migrate_pages(): fix failure counting for THP subpages retrying
If THP is failed to be migrated for -ENOSYS and -ENOMEM, the THP will be split into thp_split_pages, and after other pages are migrated, pages in thp_split_pages will be migrated with no_subpage_counting == true, because its failure have been counted already. If some pages in thp_split_pages are retried during migration, we should not count their failure if no_subpage_counting == true too. This is done this patch to fix the failure counting for THP subpages retrying. Link: https://lkml.kernel.org/r/20220817081408.513338-5-ying.huang@intel.com Fixes: 5984fabb ("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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