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Date: Tue, 3 Mar 2026 17:07:21 +0100
From: Christoph Hellwig <hch@lst.de>
To: Eric Biggers <ebiggers@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
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Subject: Re: [PATCH 21/25] xor: add a better public API
Message-ID: <20260303160721.GH7021@lst.de>
References: <20260226151106.144735-1-hch@lst.de> <20260226151106.144735-22-hch@lst.de> <20260228065038.GH65277@quark>
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User-Agent: Mutt/1.5.17 (2007-11-01)

On Fri, Feb 27, 2026 at 10:50:38PM -0800, Eric Biggers wrote:
> The alignment requirements on the vectors should be documented, as
> should which values of bytes are accepted.  It looks like, at the very
> least, the vectors have to be 32-byte aligned and the length has to be a
> nonzero multiple of 512 bytes.  But I didn't check every implementation.

That would match the original use case in the md raid code and also in
file system uses such as btrfs, yes.