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b=PQeO386uyq9Zj2RmPUhbQTxwDLMrNSLyuDhakS4xEaOiKPurJ2glp05GW5UwOZrCk 7TngOd0Gikg+O1G+TqsvpMVOXIcGVyukDWeHmwY8gS08SrfGNLrw9Os8XkmTWIoRKR bCxPIS2z7J1BbZsi0kOOJhy2hiXDY3Qo03xpvRCmsFxKvoGFVy/YEDtuSMuCpASoEW aTI9QuC8ycfqG9G6cytqg3Y6UybPQA2IC0SuCKL0+Kaen97+8XntUuFNzfSTg8tvEF mt8eDIUcjq1YzgVdgfQSb+CspLnRZG296mAoj2yxBh/Uo6wI+gaqW6VduGfwTZHkFt 7MVY02NaRdCVA== Message-ID: <75358469-e4b1-4c11-89a2-61773c89132c@kernel.org> Date: Fri, 25 Sep 2026 12:04:48 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 3/7] sched/numa: scan read-only file mappings in tiering mode To: Gregory Price Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@meta.com, akpm@linux-foundation.org, ljs@kernel.org, liam@infradead.org, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, kprateek.nayak@amd.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, nico.pache@linux.dev, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, usama.arif@linux.dev, kas@kernel.org, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, ying.huang@linux.alibaba.com, apopple@nvidia.com, jannh@google.com, pfalcato@suse.de, hannes@cmpxchg.org, shy828301@gmail.com, raghavendra.kt@amd.com, stable@vger.kernel.org References: <20260922182928.2199090-1-gourry@gourry.net> <20260922182928.2199090-4-gourry@gourry.net> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 7A3B9C0002 X-Rspam-User: X-Rspamd-Server: rspam07 X-Stat-Signature: czw3sanzjnaw6fhpas1pinwftgc7urte X-HE-Tag: 1790330702-523706 X-HE-Meta: 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 uLEJg/dR TSStxc1X+WTOMo9qVYdugakTufMG27HX/bsp0qg46S3kPZCj16XJduSy6EXiR4QzU6aADgkOnZ1qZJGlxetfAP1yOgslUvWee1FsMFPTOj8LE1JtAZNMWtJd9k65YbrZMCVnQ395pBie3JSUuIt6BzK7KytBIiqUgYLh7kp62csBOhIW+QNT4NCTiY+cPB0ZaENfN74dSVsXxoiMHHSQGxiYaCuevdE4N76i7KKvu4/02LF/sLLOyJ1GMcN2a04vtQCllmBfgdP1TQiLk0UrrtzQm1+bbVu5Z3tY/gBtF2cX0o1NLbmJ/Zzg3rmO1BM5hHQE0XS4NYLGv5n8rN96aZkuZow== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 9/25/26 02:35, Gregory Price wrote: > On Thu, Sep 24, 2026 at 10:53:56PM +0200, David Hildenbrand (Arm) wrote: >>> + placement_scan &= numab_mode & NUMA_BALANCING_NORMAL; >> >> Do we have to update placement_scan at all? > > in the following commits this composes: > > placement_scan &= numab_mode & NUMA_BALANCING_NORMAL; > if (scan_started) > placement_scan &= vma->numab_state->placement_scan; > else if (tiering) > placement_scan &= placement_due; > if (scan_started && !vma->numab_state->placement_scan) placement_scan = false; else if (tiering && !placement_due) placement_scan = false; Is more pleasing to the eye ;) -- Cheers, David