Re: [PATCH 4/5] xfs: report the correct read/write dio alignment for reflinked inodes

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On Wed, Jan 08, 2025 at 09:53:58AM -0800, Eric Biggers wrote:
> This contradicts the proposed man page, which says the following about
> stx_dio_read_offset_align offset:
> 
>           If non-zero this value must be smaller than  stx_dio_offset_align
>           which  must be provided by the file system.
> 
> The proposed code sets stx_dio_read_offset_align and stx_dio_offset_align to the
> same value in some cases.
> 
> Perhaps the documentation should say "less than or equal to"?

Yes, I'll fix it up.

> Also, the claim that stx_dio_offset_align "must be provided by the file system"
> if stx_dio_read_offset_align is nonzero should probably be conditional on
> STATX_DIOALIGN being provided too.

I'll add a "if requested" to the man page.





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