31 static void dir_commit_chunk(struct page *page, loff_t pos, unsigned len)  in dir_commit_chunk()  argument
33 	struct address_space *mapping = page->mapping;  in dir_commit_chunk()
36 	block_write_end(NULL, mapping, pos, len, len, page, NULL);  in dir_commit_chunk()
41 	unlock_page(page);  in dir_commit_chunk()
61 static void *dir_get_page(struct inode *dir, unsigned long n, struct page **p)  in dir_get_page()
64 	struct page *page = read_mapping_page(mapping, n, NULL);  in dir_get_page()  local
65 	if (IS_ERR(page))  in dir_get_page()
66 		return ERR_CAST(page);  in dir_get_page()
67 	*p = page;  in dir_get_page()
68 	return kmap_local_page(page);  in dir_get_page()
90 		struct page *page;  in sysv_readdir()  local
92 		kaddr = dir_get_page(inode, n, &page);  in sysv_readdir()
106 				unmap_and_put_page(page, kaddr);  in sysv_readdir()
110 		unmap_and_put_page(page, kaddr);  in sysv_readdir()
139 struct sysv_dir_entry *sysv_find_entry(struct dentry *dentry, struct page **res_page)  in sysv_find_entry()
146 	struct page *page = NULL;  in sysv_find_entry()  local
157 		char *kaddr = dir_get_page(dir, n, &page);  in sysv_find_entry()
169 			unmap_and_put_page(page, kaddr);  in sysv_find_entry()
180 	*res_page = page;  in sysv_find_entry()
189 	struct page *page = NULL;  in sysv_add_link()  local
199 		kaddr = dir_get_page(dir, n, &page);  in sysv_add_link()
212 		unmap_and_put_page(page, kaddr);  in sysv_add_link()
218 	pos = page_offset(page) + offset_in_page(de);  in sysv_add_link()
219 	lock_page(page);  in sysv_add_link()
220 	err = sysv_prepare_chunk(page, pos, SYSV_DIRSIZE);  in sysv_add_link()
226 	dir_commit_chunk(page, pos, SYSV_DIRSIZE);  in sysv_add_link()
231 	unmap_and_put_page(page, kaddr);  in sysv_add_link()
234 	unlock_page(page);  in sysv_add_link()
238 int sysv_delete_entry(struct sysv_dir_entry *de, struct page *page)  in sysv_delete_entry()  argument
240 	struct inode *inode = page->mapping->host;  in sysv_delete_entry()
241 	loff_t pos = page_offset(page) + offset_in_page(de);  in sysv_delete_entry()
244 	lock_page(page);  in sysv_delete_entry()
245 	err = sysv_prepare_chunk(page, pos, SYSV_DIRSIZE);  in sysv_delete_entry()
247 		unlock_page(page);  in sysv_delete_entry()
251 	dir_commit_chunk(page, pos, SYSV_DIRSIZE);  in sysv_delete_entry()
259 	struct page *page = grab_cache_page(inode->i_mapping, 0);  in sysv_make_empty()  local
264 	if (!page)  in sysv_make_empty()
266 	err = sysv_prepare_chunk(page, 0, 2 * SYSV_DIRSIZE);  in sysv_make_empty()
268 		unlock_page(page);  in sysv_make_empty()
271 	base = kmap_local_page(page);  in sysv_make_empty()
282 	dir_commit_chunk(page, 0, 2 * SYSV_DIRSIZE);  in sysv_make_empty()
285 	put_page(page);  in sysv_make_empty()
295 	struct page *page = NULL;  in sysv_empty_dir()  local
302 		kaddr = dir_get_page(inode, i, &page);  in sysv_empty_dir()
324 		unmap_and_put_page(page, kaddr);  in sysv_empty_dir()
329 	unmap_and_put_page(page, kaddr);  in sysv_empty_dir()
334 int sysv_set_link(struct sysv_dir_entry *de, struct page *page,  in sysv_set_link()  argument
337 	struct inode *dir = page->mapping->host;  in sysv_set_link()
338 	loff_t pos = page_offset(page) + offset_in_page(de);  in sysv_set_link()
341 	lock_page(page);  in sysv_set_link()
342 	err = sysv_prepare_chunk(page, pos, SYSV_DIRSIZE);  in sysv_set_link()
344 		unlock_page(page);  in sysv_set_link()
348 	dir_commit_chunk(page, pos, SYSV_DIRSIZE);  in sysv_set_link()
361 struct sysv_dir_entry *sysv_dotdot(struct inode *dir, struct page **p)  in sysv_dotdot()
373 	struct page *page;  in sysv_inode_by_name()  local
374 	struct sysv_dir_entry *de = sysv_find_entry (dentry, &page);  in sysv_inode_by_name()
379 		unmap_and_put_page(page, de);  in sysv_inode_by_name()