Merge branch 'upstream-linus' of git://oss.oracle.com/home/sourcebo/git/ocfs2

[sfrench/cifs-2.6.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 6c997b159600b89b6d6cb4b5a4059e8adf3b0e92..4f5b5709136abbe6c08b306ac35ac92740cb04d8 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -13,6 +13,7 @@
 #include <linux/pagemap.h>
 #include <linux/swap.h>
 #include <linux/syscalls.h>
+#include <linux/capability.h>
 #include <linux/init.h>
 #include <linux/file.h>
 #include <linux/fs.h>
@@ -611,7 +612,7 @@ again:                      remove_next = 1 + (end > next->vm_end);
  * If the vma has a ->close operation then the driver probably needs to release
  * per-vma resources, so we don't attempt to merge those.
  */
-#define VM_SPECIAL (VM_IO | VM_DONTCOPY | VM_DONTEXPAND | VM_RESERVED)
+#define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_PFNMAP)
 
 static inline int is_mergeable_vma(struct vm_area_struct *vma,
                        struct file *file, unsigned long vm_flags)
@@ -844,14 +845,6 @@ void vm_stat_account(struct mm_struct *mm, unsigned long flags,
        const unsigned long stack_flags
                = VM_STACK_FLAGS & (VM_GROWSUP|VM_GROWSDOWN);
 
-#ifdef CONFIG_HUGETLB
-       if (flags & VM_HUGETLB) {
-               if (!(flags & VM_DONTCOPY))
-                       mm->shared_vm += pages;
-               return;
-       }
-#endif /* CONFIG_HUGETLB */
-
        if (file) {
                mm->shared_vm += pages;
                if ((flags & (VM_EXEC|VM_WRITE)) == VM_EXEC)
@@ -1047,12 +1040,11 @@ munmap_back:
         * specific mapper. the address has already been validated, but
         * not unmapped, but the maps are removed from the list.
         */
-       vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
+       vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
        if (!vma) {
                error = -ENOMEM;
                goto unacct_error;
        }
-       memset(vma, 0, sizeof(*vma));
 
        vma->vm_mm = mm;
        vma->vm_start = addr;
@@ -1076,17 +1068,6 @@ munmap_back:
                error = file->f_op->mmap(file, vma);
                if (error)
                        goto unmap_and_free_vma;
-               if ((vma->vm_flags & (VM_SHARED | VM_WRITE | VM_RESERVED))
-                                               == (VM_WRITE | VM_RESERVED)) {
-                       printk(KERN_WARNING "program %s is using MAP_PRIVATE, "
-                               "PROT_WRITE mmap of VM_RESERVED memory, which "
-                               "is deprecated. Please report this to "
-                               "linux-kernel@vger.kernel.org\n",current->comm);
-                       if (vma->vm_ops && vma->vm_ops->close)
-                               vma->vm_ops->close(vma);
-                       error = -EACCES;
-                       goto unmap_and_free_vma;
-               }
        } else if (vm_flags & VM_SHARED) {
                error = shmem_zero_setup(vma);
                if (error)
@@ -1501,7 +1482,7 @@ static int acct_stack_growth(struct vm_area_struct * vma, unsigned long size, un
  * PA-RISC uses this for its stack; IA64 for its Register Backing Store.
  * vma is the last one with address > vma->vm_end.  Have to extend vma.
  */
-#ifdef CONFIG_STACK_GROWSUP
+#ifndef CONFIG_IA64
 static inline
 #endif
 int expand_upwards(struct vm_area_struct *vma, unsigned long address)
@@ -1914,12 +1895,11 @@ unsigned long do_brk(unsigned long addr, unsigned long len)
        /*
         * create a vma struct for an anonymous mapping
         */
-       vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
+       vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
        if (!vma) {
                vm_unacct_memory(len >> PAGE_SHIFT);
                return -ENOMEM;
        }
-       memset(vma, 0, sizeof(*vma));
 
        vma->vm_mm = mm;
        vma->vm_start = addr;