Re: [RFC PATCH 10/11] xfs: add fs-verity support

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On Tue, Dec 13, 2022 at 11:08:45AM -0800, Eric Biggers wrote:
> On Tue, Dec 13, 2022 at 06:29:34PM +0100, Andrey Albershteyn wrote:
> > 
> > Also add check that block size == PAGE_SIZE as fs-verity doesn't
> > support different sizes yet.
> 
> That's coming with
> https://lore.kernel.org/linux-fsdevel/20221028224539.171818-1-ebiggers@xxxxxxxxxx/T/#u,
> which I'll be resending soon and I hope to apply for 6.3.
> Review and testing of that patchset, along with its associated xfstests update
> (https://lore.kernel.org/fstests/20221211070704.341481-1-ebiggers@xxxxxxxxxx/T/#u),
> would be greatly appreciated.
> 
> Note, as proposed there will still be a limit of:
> 
> 	merkle_tree_block_size <= fs_block_size <= page_size
> 
> Hopefully you don't need fs_block_size > page_size or

Not right this second, but large folios (and the ability to demand them)
are probably the last major piece that we need to support running
64k-fsblock filesystems on x86.

> merkle_tree_block_size > fs_block_size?

Doubtful.

--D

> 
> - Eric



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