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btrfs: do not BUG_ON() when dropping inode items from log root

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When dropping inode items from a log tree at drop_inode_items(), we this
BUG_ON() on the result of btrfs_search_slot() because we don't expect an
exact match since having a key with an offset of (u64)-1 is unexpected.
That is generally true, but for dir index keys for example, we can get a
key with such an offset value, even though it's very unlikely and it would
take ages to increase the sequence counter for a dir index up to (u64)-1.
We can deal with an exact match, we just have to delete the key at that
slot, so there is really no need to BUG_ON(), error out or trigger any
warning. So remove the BUG_ON().

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2023-06-12 11:40:17 +01:00 committed by David Sterba
parent 7569141e8f
commit fc4026e26b
1 changed files with 6 additions and 6 deletions
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12
fs/btrfs/tree-log.c
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@ -4056,14 +4056,14 @@ static int drop_inode_items(struct btrfs_trans_handle *trans,
while (1) {
ret = btrfs_search_slot(trans, log, &key, path, -1, 1);
BUG_ON(ret == 0); /* Logic error */
if (ret < 0)
if (ret < 0) {
break;
} else if (ret > 0) {
if (path->slots[0] == 0)
break;
path->slots[0]--;
}
if (path->slots[0] == 0)
break;
path->slots[0]--;
btrfs_item_key_to_cpu(path->nodes[0], &found_key,
path->slots[0]);