diff options
| -rw-r--r-- | include/linux/mempolicy.h | 1 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 2 | ||||
| -rw-r--r-- | mm/mempolicy.c | 24 |
3 files changed, 26 insertions, 1 deletions
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index da6716b9e3fe..ea4d2495c646 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -136,6 +136,7 @@ struct mempolicy *mpol_shared_policy_lookup(struct shared_policy *sp, struct mempolicy *get_vma_policy(struct task_struct *tsk, struct vm_area_struct *vma, unsigned long addr); +bool vma_policy_mof(struct task_struct *task, struct vm_area_struct *vma); extern void numa_default_policy(void); extern void numa_policy_init(void); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 61ec0d4765b9..d98175d5c2c6 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1130,7 +1130,7 @@ void task_numa_work(struct callback_head *work) vma = mm->mmap; } for (; vma; vma = vma->vm_next) { - if (!vma_migratable(vma)) + if (!vma_migratable(vma) || !vma_policy_mof(p, vma)) continue; do { diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 196d8da2b657..0e895a2eed5f 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1679,6 +1679,30 @@ struct mempolicy *get_vma_policy(struct task_struct *task, return pol; } +bool vma_policy_mof(struct task_struct *task, struct vm_area_struct *vma) +{ + struct mempolicy *pol = get_task_policy(task); + if (vma) { + if (vma->vm_ops && vma->vm_ops->get_policy) { + bool ret = false; + + pol = vma->vm_ops->get_policy(vma, vma->vm_start); + if (pol && (pol->flags & MPOL_F_MOF)) + ret = true; + mpol_cond_put(pol); + + return ret; + } else if (vma->vm_policy) { + pol = vma->vm_policy; + } + } + + if (!pol) + return default_policy.flags & MPOL_F_MOF; + + return pol->flags & MPOL_F_MOF; +} + static int apply_policy_zone(struct mempolicy *policy, enum zone_type zone) { enum zone_type dynamic_policy_zone = policy_zone; |