From: Konstantin Khorenko <khorenko@virtuozzo.com>
To: "David Hildenbrand (Arm)" <david@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Zi Yan <ziy@nvidia.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
"Liam R. Howlett" <liam@infradead.org>,
Nico Pache <nico.pache@linux.dev>,
Ryan Roberts <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>,
Barry Song <baohua@kernel.org>, Lance Yang <lance.yang@linux.dev>,
Usama Arif <usama.arif@linux.dev>,
Kiryl Shutsemau <kas@kernel.org>, Peter Xu <peterx@redhat.com>
Cc: "Alex Williamson" <alex@shazbot.org>,
kvm@vger.kernel.org,
"Loïc Molinari" <loic.molinari@collabora.com>,
dri-devel@lists.freedesktop.org,
"Madhavan Srinivasan" <maddy@linux.ibm.com>,
"Ritesh Harjani (IBM)" <ritesh.list@gmail.com>,
linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, "Jason Gunthorpe" <jgg@ziepe.ca>,
stable@vger.kernel.org
Subject: Re: [PATCH v3 1/2] mm/huge_memory: recheck a special PMD under the lock in copy_huge_pmd()
Date: Wed, 21 Oct 2026 22:44:51 +0200 [thread overview]
Message-ID: <7b4b5d25-d955-45d7-aeab-eedce9f40bd1@virtuozzo.com> (raw)
In-Reply-To: <973fd409-64b7-4c62-82e1-c75c784b80f7@kernel.org>
On 10/21/26 10:37, David Hildenbrand (Arm) wrote:
<snip>> We should likely do exactly what we do in the PTE path: copy PMDs that reference
> file folios. See copy_present_ptes().
Done in v4: copy_huge_pmd() now decides under the PTL with
vm_normal_page_pmd() and copies file THPs like copy_present_ptes():
https://lore.kernel.org/all/20261021-b4-prep-vstor-149847-copy_huge_pmd-recheck-special-pmd-v4-0-66f00b7a564c@virtuozzo.com/
Thank you for the review!
Best regards,
--
Konstantin Khorenko
next prev parent reply other threads:[~2026-10-21 20:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-14 15:46 [PATCH v3 0/2] mm/huge_memory: fix the copy of special PMDs at fork Konstantin Khorenko
2026-10-14 15:46 ` [PATCH v3 1/2] mm/huge_memory: recheck a special PMD under the lock in copy_huge_pmd() Konstantin Khorenko
2026-10-15 14:14 ` David Hildenbrand (Arm)
2026-10-16 13:05 ` Konstantin Khorenko
2026-10-21 8:37 ` David Hildenbrand (Arm)
2026-10-21 20:44 ` Konstantin Khorenko [this message]
2026-10-14 15:46 ` [PATCH v3 2/2] mm/huge_memory: deposit a page table for a special PMD copied by fork Konstantin Khorenko
2026-10-15 14:15 ` David Hildenbrand (Arm)
2026-10-14 15:57 ` [PATCH v3 0/2] mm/huge_memory: fix the copy of special PMDs at fork Zi Yan
2026-10-14 16:04 ` Lance Yang
2026-10-15 11:49 ` Konstantin Khorenko
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