diff options
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 374a0d54b0..5f32a196a6 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -517,6 +517,13 @@ static ssize_t thpsize_enabled_store(struct kobject *kobj, } else ret = -EINVAL; + if (ret > 0) { + int err; + + err = start_stop_khugepaged(); + if (err) + ret = err; + } return ret; } @@ -1659,7 +1666,7 @@ vm_fault_t do_huge_pmd_numa_page(struct vm_fault *vmf) unsigned long haddr = vmf->address & HPAGE_PMD_MASK; int nid = NUMA_NO_NODE; int target_nid, last_cpupid = (-1 & LAST_CPUPID_MASK); - bool migrated = false, writable = false; + bool writable = false; int flags = 0; vmf->ptl = pmd_lock(vma->vm_mm, vmf->pmd); @@ -1695,16 +1702,17 @@ vm_fault_t do_huge_pmd_numa_page(struct vm_fault *vmf) if (node_is_toptier(nid)) last_cpupid = folio_last_cpupid(folio); target_nid = numa_migrate_prep(folio, vmf, haddr, nid, &flags); - if (target_nid == NUMA_NO_NODE) { - folio_put(folio); + if (target_nid == NUMA_NO_NODE) + goto out_map; + if (migrate_misplaced_folio_prepare(folio, vma, target_nid)) { + flags |= TNF_MIGRATE_FAIL; goto out_map; } - + /* The folio is isolated and isolation code holds a folio reference. */ spin_unlock(vmf->ptl); writable = false; - migrated = migrate_misplaced_folio(folio, vma, target_nid); - if (migrated) { + if (!migrate_misplaced_folio(folio, vma, target_nid)) { flags |= TNF_MIGRATED; nid = target_nid; } else { |