From patchwork Mon Nov 9 11:06:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1396690 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=SLmwWdYm; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CV7XF1SYzz9sVZ for ; Mon, 9 Nov 2020 22:08:29 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729535AbgKILHE (ORCPT ); Mon, 9 Nov 2020 06:07:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729491AbgKILHD (ORCPT ); Mon, 9 Nov 2020 06:07:03 -0500 Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 742B6C0617A7 for ; Mon, 9 Nov 2020 03:07:02 -0800 (PST) Received: by mail-wr1-x444.google.com with SMTP id d12so6699291wrr.13 for ; Mon, 09 Nov 2020 03:07:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2uLK4LNo7fJGEwA0NXfYaAQzvkTW8/WkGHuVu61FcZ4=; b=SLmwWdYmA2Su0OyL+219YDZzeVXOkzpy5gortE6aVnwng+6cHrJzhAQJzNByqcPbPZ isbE6V3Lb9JgstbUlm/PZvCpNxelIDnwHLTINtWIzMAUAJP+6YLk/AWf+cW33RVJOvLq 4EQlOOLu8zd+gVrxvr0w9485FxLsZ4uiV1jlwgDMS4E7kDkszYjvid4w0z806pFvA1dO U+nHioEgRrLmfLyR8tH/H/Ge3+qH76H09ubPywZEg/u4KcGzZ6YzgnyKXZKxxyWIo1cW FT3Tuwvxb43JhyG0QmKnG/8uRrjp2S/bO4jEisldpzuA8EOA5eJuEswwYg/l6KV0K70j EAjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2uLK4LNo7fJGEwA0NXfYaAQzvkTW8/WkGHuVu61FcZ4=; b=apqh1CNMLLiqhTKZA9UW4O2rdBN7PutIpk+9YpuCH3rXELh1UrPUeyWysaZFV6S4Fi ynZE3RU/ylJPmqRpQe+98w8geEhOc+8ebXQE6aQ9MJmlqsSquPjnaMhL6tzxh6kobgul aFdBk5HUDS4NC8zU80QACdRuZ1eA3N14LHxyX/ob74A8VqTBoVg9CYLX5Vc2OPYmsUt5 Mr9ryB7HwWc2NYEeHmOGMtNF48RHc6h2ua3756+gPlq5PEABb93jf2fBYPqrOjQHKGjx 9yBYsBkFlQiUR/M889QxIep6nFjs7Z6sxQspUHcCQa7PLVPVPx8nOynczMsQwJtC4TaG gr3g== X-Gm-Message-State: AOAM530RC5SGXLJNbJ7569T6CjpmKaH37KQNoRQn4ZKWCMN6eIbFG85B 8LaM4kiJTI2uu64C6nujOHLv+g== X-Google-Smtp-Source: ABdhPJwC1VmwvlzIaWje0LLMyGfNJlg7DPW07nQhl2YWyOW+KS6oIpzkSUqvI/A14QOWWdg2F+P+tA== X-Received: by 2002:adf:9b98:: with SMTP id d24mr16961027wrc.17.1604920021208; Mon, 09 Nov 2020 03:07:01 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-190-206.w2-15.abo.wanadoo.fr. [2.15.39.206]) by smtp.gmail.com with ESMTPSA id d3sm12815582wre.91.2020.11.09.03.06.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 03:07:00 -0800 (PST) From: Bartosz Golaszewski To: Andy Shevchenko , Sumit Semwal , Gustavo Padovan , =?utf-8?q?Christian_K=C3=B6nig?= , Mauro Carvalho Chehab , Borislav Petkov , Tony Luck , James Morse , Robert Richter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Alexander Shishkin , Linus Walleij , "Michael S . Tsirkin" , Jason Wang , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Jaroslav Kysela , Takashi Iwai Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-gpio@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org, Bartosz Golaszewski Subject: [PATCH v3 1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO Date: Mon, 9 Nov 2020 12:06:46 +0100 Message-Id: <20201109110654.12547-2-brgl@bgdev.pl> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl> References: <20201109110654.12547-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Bartosz Golaszewski __GFP_ZERO is ignored by krealloc() (unless we fall-back to kmalloc() path, in which case it's honored). Point that out in the kerneldoc. Signed-off-by: Bartosz Golaszewski --- mm/slab_common.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/slab_common.c b/mm/slab_common.c index f9ccd5dc13f3..d6df73f79204 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1091,9 +1091,9 @@ static __always_inline void *__do_krealloc(const void *p, size_t new_size, * @flags: the type of memory to allocate. * * The contents of the object pointed to are preserved up to the - * lesser of the new and old sizes. If @p is %NULL, krealloc() - * behaves exactly like kmalloc(). If @new_size is 0 and @p is not a - * %NULL pointer, the object pointed to is freed. + * lesser of the new and old sizes (__GFP_ZERO flag is effectively ignored). + * If @p is %NULL, krealloc() behaves exactly like kmalloc(). If @new_size + * is 0 and @p is not a %NULL pointer, the object pointed to is freed. * * Return: pointer to the allocated memory or %NULL in case of error */