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 3C659C79F89 for ; Mon, 7 Sep 2026 07:27:25 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 38BD06B009F; Mon, 7 Sep 2026 03:27:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 363A86B00A1; Mon, 7 Sep 2026 03:27:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 27AE56B00A2; Mon, 7 Sep 2026 03:27:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 0969E6B009F for ; Mon, 7 Sep 2026 03:27:24 -0400 (EDT) Received: from smtpin28.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 948051A0646 for ; Mon, 7 Sep 2026 07:27:23 +0000 (UTC) X-FDA: 85186135566.28.9B76E15 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf28.hostedemail.com (Postfix) with ESMTP id 0DAD9C000E for ; Mon, 7 Sep 2026 07:27:21 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=kaxCEAdx; spf=pass (imf28.hostedemail.com: domain of ljs@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1788766042; b=7j24Wasvm/TsT4A5SkNHq7TA1Tpg7ngTCsiXkPVFG08tFIAIb0vzzH7SdNrlvQYADmVJub H+gmZAQ9YC4Iga+AdbBBvPCESQ1PUSrKjfS1yJ1jMzDRInrfUPQQ0FMj1qwxyLXhMoyfIX 3sO1BhJPLy3GwfFkv678tLF9Oa+o3XA= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=kaxCEAdx; spf=pass (imf28.hostedemail.com: domain of ljs@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=ljs@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=1788766042; 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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=DJZ2ds+Ren32Zxnv+Y2iOl0ccIRLQlyRg2ueg6Z/dX8=; b=AhcR2reHTpM/qgoMpMUnEZuWm4YdMpWu0ILa1LKgC+8irFbUr9VShPkTnr44+MITQ2aH1Z IyMIAVWrVUcPTiDlRmaL6jA8wi8dB31Xlbdz6UiutAtldkUdGisq/MA5ABgNg4+VKtAVxE yPLx7MEY55ovKYzut14FnviPSyca3qg= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 81458601F9; Mon, 7 Sep 2026 07:27:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E61351F00A3A; Mon, 7 Sep 2026 07:27:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788766041; bh=DJZ2ds+Ren32Zxnv+Y2iOl0ccIRLQlyRg2ueg6Z/dX8=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=kaxCEAdxYg9CRE8pfmp7dmb4yrOXZ0ZC0VXTl4O11IZ+vnzTAaLoQnEYBG8txsJd7 0egL71T1O2BcU6hLS/M/KYtDjOCrh0b87Q+9Kbj61wVyC2iOPMPCdzhaE0c0TAaWyY u58yA8ZSSZz3aUxOesafDwytF8H5ivSl+ZGX/pcche0IbTsucjoNdxKsDBZGARFrdC HQsMMdwfZnaubqShkZv3kCPIousAWG8qeWPtl3U/QHH/y8k+d22Onf6Bysru0Bx6t/ AirDXD9d0Q1nkCw+IoNjKrHpCRdC0RXTuKzCvB/9Z6l6vslhBzAXX6KLGxlHZZT4y3 q0Mva3MGcidjQ== Date: Mon, 7 Sep 2026 08:27:15 +0100 From: "Lorenzo Stoakes (ARM)" To: Mike Rapoport Cc: Andrew Morton , David Hildenbrand , Jonathan Corbet , "Liam R. Howlett" , Michal Hocko , Randy Dunlap , SJ Park , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] docs/core-api: memory-allocation: clarify when to use kzalloc_obj and kzalloc Message-ID: References: <20260907063654.2248617-1-rppt@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260907063654.2248617-1-rppt@kernel.org> X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 0DAD9C000E X-Stat-Signature: o7j145391mum19c9ckjq51xmetxau4wn X-HE-Tag: 1788766041-547315 X-HE-Meta: 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 v5/yeHVp eb3mn1a3N4E9qWM6T0wVdp0BxPmYDOmSLQYaCv7/3SmJaWIR600efe4PPhL4auh8sGUrAxQ80vjRyGNt1vU5WnvUyZsSWoKyIRjTKAj1dhIX7yziMqkr7cTbSBo0bBOX2ZO5xnROcN9n/6Gv5nBuUx5Xbn4Df9ZeOZ4UqWPHhHq592W8wqtEpe1HSIThYDIlehNQc3UbGqn+Qll1dpooqhemVj0OYQ6GYbQbUZytkLCSwY5F+MvQY4YjdpJXlJVQoK5poK/HfwFwiITyVTyfc+fWwiZaANqeMWB0dpmwX4Fd87ygYq96Ri+jWZ1Pr1tgxspd9 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Sep 07, 2026 at 09:36:54AM +0300, Mike Rapoport wrote: > From: "Mike Rapoport (Microsoft)" > > Make it abundantly clear that in the most cases objects should be > allocated with kzalloc_obj() and buffers should be allocated with > kzalloc(). > > Signed-off-by: Mike Rapoport (Microsoft) LGTM so Acked-by: Lorenzo Stoakes (ARM) > --- > > This applies on top of "docs/core-api: memory-allocation: add > k[mz]alloc_obj() and clarify kmalloc" series > > https://lore.kernel.org/all/20260902-docs-memalloc-guide-v2-0-218c1a4dcb80@kernel.org > > Documentation/core-api/memory-allocation.rst | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/Documentation/core-api/memory-allocation.rst b/Documentation/core-api/memory-allocation.rst > index 823f7fa57429b..648222b6c8576 100644 > --- a/Documentation/core-api/memory-allocation.rst > +++ b/Documentation/core-api/memory-allocation.rst > @@ -23,12 +23,14 @@ answer, although very likely you should use > > kzalloc_obj(); > > -or > +if you need memory for an object and > > :: > > kzalloc(, GFP_KERNEL); > > +if you need memory for a buffer. > + > Of course there are cases when other allocation APIs and different GFP > flags must be used. > > > base-commit: d7dd88ed029164fe0a959e126d0ce18dd3719f89 > -- > 2.53.0 > -- Cheers, Lorenzo