mm/hugetlb: remove unused arch hook prepare/release_hugepage

With s390 dropping support for emulated hugepages, the last user of
arch_prepare_hugepage and arch_release_hugepage is gone.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 75c0eef..a8c3087 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -975,7 +975,6 @@ static void update_and_free_page(struct hstate *h, struct page *page)
                destroy_compound_gigantic_page(page, huge_page_order(h));
                free_gigantic_page(page, huge_page_order(h));
        } else {
-               arch_release_hugepage(page);
                __free_pages(page, huge_page_order(h));
        }
 }
@@ -1160,10 +1159,6 @@ static struct page *alloc_fresh_huge_page_node(struct hstate *h, int nid)
                                                __GFP_REPEAT|__GFP_NOWARN,
                huge_page_order(h));
        if (page) {
-               if (arch_prepare_hugepage(page)) {
-                       __free_pages(page, huge_page_order(h));
-                       return NULL;
-               }
                prep_new_huge_page(h, page, nid);
        }
 
@@ -1315,11 +1310,6 @@ static struct page *alloc_buddy_huge_page(struct hstate *h, int nid)
                        htlb_alloc_mask(h)|__GFP_COMP|__GFP_THISNODE|
                        __GFP_REPEAT|__GFP_NOWARN, huge_page_order(h));
 
-       if (page && arch_prepare_hugepage(page)) {
-               __free_pages(page, huge_page_order(h));
-               page = NULL;
-       }
-
        spin_lock(&hugetlb_lock);
        if (page) {
                INIT_LIST_HEAD(&page->lru);