From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 D9A05357D19 for ; Tue, 12 May 2026 21:17:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778620661; cv=none; b=ocxMpOXwd0hm4b7jkljKXBaxyhIspyLhGRgPRiOyyfCYDW/ochGS8CUzHUE35IZnD647UdOB+b/HN44eDfJoNb1U55vuR2Pin3WMDemjv12lrFYPy07GoAxnbvjBAtuN7Uk4I3BFem8Qky2/pah+ImaDrQSSI86SVoh6QVllDKs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778620661; c=relaxed/simple; bh=jaC+U0vSis8AuaQ3Bi/++0V1tXHEG9nuUQ1DirjDyIA=; h=Date:To:From:Subject:Message-Id; b=dH8oaf4xe27LKIaOk2nqU/b70jxvHxDvhTvD8aYzbWRQGjzm9nYPsQwayMrVO59UPwZNK8ip+j8zBYuT/flHmmH8hC4MM3x05sl+qNXSJ53NmJIqPRc763vYcJOAseon8TFZxx6PvcqDfdZEsI4lSynO1vj8MVt9FEdKTHMKTxA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=T4+G4qDq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="T4+G4qDq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 74AE6C2BCB0; Tue, 12 May 2026 21:17:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1778620661; bh=jaC+U0vSis8AuaQ3Bi/++0V1tXHEG9nuUQ1DirjDyIA=; h=Date:To:From:Subject:From; b=T4+G4qDqaxstYmlhvT+CBDqXfiKdLgPtyoSQZcxBhC8gqXFyNvy1UYPL/bVOkX7kl 6MI1flePaAtzyJxWP1O6k0MLn39Vtp8IUp+h/SNWoQ56/K+xJhgF3tIM58SMy++lWJ f4esACQSLhpyiqUa/Hiv9FTdhlnn9HtzjBZGcf/E= Date: Tue, 12 May 2026 14:17:41 -0700 To: mm-commits@vger.kernel.org,vbabka@kernel.org,svens@linux.ibm.com,surenb@google.com,rppt@kernel.org,osalvador@suse.de,npiggin@gmail.com,mpe@ellerman.id.au,mhocko@suse.com,maddy@linux.ibm.com,ljs@kernel.org,liam@infradead.org,hca@linux.ibm.com,gor@linux.ibm.com,gerald.schaefer@linux.ibm.com,davem@davemloft.net,borntraeger@linux.ibm.com,andreas@gaisler.com,agordeev@linux.ibm.com,david@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-bootmem_info-stop-marking-mem_section_usage-as-mix_section_info.patch added to mm-new branch Message-Id: <20260512211741.74AE6C2BCB0@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO has been added to the -mm mm-new branch. Its filename is mm-bootmem_info-stop-marking-mem_section_usage-as-mix_section_info.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-bootmem_info-stop-marking-mem_section_usage-as-mix_section_info.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: "David Hildenbrand (Arm)" Subject: mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO Date: Mon, 11 May 2026 16:05:34 +0200 We never free the ms->usage data for boot memory sections (see section_deactivate()). And to identify whether ms->usage was allocated from memblock, we simply identify it by looking at PG_reserved. Consequently, there is no need to mark ms->usage as MIX_SECTION_INFO. Let's just stop doing that. Link: https://lore.kernel.org/20260511-bootmem_info_prep-v1-6-3fb0be6fc688@kernel.org Signed-off-by: David Hildenbrand (Arm) Acked-by: Oscar Salvador Acked-by: Michal Hocko Cc: Alexander Gordeev Cc: Andreas Larsson Cc: Christian Borntraeger Cc: David S. Miller Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Mike Rapoport Cc: Nicholas Piggin Cc: Suren Baghdasaryan Cc: Sven Schnelle Cc: Vasily Gorbik Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/bootmem_info.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) --- a/mm/bootmem_info.c~mm-bootmem_info-stop-marking-mem_section_usage-as-mix_section_info +++ a/mm/bootmem_info.c @@ -38,10 +38,8 @@ void put_page_bootmem(struct page *page) static void __init register_page_bootmem_info_section(unsigned long start_pfn) { - unsigned long mapsize, section_nr, i; + unsigned long section_nr; struct mem_section *ms; - struct mem_section_usage *usage; - struct page *page; start_pfn = SECTION_ALIGN_DOWN(start_pfn); section_nr = pfn_to_section_nr(start_pfn); @@ -50,14 +48,6 @@ static void __init register_page_bootmem if (!preinited_vmemmap_section(ms)) register_page_bootmem_memmap(section_nr, pfn_to_page(start_pfn), PAGES_PER_SECTION); - - usage = ms->usage; - page = virt_to_page(usage); - - mapsize = PAGE_ALIGN(mem_section_usage_size()) >> PAGE_SHIFT; - - for (i = 0; i < mapsize; i++, page++) - get_page_bootmem(section_nr, page, MIX_SECTION_INFO); } void __init register_page_bootmem_info_node(struct pglist_data *pgdat) _ Patches currently in -mm which might be from david@kernel.org are mm-page_alloc-fix-initialization-of-tags-of-the-huge-zero-folio-with-init_on_free.patch mm-fix-__vm_normal_page-to-handle-missing-support-for-pmd_special-pud_special.patch sh-use-folio_mapped-instead-of-page_mapped-in-sh4_flush_cache_page.patch bpf-arena-use-page_ref_count-instead-of-page_mapped-in-arena_free_pages.patch mm-remove-page_mapped.patch sparc-mm-remove-register_page_bootmem_info.patch mm-bootmem_info-drop-initialization-of-page-lru.patch mm-bootmem_info-stop-using-pg_private.patch mm-bootmem_info-remove-call-to-kmemleak_free_part_phys.patch mm-bootmem_info-stop-marking-the-pgdat-as-node_info.patch mm-bootmem_info-stop-marking-mem_section_usage-as-mix_section_info.patch s390-mm-use-free_reserved_page-in-vmem_free_pages.patch powerpc-mm-remove-config_have_bootmem_info_node.patch