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Wed, 22 Apr 2026 04:04:29 +0000 (GMT) Received: from [9.124.218.94] (unknown [9.124.218.94]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 22 Apr 2026 04:04:29 +0000 (GMT) Message-ID: <45b93560-acdb-4552-bac5-bd085d778085@linux.ibm.com> Date: Wed, 22 Apr 2026 09:34:27 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v6 2/5] mm: migrate: Add migrate_misplaced_folios_batch() To: Gregory Price , Bharata B Rao Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jonathan.Cameron@huawei.com, dave.hansen@intel.com, mgorman@techsingularity.net, mingo@redhat.com, peterz@infradead.org, raghavendra.kt@amd.com, riel@surriel.com, rientjes@google.com, sj@kernel.org, weixugc@google.com, willy@infradead.org, ying.huang@linux.alibaba.com, ziy@nvidia.com, dave@stgolabs.net, nifan.cxl@gmail.com, xuezhengchu@huawei.com, yiannis@zptcorp.com, akpm@linux-foundation.org, david@redhat.com, byungchul@sk.com, kinseyho@google.com, joshua.hahnjy@gmail.com, yuanchu@google.com, balbirs@nvidia.com, alok.rathore@samsung.com, shivankg@amd.com References: <20260323095104.238982-1-bharata@amd.com> <20260323095104.238982-3-bharata@amd.com> <24cd6a95-1304-4732-9273-43c73ea858b2@linux.ibm.com> Content-Language: en-US From: Donet Tom In-Reply-To: Content-Type: text/plain; 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All the isolated folios >>>>> + * in the list must belong to the same memcg so that NUMA_PAGE_MIGRATE >>>>> + * stat can be attributed correctly to the memcg. >> ^ This is the expectation from the caller. pghot caller ensures this. >> I could add a debug check in this routine to verify if that is indeed so. >> > Wondering if the interface name should somehow reflect this as well, to > make it a bit clearer. I agree—this would make the interface clearer. -Donet > > ~Gregory