From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> Let's add a comment about where the failed page goes to, which makes code more readable. Acked-by: Christoph Lameter <cl@xxxxxxxxx> Reviewed-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx> Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> diff --git a/mm/migrate.c b/mm/migrate.c index 3747fcd..c6ac87a 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1123,7 +1123,12 @@ int migrate_pages(struct list_head *from, new_page_t get_new_page, nr_succeeded++; break; default: - /* Permanent failure */ + /* + * Permanent failure (-EBUSY, -ENOSYS, etc.): + * unlike -EAGAIN case, the failed page is + * removed from migration page list and not + * retried in the next outer loop. + */ nr_failed++; break; } -- 1.7.9.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>