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Date: Wed, 15 Jul 2026 06:34:17 +0200
From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>, Qu Wenruo <wqu@suse.com>,
	Neptune <z1281552865@gmail.com>, linux-block@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 3/3] block,iov_iter: move bio_iov_iter_align_down into
 iov_iter_extract_bvecs
Message-ID: <20260715043417.GA15746@lst.de>
References: <20260714131318.2670042-1-hch@lst.de> <20260714131318.2670042-4-hch@lst.de> <alZHF1wZY58JSU7N@kbusch-mbp> <20260714145026.GA2213@lst.de> <alZniKpsda_UJtj1@kbusch-mbp>
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On Tue, Jul 14, 2026 at 10:44:56AM -0600, Keith Busch wrote:
> On Tue, Jul 14, 2026 at 04:50:26PM +0200, Christoph Hellwig wrote:
> > Yeah, we need to support that.  Kinda interesting that xfstests did
> > not hit it, though.  So back to the previous version.
> 
> Here's a simple test for this case if you want to try. This should work
> for any file or raw disk with nvme backing storage.
> 
> It prints "Success" before this series, and "Bad Address" after.

Yes, assuming the NVMe doesn't support SGLs and has a 512 byte
block size..  I guess this is going into blktessts/xfstests
once the query API lands?