From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D9313E2AC8; Mon, 15 Jun 2026 11:08:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781521692; cv=none; b=jqh7wQb2C51/WqwDE46pgr/0endgGO3XssXACV0oXLKRBCPg4DTu4pMYu03zCEIcQbKYEBJnjBqi1gx7EWrxVfhSmwLRpK3F5tReTOMxSRE5kQH20dZx1y+dDc+Oh3G30OecOunFx751Kg39NWK0RZ5orcgUzdESDxYtjvPQEhA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781521692; c=relaxed/simple; bh=OMfL5qaAr3g1O7EX8C8k4PihRKliEGpV7ArkSqXAmUk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=OVoTBY02C4hc2Y1M+EdHcO2j9PwizKS/E2+ZKzmsZ61+bH0OM8TkBhsylHt0Zm70fFN1zTK7uAm13Rdxm02RxgZtuilX0PkvCHA/4P6grbrWB07C4Wo12rm9KlVMhHPvXM2AGbwD6MJz1BRAJQg7uMjpm6AxKJYf/H5ww4GkfTc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BjHDpjNq; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BjHDpjNq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F19471F000E9; Mon, 15 Jun 2026 11:08:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781521691; bh=BEFhWG42X1qJS9RE3Y2xOsipVZidmJ4sZg1AbDslOq8=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=BjHDpjNqIKw8SmTSH877phGo/F0khvstQ26ztB0dDIr7Foq9/J9RR3S+28eRGcV7l OdYJOzfg17YYmKfru/SrH/SYX5mx9ggTN3CkFxc0DTs3cDrHcAZruHoK/K9+pHlDbo ilGFtZ23f6ncSaYaMN/1HtD3mgYedgNkwOOsSmn3yeg9U1HHZ3B+JtivoITdbdZKvN 4q69iCv2Acdiq/IT7naqUDaUXQJXnyq33zOaI8OQVGZfGtLkuO3qGUXwnsdpqlU7a7 P5Xwz+/3IccblaFl5BBmSWIZFL58AVv3pmPOFHtyHB7MEytjtBiKYMgUqmh++rDNH6 tbHj8A8QXnaUw== Message-ID: <18c0ec1e-95c9-4aea-b9b6-bb599ab2760f@kernel.org> Date: Mon, 15 Jun 2026 13:08:06 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 12/16] mm/slab: pass slab_alloc_context to __do_kmalloc_node() Content-Language: en-US To: Suren Baghdasaryan Cc: Harry Yoo , Hao Li , Christoph Lameter , David Rientjes , Roman Gushchin , Alexei Starovoitov , Andrew Morton , Johannes Weiner , Michal Hocko , Shakeel Butt , Alexander Potapenko , Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org References: <20260610-slab_alloc_flags-v2-0-7190909db118@kernel.org> <20260610-slab_alloc_flags-v2-12-7190909db118@kernel.org> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 6/15/26 06:58, Suren Baghdasaryan wrote: > On Wed, Jun 10, 2026 at 8:41 AM Vlastimil Babka (SUSE) > wrote: >> >> With alloc_flags usage in slab, we can replace __GFP_NO_OBJ_EXT with an >> alloc flag that prevents kmalloc recursion. For that we need a version >> of kmalloc() that takes alloc_flags and use it in places that perform >> these potentially recursive kmalloc allocations (of sheaves or obj_ext >> arrays). >> >> As a preparatory step, make __do_kmalloc_node() take a pointer to >> slab_alloc_context. This replaces the 'caller' parameter and includes >> alloc_flags which we'll make use of. > > I think you could also eliminate __do_kmalloc_node() function's "size" > parameter as it's always the same as ac->orig_size. OK, done.