On Tue, 04 Aug 2015 19:40:08 +0900 Jaewon Kim <jaewon31.kim@xxxxxxxxxxx> wrote: > reclaim_clean_pages_from_list() assumes that shrink_page_list() returns > number of pages removed from the candidate list. But shrink_page_list() > puts back mlocked pages without passing it to caller and without > counting as nr_reclaimed. This incurrs increasing nr_isolated. > To fix this, this patch changes shrink_page_list() to pass unevictable > pages back to caller. Caller will take care those pages. > > .. > > --- a/mm/vmscan.c > +++ b/mm/vmscan.c > @@ -1157,7 +1157,7 @@ cull_mlocked: > if (PageSwapCache(page)) > try_to_free_swap(page); > unlock_page(page); > - putback_lru_page(page); > + list_add(&page->lru, &ret_pages); > continue; > > activate_locked: Is this going to cause a whole bunch of mlocked pages to be migrated whereas in current kernels they stay where they are? -- 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>