[HELP] How to get task_struct from mm

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Hi folks,


As what we discussed about page demotion for PMEM at LSF/MM, the demotion should respect to the mempolicy and allowed mems of the process which the page (anonymous page only for now) belongs to.


The vma that the page is mapped to can be retrieved from rmap walk easily, but we need know the task_struct that the vma belongs to. It looks there is not such API, and container_of seems not work with pointer member.


Any suggestion?


Thanks,

Yang




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