Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Fri, 29 Apr 2022 09:32:21 +0200 (CEST)
From:   Christoph Lameter <cl@gentwo.de>
To:     andrey.konovalov@linux.dev
cc:     Andrew Morton <akpm@linux-foundation.org>,
        Andrey Konovalov <andreyknvl@gmail.com>,
        Pekka Enberg <penberg@kernel.org>,
        David Rientjes <rientjes@google.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        Peter Collingbourne <pcc@google.com>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org,
        Andrey Konovalov <andreyknvl@google.com>
Subject: Re: [PATCH 1/2] mm: slab: fix comment for ARCH_KMALLOC_MINALIGN
In-Reply-To: <fe1ca7a25a054b61d1038686d07569416e287e7b.1651161548.git.andreyknvl@google.com>
Message-ID: <alpine.DEB.2.22.394.2204290930190.317849@gentwo.de>
References: <fe1ca7a25a054b61d1038686d07569416e287e7b.1651161548.git.andreyknvl@google.com>
User-Agent: Alpine 2.22 (DEB 394 2020-01-19)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Precedence: bulk

On Thu, 28 Apr 2022, andrey.konovalov@linux.dev wrote:

> From: Andrey Konovalov <andreyknvl@google.com>
>
> The comment next to the ARCH_KMALLOC_MINALIGN definition says that
> ARCH_KMALLOC_MINALIGN can be defined in arch headers. This is incorrect:
> it's actually ARCH_DMA_MINALIGN that can be defined there.

The section is talking about kmalloc and not general kmem_cache_alloc()
and there was the intention of separating the alignment requirements
between these two groups of caches in the slab allocators.