From: Keith Busch <kbusch@kernel.org>
To: Damien Le Moal <dlemoal@kernel.org>
Cc: Keith Busch <kbusch@meta.com>,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, snitzer@kernel.org,
axboe@kernel.dk, dw@davidwei.uk, brauner@kernel.org, hch@lst.de,
martin.petersen@oracle.com, djwong@kernel.org,
linux-xfs@vger.kernel.org, viro@zeniv.linux.org.uk
Subject: Re: [PATCHv3 1/8] block: check for valid bio while splitting
Date: Wed, 20 Aug 2025 08:25:32 -0600 [thread overview]
Message-ID: <aKXa3Nwn_Mz09MPW@kbusch-mbp> (raw)
In-Reply-To: <d07a4397-1648-4264-8a30-74a2ea3da165@kernel.org>
On Wed, Aug 20, 2025 at 04:02:31PM +0900, Damien Le Moal wrote:
> On 8/20/25 1:49 AM, Keith Busch wrote:
> > {
> > struct bio_vec bv, bvprv, *bvprvp = NULL;
> > struct bvec_iter iter;
> > unsigned nsegs = 0, bytes = 0;
> >
> > bio_for_each_bvec(bv, bio, iter) {
> > + if (bv.bv_offset & lim->dma_alignment || bv.bv_len & len_align)
>
> Shouldn't this be:
>
> if (bv.bv_offset & len_align || bv.bv_len & len_align)
>
> ?
No, we alwqys need to validate the address offset against the dma
alignment. The length is not validated for passthrough commands though,
so different masks for each so they can be independently set.
next prev parent reply other threads:[~2025-08-20 14:25 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20250819164922.640964-1-kbusch@meta.com>
2025-08-19 23:36 ` [PATCHv3 0/8] direct-io: even more flexible io vectors Mike Snitzer
2025-08-20 1:52 ` Song Chen
[not found] ` <20250819164922.640964-2-kbusch@meta.com>
2025-08-20 7:02 ` [PATCHv3 1/8] block: check for valid bio while splitting Damien Le Moal
2025-08-20 14:25 ` Keith Busch [this message]
2025-08-20 7:04 ` Damien Le Moal
2025-08-25 7:35 ` Christoph Hellwig
2025-08-22 13:27 ` [PATCHv3 0/8] direct-io: even more flexible io vectors Ritesh Harjani
2025-08-22 14:30 ` Keith Busch
2025-08-25 12:07 ` Jan Kara
2025-08-25 14:53 ` Keith Busch
2025-08-26 4:59 ` Ritesh Harjani
2025-08-27 15:20 ` Jan Kara
2025-08-27 16:09 ` Mike Snitzer
2025-09-01 7:55 ` Jan Kara
2025-09-02 14:39 ` Mike Snitzer
2025-08-27 17:52 ` Brian Foster
2025-08-27 19:20 ` Keith Busch
2025-09-01 8:22 ` Jan Kara
2025-08-29 2:11 ` Ritesh Harjani
2025-08-29 3:19 ` Ritesh Harjani
[not found] ` <20250819164922.640964-3-kbusch@meta.com>
2025-08-25 7:36 ` [PATCHv3 2/8] block: add size alignment to bio_iov_iter_get_pages Christoph Hellwig
[not found] ` <20250819164922.640964-4-kbusch@meta.com>
2025-08-20 7:07 ` [PATCHv3 3/8] block: align the bio after building it Damien Le Moal
2025-08-25 7:46 ` Christoph Hellwig
2025-08-25 13:57 ` Keith Busch
2025-08-25 7:47 ` Christoph Hellwig
2025-08-26 0:37 ` Keith Busch
2025-08-26 8:02 ` Christoph Hellwig
2025-08-26 23:11 ` Keith Busch
[not found] ` <20250819164922.640964-5-kbusch@meta.com>
2025-08-25 7:48 ` [PATCHv3 4/8] block: simplify direct io validity check Christoph Hellwig
[not found] ` <20250819164922.640964-6-kbusch@meta.com>
2025-08-25 7:48 ` [PATCHv3 5/8] iomap: " Christoph Hellwig
[not found] ` <20250819164922.640964-7-kbusch@meta.com>
2025-08-25 7:48 ` [PATCHv3 6/8] block: remove bdev_iter_is_aligned Christoph Hellwig
[not found] ` <20250819164922.640964-8-kbusch@meta.com>
2025-08-25 7:49 ` [PATCHv3 7/8] blk-integrity: use simpler alignment check Christoph Hellwig
[not found] ` <20250819164922.640964-9-kbusch@meta.com>
2025-08-25 7:50 ` [PATCHv3 8/8] iov_iter: remove iov_iter_is_aligned Christoph Hellwig
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