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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A186FCC9DB for ; Tue, 10 Mar 2026 08:53:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 72EB310E693; Tue, 10 Mar 2026 08:53:24 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="Bv/r3H18"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id E009B10E695 for ; Tue, 10 Mar 2026 08:53:21 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id C5CAC40B9A; Tue, 10 Mar 2026 08:53:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4C7DC2BC87; Tue, 10 Mar 2026 08:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773132801; bh=Ls3uEmiMRoW8ba83sAqv7xQmcKvLyhiUZFpckfPFfz0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Bv/r3H18pLal+VtpNQoVn3AgmHGQcDCzp3edTyBNOpDasg4r7YPSYTWn+ZPpuk/3e 9GqiDThQfHcwb+NnN/MbNmUDebp67dx+FSG9gRyKwGAzvTtUneS1B2k9zgVLo0AuMT Ux2IH1yXgIp2rKLDdnJELZZ+MNpkyKFJdVJryXsTmwZ7IYaV9rLEyhX0NToe900Ioh NY8GO5Kzk2gSlbLrgaFrgha8JFHnTzOLS14qvNALADwBauUrHZ/QtYBcvK40QRt1t+ FZ7fTgm9MkMZF5zKAjVIkhnFj718sziWdF3ObRnbaPdka1LSVps/0iRtKdVRVr2lvU DX1FWQzLGZehA== From: Linus Walleij Date: Tue, 10 Mar 2026 09:53:12 +0100 Subject: [PATCH v2 2/2] dma-buf: heaps: Clear CMA highages using helper MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260310-cma-heap-clear-pages-v2-2-ecbbed3d7e6d@kernel.org> References: <20260310-cma-heap-clear-pages-v2-0-ecbbed3d7e6d@kernel.org> In-Reply-To: <20260310-cma-heap-clear-pages-v2-0-ecbbed3d7e6d@kernel.org> To: Sumit Semwal , Benjamin Gaignard , Brian Starkey , John Stultz , "T.J. Mercier" , =?utf-8?q?Christian_K=C3=B6nig?= Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Linus Walleij X-Mailer: b4 0.14.3 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Currently the CMA allocator clears highmem pages using kmap()->clear_page()->kunmap(), but there is a helper static inline in that does the same for us so use clear_highpage() instead of open coding this. Suggested-by: T.J. Mercier Signed-off-by: Linus Walleij --- drivers/dma-buf/heaps/cma_heap.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/dma-buf/heaps/cma_heap.c b/drivers/dma-buf/heaps/cma_heap.c index f0bacf25ed9d..92865786cfc9 100644 --- a/drivers/dma-buf/heaps/cma_heap.c +++ b/drivers/dma-buf/heaps/cma_heap.c @@ -329,10 +329,7 @@ static struct dma_buf *cma_heap_allocate(struct dma_heap *heap, struct page *page = cma_pages; while (nr_clear_pages > 0) { - void *vaddr = kmap_local_page(page); - - clear_page(vaddr); - kunmap_local(vaddr); + clear_highpage(page); /* * Avoid wasting time zeroing memory if the process * has been killed by SIGKILL. -- 2.53.0