diff options
| author | Huang Ying <ying.huang@intel.com> | 2022-08-17 11:14:04 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-27 05:46:06 +0300 |
| commit | 5fc30916b5cda697a7eb8f1167c38c27100a793a (patch) | |
| tree | e306dc8d33ba018743b3a0de8e6b86e4cb1711f8 /mm/migrate.c | |
| parent | fbed53b47770b978be290cec0f4f22577766c12d (diff) | |
| download | linux-5fc30916b5cda697a7eb8f1167c38c27100a793a.tar.xz | |
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: 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>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index ae55f08e72ce..0018b5191799 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1545,7 +1545,8 @@ retry: } } } - nr_failed += retry; + if (!no_subpage_counting) + nr_failed += retry; nr_thp_failed += thp_retry; /* * Try to migrate subpages of fail-to-migrate THPs, no nr_failed |