fs/btrfs/inode.c

25 	struct btrfs_key key;
29 	key.objectid = ino;
30 	key.type = BTRFS_EXTENT_DATA_KEY;
31 	key.offset = 0;
34 	ret = btrfs_search_slot(NULL, root, &key, &path, 0, 0);
77 	struct btrfs_key key;
81 	key.objectid = rootid;
82 	key.type = BTRFS_ROOT_BACKREF_KEY;
83 	key.offset = (u64)-1;
85 	ret = btrfs_search_slot(NULL, root, &key, &path, 0, 0);
100 	btrfs_item_key_to_cpu(path.nodes[0], &key, path.slots[0]);
103 	*root_ret = key.offset;
124 	struct btrfs_key key;
142 		key.objectid = parent_root;
143 		key.type = BTRFS_ROOT_ITEM_KEY;
144 		key.offset = (u64)-1;
145 		*root_ret = btrfs_read_fs_root(fs_info, &key);
153 	key.objectid = ino;
154 	key.type = BTRFS_INODE_REF_KEY;
155 	key.offset = (u64)-1;
157 	ret = btrfs_search_slot(NULL, root, &key, &path, 0, 0);
172 	btrfs_item_key_to_cpu(path.nodes[0], &key, path.slots[0]);
174 	*ino_ret = key.offset;
209  * key_ret:	The child key (either INODE_ITEM or ROOT_ITEM type)
250 	struct btrfs_key key;
291 		ret = resolve_one_filename(root, ino, cur, len, &key, &type);
295 		if (key.type == BTRFS_ROOT_ITEM_KEY) {
298 			next_root = btrfs_read_fs_root(fs_info, &key);
315 			ret = btrfs_readlink(root, key.objectid, target);
332 			ino = key.objectid;
426 	struct btrfs_key key;
440 	btrfs_item_key_to_cpu(leaf, &key, slot);
444 	ASSERT(offset >= key.offset &&
445 	       offset + len <= key.offset + extent_num_bytes);
459 			  offset - key.offset;
515 	       dbuf + btrfs_file_extent_offset(leaf, fi) + offset - key.offset,
537 	struct btrfs_key key;
543 	key.objectid = ino;
544 	key.type = BTRFS_EXTENT_DATA_KEY;
545 	key.offset = file_offset;
547 	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
557 	/* Now the key.offset must be smaller than @file_offset */
558 	btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
559 	if (key.objectid != ino ||
560 	    key.type != BTRFS_EXTENT_DATA_KEY)
575 	if (key.offset <= file_offset && key.offset +
587 	btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
591 	if (key.objectid != ino ||
592 	    key.type != BTRFS_EXTENT_DATA_KEY) {
597 	if (key.offset > file_offset) {
598 		*next_offset = key.offset;
602 	if (key.offset <= file_offset && key.offset +
613 	btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
614 	if (key.type != BTRFS_EXTENT_DATA_KEY || key.objectid != ino) {
618 	*next_offset = key.offset;
666 	struct btrfs_key key;
730 		btrfs_item_key_to_cpu(path.nodes[0], &key, path.slots[0]);
739 			cur = key.offset + btrfs_file_extent_num_bytes(