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btrfs: use btrfs_read_node_slot in walk_down_tree

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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 10:45:14 -05:00 • committed by David Sterba
parent 6b3426be27
commit c990ada2a0
1 changed files with 2 additions and 16 deletions
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18
fs/btrfs/ref-verify.c
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@ -551,29 +551,15 @@ static int process_leaf(struct btrfs_root *root,
static int walk_down_tree(struct btrfs_root *root, struct btrfs_path *path, static int walk_down_tree(struct btrfs_root *root, struct btrfs_path *path,
int level, u64 *bytenr, u64 *num_bytes) int level, u64 *bytenr, u64 *num_bytes)
{ {
struct btrfs_fs_info *fs_info = root->fs_info;
struct extent_buffer *eb; struct extent_buffer *eb;
u64 block_bytenr, gen;
int ret = 0; int ret = 0;
while (level >= 0) { while (level >= 0) {
if (level) { if (level) {
struct btrfs_key first_key; eb = btrfs_read_node_slot(path->nodes[level],
path->slots[level]);
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);
if (IS_ERR(eb)) if (IS_ERR(eb))
return PTR_ERR(eb); return PTR_ERR(eb);
if (!extent_buffer_uptodate(eb)) {
free_extent_buffer(eb);
return -EIO;
}
btrfs_tree_read_lock(eb); btrfs_tree_read_lock(eb);
path->nodes[level-1] = eb; path->nodes[level-1] = eb;
path->slots[level-1] = 0; path->slots[level-1] = 0;