From: "Vlastimil Babka (SUSE)" <vbabka@kernel.org>
To: Suren Baghdasaryan <surenb@google.com>
Cc: Harry Yoo <harry@kernel.org>, Hao Li <hao.li@linux.dev>,
Christoph Lameter <cl@gentwo.org>,
David Rientjes <rientjes@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Alexei Starovoitov <ast@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>,
Shakeel Butt <shakeel.butt@linux.dev>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Marco Elver <elver@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
kasan-dev@googlegroups.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org
Subject: Re: [PATCH v2 02/16] mm/slab: do not init any kfence objects on allocation
Date: Mon, 15 Jun 2026 10:52:50 +0200 [thread overview]
Message-ID: <e4496401-6529-4f64-ab5c-84f737cb6798@kernel.org> (raw)
In-Reply-To: <CAJuCfpH8g9mNGV_ke-mhVZ=J9J05PZg-ozPTA=5WQrm_eViVpA@mail.gmail.com>
On 6/15/26 03:28, Suren Baghdasaryan wrote:
> On Thu, Jun 11, 2026 at 9:37 AM Vlastimil Babka (SUSE)
> <vbabka@kernel.org> wrote:
>>
>> On 6/11/26 17:11, Harry Yoo wrote:
>> >
>> >> From 3a1c4398ce9f361a4e6f4d9946eab6237eea89c2 Mon Sep 17 00:00:00 2001
>> >> From: "Vlastimil Babka (SUSE)" <vbabka@kernel.org>
>> >> Date: Wed, 10 Jun 2026 17:40:04 +0200
>> >> Subject: [PATCH] mm/slab: do not init any kfence objects on allocation
>> >>
>> >> When init (zeroing) on allocation is requested, for kmalloc() we
>> >> generally have to zero the full object size even if a smaller size is
>> >> requested, in order to provide krealloc()'s __GFP_ZERO guarantees.
>> >>
>> >> When we end up allocating a kfence object, kfence perfoms the zeroing on
>> >
>> > nit: perfoms -> performs
>>
>> Fixed.
>>
>> >> its own because has its own redzone beyond the requested size. Thus
>
> nit: s/because has/because it has
Fixed.
> Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Thanks!
next prev parent reply other threads:[~2026-06-15 8:52 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-10 15:40 [PATCH v2 00/16] mm/slab: introduce alloc_flags and slab_alloc_context Vlastimil Babka (SUSE)
2026-06-10 15:40 ` [PATCH v2 01/16] mm/slab: do not limit zeroing to orig_size when only red zoning is enabled Vlastimil Babka (SUSE)
2026-06-11 4:28 ` Harry Yoo
2026-06-12 3:47 ` Hao Li
2026-06-10 15:40 ` [PATCH v2 02/16] mm/slab: do not init any kfence objects on allocation Vlastimil Babka (SUSE)
2026-06-11 3:19 ` Harry Yoo
2026-06-11 8:34 ` Vlastimil Babka (SUSE)
2026-06-11 14:47 ` Vlastimil Babka (SUSE)
2026-06-11 15:11 ` Harry Yoo
2026-06-11 16:37 ` Vlastimil Babka (SUSE)
2026-06-15 1:28 ` Suren Baghdasaryan
2026-06-15 8:52 ` Vlastimil Babka (SUSE) [this message]
2026-06-10 15:40 ` [PATCH v2 03/16] mm/slab: stop inlining __slab_alloc_node() Vlastimil Babka (SUSE)
2026-06-12 3:48 ` Hao Li
2026-06-15 1:33 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 04/16] mm/slab: introduce slab_alloc_context Vlastimil Babka (SUSE)
2026-06-11 4:49 ` Harry Yoo
2026-06-12 3:10 ` Hao Li
2026-06-12 9:51 ` Vlastimil Babka (SUSE)
2026-06-15 1:41 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 05/16] mm/slab: introduce alloc_flags and SLAB_ALLOC_TRYLOCK Vlastimil Babka (SUSE)
2026-06-11 4:57 ` Harry Yoo
2026-06-11 6:40 ` Harry Yoo
2026-06-11 8:51 ` Vlastimil Babka (SUSE)
2026-06-12 3:49 ` Hao Li
2026-06-15 2:00 ` Suren Baghdasaryan
2026-06-15 2:01 ` Suren Baghdasaryan
2026-06-15 2:16 ` Alexei Starovoitov
2026-06-15 9:02 ` Vlastimil Babka (SUSE)
2026-06-10 15:40 ` [PATCH v2 06/16] mm/slab: add alloc_flags to slab_alloc_context Vlastimil Babka (SUSE)
2026-06-11 5:06 ` Harry Yoo
2026-06-12 3:50 ` Hao Li
2026-06-15 2:20 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 07/16] mm/slab: replace struct partial_context with slab_alloc_context Vlastimil Babka (SUSE)
2026-06-11 6:05 ` Harry Yoo
2026-06-15 2:36 ` Suren Baghdasaryan
2026-06-15 10:01 ` Vlastimil Babka (SUSE)
2026-06-12 4:04 ` Hao Li
2026-06-12 9:56 ` Vlastimil Babka (SUSE)
2026-06-10 15:40 ` [PATCH v2 08/16] mm/slab: pass alloc_flags to new slab allocation Vlastimil Babka (SUSE)
2026-06-11 7:52 ` Harry Yoo
2026-06-15 10:14 ` Vlastimil Babka (SUSE)
2026-06-12 5:26 ` Hao Li
2026-06-12 9:59 ` Vlastimil Babka (SUSE)
2026-06-15 4:10 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 09/16] mm/slab: pass alloc_flags through slab_post_alloc_hook() chain Vlastimil Babka (SUSE)
2026-06-15 4:35 ` Suren Baghdasaryan
2026-06-15 11:33 ` Vlastimil Babka (SUSE)
2026-06-10 15:40 ` [PATCH v2 10/16] mm/slab: replace slab_alloc_node() parameters with slab_alloc_context Vlastimil Babka (SUSE)
2026-06-12 5:28 ` Hao Li
2026-06-15 4:39 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 11/16] mm/slab: allow kmem_cache_alloc_bulk() with any gfp flags Vlastimil Babka (SUSE)
2026-06-12 3:21 ` Hao Li
2026-06-12 10:05 ` Vlastimil Babka (SUSE)
2026-06-15 4:48 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 12/16] mm/slab: pass slab_alloc_context to __do_kmalloc_node() Vlastimil Babka (SUSE)
2026-06-12 5:34 ` Hao Li
2026-06-15 4:58 ` Suren Baghdasaryan
2026-06-15 11:08 ` Vlastimil Babka (SUSE)
2026-06-10 15:40 ` [PATCH v2 13/16] mm/slab: allow __GFP_NOMEMALLOC and __GFP_NOWARN for kmalloc_nolock() Vlastimil Babka (SUSE)
2026-06-12 6:57 ` Hao Li
2026-06-15 5:06 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 14/16] mm/slab: introduce kmalloc_flags() Vlastimil Babka (SUSE)
2026-06-12 8:02 ` Hao Li
2026-06-15 5:14 ` Suren Baghdasaryan
2026-06-10 15:40 ` [PATCH v2 15/16] mm/slab: remove __GFP_NO_OBJ_EXT usage from alloc_slab_obj_exts() Vlastimil Babka (SUSE)
2026-06-11 16:28 ` Vlastimil Babka (SUSE)
2026-06-12 6:54 ` Hao Li
2026-06-12 10:17 ` Vlastimil Babka (SUSE)
2026-06-12 11:29 ` Hao Li
2026-06-15 5:38 ` Suren Baghdasaryan
2026-06-15 11:11 ` Vlastimil Babka (SUSE)
2026-06-10 15:40 ` [PATCH v2 16/16] mm/slab: replace __GFP_NO_OBJ_EXT with SLAB_ALLOC_NO_RECURSE for sheaves Vlastimil Babka (SUSE)
2026-06-12 8:16 ` Hao Li
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