diff options
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index aff1f1ed3dc5..196d8da2b657 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2378,6 +2378,18 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long last_nidpid = page_nidpid_xchg_last(page, this_nidpid); if (!nidpid_pid_unset(last_nidpid) && nidpid_to_nid(last_nidpid) != polnid) goto out; + +#ifdef CONFIG_NUMA_BALANCING + /* + * If the scheduler has just moved us away from our + * preferred node, do not bother migrating pages yet. + * This way a short and temporary process migration will + * not cause excessive memory migration. + */ + if (polnid != current->numa_preferred_nid && + !current->numa_migrate_seq) + goto out; +#endif } if (curnid != polnid) |