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Date: Mon, 5 Oct 2026 15:20:29 +0200
From: Christoph Hellwig <hch@lst.de>
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>, Zorro Lang <zlang@kernel.org>,
	fstests@vger.kernel.org, linux-xfs@vger.kernel.org
Subject: Re: [PATCH 05/13] xfs: add a _require_xfs_data_csum helper
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References: <20260924100855.2734089-1-hch@lst.de> <20260924100855.2734089-6-hch@lst.de> <20260929013850.GH2705364@frogsfrogsfrogs>
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On Mon, Sep 28, 2026 at 06:38:50PM -0700, Darrick J. Wong wrote:
> Any chance we could export file data checksum type via statx or
> somewhere?

I think Christian would hate that.  But maybe fsxattrs?
Note that the io_uring support when I get around it will implement
FS_IOC_GETLBMD_CAP, which also has this information, although in a
somewhat convoluted way.