From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 12FE11E4BE; Wed, 25 Mar 2026 13:58:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774447088; cv=none; b=oTdA1ikQ8bMI2odI0VUQdlgS44Q9Q+8XuHJh39kJigRJrXb7kaOr1pGSTxGWfTedCnqwICcpXxlNybcqdMMQccTnkn6+yQN1TrOsxqyV8FCAsraJEmW/4rB8th8mvfiXs3ZoGKebkSdjLqgLtWuDJj393KIWIGpO5NsyIkx1YK0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774447088; c=relaxed/simple; bh=KyjiwAokSYk7ozvT6M+V8CAJzdrqAh71WLKooyLlGIw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=GlEY1hK4ZWX8LFZpJzbQg4xNMiEF316CRrGUhVc3wGuZ2VNhgdnxh0MaUTJJ/0Hm8yMG3xsObPBCg/nZAcBdou0W8QPW/ipxTmMqs5qul9J1Ph0jU/bZERIsGYUOUuMZMYYySS7N7SnscS2QvgxMK+10lhEur9ooKyuGx9+yn88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a/Isf1Nn; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="a/Isf1Nn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64A8AC4CEF7; Wed, 25 Mar 2026 13:57:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774447087; bh=KyjiwAokSYk7ozvT6M+V8CAJzdrqAh71WLKooyLlGIw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=a/Isf1Nn7bbzilJ+WFOdPoPwPnR5v6LhxMrlFuBsyYg2XAwIEm2QemKRxXZjHN5Nu AChgjyjIk7vb33QJ6oLak9yHuJmn9pok4FzY118/Z+xhCYL9ZvqY/49+WryhvTm+9I H/uz07412nF3UDASUIjgPac3fueYVdb60S7vSKmq1WNoCwue6s87ja2S3Tsh5l+e3f 64SHJjpAkfwmhNBTPQZWk39ka/fPMUqC0l5Alm8rDrmCIyjXRQby1EnxD/KFHZR4nK FM9Uffh/ooy89oUPe3IV97KvalyzhwV1CHWkx0R4J2p9nJcR4wxJQ24/KPk84FZbM0 vIlUGx35sv7Jg== Message-ID: Date: Wed, 25 Mar 2026 14:57:57 +0100 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 18/21] drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare Content-Language: en-US To: "Lorenzo Stoakes (Oracle)" , Andrew Morton Cc: Jonathan Corbet , Clemens Ladisch , Arnd Bergmann , Greg Kroah-Hartman , "K . Y . Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Alexander Shishkin , Maxime Coquelin , Alexandre Torgue , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Bodo Stroesser , "Martin K . Petersen" , David Howells , Marc Dionne , Alexander Viro , Christian Brauner , Jan Kara , David Hildenbrand , "Liam R . Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org, linux-staging@lists.linux.dev, 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 References: <05467cb62267d750e5c770147517d4df0246cda6.1774045440.git.ljs@kernel.org> From: "Vlastimil Babka (SUSE)" In-Reply-To: <05467cb62267d750e5c770147517d4df0246cda6.1774045440.git.ljs@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit 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) Acked-by: Vlastimil Babka (SUSE)