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bcachefs: Fix btree_trans_peek_key_cache() BTREE_ITER_all_snapshots

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In BTREE_ITER_all_snapshots mode, we're required to only return keys
where the snapshot field matches the iterator position -
BTREE_ITER_filter_snapshots requires pulling keys into the key cache
from ancestor snapshots, so we have to check for that.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2024-12-12 02:26:15 -05:00
parent c50341be4e
commit 7e320a4063
1 changed files with 4 additions and 0 deletions
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4
fs/bcachefs/btree_iter.c
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@@ -2230,6 +2230,10 @@ struct bkey_s_c btree_trans_peek_key_cache(struct btree_iter *iter, struct bpos
k = bch2_btree_path_peek_slot(trans->paths + iter->key_cache_path, &u);
if (k.k && !bkey_err(k)) {
if ((iter->flags & BTREE_ITER_all_snapshots) &&
!bpos_eq(pos, k.k->p))
return bkey_s_c_null;
iter->k = u;
k.k = &iter->k;
}