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Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: [PATCH 2/2] mm: ksm: Support hwpoison for ksm page Content-Language: en-US To: Longlong Xia , , CC: , , , References: <20230330074501.205092-1-xialonglong1@huawei.com> <20230330074501.205092-3-xialonglong1@huawei.com> From: Kefeng Wang In-Reply-To: <20230330074501.205092-3-xialonglong1@huawei.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 5CC101A0025 X-Stat-Signature: xr6heqdhmxsqhjp8shrdo74ps33q6isd X-HE-Tag: 1681378230-500095 X-HE-Meta: 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 Kh/I3dXT U35ywA8FOGNoA6ajP5TSo1Q4vHZ/Kqd+2ZBCOS79d+8lJ76J/W3Dwj298IIAZsViNm7gG/iRv9kEXVN1ACxfrUry0GG1JXxUwIlNx2vjAIJgp37DBV3NiUoFI1D9wDE/mbMPp52/BFHU8CpWhp9Tpa281kWirI5UhrtKNmVXGdkgUORo= 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: On 2023/3/30 15:45, Longlong Xia wrote: > hwpoison_user_mappings() is updated to support ksm pages, and add > collect_procs_ksm() to collect processes when the error hit an ksm > page. The difference from collect_procs_anon() is that it also needs > to traverse the rmap-item list on the stable node of the ksm page. > At the same time, add_to_kill_ksm() is added to handle ksm pages. And > task_in_to_kill_list() is added to avoid duplicate addition of tsk to > the to_kill list. This is because when scanning the list, if the pages > that make up the ksm page all come from the same process, they may be > added repeatedly. > Reviewed-by: Kefeng Wang