index fd724bc..5d244d0 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1227,6 +1227,16 @@ void task_numa_work(struct callback_head *work) if (!vma_migratable(vma)) continue; + /* + * Shared library pages mapped by multiple processes are not + * migrated as it is expected they are cache replicated. Avoid + * hinting faults in read-only file-backed mappings or the vdso + * as migrating the pages will be of marginal benefit. + */ + if (!vma->vm_mm || + (vma->vm_file && (vma->vm_flags & (VM_READ|VM_WRITE)) == (VM_READ))) + continue; + =》 May I ask a question, we should consider some VMAs canot be scaned for BalanceNuma? (VM_DONTEXPAND | VM_RESERVED | VM_INSERTPAGE | VM_NONLINEAR | VM_MIXEDMAP | VM_SAO)); -- 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