From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, vishal.moola@gmail.com,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/ptdesc: Derive from the compound head in page_ptdesc()
Date: Tue, 11 Nov 2025 09:02:28 +0530 [thread overview]
Message-ID: <cd05f470-b9ef-4fe7-840a-221dafbb886f@arm.com> (raw)
In-Reply-To: <aRHq4OdBCtC_V0eS@casper.infradead.org>
On 10/11/25 7:08 PM, Matthew Wilcox wrote:
> On Mon, Nov 10, 2025 at 06:37:25AM +0000, Anshuman Khandual wrote:
>> struct ptdesc (including all relevant helpers) support multi order compound
>> pages. But page_ptdesc() coverts given page into its own ptdesc rather than
>> deriving from its compound head as would have been expected otherwise. Just
>> change the macro to fetch the struct ptdesc from the compound head instead,
>> so that the same struct ptdesc is reached from all tail pages.
>
> Please review
> https://lore.kernel.org/linux-mm/20251020001652.2116669-1-willy@infradead.org/
> instead.
Sure, will do. Thanks for the pointer.
prev parent reply other threads:[~2025-11-11 3:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-10 6:37 Anshuman Khandual
2025-11-10 8:53 ` David Hildenbrand (Red Hat)
2025-11-11 1:51 ` Anshuman Khandual
2025-11-10 13:38 ` Matthew Wilcox
2025-11-11 3:32 ` Anshuman Khandual [this message]
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