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btrfs: remove pointless loop at btrfs_get_next_valid_item()

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It's pointless to have a while loop at btrfs_get_next_valid_item(), as if
the slot on the current leaf is beyond the last item, we call
btrfs_next_leaf(), which leaves us at a valid slot of the next leaf (or
a valid slot in the current leaf if after releasing the path an item gets
pushed from the next leaf to the current leaf).

So just call btrfs_next_leaf() if the current slot on the current leaf is
beyond the last item.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2023-04-05 18:52:23 +01:00 committed by David Sterba
parent 604e6681e1
commit 524f14bb11
1 changed files with 6 additions and 17 deletions
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23
fs/btrfs/ctree.c
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@ -2490,26 +2490,15 @@ int btrfs_search_backwards(struct btrfs_root *root, struct btrfs_key *key,
int btrfs_get_next_valid_item(struct btrfs_root *root, struct btrfs_key *key,
struct btrfs_path *path)
{
while (1) {
if (path->slots[0] >= btrfs_header_nritems(path->nodes[0])) {
int ret;
const int slot = path->slots[0];
const struct extent_buffer *leaf = path->nodes[0];
/* This is where we start walking the path. */
if (slot >= btrfs_header_nritems(leaf)) {
/*
* If we've reached the last slot in this leaf we need
* to go to the next leaf and reset the path.
*/
ret = btrfs_next_leaf(root, path);
if (ret)
return ret;
continue;
}
/* Store the found, valid item in @key. */
btrfs_item_key_to_cpu(leaf, key, slot);
break;
ret = btrfs_next_leaf(root, path);
if (ret)
return ret;
}
btrfs_item_key_to_cpu(path->nodes[0], key, path->slots[0]);
return 0;
}