if (new_flags == vma->vm_flags) {
*prev = vma;
- goto success;
+ goto out;
}
pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT);
goto out;
}
+success:
/*
* vm_flags is protected by the mmap_sem held in write mode.
*/
- VM_ClearReadHint(vma);
vma->vm_flags = new_flags;
out:
if (error == -ENOMEM)
error = -EAGAIN;
-success:
return error;
}
if (!file)
return -EBADF;
+ if (file->f_mapping->a_ops->get_xip_page) {
+ /* no bad return value, but ignore advice */
+ return 0;
+ }
+
*prev = vma;
start = ((start - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
if (end > vma->vm_end)
return 0;
}
-static long madvise_vma(struct vm_area_struct *vma, struct vm_area_struct **prev,
- unsigned long start, unsigned long end, int behavior)
+static long
+madvise_vma(struct vm_area_struct *vma, struct vm_area_struct **prev,
+ unsigned long start, unsigned long end, int behavior)
{
- long error = -EBADF;
+ long error;
switch (behavior) {
case MADV_NORMAL:
error = -EINVAL;
break;
}
-
return error;
}
* - different from the way of handling in mlock etc.
*/
vma = find_vma_prev(current->mm, start, &prev);
- if (!vma && prev)
- vma = prev->vm_next;
+ if (vma && start > vma->vm_start)
+ prev = vma;
+
for (;;) {
/* Still start < end. */
error = -ENOMEM;