* atomic helpers. Insert it into the gate_vma so that it is visible
* through ptrace and /proc/<pid>/mem.
*/
-static struct vm_area_struct gate_vma = {
- .vm_start = 0xffff0000,
- .vm_end = 0xffff0000 + PAGE_SIZE,
- .vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC,
-};
+static struct vm_area_struct gate_vma;
static int __init gate_vma_init(void)
{
vma_init(&gate_vma, NULL);
gate_vma.vm_page_prot = PAGE_READONLY_EXEC;
+ gate_vma.vm_start = 0xffff0000;
+ gate_vma.vm_end = 0xffff0000 + PAGE_SIZE;
+ gate_vma.vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC;
return 0;
}
arch_initcall(gate_vma_init);
int i, freed = 0;
bool truncate_op = (lend == LLONG_MAX);
- memset(&pseudo_vma, 0, sizeof(struct vm_area_struct));
vma_init(&pseudo_vma, current->mm);
pseudo_vma.vm_flags = (VM_HUGETLB | VM_MAYSHARE | VM_SHARED);
pagevec_init(&pvec);
* allocation routines. If NUMA is configured, use page index
* as input to create an allocation policy.
*/
- memset(&pseudo_vma, 0, sizeof(struct vm_area_struct));
vma_init(&pseudo_vma, mm);
pseudo_vma.vm_flags = (VM_HUGETLB | VM_MAYSHARE | VM_SHARED);
pseudo_vma.vm_file = file;
{
static const struct vm_operations_struct dummy_vm_ops = {};
+ memset(vma, 0, sizeof(*vma));
vma->vm_mm = mm;
vma->vm_ops = &dummy_vm_ops;
INIT_LIST_HEAD(&vma->anon_vma_chain);
struct vm_area_struct *vm_area_alloc(struct mm_struct *mm)
{
- struct vm_area_struct *vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+ struct vm_area_struct *vma;
+ vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
if (vma)
vma_init(vma, mm);
return vma;
goto put_new;
/* Create pseudo-vma that contains just the policy */
- memset(&pvma, 0, sizeof(struct vm_area_struct));
vma_init(&pvma, NULL);
pvma.vm_end = TASK_SIZE; /* policy covers entire file */
mpol_set_shared_policy(sp, &pvma, new); /* adds ref */
struct shmem_inode_info *info, pgoff_t index)
{
/* Create a pseudo vma that just contains the policy */
- memset(vma, 0, sizeof(*vma));
vma_init(vma, NULL);
/* Bias interleave by inode number to distribute better across nodes */
vma->vm_pgoff = index + info->vfs_inode.i_ino;