From: Peter Xu <peterx@redhat.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: kvm@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Jason Gunthorpe <jgg@nvidia.com>,
Nico Pache <npache@redhat.com>, Zi Yan <ziy@nvidia.com>,
Alex Mastro <amastro@fb.com>,
David Hildenbrand <david@redhat.com>,
Alex Williamson <alex@shazbot.org>, Zhi Wang <zhiw@nvidia.com>,
David Laight <david.laight.linux@gmail.com>,
Yi Liu <yi.l.liu@intel.com>, Ankit Agrawal <ankita@nvidia.com>,
Kevin Tian <kevin.tian@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Jann Horn <jannh@google.com>,
Pedro Falcato <pfalcato@suse.de>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@kernel.org>
Subject: Re: [PATCH v2 2/4] mm: Add file_operations.get_mapping_order()
Date: Wed, 10 Dec 2025 15:24:08 -0500 [thread overview]
Message-ID: <aTnW6OorSRmn1SqI@x1.local> (raw)
In-Reply-To: <aTaYtlTdhxKx2R24@casper.infradead.org>
On Mon, Dec 08, 2025 at 09:21:58AM +0000, Matthew Wilcox wrote:
> On Thu, Dec 04, 2025 at 10:19:44AM -0500, Peter Xu wrote:
> > > Add one new file operation, get_mapping_order(). It can be used by file
> > > backends to report mapping order hints.
>
> This seems like a terrible idea. I'll look at it after Plumbers.
Sure, no rush, please feel free to go through discussion in v1 when it
comes, that's where we landed to this API based on suggestions from Jason.
I'm open to other suggestions.
--
Peter Xu
next prev parent reply other threads:[~2025-12-10 20:24 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-04 15:09 [PATCH v2 0/4] mm/vfio: huge pfnmaps with !MAP_FIXED mappings Peter Xu
2025-12-04 15:10 ` [PATCH v2 1/4] mm/thp: Allow thp_get_unmapped_area_vmflags() to take alignment Peter Xu
2025-12-04 15:10 ` [PATCH v2 2/4] mm: Add file_operations.get_mapping_order() Peter Xu
2025-12-04 15:19 ` Peter Xu
2025-12-08 9:21 ` Matthew Wilcox
2025-12-10 20:24 ` Peter Xu [this message]
2025-12-07 16:21 ` Jason Gunthorpe
2025-12-10 20:23 ` Peter Xu
2025-12-16 14:44 ` Jason Gunthorpe
2025-12-16 15:42 ` Peter Xu
2025-12-16 17:19 ` Jason Gunthorpe
2025-12-16 17:36 ` Peter Xu
2025-12-16 18:58 ` Jason Gunthorpe
2025-12-16 19:44 ` Peter Xu
2025-12-19 14:59 ` Jason Gunthorpe
2025-12-19 15:13 ` Peter Xu
2025-12-19 15:20 ` Jason Gunthorpe
2025-12-19 15:53 ` Peter Xu
2025-12-04 15:10 ` [PATCH v2 3/4] vfio: Introduce vfio_device_ops.get_mapping_order hook Peter Xu
2025-12-04 15:10 ` [PATCH v2 4/4] vfio-pci: Best-effort huge pfnmaps with !MAP_FIXED mappings Peter Xu
2025-12-05 4:33 ` kernel test robot
2025-12-05 7:45 ` kernel test robot
2025-12-07 16:26 ` Jason Gunthorpe
2025-12-10 20:43 ` Peter Xu
2025-12-16 14:42 ` Jason Gunthorpe
2025-12-16 16:01 ` Peter Xu
2025-12-16 19:01 ` Jason Gunthorpe
2025-12-16 19:58 ` Peter Xu
2025-12-08 3:11 ` Alex Mastro
2025-12-04 18:16 ` [PATCH v2 0/4] mm/vfio: " Cédric Le Goater
2025-12-07 9:13 ` Alex Mastro
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