From: Keith Busch <kbusch@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Keith Busch <kbusch@meta.com>,
axboe@kernel.dk, martin.petersen@oracle.com,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
linux-scsi@vger.kernel.org, sagi@grimberg.me
Subject: Re: [PATCHv3 08/10] blk-integrity: remove inappropriate limit checks
Date: Tue, 10 Sep 2024 10:21:09 -0600 [thread overview]
Message-ID: <ZuBx9blCTUvsS6yq@kbusch-mbp> (raw)
In-Reply-To: <20240910154526.GH23805@lst.de>
On Tue, Sep 10, 2024 at 05:45:26PM +0200, Christoph Hellwig wrote:
> On Wed, Sep 04, 2024 at 08:26:03AM -0700, Keith Busch wrote:
> > From: Keith Busch <kbusch@kernel.org>
> >
> > The queue limits for block access are not the same as metadata access.
> > Delete these.
>
> While for NVMe-PCIe there isn't any metadata mapping using PRPs, for RDMA
> the PRP-like scheme is used for anything, so the same virtual boundary
> limits apply for all mappings.
Oh shoot. The end goal here is to support NVMe META SGL mode, and that
virt boundary doesn't work there.
I was hoping to not introduce another queue limit for the metadata
virt_boundary_mask. We could remove the virt_boundary from the NVMe PCI
driver if it supports SGL's and then we're fine. But we're commiting to
that data format for all IO even if PRP might have been more efficient.
That might be alright, though.
next prev parent reply other threads:[~2024-09-10 16:21 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-04 15:25 [PATCHv3 00/10] block integrity merging and counting Keith Busch
2024-09-04 15:25 ` [PATCHv3 01/10] blk-mq: set the nr_integrity_segments from bio Keith Busch
2024-09-10 15:29 ` Christoph Hellwig
2024-09-04 15:25 ` [PATCHv3 02/10] block: provide helper for nr_integrity_segments Keith Busch
2024-09-10 15:30 ` Christoph Hellwig
2024-09-10 15:39 ` Keith Busch
2024-09-04 15:25 ` [PATCHv3 03/10] scsi: use request helper to get integrity segments Keith Busch
2024-09-10 15:32 ` Christoph Hellwig
2024-09-10 23:02 ` Keith Busch
2024-09-11 8:06 ` Christoph Hellwig
2024-09-04 15:25 ` [PATCHv3 04/10] nvme-rdma: " Keith Busch
2024-09-10 15:32 ` Christoph Hellwig
2024-09-04 15:26 ` [PATCHv3 05/10] block: unexport blk_rq_count_integrity_sg Keith Busch
2024-09-10 15:33 ` Christoph Hellwig
2024-09-04 15:26 ` [PATCHv3 06/10] blk-integrity: simplify counting segments Keith Busch
2024-09-10 15:41 ` Christoph Hellwig
2024-09-10 16:06 ` Keith Busch
2024-09-11 8:17 ` Christoph Hellwig
2024-09-11 15:28 ` Keith Busch
2024-09-12 7:01 ` Christoph Hellwig
2024-09-04 15:26 ` [PATCHv3 07/10] blk-integrity: simplify mapping sg Keith Busch
2024-09-10 15:43 ` Christoph Hellwig
2024-09-04 15:26 ` [PATCHv3 08/10] blk-integrity: remove inappropriate limit checks Keith Busch
2024-09-10 15:45 ` Christoph Hellwig
2024-09-10 16:21 ` Keith Busch [this message]
2024-09-11 8:18 ` Christoph Hellwig
2024-09-11 15:18 ` Keith Busch
2024-09-04 15:26 ` [PATCHv3 09/10] blk-integrity: consider entire bio list for merging Keith Busch
2024-09-10 15:48 ` Christoph Hellwig
2024-09-10 17:19 ` Keith Busch
2024-09-04 15:26 ` [PATCHv3 10/10] blk-merge: properly account for integrity segments Keith Busch
2024-09-06 11:28 ` Anuj Gupta
2024-09-10 15:49 ` Christoph Hellwig
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