +  in ext2_set_link()
462 			(char *) de - (char *) page_address(page);  in ext2_set_link()
466 	lock_page(page);  in ext2_set_link()
467 	err = ext2_prepare_chunk(page, pos, len);  in ext2_set_link()
471 	err = ext2_commit_chunk(page, pos, len);  in ext2_set_link()
472 	ext2_put_page(page);  in ext2_set_link()
490 	struct page *page = NULL;  in ext2_add_link()  local
506 		page = ext2_get_page(dir, n, 0);  in ext2_add_link()
507 		err = PTR_ERR(page);  in ext2_add_link()
508 		if (IS_ERR(page))  in ext2_add_link()
510 		lock_page(page);  in ext2_add_link()
511 		kaddr = page_address(page);  in ext2_add_link()
541 		unlock_page(page);  in ext2_add_link()
542 		ext2_put_page(page);  in ext2_add_link()
548 	pos = page_offset(page) +  in ext2_add_link()
549 		(char*)de - (char*)page_address(page);  in ext2_add_link()
550 	err = ext2_prepare_chunk(page, pos, rec_len);  in ext2_add_link()
563 	err = ext2_commit_chunk(page, pos, rec_len);  in ext2_add_link()
569 	ext2_put_page(page);  in ext2_add_link()
573 	unlock_page(page);  in ext2_add_link()
581 int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )  in ext2_delete_entry()  argument
583 	struct inode *inode = page->mapping->host;  in ext2_delete_entry()
584 	char *kaddr = page_address(page);  in ext2_delete_entry()
604 		from = (char*)pde - (char*)page_address(page);  in ext2_delete_entry()
605 	pos = page_offset(page) + from;  in ext2_delete_entry()
606 	lock_page(page);  in ext2_delete_entry()
607 	err = ext2_prepare_chunk(page, pos, to - from);  in ext2_delete_entry()
612 	err = ext2_commit_chunk(page, pos, to - from);  in ext2_delete_entry()
617 	ext2_put_page(page);  in ext2_delete_entry()
626 	struct page *page = grab_cache_page(inode->i_mapping, 0);  in ext2_make_empty()  local
632 	if (!page)  in ext2_make_empty()
635 	err = ext2_prepare_chunk(page, 0, chunk_size);  in ext2_make_empty()
637 		unlock_page(page);  in ext2_make_empty()
640 	kaddr = kmap_atomic(page);  in ext2_make_empty()
656 	err = ext2_commit_chunk(page, 0, chunk_size);  in ext2_make_empty()
658 	page_cache_release(page);  in ext2_make_empty()
667 	struct page *page = NULL;  in ext2_empty_dir()  local
674 		page = ext2_get_page(inode, i, dir_has_error);  in ext2_empty_dir()
676 		if (IS_ERR(page)) {  in ext2_empty_dir()
681 		kaddr = page_address(page);  in ext2_empty_dir()
707 		ext2_put_page(page);  in ext2_empty_dir()
712 	ext2_put_page(page);  in ext2_empty_dir()