From: Oscar Salvador <osalvador@suse.de>
To: "David Hildenbrand (Arm)" <david@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Andreas Larsson <andreas@gaisler.com>,
Mike Rapoport <rppt@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
Lorenzo Stoakes <ljs@kernel.org>,
"Liam R. Howlett" <liam@infradead.org>,
Vlastimil Babka <vbabka@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-s390@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 5/8] mm/bootmem_info: stop marking the pgdat as NODE_INFO
Date: Tue, 12 May 2026 10:36:29 +0200 [thread overview]
Message-ID: <agLmjW41Sn254z_G@localhost.localdomain> (raw)
In-Reply-To: <20260511-bootmem_info_prep-v1-5-3fb0be6fc688@kernel.org>
On Mon, May 11, 2026 at 04:05:33PM +0200, David Hildenbrand (Arm) wrote:
> We removed the last user of NODE_INFO in commit 119c31caa59e ("mm/sparse:
> remove !CONFIG_SPARSEMEM_VMEMMAP leftovers for CONFIG_MEMORY_HOTPLUG").
>
> But it really was never used it besides for safety-checks ever since it was
> introduced in commit 04753278769f ("memory hotplug: register section/node
> id to free"), where we had the comment:
>
> 5) The node information like pgdat has similar issues. But, this
> will be able to be solved too by this.
> (Not implemented yet, but, remembering node id in the pages.)
>
> Of course, that never happened, and we are not planning on freeing the
> node data (pgdat/pglist_data), during memory hotunplug.
>
> So let's just stop marking the pgdat as NODE_INFO.
>
> Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Oscar Salvador <osalvador@suse.de>
--
Oscar Salvador
SUSE Labs
next prev parent reply other threads:[~2026-05-12 8:36 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 14:05 [PATCH 0/8] mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1) David Hildenbrand (Arm)
2026-05-11 14:05 ` [PATCH 1/8] sparc/mm: remove register_page_bootmem_info() David Hildenbrand (Arm)
2026-05-12 8:28 ` Oscar Salvador
2026-05-11 14:05 ` [PATCH 2/8] mm/bootmem_info: drop initialization of page->lru David Hildenbrand (Arm)
2026-05-12 8:28 ` Oscar Salvador
2026-05-11 14:05 ` [PATCH 3/8] mm/bootmem_info: stop using PG_private David Hildenbrand (Arm)
2026-05-12 8:30 ` Oscar Salvador
2026-05-11 14:05 ` [PATCH 4/8] mm/bootmem_info: remove call to kmemleak_free_part_phys() David Hildenbrand (Arm)
2026-05-12 8:34 ` Oscar Salvador
2026-05-12 8:45 ` David Hildenbrand (Arm)
2026-05-11 14:05 ` [PATCH 5/8] mm/bootmem_info: stop marking the pgdat as NODE_INFO David Hildenbrand (Arm)
2026-05-12 7:45 ` Michal Hocko
2026-05-12 7:47 ` David Hildenbrand (Arm)
2026-05-12 8:36 ` Oscar Salvador [this message]
2026-05-11 14:05 ` [PATCH 6/8] mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO David Hildenbrand (Arm)
2026-05-12 8:37 ` Oscar Salvador
2026-05-11 14:05 ` [PATCH 7/8] s390/mm: use free_reserved_page() in vmem_free_pages() David Hildenbrand (Arm)
2026-05-11 14:21 ` Heiko Carstens
2026-05-11 14:24 ` David Hildenbrand (Arm)
2026-05-11 15:22 ` Heiko Carstens
2026-05-11 15:28 ` David Hildenbrand (Arm)
2026-05-12 8:38 ` Oscar Salvador
2026-05-11 14:05 ` [PATCH 8/8] powerpc/mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE David Hildenbrand (Arm)
2026-05-12 8:43 ` Oscar Salvador
2026-05-12 7:46 ` [PATCH 0/8] mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1) Michal Hocko
2026-05-12 7:48 ` David Hildenbrand (Arm)
2026-05-12 8:45 ` Oscar Salvador
2026-05-12 8:51 ` David Hildenbrand (Arm)
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