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H A D | migrate.c | diff e6fa8a79fe03e1734c26287474b1ac09287fdeb7 Wed Aug 17 10:14:06 CEST 2022 Huang Ying <ying.huang@intel.com> migrate_pages(): fix failure counting for THP splitting
If THP is failed to be migrated, it may be split and retry. But after splitting, the head page will be left in "from" list, although THP migration failure has been counted already. If the head page is failed to be migrated too, the failure will be counted twice incorrectly. So this is fixed in this patch via moving the head page of THP after splitting to "thp_split_pages" too.
Link: https://lkml.kernel.org/r/20220817081408.513338-7-ying.huang@intel.com Fixes: 5984fabb6e82 ("mm: move_pages: report the number of non-attempted pages") Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Oscar Salvador <osalvador@suse.de> Cc: Zi Yan <ziy@nvidia.com> Cc: Yang Shi <shy828301@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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