usb: gadget: composite: correctly initialize ep->maxpacket

[firefly-linux-kernel-4.4.55.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 125c7dd553228fa7b3a66a8b00495b7960ace306..4434cdd4cd9a6af734a32ff3cae884e9146cd90e 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1416,12 +1416,13 @@ static void dissolve_free_huge_page(struct page *page)
 {
        spin_lock(&hugetlb_lock);
        if (PageHuge(page) && !page_count(page)) {
-               struct hstate *h = page_hstate(page);
-               int nid = page_to_nid(page);
-               list_del(&page->lru);
+               struct page *head = compound_head(page);
+               struct hstate *h = page_hstate(head);
+               int nid = page_to_nid(head);
+               list_del(&head->lru);
                h->free_huge_pages--;
                h->free_huge_pages_node[nid]--;
-               update_and_free_page(h, page);
+               update_and_free_page(h, head);
        }
        spin_unlock(&hugetlb_lock);
 }
@@ -1429,7 +1430,8 @@ static void dissolve_free_huge_page(struct page *page)
 /*
  * Dissolve free hugepages in a given pfn range. Used by memory hotplug to
  * make specified memory blocks removable from the system.
- * Note that start_pfn should aligned with (minimum) hugepage size.
+ * Note that this will dissolve a free gigantic hugepage completely, if any
+ * part of it lies within the given range.
  */
 void dissolve_free_huge_pages(unsigned long start_pfn, unsigned long end_pfn)
 {
@@ -1438,7 +1440,6 @@ void dissolve_free_huge_pages(unsigned long start_pfn, unsigned long end_pfn)
        if (!hugepages_supported())
                return;
 
-       VM_BUG_ON(!IS_ALIGNED(start_pfn, 1 << minimum_order));
        for (pfn = start_pfn; pfn < end_pfn; pfn += 1 << minimum_order)
                dissolve_free_huge_page(pfn_to_page(pfn));
 }