From: Jens Axboe <axboe@kernel.dk>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: "Jérôme Glisse" <jglisse@redhat.com>,
linux-nvdimm@lists.01.org, linux-rdma@vger.kernel.org,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-block@vger.kernel.org,
"Alex Williamson" <alex.williamson@redhat.com>,
"Jason Gunthorpe" <jgg@mellanox.com>,
"Christoph Hellwig" <hch@lst.de>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Max Gurtovoy" <maxg@mellanox.com>,
"Christian König" <christian.koenig@amd.com>
Subject: Re: [PATCH v9 07/13] block: Add PCI P2P flag for request queue and check support for requests
Date: Wed, 10 Oct 2018 14:00:07 -0600 [thread overview]
Message-ID: <167fcf01-4bbc-f870-3750-6e950bfd6471@kernel.dk> (raw)
In-Reply-To: <20181010195901.GE5906@bhelgaas-glaptop.roam.corp.google.com>
On 10/10/18 1:59 PM, Bjorn Helgaas wrote:
> On Fri, Oct 05, 2018 at 07:16:04PM -0600, Jens Axboe wrote:
>> On 10/4/18 3:27 PM, Logan Gunthorpe wrote:
>>> QUEUE_FLAG_PCI_P2P is introduced meaning a driver's request queue
>>> supports targeting P2P memory. This will be used by P2P providers and
>>> orchestrators (in subsequent patches) to ensure block devices can
>>> support P2P memory before submitting P2P backed pages to submit_bio().
>>
>> Nit pick, but the subject line still says that it checks support
>> for requests. This patch just adds the ability to flag support
>> in the queue.
>
> What about the following? MAINTAINERS doesn't list a specific
> maintainer for include/linux/blkdev.h (maybe the "BLOCK LAYER" entry
> should have an F: pattern for it?), but I'd really like your ack
> before merging this.
>
> commit 7e647ae1eda290786851c3dff4f38189b982386d
> Author: Logan Gunthorpe <logang@deltatee.com>
> Date: Thu Oct 4 15:27:41 2018 -0600
>
> block: Add PCI P2P flag for request queue
>
> Add QUEUE_FLAG_PCI_P2P, meaning a driver's request queue supports targeting
> P2P memory. This will be used by P2P providers and orchestrators (in
> subsequent patches) to ensure block devices can support P2P memory before
> submitting P2P-backed pages to submit_bio().
>
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
You can add my acked-by to this one.
--
Jens Axboe
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next prev parent reply other threads:[~2018-10-10 20:00 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-04 21:27 [PATCH v9 00/13] Copy Offload in NVMe Fabrics with P2P PCI Memory Logan Gunthorpe
2018-10-04 21:27 ` [PATCH v9 01/13] PCI/P2PDMA: Support peer-to-peer memory Logan Gunthorpe
2018-10-04 21:27 ` [PATCH v9 02/13] PCI/P2PDMA: Add sysfs group to display p2pmem stats Logan Gunthorpe
2018-10-05 7:08 ` Christoph Hellwig
2018-10-04 21:27 ` [PATCH v9 03/13] PCI/P2PDMA: Add PCI p2pmem DMA mappings to adjust the bus offset Logan Gunthorpe
2018-10-05 7:08 ` Christoph Hellwig
2018-10-04 21:27 ` [PATCH v9 04/13] PCI/P2PDMA: Introduce configfs/sysfs enable attribute helpers Logan Gunthorpe
2018-10-05 7:08 ` Christoph Hellwig
2018-10-04 21:27 ` [PATCH v9 05/13] docs-rst: Add a new directory for PCI documentation Logan Gunthorpe
2018-10-04 21:27 ` [PATCH v9 06/13] PCI/P2PDMA: Add P2P DMA driver writer's documentation Logan Gunthorpe
2018-10-04 21:27 ` [PATCH v9 07/13] block: Add PCI P2P flag for request queue and check support for requests Logan Gunthorpe
2018-10-05 7:09 ` Christoph Hellwig
2018-10-06 1:16 ` Jens Axboe
2018-10-10 19:59 ` Bjorn Helgaas
2018-10-10 20:00 ` Jens Axboe [this message]
2018-10-04 21:27 ` [PATCH v9 08/13] IB/core: Ensure we map P2P memory correctly in rdma_rw_ctx_[init|destroy]() Logan Gunthorpe
2018-10-05 7:09 ` Christoph Hellwig
2018-10-04 21:27 ` [PATCH v9 09/13] nvme-pci: Use PCI p2pmem subsystem to manage the CMB Logan Gunthorpe
2018-10-05 7:09 ` Christoph Hellwig
2018-10-04 21:27 ` [PATCH v9 10/13] nvme-pci: Add support for P2P memory in requests Logan Gunthorpe
2018-10-04 21:27 ` [PATCH v9 11/13] nvme-pci: Add a quirk for a pseudo CMB Logan Gunthorpe
2018-10-05 7:10 ` Christoph Hellwig
2018-10-05 15:39 ` Logan Gunthorpe
2018-10-04 21:27 ` [PATCH v9 12/13] nvmet: Introduce helper functions to allocate and free request SGLs Logan Gunthorpe
2018-10-05 7:11 ` Christoph Hellwig
2018-10-04 21:27 ` [PATCH v9 13/13] nvmet: Optionally use PCI P2P memory Logan Gunthorpe
2018-10-04 22:20 ` Sagi Grimberg
2018-10-04 22:29 ` Logan Gunthorpe
2018-10-05 7:07 ` Christoph Hellwig
2018-10-05 7:34 ` Sagi Grimberg
2018-10-05 15:42 ` Logan Gunthorpe
2018-10-10 20:19 ` [PATCH v9 00/13] Copy Offload in NVMe Fabrics with P2P PCI Memory Bjorn Helgaas
2018-10-10 23:03 ` Logan Gunthorpe
2018-10-11 3:18 ` Bjorn Helgaas
2018-10-11 15:38 ` Logan Gunthorpe
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