--- a/mm/vmscan.c~mm-vmscan-fix-documentation-for-page_check_references +++ a/mm/vmscan.c @@ -1385,7 +1385,7 @@ static enum page_references page_check_r /* * All mapped pages start out with page table * references from the instantiating fault, so we need - * to look twice if a mapped file page is used more + * to look twice if a mapped file/anon page is used more * than once. * * Mark it and spare it for another trip around the