From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 64F14FEFB51 for ; Fri, 27 Feb 2026 20:42:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D01D06B00E9; Fri, 27 Feb 2026 15:42:32 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id CD6146B00EB; Fri, 27 Feb 2026 15:42:32 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BC2136B00EC; Fri, 27 Feb 2026 15:42:32 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id AADC06B00E9 for ; Fri, 27 Feb 2026 15:42:32 -0500 (EST) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 533718C5A3 for ; Fri, 27 Feb 2026 20:42:32 +0000 (UTC) X-FDA: 84491409744.11.93FD452 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf27.hostedemail.com (Postfix) with ESMTP id 4052F40008 for ; Fri, 27 Feb 2026 20:42:30 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=UhCktEIb; spf=pass (imf27.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1772224950; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=SsfMWNXjgJqQSqlAr8CeRmyug8KPYhUAxdXhYK5qcVk=; b=UgEXmbOFtoZ7btE3+3d4iYxcJHZKf/3lWqHOQBFEkNOuCLCyaUeWgOs+eKMbptuljS9Apr h4fIc3u8//5h/8p0YEAx90vpuO08qgUY+kU+i7utaq8MJzKpwNpgdTG6qQqsinmqv98ZoU 6R8y2YANr2IU8UksknYHaUDCHECWano= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=UhCktEIb; spf=pass (imf27.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1772224950; a=rsa-sha256; cv=none; b=2AXbUgAdBG2UrHHyv9WbdDJn87zBK4zuShtdP2EO5W0CZG+XJyd64pSMjxrKcwz9es4qo3 OrL2j5uA8IIdyWhMAgXgQP6GOglIbV+1zzJj9j3Q88yRLl0+bqZlH4CQ/XUZFebcPfMupz 6HG2iaokJouLKMUwBoofHdSWibKEnJQ= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 5A47742B7F; Fri, 27 Feb 2026 20:42:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C769C19423; Fri, 27 Feb 2026 20:42:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772224949; bh=HoDEtvg3GBOF96zWJnOOBK0G0fY86adGkY74DzxijNk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=UhCktEIbAUDL9Zi2WQd3Bw9EURAPYLxkgEpK+CsepI+fOXULQE8JgHg1vl8KSTp23 BLuUmlh415T01I4XECWLf4lkEYQfVTIHjBO1HWl+Gf1rcinKdsgi9q7UwyEy2uBgBc hdRSm4apydFPE08ex7f+FZgXbuXgU9FwuiYun8IavC+GtzddnGybOqXkl5ls345ewn 1ojFHG8uNnNykR7DiXj331XVtk2Yj3w9NkeK9R7V6ZwqzrjhjI6ABcik8pxPGllw2/ E+sRfHHAd4s2IFqMfo3SutLJVK9Zai0c+7IyApDHYdVKmZtnH7qYlA0rvLp2XdKx+m JSQkELTwQxkyQ== Message-ID: <8393137b-7eb8-4cfe-8963-ddd5ff75ef4b@kernel.org> Date: Fri, 27 Feb 2026 21:42:23 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 5/9] mm: cma: Export cma_alloc and cma_release To: Maxime Ripard , Sumit Semwal , Benjamin Gaignard , Brian Starkey , John Stultz , "T.J. Mercier" , =?UTF-8?Q?Christian_K=C3=B6nig?= , Marek Szyprowski , Robin Murphy , Andrew Morton , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-mm@kvack.org References: <20260227-dma-buf-heaps-as-modules-v2-0-454aee7e06cc@kernel.org> <20260227-dma-buf-heaps-as-modules-v2-5-454aee7e06cc@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20260227-dma-buf-heaps-as-modules-v2-5-454aee7e06cc@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 4052F40008 X-Rspamd-Server: rspam08 X-Stat-Signature: k9bwmete7qbc56om37qfw1ddj7m6w8ig X-HE-Tag: 1772224949-555170 X-HE-Meta: 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 irIBr+Oj v22FgpuDFbrWcCpWonGFLcSpmBTBwODURQhGcTM6Hi99E+LUEEygekkmQlEUmNdFM6cmzgr0VBkrjapnnT+OgTWOiIHmwt48M8JXz5h+o6R69EhKRyMM/qf6Zofbr43ByxGJz5HORXTkDkS4MjvqCPp/LCHoeFJhARv4sfJbefB1y8zVA2zEhXsoPtNQDbFB64wK53+etVjCA5mQ9N0LfuZsPgMFtMbghCQj1K1AyBeX7icKWeB2/4qHxioA3BmxmpF9ksaBW7kuRM0205EK3EgzpmH3J023PfnsgokRQuLOLOqUynDeRrVelkAPKwAlNkl6rDNlDTp+vYwaNVBaq4Wq+Qzh0fe4UQlrz Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2/27/26 14:15, Maxime Ripard wrote: > The CMA dma-buf heap uses cma_alloc() and cma_release() to allocate and > free, respectively, its CMA buffers. > > However, these functions are not exported. Since we want to turn the CMA > heap into a module, let's export them both. > > Reviewed-by: T.J. Mercier > Signed-off-by: Maxime Ripard > --- > mm/cma.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/mm/cma.c b/mm/cma.c > index 94b5da468a7d719e5144d33b06bcc7619c0fbcc9..be142b473f3bd41b9c7d8ba4397f018f6993d962 100644 > --- a/mm/cma.c > +++ b/mm/cma.c > @@ -949,10 +949,11 @@ struct page *cma_alloc(struct cma *cma, unsigned long count, > if (page) > set_pages_refcounted(page, count); > > return page; > } > +EXPORT_SYMBOL_GPL(cma_alloc); > > static struct cma_memrange *find_cma_memrange(struct cma *cma, > const struct page *pages, unsigned long count) > { > struct cma_memrange *cmr = NULL; > @@ -1025,10 +1026,11 @@ bool cma_release(struct cma *cma, const struct page *pages, > > __cma_release_frozen(cma, cmr, pages, count); > > return true; > } > +EXPORT_SYMBOL_GPL(cma_release); > > bool cma_release_frozen(struct cma *cma, const struct page *pages, > unsigned long count) > { > struct cma_memrange *cmr; > Acked-by: David Hildenbrand (Arm) -- Cheers, David