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-rw-r--r--mm/hugetlb.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 827bb02a43a4..ef6963b577fd 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -372,8 +372,10 @@ retry_locked:
spin_unlock(&resv->lock);
trg = kmalloc(sizeof(*trg), GFP_KERNEL);
- if (!trg)
+ if (!trg) {
+ kfree(nrg);
return -ENOMEM;
+ }
spin_lock(&resv->lock);
list_add(&trg->link, &resv->region_cache);
@@ -483,8 +485,16 @@ static long region_del(struct resv_map *resv, long f, long t)
retry:
spin_lock(&resv->lock);
list_for_each_entry_safe(rg, trg, head, link) {
- if (rg->to <= f)
+ /*
+ * Skip regions before the range to be deleted. file_region
+ * ranges are normally of the form [from, to). However, there
+ * may be a "placeholder" entry in the map which is of the form
+ * (from, to) with from == to. Check for placeholder entries
+ * at the beginning of the range to be deleted.
+ */
+ if (rg->to <= f && (rg->to != rg->from || rg->to != f))
continue;
+
if (rg->from >= t)
break;
@@ -1886,7 +1896,10 @@ struct page *alloc_huge_page(struct vm_area_struct *vma,
page = __alloc_buddy_huge_page_with_mpol(h, vma, addr);
if (!page)
goto out_uncharge_cgroup;
-
+ if (!avoid_reserve && vma_has_reserves(vma, gbl_chg)) {
+ SetPagePrivate(page);
+ h->resv_huge_pages--;
+ }
spin_lock(&hugetlb_lock);
list_move(&page->lru, &h->hugepage_activelist);
/* Fall through */
@@ -3693,12 +3706,12 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
} else if (unlikely(is_hugetlb_entry_hwpoisoned(entry)))
return VM_FAULT_HWPOISON_LARGE |
VM_FAULT_SET_HINDEX(hstate_index(h));
+ } else {
+ ptep = huge_pte_alloc(mm, address, huge_page_size(h));
+ if (!ptep)
+ return VM_FAULT_OOM;
}
- ptep = huge_pte_alloc(mm, address, huge_page_size(h));
- if (!ptep)
- return VM_FAULT_OOM;
-
mapping = vma->vm_file->f_mapping;
idx = vma_hugecache_offset(h, vma, address);