Messages in this thread | | | From | "Huang, Ying" <> | Subject | Re: [PATCH v3 1/2] mm: migration: fix the FOLL_GET failure on following huge page | Date | Mon, 15 Aug 2022 09:59:27 +0800 |
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Haiyue Wang <haiyue.wang@intel.com> writes:
> Not all huge page APIs support FOLL_GET option, so the __NR_move_pages
move_pages() is a syscall, so you can just call it move_pages(), or move_pages() syscall.
> will fail to get the page node information for huge page. ~~~~~~~~~ some huge pages?
> This is an temporary solution to mitigate the racing fix.
Why is it "racing fix"? This isn't a race condition fix.
Best Regards, Huang, Ying
> After supporting follow huge page by FOLL_GET is done, this fix can be > reverted safely. > > Fixes: 4cd614841c06 ("mm: migration: fix possible do_pages_stat_array racing with memory offline") > Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
[snip]
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