From: Muchun Song <muchun.song@linux.dev>
To: Kiryl Shutsemau <kas@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
Matthew Wilcox <willy@infradead.org>,
Usama Arif <usamaarif642@gmail.com>,
Frank van der Linden <fvdl@google.com>,
Oscar Salvador <osalvador@suse.de>,
Mike Rapoport <rppt@kernel.org>, Vlastimil Babka <vbabka@suse.cz>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Zi Yan <ziy@nvidia.com>, Baoquan He <bhe@redhat.com>,
Michal Hocko <mhocko@suse.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Jonathan Corbet <corbet@lwn.net>,
Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
Palmer Dabbelt <palmer@dabbelt.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>,
kernel-team@meta.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
loongarch@lists.linux.dev, linux-riscv@lists.infradead.org
Subject: Re: [PATCHv5 10/17] mm/hugetlb: Refactor code around vmemmap_walk
Date: Thu, 29 Jan 2026 10:51:48 +0800 [thread overview]
Message-ID: <1E5F65B7-59C0-463D-95EA-808520C14B85@linux.dev> (raw)
In-Reply-To: <20260128135500.22121-11-kas@kernel.org>
> On Jan 28, 2026, at 21:54, Kiryl Shutsemau <kas@kernel.org> wrote:
>
> To prepare for removing fake head pages, the vmemmap_walk code is being
> reworked.
>
> The reuse_page and reuse_addr variables are being eliminated. There will
> no longer be an expectation regarding the reuse address in relation to
> the operated range. Instead, the caller will provide head and tail
> vmemmap pages.
>
> Currently, vmemmap_head and vmemmap_tail are set to the same page, but
> this will change in the future.
>
> The only functional change is that __hugetlb_vmemmap_optimize_folio()
> will abandon optimization if memory allocation fails.
>
> Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Thanks.
next prev parent reply other threads:[~2026-01-29 2:52 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-28 13:54 [PATCHv5 00/17] mm: Eliminate fake head pages from vmemmap optimization Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 01/17] mm: Move MAX_FOLIO_ORDER definition to mmzone.h Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 02/17] mm: Change the interface of prep_compound_tail() Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 03/17] mm: Rename the 'compound_head' field in the 'struct page' to 'compound_info' Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 04/17] mm: Move set/clear_compound_head() next to compound_head() Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 05/17] riscv/mm: Align vmemmap to maximal folio size Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 06/17] LoongArch/mm: " Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 07/17] mm: Rework compound_head() for power-of-2 sizeof(struct page) Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 08/17] mm: Make page_zonenum() use head page Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 09/17] mm/sparse: Check memmap alignment for compound_info_has_mask() Kiryl Shutsemau
2026-01-29 3:00 ` Muchun Song
2026-01-29 3:10 ` Zi Yan
2026-01-29 3:23 ` Muchun Song
2026-01-29 3:29 ` Zi Yan
2026-01-29 7:03 ` Muchun Song
2026-01-29 17:33 ` Zi Yan
2026-01-28 13:54 ` [PATCHv5 10/17] mm/hugetlb: Refactor code around vmemmap_walk Kiryl Shutsemau
2026-01-29 2:51 ` Muchun Song [this message]
2026-01-28 13:54 ` [PATCHv5 11/17] mm/hugetlb: Remove fake head pages Kiryl Shutsemau
2026-01-29 6:54 ` Muchun Song
2026-01-28 13:54 ` [PATCHv5 12/17] mm: Drop fake head checks Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 13/17] hugetlb: Remove VMEMMAP_SYNCHRONIZE_RCU Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 14/17] mm/hugetlb: Remove hugetlb_optimize_vmemmap_key static key Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 15/17] mm: Remove the branch from compound_head() Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 16/17] hugetlb: Update vmemmap_dedup.rst Kiryl Shutsemau
2026-01-28 13:54 ` [PATCHv5 17/17] mm/slab: Use compound_head() in page_slab() Kiryl Shutsemau
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