string: on strstrip(), first remove leading spaces before running over str

[safe/jmp/linux-2.6] / mm / nommu.c

diff --git a/mm/nommu.c b/mm/nommu.c
index c73aa47..8687973 100644 (file)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -79,7 +79,7 @@ static struct kmem_cache *vm_region_jar;
 struct rb_root nommu_region_tree = RB_ROOT;
 DECLARE_RWSEM(nommu_region_sem);
 
-struct vm_operations_struct generic_file_vm_ops = {
+const struct vm_operations_struct generic_file_vm_ops = {
 };
 
 /*
@@ -1143,9 +1143,6 @@ static int do_mmap_private(struct vm_area_struct *vma,
                if (ret < rlen)
                        memset(base + ret, 0, rlen - ret);
 
-       } else {
-               /* if it's an anonymous mapping, then just clear it */
-               memset(base, 0, rlen);
        }
 
        return 0;
@@ -1343,6 +1340,11 @@ unsigned long do_mmap_pgoff(struct file *file,
                goto error_just_free;
        add_nommu_region(region);
 
+       /* clear anonymous mappings that don't ask for uninitialized data */
+       if (!vma->vm_file && !(flags & MAP_UNINITIALIZED))
+               memset((void *)region->vm_start, 0,
+                      region->vm_end - region->vm_start);
+
        /* okay... we have a mapping; now we have to register it */
        result = vma->vm_start;
 
@@ -1362,9 +1364,11 @@ share:
 error_just_free:
        up_write(&nommu_region_sem);
 error:
-       fput(region->vm_file);
+       if (region->vm_file)
+               fput(region->vm_file);
        kmem_cache_free(vm_region_jar, region);
-       fput(vma->vm_file);
+       if (vma->vm_file)
+               fput(vma->vm_file);
        if (vma->vm_flags & VM_EXECUTABLE)
                removed_exe_file_vma(vma->vm_mm);
        kmem_cache_free(vm_area_cachep, vma);