From: "Vlastimil Babka (SUSE)" <vbabka@kernel.org>
To: "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>,
Clemens Ladisch <clemens@ladisch.de>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"K . Y . Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
Long Li <longli@microsoft.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Bodo Stroesser <bostroesser@gmail.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
David Howells <dhowells@redhat.com>,
Marc Dionne <marc.dionne@auristor.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
David Hildenbrand <david@kernel.org>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>, Jann Horn <jannh@google.com>,
Pedro Falcato <pfalcato@suse.de>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
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linux-scsi@vger.kernel.org, target-devel@vger.kernel.org,
linux-afs@lists.infradead.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, Ryan Roberts <ryan.roberts@arm.com>
Subject: Re: [PATCH v4 18/21] drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare
Date: Wed, 25 Mar 2026 14:57:57 +0100 [thread overview]
Message-ID: <b1b682fb-9d79-4388-8499-4623d0785ec0@kernel.org> (raw)
In-Reply-To: <05467cb62267d750e5c770147517d4df0246cda6.1774045440.git.ljs@kernel.org>
On 3/20/26 23:39, Lorenzo Stoakes (Oracle) wrote:
> The f_op->mmap interface is deprecated, so update the vmbus driver to use
> its successor, mmap_prepare.
>
> This updates all callbacks which referenced the function pointer
> hv_mmap_ring_buffer to instead reference hv_mmap_prepare_ring_buffer,
> utilising the newly introduced compat_set_desc_from_vma() and
> __compat_vma_mmap() to be able to implement this change.
>
> The UIO HV generic driver is the only user of hv_create_ring_sysfs(),
> which is the only function which references
> vmbus_channel->mmap_prepare_ring_buffer which, in turn, is the only
> external interface to hv_mmap_prepare_ring_buffer.
>
> This patch therefore updates this caller to use mmap_prepare instead,
> which also previously used vm_iomap_memory(), so this change replaces it
> with its mmap_prepare equivalent, mmap_action_simple_ioremap().
>
> Signed-off-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
next prev parent reply other threads:[~2026-03-25 13:58 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-20 22:39 [PATCH v4 00/21] mm: expand mmap_prepare functionality and usage Lorenzo Stoakes (Oracle)
2026-03-20 22:39 ` [PATCH v4 01/21] mm: various small mmap_prepare cleanups Lorenzo Stoakes (Oracle)
2026-03-24 10:46 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 02/21] mm: add documentation for the mmap_prepare file operation callback Lorenzo Stoakes (Oracle)
2026-03-20 22:39 ` [PATCH v4 03/21] mm: document vm_operations_struct->open the same as close() Lorenzo Stoakes (Oracle)
2026-03-20 22:39 ` [PATCH v4 04/21] mm: avoid deadlock when holding rmap on mmap_prepare error Lorenzo Stoakes (Oracle)
2026-03-24 10:55 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 05/21] mm: switch the rmap lock held option off in compat layer Lorenzo Stoakes (Oracle)
2026-03-24 14:26 ` Vlastimil Babka (SUSE)
2026-03-24 16:35 ` Lorenzo Stoakes (Oracle)
2026-03-20 22:39 ` [PATCH v4 06/21] mm/vma: remove superfluous map->hold_file_rmap_lock Lorenzo Stoakes (Oracle)
2026-03-24 14:31 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 07/21] mm: have mmap_action_complete() handle the rmap lock and unmap Lorenzo Stoakes (Oracle)
2026-03-24 14:38 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 08/21] mm: add vm_ops->mapped hook Lorenzo Stoakes (Oracle)
2026-03-24 15:32 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 09/21] fs: afs: revert mmap_prepare() change Lorenzo Stoakes (Oracle)
2026-03-25 9:06 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 10/21] fs: afs: restore mmap_prepare implementation Lorenzo Stoakes (Oracle)
2026-03-25 9:47 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 11/21] mm: add mmap_action_simple_ioremap() Lorenzo Stoakes (Oracle)
2026-03-25 9:58 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 12/21] misc: open-dice: replace deprecated mmap hook with mmap_prepare Lorenzo Stoakes (Oracle)
2026-03-25 10:04 ` Vlastimil Babka (SUSE)
2026-03-25 10:14 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 13/21] hpet: " Lorenzo Stoakes (Oracle)
2026-03-25 10:17 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 14/21] mtdchar: replace deprecated mmap hook with mmap_prepare, clean up Lorenzo Stoakes (Oracle)
2026-03-25 10:20 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 15/21] stm: replace deprecated mmap hook with mmap_prepare Lorenzo Stoakes (Oracle)
2026-03-25 10:24 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 16/21] staging: vme_user: " Lorenzo Stoakes (Oracle)
2026-03-25 10:34 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 17/21] mm: allow handling of stacked mmap_prepare hooks in more drivers Lorenzo Stoakes (Oracle)
2026-03-25 13:43 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 18/21] drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare Lorenzo Stoakes (Oracle)
2026-03-23 4:16 ` Michael Kelley
2026-03-23 9:13 ` Lorenzo Stoakes (Oracle)
2026-03-25 13:57 ` Vlastimil Babka (SUSE) [this message]
2026-03-20 22:39 ` [PATCH v4 19/21] uio: replace deprecated mmap hook with mmap_prepare in uio_info Lorenzo Stoakes (Oracle)
2026-03-25 14:13 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 20/21] mm: add mmap_action_map_kernel_pages[_full]() Lorenzo Stoakes (Oracle)
2026-03-26 10:44 ` Vlastimil Babka (SUSE)
2026-03-20 22:39 ` [PATCH v4 21/21] mm: on remap assert that input range within the proposed VMA Lorenzo Stoakes (Oracle)
2026-03-26 10:46 ` Vlastimil Babka (SUSE)
2026-03-21 2:42 ` [PATCH v4 00/21] mm: expand mmap_prepare functionality and usage Andrew Morton
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