diff options
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index f969da5dd8a2..4a57f135b76e 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -924,15 +924,21 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest, nodemask_t nmask; LIST_HEAD(pagelist); int err = 0; + struct vm_area_struct *vma; nodes_clear(nmask); node_set(source, nmask); - check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask, + vma = check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask, flags | MPOL_MF_DISCONTIG_OK, &pagelist); + if (IS_ERR(vma)) + return PTR_ERR(vma); - if (!list_empty(&pagelist)) + if (!list_empty(&pagelist)) { err = migrate_pages(&pagelist, new_node_page, dest, 0); + if (err) + putback_lru_pages(&pagelist); + } return err; } @@ -1147,9 +1153,12 @@ static long do_mbind(unsigned long start, unsigned long len, err = mbind_range(mm, start, end, new); - if (!list_empty(&pagelist)) + if (!list_empty(&pagelist)) { nr_failed = migrate_pages(&pagelist, new_vma_page, (unsigned long)vma, 0); + if (nr_failed) + putback_lru_pages(&pagelist); + } if (!err && nr_failed && (flags & MPOL_MF_STRICT)) err = -EIO; @@ -1588,7 +1597,7 @@ unsigned slab_node(struct mempolicy *policy) (void)first_zones_zonelist(zonelist, highest_zoneidx, &policy->v.nodes, &zone); - return zone->node; + return zone ? zone->node : numa_node_id(); } default: |