static int walk_down_tree(struct btrfs_root *root, struct btrfs_path *path,
int level, u64 *bytenr, u64 *num_bytes)
{
- struct btrfs_fs_info *fs_info = root->fs_info;
struct extent_buffer *eb;
- u64 block_bytenr, gen;
int ret = 0;
while (level >= 0) {
if (level) {
- struct btrfs_key first_key;
-
- block_bytenr = btrfs_node_blockptr(path->nodes[level],
- path->slots[level]);
- gen = btrfs_node_ptr_generation(path->nodes[level],
- path->slots[level]);
- btrfs_node_key_to_cpu(path->nodes[level], &first_key,
- path->slots[level]);
- eb = read_tree_block(fs_info, block_bytenr, gen,
- level - 1, &first_key);
+ eb = btrfs_read_node_slot(path->nodes[level],
+ path->slots[level]);
if (IS_ERR(eb))
return PTR_ERR(eb);
- if (!extent_buffer_uptodate(eb)) {
- free_extent_buffer(eb);
- return -EIO;
- }
btrfs_tree_read_lock(eb);
- btrfs_set_lock_blocking_read(eb);
path->nodes[level-1] = eb;
path->slots[level-1] = 0;
- path->locks[level-1] = BTRFS_READ_LOCK_BLOCKING;
+ path->locks[level-1] = BTRFS_READ_LOCK;
} else {
ret = process_leaf(root, path, bytenr, num_bytes);
if (ret)
if (!be) {
btrfs_err(fs_info,
"trying to do action %d to bytenr %llu num_bytes %llu but there is no existing entry!",
- action, (unsigned long long)bytenr,
- (unsigned long long)num_bytes);
+ action, bytenr, num_bytes);
dump_ref_action(fs_info, ra);
kfree(ref);
kfree(ra);
return -ENOMEM;
eb = btrfs_read_lock_root_node(fs_info->extent_root);
- btrfs_set_lock_blocking_read(eb);
level = btrfs_header_level(eb);
path->nodes[level] = eb;
path->slots[level] = 0;
- path->locks[level] = BTRFS_READ_LOCK_BLOCKING;
+ path->locks[level] = BTRFS_READ_LOCK;
while (1) {
/*