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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>
This commit is contained in:
Josef Bacik 2020-11-05 10:45:15 -05:00 committed by David Sterba
parent c990ada2a0
commit 6b2cb7cb95
1 changed files with 1 additions and 12 deletions
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13
fs/btrfs/qgroup.c
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@ -1942,27 +1942,16 @@ static int qgroup_trace_extent_swap(struct btrfs_trans_handle* trans,
struct btrfs_key dst_key; struct btrfs_key dst_key;
if (src_path->nodes[cur_level] == NULL) { if (src_path->nodes[cur_level] == NULL) {
struct btrfs_key first_key;
struct extent_buffer *eb; struct extent_buffer *eb;
int parent_slot; int parent_slot;
u64 child_gen;
u64 child_bytenr;
eb = src_path->nodes[cur_level + 1]; eb = src_path->nodes[cur_level + 1];
parent_slot = src_path->slots[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, eb = btrfs_read_node_slot(eb, parent_slot);
cur_level, &first_key);
if (IS_ERR(eb)) { if (IS_ERR(eb)) {
ret = PTR_ERR(eb); ret = PTR_ERR(eb);
goto out; goto out;
} else if (!extent_buffer_uptodate(eb)) {
free_extent_buffer(eb);
ret = -EIO;
goto out;
} }
src_path->nodes[cur_level] = eb; src_path->nodes[cur_level] = eb;