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btrfs: use btrfs_read_node_slot in do_relocation

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We're open coding btrfs_read_node_slot in do_relocation, replace this
with the proper 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 10:45:12 -05:00 committed by David Sterba
parent 8ef385bbf0
commit c975253682
1 changed files with 1 additions and 11 deletions
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12
fs/btrfs/relocation.c
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@ -2191,7 +2191,6 @@ static int do_relocation(struct btrfs_trans_handle *trans,
struct btrfs_key *key,
struct btrfs_path *path, int lowest)
{
struct btrfs_fs_info *fs_info = rc->extent_root->fs_info;
struct btrfs_backref_node *upper;
struct btrfs_backref_edge *edge;
struct btrfs_backref_edge *edges[BTRFS_MAX_LEVEL - 1];
@ -2199,7 +2198,6 @@ static int do_relocation(struct btrfs_trans_handle *trans,
struct extent_buffer *eb;
u32 blocksize;
u64 bytenr;
u64 generation;
int slot;
int ret;
int err = 0;
@ -2209,7 +2207,6 @@ static int do_relocation(struct btrfs_trans_handle *trans,
path->lowest_level = node->level + 1;
rc->backref_cache.path[node->level] = node;
list_for_each_entry(edge, &node->upper, list[LOWER]) {
struct btrfs_key first_key;
struct btrfs_ref ref = { 0 };
cond_resched();
@ -2282,17 +2279,10 @@ static int do_relocation(struct btrfs_trans_handle *trans,
}
blocksize = root->fs_info->nodesize;
generation = btrfs_node_ptr_generation(upper->eb, slot);
btrfs_node_key_to_cpu(upper->eb, &first_key, slot);
eb = read_tree_block(fs_info, bytenr, generation,
upper->level - 1, &first_key);
eb = btrfs_read_node_slot(upper->eb, slot);
if (IS_ERR(eb)) {
err = PTR_ERR(eb);
goto next;
} else if (!extent_buffer_uptodate(eb)) {
free_extent_buffer(eb);
err = -EIO;
goto next;
}
btrfs_tree_lock(eb);