tree 413eb321e97d3184f68716c8df8a4eef9c1e5b44
parent ab158fce47220df20f0fe2360767227328f6765b
author Kent Overstreet <kent.overstreet@linux.dev> 1682789058 -0400
committer Kent Overstreet <kent.overstreet@linux.dev> 1698009000 -0400

bcachefs: bkey_ops.min_val_size

This adds a new field to bkey_ops for the minimum size of the value,
which standardizes that check and also enforces the new rule (previously
done somewhat ad-hoc) that we can extend value types by adding new
fields on to the end.

To make that work we do _not_ initialize min_val_size with sizeof,
instead we initialize it to the size of the first version of those
values.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>