Re: [f2fs-dev] [PATCH] fs: report direct io constraints through file_getattr

Eric Biggers via Linux-f2fs-devel <[email protected]> Fri, 10 Jul 2026 17:25:27 -0400
Newsgroups net.sourceforge.lists.linux-f2fs-devel,org.kernel.vger.linux-block,org.kernel.vger.linux-ext4,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-xfs
Message-ID <20260710212527.GB1911@quark>
On Tue, Jul 07, 2026 at 06:18:43PM -0700, Keith Busch via Linux-f2fs-devel wrote:
> From: Keith Busch <[email protected]>
> 
> Memory alignment constraints for direct io can vary depending on the
> backing storage hardware. Provide support through file_getattr to report
> the attributes necessary for applications to know how to construct valid
> read and write requests.
> 
> Suggested-by: Christoph Hellwig <[email protected]>
> Signed-off-by: Keith Busch <[email protected]>

This seems to be reinventing STATX_DIOALIGN and STATX_DIO_READ_ALIGN.
Any reason for this?

- Eric


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