commit eb4489f69f224356193364dc2762aa009738ca7f upstream. If a PMD changes during a THP migration then migration aborts but the failure path is doing more work than is necessary.
Signed-off-by: Mel Gorman <[email protected]> Reviewed-by: Rik van Riel <[email protected]> Cc: Alex Thorlton <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> --- mm/migrate.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/migrate.c b/mm/migrate.c index 818c169..e33f0d1 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1726,7 +1726,8 @@ fail_putback: putback_lru_page(page); mod_zone_page_state(page_zone(page), NR_ISOLATED_ANON + page_lru, -HPAGE_PMD_NR); - goto out_fail; + + goto out_unlock; } /* @@ -1800,6 +1801,7 @@ out_dropref: } spin_unlock(&mm->page_table_lock); +out_unlock: unlock_page(page); put_page(page); return 0; -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
