From: Kiryl Shutsemau <kirill@shutemov.name>
To: "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>, Zi Yan <ziy@nvidia.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Nico Pache <npache@redhat.com>,
Ryan Roberts <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>,
Barry Song <baohua@kernel.org>,
Lance Yang <lance.yang@linux.dev>,
Vlastimil Babka <vbabka@kernel.org>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/9] mm/huge_memory: simplify vma_is_specal_huge()
Date: Thu, 19 Mar 2026 16:52:31 +0000 [thread overview]
Message-ID: <abwpKc6PbHiqQRg3@thinkstation> (raw)
In-Reply-To: <613669b1b2082d34f5632907003ae3874eff2ed9.1773924928.git.ljs@kernel.org>
On Thu, Mar 19, 2026 at 01:00:07PM +0000, Lorenzo Stoakes (Oracle) wrote:
> This function is confused - it overloads the term 'special' yet again,
> checks for DAX but in many cases the code explicitly excludes DAX before
> invoking the predicate.
>
> It also unnecessarily checks for vma->vm_file - this has to be present for
> a driver to have set VMA_MIXEDMAP_BIT or VMA_PFNMAP_BIT.
What enforces this?
--
Kiryl Shutsemau / Kirill A. Shutemov
next prev parent reply other threads:[~2026-03-19 16:52 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-19 13:00 [PATCH v2 0/9] mm/huge_memory: refactor zap_huge_pmd() Lorenzo Stoakes (Oracle)
2026-03-19 13:00 ` [PATCH v2 1/9] mm/huge_memory: simplify vma_is_specal_huge() Lorenzo Stoakes (Oracle)
2026-03-19 16:52 ` Kiryl Shutsemau [this message]
2026-03-19 17:16 ` Lorenzo Stoakes (Oracle)
2026-03-19 13:00 ` [PATCH v2 2/9] mm/huge: avoid big else branch in zap_huge_pmd() Lorenzo Stoakes (Oracle)
2026-03-19 13:00 ` [PATCH v2 3/9] mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc Lorenzo Stoakes (Oracle)
2026-03-19 13:00 ` [PATCH v2 4/9] mm/huge_memory: handle buggy PMD entry in zap_huge_pmd() Lorenzo Stoakes (Oracle)
2026-03-20 3:20 ` Baolin Wang
2026-03-19 13:00 ` [PATCH v2 5/9] mm/huge_memory: add a common exit path to zap_huge_pmd() Lorenzo Stoakes (Oracle)
2026-03-20 3:27 ` Baolin Wang
2026-03-19 13:00 ` [PATCH v2 6/9] mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE() Lorenzo Stoakes (Oracle)
2026-03-20 3:31 ` Baolin Wang
2026-03-19 13:00 ` [PATCH v2 7/9] mm/huge_memory: deduplicate zap deposited table call Lorenzo Stoakes (Oracle)
2026-03-19 17:03 ` Kiryl Shutsemau
2026-03-19 17:18 ` Lorenzo Stoakes (Oracle)
2026-03-19 21:56 ` Kiryl Shutsemau
2026-03-20 13:59 ` Lorenzo Stoakes (Oracle)
2026-03-20 14:14 ` Lorenzo Stoakes (Oracle)
2026-03-19 13:00 ` [PATCH v2 8/9] mm/huge_memory: deduplicate zap_huge_pmd() further by tracking state Lorenzo Stoakes (Oracle)
2026-03-20 3:49 ` Baolin Wang
2026-03-20 13:51 ` Lorenzo Stoakes (Oracle)
2026-03-21 5:15 ` Baolin Wang
2026-03-19 13:00 ` [PATCH v2 9/9] mm/huge_memory: have zap_huge_pmd() use vm_normal_folio_pmd() Lorenzo Stoakes (Oracle)
2026-03-20 3:09 ` [PATCH v2 0/9] mm/huge_memory: refactor zap_huge_pmd() Andrew Morton
2026-03-20 13:27 ` Lorenzo Stoakes (Oracle)
2026-03-21 3:21 ` Roman Gushchin
2026-03-21 3:33 ` Andrew Morton
2026-03-22 0:15 ` Andrew Morton
2026-03-22 2:12 ` Roman Gushchin
2026-03-23 11:19 ` Lorenzo Stoakes (Oracle)
2026-03-23 11:24 ` David Hildenbrand (Arm)
2026-03-23 11:31 ` Lorenzo Stoakes (Oracle)
2026-03-23 12:34 ` Pedro Falcato
2026-03-23 21:36 ` Andrew Morton
2026-03-23 23:27 ` Pedro Falcato
2026-03-24 0:05 ` Andrew Morton
2026-03-24 7:35 ` Lorenzo Stoakes (Oracle)
2026-03-24 7:58 ` Mike Rapoport
2026-03-24 9:55 ` Lorenzo Stoakes (Oracle)
2026-03-24 1:08 ` Roman Gushchin
2026-03-24 7:56 ` Lorenzo Stoakes (Oracle)
2026-03-24 15:24 ` Roman Gushchin
2026-03-24 18:05 ` Lorenzo Stoakes (Oracle)
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=abwpKc6PbHiqQRg3@thinkstation \
--to=kirill@shutemov.name \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=baohua@kernel.org \
--cc=baolin.wang@linux.alibaba.com \
--cc=david@kernel.org \
--cc=dev.jain@arm.com \
--cc=lance.yang@linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=ljs@kernel.org \
--cc=mhocko@suse.com \
--cc=npache@redhat.com \
--cc=rppt@kernel.org \
--cc=ryan.roberts@arm.com \
--cc=surenb@google.com \
--cc=vbabka@kernel.org \
--cc=ziy@nvidia.com \
/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