[SCSI] scsi_lib.c: use BUILD_BUG_ON

[linux-2.6-omap-h63xx.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index df499973255fdfb3397a92221cb5217bcb70d10d..1d709ff528e1e91cd9bbbf086f119c5d4ba3154a 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -72,7 +72,7 @@ static struct page *dequeue_huge_page(struct vm_area_struct *vma,
        struct zone **z;
 
        for (z = zonelist->zones; *z; z++) {
-               nid = (*z)->zone_pgdat->node_id;
+               nid = zone_to_nid(*z);
                if (cpuset_zone_allowed(*z, GFP_HIGHUSER) &&
                    !list_empty(&hugepage_freelists[nid]))
                        break;
@@ -177,7 +177,7 @@ static void update_and_free_page(struct page *page)
 {
        int i;
        nr_huge_pages--;
-       nr_huge_pages_node[page_zone(page)->zone_pgdat->node_id]--;
+       nr_huge_pages_node[page_to_nid(page)]--;
        for (i = 0; i < (HPAGE_SIZE / PAGE_SIZE); i++) {
                page[i].flags &= ~(1 << PG_locked | 1 << PG_error | 1 << PG_referenced |
                                1 << PG_dirty | 1 << PG_active | 1 << PG_reserved |
@@ -191,7 +191,8 @@ static void update_and_free_page(struct page *page)
 #ifdef CONFIG_HIGHMEM
 static void try_to_free_low(unsigned long count)
 {
-       int i, nid;
+       int i;
+
        for (i = 0; i < MAX_NUMNODES; ++i) {
                struct page *page, *next;
                list_for_each_entry_safe(page, next, &hugepage_freelists[i], lru) {
@@ -199,9 +200,8 @@ static void try_to_free_low(unsigned long count)
                                continue;
                        list_del(&page->lru);
                        update_and_free_page(page);
-                       nid = page_zone(page)->zone_pgdat->node_id;
                        free_huge_pages--;
-                       free_huge_pages_node[nid]--;
+                       free_huge_pages_node[page_to_nid(page)]--;
                        if (count >= nr_huge_pages)
                                return;
                }
@@ -364,6 +364,8 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
        pte_t *ptep;
        pte_t pte;
        struct page *page;
+       struct page *tmp;
+       LIST_HEAD(page_list);
 
        WARN_ON(!is_vm_hugetlb_page(vma));
        BUG_ON(start & ~HPAGE_MASK);
@@ -384,12 +386,16 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
                        continue;
 
                page = pte_page(pte);
-               put_page(page);
+               list_add(&page->lru, &page_list);
                add_mm_counter(mm, file_rss, (int) -(HPAGE_SIZE / PAGE_SIZE));
        }
 
        spin_unlock(&mm->page_table_lock);
        flush_tlb_range(vma, start, end);
+       list_for_each_entry_safe(page, tmp, &page_list, lru) {
+               list_del(&page->lru);
+               put_page(page);
+       }
 }
 
 static int hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma,