# Pre11 Batch A

This batch performs two mechanical vocabulary alignments:

- `struct erofs_mount.block_bits` is renamed to `blkszbits`.
- `erofs_fill_map_dev()` is renamed to `erofs_fill_from_devinfo()`.

No types, expressions, control flow, ownership rules, error handling, or runtime behavior were changed. Semantic type alias changes were deferred because they were not needed for this pure mechanical batch.

Validation is limited to identifier occurrence checks, diff inspection, and `git diff --check`. Build and runtime testing are deferred to the later Pre11 validation stage.
