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-rw-r--r--mm/hugetlb.c26
1 files changed, 22 insertions, 4 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 20e04c6..dcacc81 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -71,7 +71,25 @@ static void enqueue_huge_page(struct page *page)
free_huge_pages_node[nid]++;
}
-static struct page *dequeue_huge_page(struct vm_area_struct *vma,
+static struct page *dequeue_huge_page(void)
+{
+ int nid;
+ struct page *page = NULL;
+
+ for (nid = 0; nid < MAX_NUMNODES; ++nid) {
+ if (!list_empty(&hugepage_freelists[nid])) {
+ page = list_entry(hugepage_freelists[nid].next,
+ struct page, lru);
+ list_del(&page->lru);
+ free_huge_pages--;
+ free_huge_pages_node[nid]--;
+ break;
+ }
+ }
+ return page;
+}
+
+static struct page *dequeue_huge_page_vma(struct vm_area_struct *vma,
unsigned long address)
{
int nid;
@@ -410,7 +428,7 @@ static struct page *alloc_huge_page_shared(struct vm_area_struct *vma,
struct page *page;
spin_lock(&hugetlb_lock);
- page = dequeue_huge_page(vma, addr);
+ page = dequeue_huge_page_vma(vma, addr);
spin_unlock(&hugetlb_lock);
return page ? page : ERR_PTR(-VM_FAULT_OOM);
}
@@ -425,7 +443,7 @@ static struct page *alloc_huge_page_private(struct vm_area_struct *vma,
spin_lock(&hugetlb_lock);
if (free_huge_pages > resv_huge_pages)
- page = dequeue_huge_page(vma, addr);
+ page = dequeue_huge_page_vma(vma, addr);
spin_unlock(&hugetlb_lock);
if (!page) {
page = alloc_buddy_huge_page(vma, addr);
@@ -578,7 +596,7 @@ static unsigned long set_max_huge_pages(unsigned long count)
min_count = max(count, min_count);
try_to_free_low(min_count);
while (min_count < persistent_huge_pages) {
- struct page *page = dequeue_huge_page(NULL, 0);
+ struct page *page = dequeue_huge_page();
if (!page)
break;
update_and_free_page(page);
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