Re: [PATCH 14/27] ext4: add KUnit tests for fs/ext4/block_validity.c

[sashiko-bot@kernel.org]

> Add the ext4_block_validity_test KUnit test suite in
> fs/ext4/block_validity-test.c (16 test cases, 40 subtests total) to
> comprehensively exercise system-zone rbtree construction, RCU release,
> block range validation, reserved journal inode protection, and indirect
> block reference checking in fs/ext4/block_validity.c using an in-memory
> VFS superblock and mock block device without requiring a mounted disk:
> 
> - Bounds and 64-bit overflow checks (ext4_sb_block_valid and
>   ext4_inode_block_valid) across 1KiB (s_first_data_block = 1) and 4KiB
>   (s_first_data_block = 0) geometries, exact end-of-filesystem single
>   and multi-block spans, 64-bit u64 addition wrap-around, >32-bit block
>   counts under EXT4_FEATURE_INCOMPAT_64BIT, and high-32-bit masking when
>   64bit is cleared.
> - System-zone lifecycle management (ext4_setup_system_zone and
>   ext4_release_system_zone), covering pre-setup NULL behavior, RCU
> [ ... ]
> 
> Export the five runtime entry points in fs/ext4/block_validity.c with
> EXPORT_SYMBOL_FOR_EXT4_TEST for the ext4-test KUnit module.
> 
> Signed-off-by: Theodore Ts'o <tytso@mit.edu>

Sashiko has reviewed this patch and found no issues.

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Sashiko AI review · https://sashiko.dev/#/patchset/20261112040638.1576836-1-tytso@mit.edu?part=14