From: Matthew Wilcox <willy@infradead.org>
To: Dev Jain <dev.jain@arm.com>
Cc: "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>,
akpm@linux-foundation.org, axelrasmussen@google.com,
yuanchu@google.com, david@kernel.org, hughd@google.com,
chrisl@kernel.org, kasong@tencent.com, weixugc@google.com,
Liam.Howlett@oracle.com, vbabka@kernel.org, rppt@kernel.org,
surenb@google.com, mhocko@suse.com, riel@surriel.com,
harry.yoo@oracle.com, jannh@google.com, pfalcato@suse.de,
baolin.wang@linux.alibaba.com, shikemeng@huaweicloud.com,
nphamcs@gmail.com, bhe@redhat.com, baohua@kernel.org,
youngjun.park@lge.com, ziy@nvidia.com, kas@kernel.org,
yuzhao@google.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, ryan.roberts@arm.com,
anshuman.khandual@arm.com
Subject: Re: [PATCH 6/9] mm/swapfile: Make folio_dup_swap batchable
Date: Thu, 19 Mar 2026 16:47:31 +0000 [thread overview]
Message-ID: <abwoo2aIbRwZDlam@casper.infradead.org> (raw)
In-Reply-To: <26631dbf-1a3e-4d30-9a07-ff64319cbf2f@arm.com>
On Wed, Mar 11, 2026 at 11:12:22AM +0530, Dev Jain wrote:
> On 10/03/26 2:19 pm, Lorenzo Stoakes (Oracle) wrote:
> > On Tue, Mar 10, 2026 at 01:00:10PM +0530, Dev Jain wrote:
> >> Teach folio_dup_swap to handle a batch of consecutive pages. Note that
> >> folio_dup_swap already can handle a subset of this: nr_pages == 1 and
> >> nr_pages == folio_nr_pages(folio). Generalize this to any nr_pages.
> >>
> >> Currently we have a not-so-nice logic of passing in subpage == NULL if
> >> we mean to exercise the logic on the entire folio, and subpage != NULL if
> >> we want to exercise the logic on only that subpage. Remove this
> >> indirection, and explicitly pass subpage != NULL, and the number of
> >> pages required.
> >
> > You've made the interface more confusing? Now we can update multiple subpages
> > but specify only one? :)
For the next version, please lose the "subpage" name. It's just a page.
folios have pages, not subpages.
next prev parent reply other threads:[~2026-03-19 16:48 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-10 7:30 [PATCH 0/9] mm/rmap: Optimize anonymous large folio unmapping Dev Jain
2026-03-10 7:30 ` [PATCH 1/9] mm/rmap: make nr_pages signed in try_to_unmap_one Dev Jain
2026-03-10 7:56 ` Lorenzo Stoakes (Oracle)
2026-03-10 8:06 ` David Hildenbrand (Arm)
2026-03-10 8:23 ` Dev Jain
2026-03-10 12:40 ` Matthew Wilcox
2026-03-11 4:54 ` Dev Jain
2026-03-10 7:30 ` [PATCH 2/9] mm/rmap: initialize nr_pages to 1 at loop start " Dev Jain
2026-03-10 8:10 ` Lorenzo Stoakes (Oracle)
2026-03-10 8:31 ` Dev Jain
2026-03-10 8:39 ` Lorenzo Stoakes (Oracle)
2026-03-10 8:43 ` Dev Jain
2026-03-10 7:30 ` [PATCH 3/9] mm/rmap: refactor lazyfree unmap commit path to commit_ttu_lazyfree_folio() Dev Jain
2026-03-10 8:19 ` Lorenzo Stoakes (Oracle)
2026-03-10 8:42 ` Dev Jain
2026-03-19 15:53 ` Lorenzo Stoakes (Oracle)
2026-03-10 7:30 ` [PATCH 4/9] mm/memory: Batch set uffd-wp markers during zapping Dev Jain
2026-03-10 7:30 ` [PATCH 5/9] mm/rmap: batch unmap folios belonging to uffd-wp VMAs Dev Jain
2026-03-10 8:34 ` Lorenzo Stoakes (Oracle)
2026-03-10 23:32 ` Barry Song
2026-03-11 4:14 ` Barry Song
2026-03-11 4:52 ` Dev Jain
2026-03-11 4:56 ` Dev Jain
2026-03-10 7:30 ` [PATCH 6/9] mm/swapfile: Make folio_dup_swap batchable Dev Jain
2026-03-10 8:27 ` Kairui Song
2026-03-10 8:46 ` Dev Jain
2026-03-10 8:49 ` Lorenzo Stoakes (Oracle)
2026-03-11 5:42 ` Dev Jain
2026-03-19 15:26 ` Lorenzo Stoakes (Oracle)
2026-03-19 16:47 ` Matthew Wilcox [this message]
2026-03-18 0:20 ` kernel test robot
2026-03-10 7:30 ` [PATCH 7/9] mm/swapfile: Make folio_put_swap batchable Dev Jain
2026-03-10 8:29 ` Kairui Song
2026-03-10 8:50 ` Dev Jain
2026-03-10 8:55 ` Lorenzo Stoakes (Oracle)
2026-03-18 1:04 ` kernel test robot
2026-03-10 7:30 ` [PATCH 8/9] mm/rmap: introduce folio_try_share_anon_rmap_ptes Dev Jain
2026-03-10 9:38 ` Lorenzo Stoakes (Oracle)
2026-03-11 8:09 ` Dev Jain
2026-03-12 8:19 ` Wei Yang
2026-03-19 15:47 ` Lorenzo Stoakes (Oracle)
2026-04-08 7:14 ` Dev Jain
2026-03-10 7:30 ` [PATCH 9/9] mm/rmap: enable batch unmapping of anonymous folios Dev Jain
2026-03-10 8:02 ` [PATCH 0/9] mm/rmap: Optimize anonymous large folio unmapping Lorenzo Stoakes (Oracle)
2026-03-10 9:28 ` Dev Jain
2026-03-10 12:59 ` Lance Yang
2026-03-11 8:11 ` Dev Jain
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=abwoo2aIbRwZDlam@casper.infradead.org \
--to=willy@infradead.org \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=anshuman.khandual@arm.com \
--cc=axelrasmussen@google.com \
--cc=baohua@kernel.org \
--cc=baolin.wang@linux.alibaba.com \
--cc=bhe@redhat.com \
--cc=chrisl@kernel.org \
--cc=david@kernel.org \
--cc=dev.jain@arm.com \
--cc=harry.yoo@oracle.com \
--cc=hughd@google.com \
--cc=jannh@google.com \
--cc=kas@kernel.org \
--cc=kasong@tencent.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=ljs@kernel.org \
--cc=mhocko@suse.com \
--cc=nphamcs@gmail.com \
--cc=pfalcato@suse.de \
--cc=riel@surriel.com \
--cc=rppt@kernel.org \
--cc=ryan.roberts@arm.com \
--cc=shikemeng@huaweicloud.com \
--cc=surenb@google.com \
--cc=vbabka@kernel.org \
--cc=weixugc@google.com \
--cc=youngjun.park@lge.com \
--cc=yuanchu@google.com \
--cc=yuzhao@google.com \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.