/*
* mspec_close
*
* Called when unmapping a device mapping. Frees all mspec pages
* belonging to all the vma's sharing this vma_data structure.
*/
static void
mspec_close(struct vm_area_struct *vma)
{
struct vma_data *vdata;
int index, last_index;
unsigned long my_page;
vdata = vma->vm_private_data;
if (!atomic_dec_and_test(&vdata->refcnt))
return;
last_index = (vdata->vm_end - vdata->vm_start) >> PAGE_SHIFT;
for (index = 0; index < last_index; index++) {
if (vdata->maddr[index] == 0)
continue;
/*
* Clear the page before sticking it back
* into the pool.
*/
my_page = vdata->maddr[index];
vdata->maddr[index] = 0;
if (!mspec_zero_block(my_page, PAGE_SIZE))
uncached_free_page(my_page, 1);
else
printk(KERN_WARNING "mspec_close(): "
"failed to zero page %ld\n", my_page);
}
kvfree(vdata);
}
/*
* mspec_close
*
* Called when unmapping a device mapping. Frees all mspec pages
* belonging to the vma.
*/
static void
mspec_close(struct vm_area_struct *vma)
{
struct vma_data *vdata;
int i, pages, result, vdata_size;
vdata = vma->vm_private_data;
if (!atomic_dec_and_test(&vdata->refcnt))
return;
pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
vdata_size = sizeof(struct vma_data) + pages * sizeof(long);
for (i = 0; i < pages; i++) {
if (vdata->maddr[i] == 0)
continue;
/*
* Clear the page before sticking it back
* into the pool.
*/
result = mspec_zero_block(vdata->maddr[i], PAGE_SIZE);
if (!result)
uncached_free_page(vdata->maddr[i]);
else
printk(KERN_WARNING "mspec_close(): "
"failed to zero page %i\n",
result);
}
if (vdata_size <= PAGE_SIZE)
kfree(vdata);
else
vfree(vdata);
}
