From: Harry Yoo <harry@kernel.org>
To: "Vlastimil Babka (SUSE)" <vbabka@kernel.org>
Cc: Hao Li <hao.li@linux.dev>, Christoph Lameter <cl@gentwo.org>,
David Rientjes <rientjes@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Suren Baghdasaryan <surenb@google.com>,
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>,
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 v3 15/15] mm/slab: replace __GFP_NO_OBJ_EXT with SLAB_ALLOC_NO_RECURSE for sheaves
Date: Wed, 17 Jun 2026 23:36:58 +0900 [thread overview]
Message-ID: <918fae64-1323-46ea-a86e-3c847a52f174@kernel.org> (raw)
In-Reply-To: <20260615-slab_alloc_flags-v3-15-ce1146d140fb@kernel.org>
[-- Attachment #1.1: Type: text/plain, Size: 972 bytes --]
On 6/15/26 8:54 PM, Vlastimil Babka (SUSE) wrote:
> Finish the switch away from __GFP_NO_OBJ_EXT by replacing it with
> SLAB_ALLOC_NO_RECURSE when allocating empty sheaves. Pass alloc_flags to
> [__]alloc_empty_sheaf(). Callers that can't be part of a recursive
> kmalloc() chain simply pass SLAB_ALLOC_DEFAULT. Use kmalloc_flags()
> instead of kzalloc() for allocating the sheaf.
>
> With that we can finalize the removal the __GFP_NO_OBJ_EXT handling from
> obj_ext allocations as well, leaving only SLAB_ALLOC_NO_RECURSE in
> place.
>
> This leaves __GFP_NO_OBJ_EXT with no users in slab, so stop allowing the
> flag in kmalloc_nolock().
>
> Link: https://patch.msgid.link/20260610-slab_alloc_flags-v2-16-7190909db118@kernel.org
> Reviewed-by: Hao Li <hao.li@linux.dev>
> Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
> ---
Looks good to me,
Reviewed-by: Harry Yoo (Oracle) <harry@kernel.org>
--
Cheers,
Harry / Hyeonggon
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 228 bytes --]
next prev parent reply other threads:[~2026-06-17 14:37 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-15 11:54 [PATCH v3 00/15] mm/slab: introduce alloc_flags and slab_alloc_context Vlastimil Babka (SUSE)
2026-06-15 11:54 ` [PATCH v3 01/15] mm/slab: do not init any kfence objects on allocation Vlastimil Babka (SUSE)
2026-06-17 2:44 ` Hao Li
2026-06-17 11:52 ` Marco Elver
2026-06-15 11:54 ` [PATCH v3 02/15] mm/slab: stop inlining __slab_alloc_node() Vlastimil Babka (SUSE)
2026-06-15 11:54 ` [PATCH v3 03/15] mm/slab: introduce slab_alloc_context Vlastimil Babka (SUSE)
2026-06-17 2:52 ` Hao Li
2026-06-15 11:54 ` [PATCH v3 04/15] mm/slab: introduce alloc_flags and SLAB_ALLOC_NOLOCK Vlastimil Babka (SUSE)
2026-06-15 11:54 ` [PATCH v3 05/15] mm/slab: replace struct partial_context with slab_alloc_context Vlastimil Babka (SUSE)
2026-06-15 11:54 ` [PATCH v3 06/15] mm/slab: add alloc_flags to slab_alloc_context Vlastimil Babka (SUSE)
2026-06-17 14:40 ` Suren Baghdasaryan
2026-06-15 11:54 ` [PATCH v3 07/15] mm/slab: pass alloc_flags to new slab allocation Vlastimil Babka (SUSE)
2026-06-16 7:07 ` Harry Yoo
2026-06-15 11:54 ` [PATCH v3 08/15] mm/slab: pass alloc_flags through slab_post_alloc_hook() chain Vlastimil Babka (SUSE)
2026-06-16 7:36 ` Harry Yoo
2026-06-17 14:48 ` Suren Baghdasaryan
2026-06-15 11:54 ` [PATCH v3 09/15] mm/slab: replace slab_alloc_node() parameters with slab_alloc_context Vlastimil Babka (SUSE)
2026-06-17 9:24 ` Harry Yoo
2026-06-15 11:54 ` [PATCH v3 10/15] mm/slab: allow kmem_cache_alloc_bulk() with any gfp flags Vlastimil Babka (SUSE)
2026-06-17 9:28 ` Harry Yoo
2026-06-15 11:54 ` [PATCH v3 11/15] mm/slab: pass slab_alloc_context to __do_kmalloc_node() Vlastimil Babka (SUSE)
2026-06-17 9:36 ` Harry Yoo
2026-06-17 14:52 ` Suren Baghdasaryan
2026-06-15 11:54 ` [PATCH v3 12/15] mm/slab: allow __GFP_NOMEMALLOC and __GFP_NOWARN for kmalloc_nolock() Vlastimil Babka (SUSE)
2026-06-17 9:41 ` Harry Yoo
2026-06-15 11:54 ` [PATCH v3 13/15] mm/slab: introduce kmalloc_flags() Vlastimil Babka (SUSE)
2026-06-17 11:16 ` Harry Yoo
2026-06-15 11:54 ` [PATCH v3 14/15] mm/slab: remove __GFP_NO_OBJ_EXT usage from alloc_slab_obj_exts() Vlastimil Babka (SUSE)
2026-06-17 13:56 ` Harry Yoo
2026-06-17 14:36 ` Vlastimil Babka (SUSE)
2026-06-17 14:40 ` Harry Yoo
2026-06-17 14:56 ` Vlastimil Babka (SUSE)
2026-06-17 15:08 ` Suren Baghdasaryan
2026-06-15 11:54 ` [PATCH v3 15/15] mm/slab: replace __GFP_NO_OBJ_EXT with SLAB_ALLOC_NO_RECURSE for sheaves Vlastimil Babka (SUSE)
2026-06-17 14:36 ` Harry Yoo [this message]
2026-06-17 15:10 ` Suren Baghdasaryan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=918fae64-1323-46ea-a86e-3c847a52f174@kernel.org \
--to=harry@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=ast@kernel.org \
--cc=cgroups@vger.kernel.org \
--cc=cl@gentwo.org \
--cc=dvyukov@google.com \
--cc=elver@google.com \
--cc=glider@google.com \
--cc=hannes@cmpxchg.org \
--cc=hao.li@linux.dev \
--cc=kasan-dev@googlegroups.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=rientjes@google.com \
--cc=roman.gushchin@linux.dev \
--cc=shakeel.butt@linux.dev \
--cc=surenb@google.com \
--cc=vbabka@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox