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Date: Mon, 20 Oct 2025 16:45:22 +0200
From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@meta.com>
Cc: dsterba@suse.com, cem@kernel.org, linux-btrfs@vger.kernel.org,
	linux-xfs@vger.kernel.org, hch@lst.de,
	Keith Busch <kbusch@kernel.org>, Chris Mason <clm@fb.com>
Subject: Re: [PATCH 1/2] xfs: handle bio split errors during gc
Message-ID: <20251020144522.GB30487@lst.de>
References: <20251020144356.693288-1-kbusch@meta.com>
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On Mon, Oct 20, 2025 at 07:43:55AM -0700, Keith Busch wrote:
> From: Keith Busch <kbusch@kernel.org>
> 
> bio_split_rw_at may return a negative error value if the bio can not be
> split into anything that adheres to the block device's queue limits.
> Check for that condition and fail the bio accordingly.

Ugg, how?  If that actually happens we're toast, so we should find a
way to ensure it does not happen.