Re: [PATCH 4/4] ext4: allow large folios and bs > ps encryption

[sashiko-bot@kernel.org]

> ext4 refuses encryption when the block size exceeds the page size
> in three places: at mount time (ext4_check_large_folio()),
> in ext4_set_context(), and in __ext4_iget().
> 
> Sub-block data units are now enabled by default, so encryption
> works on a filesystem whose block size exceeds the page size.
> Remove the three checks; stable trees should keep them and
> not backport this feature.
> 
> ext4_set_max_mapping_order() now runs on every mount, and
> the preceding patch routes a folio that crosses a DUN wraparound
> to the buffer_head path. Encrypted files therefore get the same
> large folio orders as unencrypted files, including when block size
> is larger than page size.
> 
> Signed-off-by: Baokun Li <libaokun@linux.alibaba.com>

Sashiko has reviewed this patch and found no issues.

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Sashiko AI review · https://sashiko.dev/#/patchset/20261103153132.4154855-1-libaokun@linux.alibaba.com?part=4