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bcachefs: Set BTREE_NODE_SEQ() correctly in merge path

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BTREE_NODE_SEQ() is supposed to give us a time ordering of btree nodes
on disk, so that we can tell which btree node is newer if we ever have
to scan the entire device to find btree nodes.

The btree node merge path wasn't setting it correctly on the new node -
oops.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2022-02-22 17:16:45 -05:00 committed by Kent Overstreet
parent 5838c1702b
commit 6e44568cc3
1 changed files with 4 additions and 0 deletions
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4
fs/bcachefs/btree_update_interior.c
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@ -1697,6 +1697,10 @@ int __bch2_foreground_maybe_merge(struct btree_trans *trans,
n = bch2_btree_node_alloc(as, b->c.level);
bch2_btree_update_add_new_node(as, n);
SET_BTREE_NODE_SEQ(n->data,
max(BTREE_NODE_SEQ(b->data),
BTREE_NODE_SEQ(m->data)) + 1);
btree_set_min(n, prev->data->min_key);
btree_set_max(n, next->data->max_key);
n->data->format = new_f;