23 static inline void dir_put_page(struct page *page)  in dir_put_page()  argument
25 	kunmap(page);  in dir_put_page()
26 	page_cache_release(page);  in dir_put_page()
34 static int dir_commit_chunk(struct page *page, unsigned from, unsigned to)  in dir_commit_chunk()  argument
36 	struct inode *dir = (struct inode *)page->mapping->host;  in dir_commit_chunk()
38 	page->mapping->a_ops->commit_write(NULL, page, from, to);  in dir_commit_chunk()
41 		err = writeout_one_page(page);  in dir_commit_chunk()
42 		err2 = waitfor_one_page(page);  in dir_commit_chunk()
49 static struct page * dir_get_page(struct inode *dir, unsigned long n)  in dir_get_page()
52 	struct page *page = read_cache_page(mapping, n,  in dir_get_page()  local
54 	if (!IS_ERR(page)) {  in dir_get_page()
55 		wait_on_page(page);  in dir_get_page()
56 		kmap(page);  in dir_get_page()
57 		if (!Page_Uptodate(page))  in dir_get_page()
60 	return page;  in dir_get_page()
63 	dir_put_page(page);  in dir_get_page()
89 		struct page *page = dir_get_page(inode, n);  in minix_readdir()  local
91 		if (IS_ERR(page))  in minix_readdir()
93 		kaddr = (char *)page_address(page);  in minix_readdir()
107 					dir_put_page(page);  in minix_readdir()
112 		dir_put_page(page);  in minix_readdir()
137 minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)  in minix_find_entry()
146 	struct page *page = NULL;  in minix_find_entry()  local
153 		page = dir_get_page(dir, n);  in minix_find_entry()
154 		if (IS_ERR(page))  in minix_find_entry()
157 		kaddr = (char*)page_address(page);  in minix_find_entry()
166 		dir_put_page(page);  in minix_find_entry()
171 	*res_page = page;  in minix_find_entry()
182 	struct page *page = NULL;  in minix_add_link()  local
192 		page = dir_get_page(dir, n);  in minix_add_link()
193 		err = PTR_ERR(page);  in minix_add_link()
194 		if (IS_ERR(page))  in minix_add_link()
196 		kaddr = (char*)page_address(page);  in minix_add_link()
207 		dir_put_page(page);  in minix_add_link()
213 	from = (char*)de - (char*)page_address(page);  in minix_add_link()
215 	lock_page(page);  in minix_add_link()
216 	err = page->mapping->a_ops->prepare_write(NULL, page, from, to);  in minix_add_link()
222 	err = dir_commit_chunk(page, from, to);  in minix_add_link()
226 	UnlockPage(page);  in minix_add_link()
228 	dir_put_page(page);  in minix_add_link()
233 int minix_delete_entry(struct minix_dir_entry *de, struct page *page)  in minix_delete_entry()  argument
235 	struct address_space *mapping = page->mapping;  in minix_delete_entry()
237 	char *kaddr = (char*)page_address(page);  in minix_delete_entry()
242 	lock_page(page);  in minix_delete_entry()
243 	err = mapping->a_ops->prepare_write(NULL, page, from, to);  in minix_delete_entry()
246 		err = dir_commit_chunk(page, from, to);  in minix_delete_entry()
248 	UnlockPage(page);  in minix_delete_entry()
249 	dir_put_page(page);  in minix_delete_entry()
258 	struct page *page = grab_cache_page(mapping, 0);  in minix_make_empty()  local
264 	if (!page)  in minix_make_empty()
266 	err = mapping->a_ops->prepare_write(NULL, page, 0, 2 * sbi->s_dirsize);  in minix_make_empty()
270 	base = (char*)page_address(page);  in minix_make_empty()
280 	err = dir_commit_chunk(page, 0, 2 * sbi->s_dirsize);  in minix_make_empty()
282 	UnlockPage(page);  in minix_make_empty()
283 	page_cache_release(page);  in minix_make_empty()
292 	struct page *page = NULL;  in minix_empty_dir()  local
299 		page = dir_get_page(inode, i);  in minix_empty_dir()
301 		if (IS_ERR(page))  in minix_empty_dir()
304 		kaddr = (char *)page_address(page);  in minix_empty_dir()
323 		dir_put_page(page);  in minix_empty_dir()
328 	dir_put_page(page);  in minix_empty_dir()
333 void minix_set_link(struct minix_dir_entry *de, struct page *page,  in minix_set_link()  argument
336 	struct inode *dir = (struct inode*)page->mapping->host;  in minix_set_link()
338 	unsigned from = (char *)de-(char*)page_address(page);  in minix_set_link()
342 	lock_page(page);  in minix_set_link()
343 	err = page->mapping->a_ops->prepare_write(NULL, page, from, to);  in minix_set_link()
346 		err = dir_commit_chunk(page, from, to);  in minix_set_link()
348 	UnlockPage(page);  in minix_set_link()
349 	dir_put_page(page);  in minix_set_link()
354 struct minix_dir_entry * minix_dotdot (struct inode *dir, struct page **p)  in minix_dotdot()
356 	struct page *page = dir_get_page(dir, 0);  in minix_dotdot()  local
360 	if (!IS_ERR(page)) {  in minix_dotdot()
361 		de = minix_next_entry(page_address(page), sbi);  in minix_dotdot()
362 		*p = page;  in minix_dotdot()
369 	struct page *page;  in minix_inode_by_name()  local
370 	struct minix_dir_entry *de = minix_find_entry(dentry, &page);  in minix_inode_by_name()
375 		dir_put_page(page);  in minix_inode_by_name()