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[173.79.56.208]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6e8f707c5dcsm73466146d6.3.2025.03.11.08.52.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Mar 2025 08:52:30 -0700 (PDT) Date: Tue, 11 Mar 2025 11:52:27 -0400 From: Gregory Price To: Yunjeong Mun Cc: kernel_team@skhynix.com, Joshua Hahn , harry.yoo@oracle.com, ying.huang@linux.alibaba.com, gregkh@linuxfoundation.org, rakie.kim@sk.com, akpm@linux-foundation.org, rafael@kernel.org, lenb@kernel.org, dan.j.williams@intel.com, Jonathan.Cameron@huawei.com, dave.jiang@intel.com, horen.chuang@linux.dev, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, kernel-team@meta.com, Honggyu Kim Subject: Re: [PATCH 2/2 v6] mm/mempolicy: Don't create weight sysfs for memoryless nodes Message-ID: References: <20250311095151.446-1-yunjeong.mun@sk.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250311095151.446-1-yunjeong.mun@sk.com> On Tue, Mar 11, 2025 at 06:51:45PM +0900, Yunjeong Mun wrote: > Hi Gregory, thanks for kind explanation. > > We believe our propsed hot plug patch should be added as a hot-fix to v6.14, > because it can be addressed independently of auto-configuring feature. > Rakie will send v2 patch soon. > I think having the answer to at least the following question documented is needed. I'll wait for v2 to do another review. > > 2) We need to clearly define what the weight of a node will be when > > in manual mode and a node goes (memory -> no memory -> memory) > > a) does it retain it's old, manually set weight? > > b) does it revert to 1? > > ~Gregory