From: Oscar Salvador <osalvador@suse.de>
To: Gregory Price <gourry@gourry.net>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kernel-team@meta.com, akpm@linux-foundation.org, vbabka@suse.cz,
surenb@google.com, mhocko@suse.com, jackmanb@google.com,
hannes@cmpxchg.org, ziy@nvidia.com,
David Hildenbrand <david@redhat.com>,
Wei Yang <richard.weiyang@gmail.com>
Subject: Re: [PATCH v3] page_alloc: allow migration of smaller hugepages during contig_alloc.
Date: Mon, 27 Oct 2025 10:55:52 +0100 [thread overview]
Message-ID: <aP9BqHy3ksstIxfU@localhost.localdomain> (raw)
In-Reply-To: <20251024192849.2765667-1-gourry@gourry.net>
On Fri, Oct 24, 2025 at 03:28:49PM -0400, Gregory Price wrote:
> We presently skip regions with hugepages entirely when trying to do
> contiguous page allocation. Instead, if hugepage migration is enabled,
> consider regions with hugepages smaller than the target contiguous
> allocation request as valid targets for allocation.
>
> isolate_migrate_pages_block() already expects requests with hugepages
> to originate from alloc_contig, and hugetlb code also does a migratable
> check when isolating in folio_isolate_hugetlb().
>
> Suggested-by: David Hildenbrand <david@redhat.com>
> Signed-off-by: Gregory Price <gourry@gourry.net>
> Reviewed-by: Zi Yan <ziy@nvidia.com>
> Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
--
Oscar Salvador
SUSE Labs
next prev parent reply other threads:[~2025-10-27 9:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-24 19:28 Gregory Price
2025-10-26 4:46 ` David Rientjes
2025-10-27 9:55 ` Oscar Salvador [this message]
2025-10-27 15:43 ` David Hildenbrand
2025-11-06 16:06 ` Gregory Price
2025-11-21 19:15 Gregory Price
2025-11-21 19:31 ` Andrew Morton
2025-11-21 19:42 ` Gregory Price
2025-12-01 16:30 ` Joshua Hahn
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=aP9BqHy3ksstIxfU@localhost.localdomain \
--to=osalvador@suse.de \
--cc=akpm@linux-foundation.org \
--cc=david@redhat.com \
--cc=gourry@gourry.net \
--cc=hannes@cmpxchg.org \
--cc=jackmanb@google.com \
--cc=kernel-team@meta.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.com \
--cc=richard.weiyang@gmail.com \
--cc=surenb@google.com \
--cc=vbabka@suse.cz \
--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