X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fmm%2Fhugetlbpage.c;h=1bb20d841080cb0cbdb739bfd0facd9f5ef496bd;hb=6aa3e1e9447134ccda8b04b91c4ba8182274a78e;hp=506d89768d455ba8625ed480d4122c7d1c8264c9;hpb=bdbf77d6707a52bdeff223d0a60df12d086d21d7;p=powerpc.git

diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 506d89768d..1bb20d8410 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -146,6 +146,11 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
 	return hugepte_offset(hpdp, addr);
 }
 
+int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
+{
+	return 0;
+}
+
 static void free_hugepte_range(struct mmu_gather *tlb, hugepd_t *hpdp)
 {
 	pte_t *hugepte = hugepd_page(*hpdp);
@@ -739,7 +744,8 @@ static int htlb_check_hinted_area(unsigned long addr, unsigned long len)
 	struct vm_area_struct *vma;
 
 	vma = find_vma(current->mm, addr);
-	if (!vma || ((addr + len) <= vma->vm_start))
+	if (TASK_SIZE - len >= addr &&
+	    (!vma || ((addr + len) <= vma->vm_start)))
 		return 0;
 
 	return -ENOMEM;
@@ -810,6 +816,8 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		return -EINVAL;
 	if (len & ~HPAGE_MASK)
 		return -EINVAL;
+	if (len > TASK_SIZE)
+		return -ENOMEM;
 
 	if (!cpu_has_feature(CPU_FTR_16M_PAGE))
 		return -EINVAL;
@@ -818,9 +826,6 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 	BUG_ON((addr + len)  < addr);
 
 	if (test_thread_flag(TIF_32BIT)) {
-		/* Paranoia, caller should have dealt with this */
-		BUG_ON((addr + len) > 0x100000000UL);
-
 		curareas = current->mm->context.low_htlb_areas;
 
 		/* First see if we can use the hint address */
@@ -1042,7 +1047,7 @@ repeat:
 	return err;
 }
 
-static void zero_ctor(void *addr, kmem_cache_t *cache, unsigned long flags)
+static void zero_ctor(void *addr, struct kmem_cache *cache, unsigned long flags)
 {
 	memset(addr, 0, kmem_cache_size(cache));
 }