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Mon, 17 Jun 2024 07:51:01 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id fIY0D+Xqb2byVQAAD6G6ig (envelope-from ); Mon, 17 Jun 2024 07:51:01 +0000 MIME-Version: 1.0 Date: Mon, 17 Jun 2024 09:51:01 +0200 From: Oscar Salvador To: Miaohe Lin Cc: Jiaqi Yan , nao.horiguchi@gmail.com, jane.chu@oracle.com, muchun.song@linux.dev, akpm@linux-foundation.org, shuah@kernel.org, corbet@lwn.net, rientjes@google.com, duenwen@google.com, fvdl@google.com, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-doc@vger.kernel.org, Lance Yang Subject: Re: [PATCH v2 1/3] mm/memory-failure: userspace controls soft-offlining pages In-Reply-To: <786a08ff-aa7e-49d5-f589-0a405c7e1a34@huawei.com> References: <20240611215544.2105970-1-jiaqiyan@google.com> <20240611215544.2105970-2-jiaqiyan@google.com> <786a08ff-aa7e-49d5-f589-0a405c7e1a34@huawei.com> User-Agent: Roundcube Webmail Message-ID: X-Sender: osalvador@suse.de Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 2016C1A0005 X-Stat-Signature: tnxpimtwa9h8fp6k18fyt8z57mhjrbkr X-HE-Tag: 1718610662-651986 X-HE-Meta: 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 cd0bFMSQ iRetkhIv8FfDE3u9iFwhredAFm68omU4Zgt5JDMWETjX9dQ6pxgva5H4T+YviHTIKigQXfMCCt1aDfUpdGkZVWUg0F/+DIJVcrjxPQEtrLmUqO2Xbw2x7vK15R8le9+HJb0tZ+ChRas92rHxrTDGZdBn5HqWwSRivKHBTxlkkQ5K7VME66oXaalDIsBGG2f6DLDKJYzil6vBkzXNwaY2nx1EgbK68RR0IrHxyqEATBqXlL2Czs0ebc5X1oi8cVu0vsPoqijJVHoD9DhaZPf5hq5It/YXzOYyzN46y21E8yK4Cf7IAph+sHw1Z7QjtLKQvJXzfOtL4QyoSFPEkBjS47DhMVsrKMoAk8Yvp X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2024-06-17 09:31, Miaohe Lin wrote: > IMHO, it might not be suitable to use EAGAIN. Because it means > "Resource temporarily unavailable" and > this can be solved by simply retry later without any further actions > taken. But I might be wrong. We usually use 'EOPNOTSUPP' when we fail due to a setting not being set. EPERM is more for a capability matter. -- Oscar Salvador SUSE Labs