From: Bjorn Helgaas <helgaas@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Logan Gunthorpe <logang@deltatee.com>,
Hou Tao <houtao@huaweicloud.com>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-mm@kvack.org, linux-nvme@lists.infradead.org,
Bjorn Helgaas <bhelgaas@google.com>,
Alistair Popple <apopple@nvidia.com>,
Leon Romanovsky <leonro@nvidia.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Tejun Heo <tj@kernel.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Danilo Krummrich <dakr@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@kernel.dk>,
Sagi Grimberg <sagi@grimberg.me>,
houtao1@huawei.com
Subject: Re: [PATCH 02/13] PCI/P2PDMA: Fix the warning condition in p2pmem_alloc_mmap()
Date: Wed, 7 Jan 2026 11:17:24 -0600 [thread overview]
Message-ID: <20260107171724.GA432074@bhelgaas> (raw)
In-Reply-To: <20260107143942.GB14904@lst.de>
On Wed, Jan 07, 2026 at 03:39:42PM +0100, Christoph Hellwig wrote:
> On Mon, Dec 22, 2025 at 09:50:18AM -0700, Logan Gunthorpe wrote:
> > > Fixes: b7e282378773 ("mm/mm_init: move p2pdma page refcount initialisation to p2pdma")
> > > Signed-off-by: Hou Tao <houtao1@huawei.com>
> >
> > Thanks for the fix
> >
> > Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
>
> Can we get these fixes queued up ASAP while discussing the new
> feature?
I assume you mean the first two patches:
PCI/P2PDMA: Release the per-cpu ref of pgmap when vm_insert_page() fails
PCI/P2PDMA: Fix the warning condition in p2pmem_alloc_mmap()
I can certainly queue these up. The second is a warning fix, and the
first fixes a hang that has apparently been around since v6.2
(7e9c7ef83d78 ("PCI/P2PDMA: Allow userspace VMA allocations through
sysfs")).
Given that, I would ordinarily target the v6.20 merge window, but the
"ASAP" suggests more urgency. Do you want one or both for v6.19?
Bjorn
next prev parent reply other threads:[~2026-01-07 17:17 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-20 4:04 [PATCH 00/13] Enable compound page for p2pdma memory Hou Tao
2025-12-20 4:04 ` [PATCH 01/13] PCI/P2PDMA: Release the per-cpu ref of pgmap when vm_insert_page() fails Hou Tao
2025-12-22 16:49 ` Logan Gunthorpe
2026-01-08 3:23 ` Alistair Popple
2026-01-08 15:55 ` Bjorn Helgaas
2025-12-20 4:04 ` [PATCH 02/13] PCI/P2PDMA: Fix the warning condition in p2pmem_alloc_mmap() Hou Tao
2025-12-22 16:50 ` Logan Gunthorpe
2026-01-07 14:39 ` Christoph Hellwig
2026-01-07 17:17 ` Bjorn Helgaas [this message]
2026-01-07 20:34 ` Bjorn Helgaas
2026-01-08 10:17 ` Christoph Hellwig
2026-01-08 3:28 ` Alistair Popple
2025-12-20 4:04 ` [PATCH 03/13] kernfs: add support for get_unmapped_area callback Hou Tao
2025-12-20 15:43 ` kernel test robot
2025-12-20 15:57 ` kernel test robot
2025-12-20 4:04 ` [PATCH 04/13] kernfs: add support for may_split and pagesize callbacks Hou Tao
2025-12-20 4:04 ` [PATCH 05/13] sysfs: support get_unmapped_area callback for binary file Hou Tao
2025-12-20 4:04 ` [PATCH 06/13] PCI/P2PDMA: add align parameter for pci_p2pdma_add_resource() Hou Tao
2025-12-20 4:04 ` [PATCH 07/13] PCI/P2PDMA: create compound page for aligned p2pdma memory Hou Tao
2026-01-08 5:14 ` Alistair Popple
2025-12-20 4:04 ` [PATCH 08/13] mm/huge_memory: add helpers to insert huge page during mmap Hou Tao
2025-12-20 4:04 ` [PATCH 09/13] PCI/P2PDMA: support get_unmapped_area to return aligned vaddr Hou Tao
2025-12-20 4:04 ` [PATCH 10/13] PCI/P2PDMA: support compound page in p2pmem_alloc_mmap() Hou Tao
2025-12-22 17:04 ` Logan Gunthorpe
2025-12-24 2:20 ` Hou Tao
2026-01-05 17:24 ` Logan Gunthorpe
2026-01-07 20:24 ` Jason Gunthorpe
2026-01-07 21:22 ` Logan Gunthorpe
2026-01-08 5:20 ` Alistair Popple
2025-12-20 4:04 ` [PATCH 11/13] PCI/P2PDMA: add helper pci_p2pdma_max_pagemap_align() Hou Tao
2025-12-20 4:04 ` [PATCH 12/13] nvme-pci: introduce cmb_devmap_align module parameter Hou Tao
2025-12-20 22:22 ` kernel test robot
2025-12-20 4:04 ` [PATCH 13/13] PCI/P2PDMA: enable compound page support for p2pdma memory Hou Tao
2025-12-22 17:10 ` Logan Gunthorpe
2025-12-21 12:19 ` [PATCH 00/13] Enable compound page " Leon Romanovsky
[not found] ` <416b2575-f5e7-7faf-9e7c-6e9df170bf1a@huaweicloud.com>
2025-12-24 1:37 ` Hou Tao
2025-12-24 9:22 ` Leon Romanovsky
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