btrfs: use btrfs_read_node_slot in qgroup_trace_extent_swap
We're open-coding btrfs_read_node_slot() here, replace with the helper.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 78ffbad..db6165e 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1942,27 +1942,16 @@ static int qgroup_trace_extent_swap(struct btrfs_trans_handle* trans,
struct btrfs_key dst_key;
if (src_path->nodes[cur_level] == NULL) {
- struct btrfs_key first_key;
struct extent_buffer *eb;
int parent_slot;
- u64 child_gen;
- u64 child_bytenr;
eb = src_path->nodes[cur_level + 1];
parent_slot = src_path->slots[cur_level + 1];
- child_bytenr = btrfs_node_blockptr(eb, parent_slot);
- child_gen = btrfs_node_ptr_generation(eb, parent_slot);
- btrfs_node_key_to_cpu(eb, &first_key, parent_slot);
- eb = read_tree_block(fs_info, child_bytenr, child_gen,
- cur_level, &first_key);
+ eb = btrfs_read_node_slot(eb, parent_slot);
if (IS_ERR(eb)) {
ret = PTR_ERR(eb);
goto out;
- } else if (!extent_buffer_uptodate(eb)) {
- free_extent_buffer(eb);
- ret = -EIO;
- goto out;
}
src_path->nodes[cur_level] = eb;