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Mon, 02 May 2022 18:15:26 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyYaUKBUmtnpR1yq4t3oy9VkaYKnH/ZmncA1pOMAEMZOY2M85HcjCLicImCLIKUwltXpRVGiA== X-Received: by 2002:a17:90b:1b07:b0:1dc:5ec5:56b0 with SMTP id nu7-20020a17090b1b0700b001dc5ec556b0mr2084173pjb.165.1651540526288; Mon, 02 May 2022 18:15:26 -0700 (PDT) Received: from [10.10.69.234] ([8.34.116.185]) by smtp.gmail.com with ESMTPSA id j5-20020a654d45000000b003c14af50621sm11895993pgt.57.2022.05.02.18.15.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 May 2022 18:15:25 -0700 (PDT) Message-ID: <08e9855c-395d-f40c-de3d-1ec8b644bfe8@redhat.com> Date: Tue, 3 May 2022 03:15:24 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH] mm: fix is_pinnable_page against on cma page To: Minchan Kim Cc: Andrew Morton , linux-mm , LKML , John Hubbard , John Dias References: <20220502173558.2510641-1-minchan@kernel.org> <29d0c1c3-a44e-4573-7e7e-32be07544dbe@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 2B32E140068 Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=bDhWpTGU; spf=none (imf09.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.129.124) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=none) header.from=redhat.com X-Rspam-User: X-Stat-Signature: zec3axofbsdc9aipfsfmjw3u589rbbie X-HE-Tag: 1651540523-645936 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000037, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: >>>> However, I assume we have the same issue right now already with >> ZONE_MOVABLE and MIGRATE_CMA when trying to pin a page residing on these > > ZONE_MOVALBE is also changed dynamically? > Sorry, with "same issue" I meant failing to pin if having to migrate and the page is temporarily unmovable. >> there are temporarily unmovable and we fail to migrate. But it would now >> apply even without ZONE_MOVABLE or MIGRATE_CMA. Hm... > > Didn't parse your last mention. On a system that neither uses ZONE_MOVABLE nor MIGRATE_CMA we might have to migrate now when pinning. -- Thanks, David / dhildenb