hugetlb: factor out prep_new_huge_page

Needed to avoid code duplication in follow up patches.

Acked-by: Adam Litke <agl@us.ibm.com>
Acked-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 6 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index eda9642254a0..32dff4290c66 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -513,6 +513,16 @@ static int adjust_pool_surplus(int delta)
         return ret;
 }
 
+static void prep_new_huge_page(struct page *page, int nid)
+{
+        set_compound_page_dtor(page, free_huge_page);
+        spin_lock(&hugetlb_lock);
+        nr_huge_pages++;
+        nr_huge_pages_node[nid]++;
+        spin_unlock(&hugetlb_lock);
+        put_page(page); /* free it into the hugepage allocator */
+}
+
 static struct page *alloc_fresh_huge_page_node(int nid)
 {
         struct page *page;
@@ -526,12 +536,7 @@ static struct page *alloc_fresh_huge_page_node(int nid)
                         __free_pages(page, HUGETLB_PAGE_ORDER);
                         return NULL;
                 }
-                set_compound_page_dtor(page, free_huge_page);
-                spin_lock(&hugetlb_lock);
-                nr_huge_pages++;
-                nr_huge_pages_node[nid]++;
-                spin_unlock(&hugetlb_lock);
-                put_page(page); /* free it into the hugepage allocator */
+                prep_new_huge_page(page, nid);
         }
 
         return page;