Re: [PATCH 2/2] mm: ksm: Support hwpoison for ksm page

[Kefeng Wang]

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 <wangkefeng.wang@xxxxxxxxxx>