linux-kernel - Re: [PATCH v4] hugetlbfs: check for shareable lock before calling huge_pmd

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Message-ID: <bab3249a-d9f2-4f19-9493-b7560aecc3ce@redhat.com>
Date: Mon, 13 Oct 2025 11:54:00 +0200
From: David Hildenbrand <david@...hat.com>
To: Deepanshu Kartikey <kartikey406@...il.com>, muchun.song@...ux.dev,
 osalvador@...e.de, akpm@...ux-foundation.org, broonie@...nel.org
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 syzbot+f26d7c75c26ec19790e7@...kaller.appspotmail.com
Subject: Re: [PATCH v4] hugetlbfs: check for shareable lock before calling
 huge_pmd_unshare()

On 13.10.25 11:33, Deepanshu Kartikey wrote:
> Hi David,
> 
> That makes a lot of sense - moving the assertions after the early return
> checks is cleaner since the locks are only needed when actual unsharing
> work happens.
> 
> Should I send a v5 with your suggested change?

Let's wait if the hugetlb maintainers have any preference.

-- 
Cheers

David / dhildenb