From: Mel Gorman <[email protected]> Subject: mm: numa: avoid unnecessary work on the failure path
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]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> --- mm/migrate.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff -puN mm/migrate.c~mm-numa-avoid-unnecessary-work-on-the-failure-path mm/migrate.c --- a/mm/migrate.c~mm-numa-avoid-unnecessary-work-on-the-failure-path +++ a/mm/migrate.c @@ -1780,7 +1780,8 @@ 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; } /* @@ -1854,6 +1855,7 @@ out_dropref: } spin_unlock(ptl); +out_unlock: unlock_page(page); put_page(page); return 0; _ -- 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
