28 static inline void dir_put_page(struct page *page)  in dir_put_page()  argument
30 	kunmap(page);  in dir_put_page()
31 	page_cache_release(page);  in dir_put_page()
48 static int dir_commit_chunk(struct page *page, loff_t pos, unsigned len)  in dir_commit_chunk()  argument
50 	struct address_space *mapping = page->mapping;  in dir_commit_chunk()
53 	block_write_end(NULL, mapping, pos, len, len, page, NULL);  in dir_commit_chunk()
60 		err = write_one_page(page, 1);  in dir_commit_chunk()
62 		unlock_page(page);  in dir_commit_chunk()
66 static struct page * dir_get_page(struct inode *dir, unsigned long n)  in dir_get_page()
69 	struct page *page = read_mapping_page(mapping, n, NULL);  in dir_get_page()  local
70 	if (!IS_ERR(page))  in dir_get_page()
71 		kmap(page);  in dir_get_page()
72 	return page;  in dir_get_page()
100 		struct page *page = dir_get_page(inode, n);  in minix_readdir()  local
102 		if (IS_ERR(page))  in minix_readdir()
104 		kaddr = (char *)page_address(page);  in minix_readdir()
123 					dir_put_page(page);  in minix_readdir()
129 		dir_put_page(page);  in minix_readdir()
150 minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)  in minix_find_entry()
159 	struct page *page = NULL;  in minix_find_entry()  local
169 		page = dir_get_page(dir, n);  in minix_find_entry()
170 		if (IS_ERR(page))  in minix_find_entry()
173 		kaddr = (char*)page_address(page);  in minix_find_entry()
190 		dir_put_page(page);  in minix_find_entry()
195 	*res_page = page;  in minix_find_entry()
206 	struct page *page = NULL;  in minix_add_link()  local
225 		page = dir_get_page(dir, n);  in minix_add_link()
226 		err = PTR_ERR(page);  in minix_add_link()
227 		if (IS_ERR(page))  in minix_add_link()
229 		lock_page(page);  in minix_add_link()
230 		kaddr = (char*)page_address(page);  in minix_add_link()
257 		unlock_page(page);  in minix_add_link()
258 		dir_put_page(page);  in minix_add_link()
264 	pos = page_offset(page) + p - (char *)page_address(page);  in minix_add_link()
265 	err = minix_prepare_chunk(page, pos, sbi->s_dirsize);  in minix_add_link()
276 	err = dir_commit_chunk(page, pos, sbi->s_dirsize);  in minix_add_link()
280 	dir_put_page(page);  in minix_add_link()
284 	unlock_page(page);  in minix_add_link()
288 int minix_delete_entry(struct minix_dir_entry *de, struct page *page)  in minix_delete_entry()  argument
290 	struct inode *inode = page->mapping->host;  in minix_delete_entry()
291 	char *kaddr = page_address(page);  in minix_delete_entry()
292 	loff_t pos = page_offset(page) + (char*)de - kaddr;  in minix_delete_entry()
297 	lock_page(page);  in minix_delete_entry()
298 	err = minix_prepare_chunk(page, pos, len);  in minix_delete_entry()
304 		err = dir_commit_chunk(page, pos, len);  in minix_delete_entry()
306 		unlock_page(page);  in minix_delete_entry()
308 	dir_put_page(page);  in minix_delete_entry()
316 	struct page *page = grab_cache_page(inode->i_mapping, 0);  in minix_make_empty()  local
321 	if (!page)  in minix_make_empty()
323 	err = minix_prepare_chunk(page, 0, 2 * sbi->s_dirsize);  in minix_make_empty()
325 		unlock_page(page);  in minix_make_empty()
329 	kaddr = kmap_atomic(page);  in minix_make_empty()
351 	err = dir_commit_chunk(page, 0, 2 * sbi->s_dirsize);  in minix_make_empty()
353 	page_cache_release(page);  in minix_make_empty()
362 	struct page *page = NULL;  in minix_empty_dir()  local
371 		page = dir_get_page(inode, i);  in minix_empty_dir()
372 		if (IS_ERR(page))  in minix_empty_dir()
375 		kaddr = (char *)page_address(page);  in minix_empty_dir()
401 		dir_put_page(page);  in minix_empty_dir()
406 	dir_put_page(page);  in minix_empty_dir()
411 void minix_set_link(struct minix_dir_entry *de, struct page *page,  in minix_set_link()  argument
414 	struct inode *dir = page->mapping->host;  in minix_set_link()
416 	loff_t pos = page_offset(page) +  in minix_set_link()
417 			(char *)de-(char*)page_address(page);  in minix_set_link()
420 	lock_page(page);  in minix_set_link()
422 	err = minix_prepare_chunk(page, pos, sbi->s_dirsize);  in minix_set_link()
428 		err = dir_commit_chunk(page, pos, sbi->s_dirsize);  in minix_set_link()
430 		unlock_page(page);  in minix_set_link()
432 	dir_put_page(page);  in minix_set_link()
437 struct minix_dir_entry * minix_dotdot (struct inode *dir, struct page **p)  in minix_dotdot()
439 	struct page *page = dir_get_page(dir, 0);  in minix_dotdot()  local
443 	if (!IS_ERR(page)) {  in minix_dotdot()
444 		de = minix_next_entry(page_address(page), sbi);  in minix_dotdot()
445 		*p = page;  in minix_dotdot()
452 	struct page *page;  in minix_inode_by_name()  local
453 	struct minix_dir_entry *de = minix_find_entry(dentry, &page);  in minix_inode_by_name()
457 		struct address_space *mapping = page->mapping;  in minix_inode_by_name()
465 		dir_put_page(page);  in minix_inode_by_name()