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Date:   Thu, 19 May 2022 09:43:14 +0200
From:   "hch@lst.de" <hch@lst.de>
To:     Eric Biggers <ebiggers@kernel.org>
Cc:     Chaitanya Kulkarni <chaitanyak@nvidia.com>,
        Keith Busch <kbusch@kernel.org>, Keith Busch <kbusch@fb.com>,
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Subject: Re: [PATCHv2 0/3] direct io alignment relax
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On Wed, May 18, 2022 at 07:02:43PM -0700, Eric Biggers wrote:
> If you're thinking about about BLKDISCARD and BLKZEROOUT, those are block device
> ioctls, so statx() doesn't seem like a great fit for them.  There is already a
> place to expose block device properties to userspace (/sys/block/$dev/).  Direct
> I/O is different because direct I/O is not just a feature of block devices but
> also of regular files, and it is affected by filesystem-level constraints.

Agreed.