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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2212DC64ED6 for ; Sun, 26 Feb 2023 23:49:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229650AbjBZXtG (ORCPT ); Sun, 26 Feb 2023 18:49:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229713AbjBZXtA (ORCPT ); Sun, 26 Feb 2023 18:49:00 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 563AF903B for ; Sun, 26 Feb 2023 15:48:53 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 04D96B80BE8 for ; Sun, 26 Feb 2023 23:48:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 98EE2C433D2; Sun, 26 Feb 2023 23:48:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1677455330; bh=QrHWJ2qOXhAA3Pr+ioOFaF4nH3NXpBraO6YytzoUFR0=; h=Date:To:From:Subject:From; b=EfOqlYuBzyc/CushkoEDf3+S1hxb+yMkcpMKLcv39RvQcsmN2GZZ2anA1X9YOceBX 1/ssPoYtRXvAagDki6XX+Kx0XqSJSdFzPhY9zZ+CsTBia3DH08/9+E5xjgsT7UYcSj nOMLqh918KJ+1AteOR6eca+KIbRY3NgceJiNevfs= Date: Sun, 26 Feb 2023 15:48:50 -0800 To: mm-commits@vger.kernel.org, willy@infradead.org, tonyb@cybernetics.com, hch@lst.de, kbusch@kernel.org, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] dmapool-dont-memset-on-free-twice.patch removed from -mm tree Message-Id: <20230226234850.98EE2C433D2@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: dmapool: don't memset on free twice has been removed from the -mm tree. Its filename was dmapool-dont-memset-on-free-twice.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Keith Busch Subject: dmapool: don't memset on free twice Date: Thu, 26 Jan 2023 13:51:23 -0800 If debug is enabled, dmapool will poison the range, so no need to clear it to 0 immediately before writing over it. Link: https://lkml.kernel.org/r/20230126215125.4069751-11-kbusch@meta.com Signed-off-by: Keith Busch Reviewed-by: Christoph Hellwig Cc: Matthew Wilcox Cc: Tony Battersby Signed-off-by: Andrew Morton --- --- a/mm/dmapool.c~dmapool-dont-memset-on-free-twice +++ a/mm/dmapool.c @@ -160,6 +160,8 @@ static void pool_check_block(struct dma_ static bool pool_page_err(struct dma_pool *pool, struct dma_page *page, void *vaddr, dma_addr_t dma) { + if (want_init_on_free()) + memset(vaddr, 0, pool->size); return false; } @@ -441,8 +443,6 @@ void dma_pool_free(struct dma_pool *pool return; } - if (want_init_on_free()) - memset(vaddr, 0, pool->size); if (pool_page_err(pool, page, vaddr, dma)) { spin_unlock_irqrestore(&pool->lock, flags); return; _ Patches currently in -mm which might be from kbusch@kernel.org are