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Date: Wed, 19 Aug 2026 07:23:06 +0200
From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@meta.com>
Cc: linux-block@vger.kernel.org, axboe@kernel.dk, hch@lst.de,
	Keith Busch <kbusch@kernel.org>, Eric Auger <eauger@redhat.com>
Subject: Re: [PATCH] block: save page offset gaps in cloned bio
Message-ID: <20260819052306.GA32364@lst.de>
References: <20260817165908.137682-1-kbusch@meta.com>
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On Mon, Aug 17, 2026 at 09:59:08AM -0700, Keith Busch wrote:
> From: Keith Busch <kbusch@kernel.org>
> 
> The cloned bio needs to inherit the accumulated gaps between vectors so
> that we can know if this bio can subscribe to the iova coalescing
> optimization.

Makes sense.

> The split remainder meanwhile can reset its gaps to 0
> since it advanced beyond it and will start accounting from there.

I don't really understand this part, though.  As in I don't even
understand what you mean here..