66 static int write_dir(struct inode *dir, struct logfs_disk_dentry *dd,  in write_dir()  argument
69 	return logfs_inode_write(dir, dd, sizeof(*dd), pos, WF_LOCK, NULL);  in write_dir()
157 static struct page *logfs_get_dd_page(struct inode *dir, struct dentry *dentry)  in logfs_get_dd_page()  argument
172 		if (beyond_eof(dir, index))  in logfs_get_dd_page()
174 		if (!logfs_exist_block(dir, index))  in logfs_get_dd_page()
176 		page = read_cache_page(dir->i_mapping, index,  in logfs_get_dd_page()
213 static int logfs_unlink(struct inode *dir, struct dentry *dentry)  in logfs_unlink()  argument
215 	struct logfs_super *super = logfs_super(dir->i_sb);  in logfs_unlink()
229 	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;  in logfs_unlink()
231 	page = logfs_get_dd_page(dir, dentry);  in logfs_unlink()
244 	logfs_add_transaction(dir, ta);  in logfs_unlink()
246 	ret = logfs_delete(dir, index, NULL);  in logfs_unlink()
248 		ret = write_inode(dir);  in logfs_unlink()
251 		abort_transaction(dir, ta);  in logfs_unlink()
264 static inline int logfs_empty_dir(struct inode *dir)  in logfs_empty_dir()  argument
268 	data = logfs_seek_data(dir, 0) << dir->i_sb->s_blocksize_bits;  in logfs_empty_dir()
269 	return data >= i_size_read(dir);  in logfs_empty_dir()
272 static int logfs_rmdir(struct inode *dir, struct dentry *dentry)  in logfs_rmdir()  argument
279 	return logfs_unlink(dir, dentry);  in logfs_rmdir()
286 	struct inode *dir = file_inode(file);  in logfs_readdir()  local
301 		if (beyond_eof(dir, pos))  in logfs_readdir()
303 		if (!logfs_exist_block(dir, pos)) {  in logfs_readdir()
305 			pos = dir_seek_data(dir, pos);  in logfs_readdir()
308 		page = read_cache_page(dir->i_mapping, pos,  in logfs_readdir()
332 static struct dentry *logfs_lookup(struct inode *dir, struct dentry *dentry,  in logfs_lookup()  argument
341 	page = logfs_get_dd_page(dir, dentry);  in logfs_lookup()
354 	inode = logfs_iget(dir->i_sb, ino);  in logfs_lookup()
357 				ino, dir->i_ino, index);  in logfs_lookup()
361 static void grow_dir(struct inode *dir, loff_t index)  in grow_dir()  argument
363 	index = (index + 1) << dir->i_sb->s_blocksize_bits;  in grow_dir()
364 	if (i_size_read(dir) < index)  in grow_dir()
365 		i_size_write(dir, index);  in grow_dir()
368 static int logfs_write_dir(struct inode *dir, struct dentry *dentry,  in logfs_write_dir()  argument
380 		if (logfs_exist_block(dir, index))  in logfs_write_dir()
382 		page = find_or_create_page(dir->i_mapping, index, GFP_KERNEL);  in logfs_write_dir()
393 		err = logfs_write_buf(dir, page, WF_LOCK);  in logfs_write_dir()
397 			grow_dir(dir, index);  in logfs_write_dir()
407 static int __logfs_create(struct inode *dir, struct dentry *dentry,  in __logfs_create()  argument
410 	struct logfs_super *super = logfs_super(dir->i_sb);  in __logfs_create()
446 	logfs_add_transaction(dir, ta);  in __logfs_create()
447 	ret = logfs_write_dir(dir, dentry, inode);  in __logfs_create()
450 		ret = write_inode(dir);  in __logfs_create()
453 		logfs_del_transaction(dir, ta);  in __logfs_create()
466 static int logfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)  in logfs_mkdir()  argument
475 	inode = logfs_new_inode(dir, S_IFDIR | mode);  in logfs_mkdir()
482 	return __logfs_create(dir, dentry, inode, NULL, 0);  in logfs_mkdir()
485 static int logfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,  in logfs_create()  argument
490 	inode = logfs_new_inode(dir, mode);  in logfs_create()
498 	return __logfs_create(dir, dentry, inode, NULL, 0);  in logfs_create()
501 static int logfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,  in logfs_mknod()  argument
509 	inode = logfs_new_inode(dir, mode);  in logfs_mknod()
515 	return __logfs_create(dir, dentry, inode, NULL, 0);  in logfs_mknod()
518 static int logfs_symlink(struct inode *dir, struct dentry *dentry,  in logfs_symlink()  argument
524 	if (destlen > dir->i_sb->s_blocksize)  in logfs_symlink()
527 	inode = logfs_new_inode(dir, S_IFLNK | 0777);  in logfs_symlink()
534 	return __logfs_create(dir, dentry, inode, target, destlen);  in logfs_symlink()
537 static int logfs_link(struct dentry *old_dentry, struct inode *dir,  in logfs_link()  argument
542 	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;  in logfs_link()
547 	return __logfs_create(dir, dentry, inode, NULL, 0);  in logfs_link()
550 static int logfs_get_dd(struct inode *dir, struct dentry *dentry,  in logfs_get_dd()  argument
556 	page = logfs_get_dd_page(dir, dentry);  in logfs_get_dd()
567 static int logfs_delete_dd(struct inode *dir, loff_t pos)  in logfs_delete_dd()  argument
574 	BUG_ON(beyond_eof(dir, pos));  in logfs_delete_dd()
575 	dir->i_ctime = dir->i_mtime = CURRENT_TIME;  in logfs_delete_dd()
576 	log_dir(" Delete dentry (%lx, %llx)\n", dir->i_ino, pos);  in logfs_delete_dd()
577 	return logfs_delete(dir, pos, NULL);  in logfs_delete_dd()
604 	ta->dir = old_dir->i_ino;  in logfs_rename_cross()
633 static int logfs_replace_inode(struct inode *dir, struct dentry *dentry,  in logfs_replace_inode()  argument
639 	err = logfs_get_dd(dir, dentry, dd, &pos);  in logfs_replace_inode()
645 	err = write_dir(dir, dd, pos);  in logfs_replace_inode()
648 	log_dir("Replace dentry (%lx, %llx) %s -> %llx\n", dir->i_ino, pos,  in logfs_replace_inode()
650 	return write_inode(dir);  in logfs_replace_inode()
685 	ta->dir = old_dir->i_ino;  in logfs_rename_target()