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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-10-05 17:36:38 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-10-05 17:36:38 -0700 |
| commit | 7b415285ae96f5bfa0fa95d3227c6900c4ff151d (patch) | |
| tree | feb5198f57bfb5b58aca24ddc76a313236f94512 /mm/migrate.c | |
| parent | c65cf815653ec64e73d40819806c2d1aed91681e (diff) | |
| parent | 049e6dde7e57f0054fdc49102e7ef4830c698b46 (diff) | |
Merge tag 'v4.3-rc4' into next
Merge with mainline to sync up with changes to parkbd driver.
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 7452a00bbb50..842ecd7aaf7f 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -740,6 +740,15 @@ static int move_to_new_page(struct page *newpage, struct page *page, if (PageSwapBacked(page)) SetPageSwapBacked(newpage); + /* + * Indirectly called below, migrate_page_copy() copies PG_dirty and thus + * needs newpage's memcg set to transfer memcg dirty page accounting. + * So perform memcg migration in two steps: + * 1. set newpage->mem_cgroup (here) + * 2. clear page->mem_cgroup (below) + */ + set_page_memcg(newpage, page_memcg(page)); + mapping = page_mapping(page); if (!mapping) rc = migrate_page(mapping, newpage, page, mode); @@ -756,9 +765,10 @@ static int move_to_new_page(struct page *newpage, struct page *page, rc = fallback_migrate_page(mapping, newpage, page, mode); if (rc != MIGRATEPAGE_SUCCESS) { + set_page_memcg(newpage, NULL); newpage->mapping = NULL; } else { - mem_cgroup_migrate(page, newpage, false); + set_page_memcg(page, NULL); if (page_was_mapped) remove_migration_ptes(page, newpage); page->mapping = NULL; |