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Howlett" , Arnaldo Carvalho de Melo , Namhyung Kim , Thomas Gleixner , Borislav Petkov , Kairui Song , Shakeel Butt , Dave Hansen , x86@kernel.org, Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , "H. Peter Anvin" , linux-perf-users@vger.kernel.org, Gregory Price , Ying Huang , Baolin Wang , Michal Hocko , Vlastimil Babka , Muchun Song References: <20260920-remove-pg_private-v5-0-bb68b6a21869@nvidia.com> <20260920-remove-pg_private-v5-2-bb68b6a21869@nvidia.com> From: Lance Yang In-Reply-To: <20260920-remove-pg_private-v5-2-bb68b6a21869@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: B904280005 X-Stat-Signature: 6rs7y1jgr9n9cwesj4oxxbeist9byf6x X-Rspamd-Server: rspam01 X-HE-Tag: 1789971618-40069 X-HE-Meta: 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 OXYf6+h8 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2026/9/21 10:27, Zi Yan wrote: > A high-order AUX page sets PG_private on its first page and stores the > order in first_page->private. Stop using PG_private and check > first_page->private for AUX page order only in the ring buffer and its > users. This is fine because page->private is 0 for order-0 AUX pages, > matching the page order. > > It prepares for a future commit that remove PG_private. > > No functional change intended. > > Assisted-by: LLM > To: Peter Zijlstra > To: Ingo Molnar > To: Arnaldo Carvalho de Melo > To: Namhyung Kim > To: Thomas Gleixner > To: Borislav Petkov > To: Dave Hansen > To: x86@kernel.org > Cc: Mark Rutland > Cc: Alexander Shishkin > Cc: Jiri Olsa > Cc: Ian Rogers > Cc: Adrian Hunter > Cc: James Clark > Cc: "H. Peter Anvin" > Cc: linux-perf-users@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Acked-by: Usama Arif > Acked-by: David Hildenbrand (Arm) > Signed-off-by: Zi Yan > --- Nice cleanup! Feel free to add: Reviewed-by: Lance Yang