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bcachefs: Change btree split threshold to be in u64s
This fixes a bug with very small btree nodes where splitting would end up with one of the new nodes empty. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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d98a5e3945
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2 changed files with 2 additions and 2 deletions
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@ -75,7 +75,7 @@ static inline unsigned btree_blocks(struct bch_fs *c)
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return c->opts.btree_node_size >> c->block_bits;
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return c->opts.btree_node_size >> c->block_bits;
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}
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}
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#define BTREE_SPLIT_THRESHOLD(c) (btree_blocks(c) * 3 / 4)
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#define BTREE_SPLIT_THRESHOLD(c) (btree_max_u64s(c) * 3 / 4)
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#define BTREE_FOREGROUND_MERGE_THRESHOLD(c) (btree_max_u64s(c) * 1 / 3)
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#define BTREE_FOREGROUND_MERGE_THRESHOLD(c) (btree_max_u64s(c) * 1 / 3)
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#define BTREE_FOREGROUND_MERGE_HYSTERESIS(c) \
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#define BTREE_FOREGROUND_MERGE_HYSTERESIS(c) \
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@ -1385,7 +1385,7 @@ static void btree_split(struct btree_update *as, struct btree *b,
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if (keys)
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if (keys)
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btree_split_insert_keys(as, n1, iter, keys);
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btree_split_insert_keys(as, n1, iter, keys);
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if (vstruct_blocks(n1->data, c->block_bits) > BTREE_SPLIT_THRESHOLD(c)) {
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if (bset_u64s(&n1->set[0]) > BTREE_SPLIT_THRESHOLD(c)) {
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trace_btree_split(c, b);
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trace_btree_split(c, b);
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n2 = __btree_split_node(as, n1, iter);
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n2 = __btree_split_node(as, n1, iter);
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