linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Gregory Price <gourry@gourry.net>
To: David Hildenbrand <david@redhat.com>
Cc: Zi Yan <ziy@nvidia.com>,
	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
Subject: Re: [RFC PATCH] page_alloc: allow migration of smaller hugepages during contig_alloc.
Date: Mon, 20 Oct 2025 16:27:40 -0400	[thread overview]
Message-ID: <aPabPH_6FxPgPKM5@gourry-fedora-PF4VCD3F> (raw)
In-Reply-To: <451b72a3-8052-4dfb-84e7-1e97c3388db0@redhat.com>

On Mon, Oct 20, 2025 at 10:17:42PM +0200, David Hildenbrand wrote:
> Yes, it's completely racy.
> 
> I was primarily concerned about us calling functions that will VM_WARN_ON()
> etc due to the races; not that they would make us accept/jump over a range
> although we shouldn't.
> 
> Of course, regarding the latter, we want to try as good as possible to avoid
> jumping over ranges that we can actually handle.
>

I'll go ahead and add a snapshot_page.

~Gregory


  reply	other threads:[~2025-10-20 20:27 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-20 17:06 Gregory Price
2025-10-20 17:24 ` David Hildenbrand
2025-10-20 17:41   ` Gregory Price
2025-10-20 19:15     ` Zi Yan
2025-10-20 19:18       ` David Hildenbrand
2025-10-20 19:40         ` Gregory Price
2025-10-20 19:46           ` David Hildenbrand
2025-10-20 19:58             ` Gregory Price
2025-10-20 20:17               ` David Hildenbrand
2025-10-20 20:27                 ` Gregory Price [this message]
2025-10-20 20:38                   ` David Hildenbrand

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=aPabPH_6FxPgPKM5@gourry-fedora-PF4VCD3F \
    --to=gourry@gourry.net \
    --cc=akpm@linux-foundation.org \
    --cc=david@redhat.com \
    --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=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