static int saveable(unsigned long * pfn)
{
struct page * page = pfn_to_page(*pfn);
if (PageNosave(page))
return 0;
if (!PageReserved(page)) {
int chunk_size;
if ((chunk_size = is_head_of_free_region(page))) {
*pfn += chunk_size - 1;
return 0;
}
} else if (PageReserved(page)) {
/* Just copy whole code segment.
* Hopefully it is not that big.
*/
if ((ADDRESS(*pfn) >= (unsigned long) ADDRESS2(&__nosave_begin)) &&
(ADDRESS(*pfn) < (unsigned long) ADDRESS2(&__nosave_end))) {
pr_debug("[nosave %lx]\n", ADDRESS(*pfn));
return 0;
}
/* Hmm, perhaps copying all reserved pages is not
* too healthy as they may contain
* critical bios data?
*/
}
return 1;
}
/* if pagedir_p != NULL it also copies the counted pages */
static int count_and_copy_data_pages(struct pbe *pagedir_p)
{
int chunk_size;
int nr_copy_pages = 0;
int pfn;
struct page *page;
#ifdef CONFIG_DISCONTIGMEM
panic("Discontingmem not supported");
#else
BUG_ON (max_pfn != num_physpages);
#endif
for (pfn = 0; pfn < max_pfn; pfn++) {
page = pfn_to_page(pfn);
if (PageHighMem(page))
panic("Swsusp not supported on highmem boxes. Send 1GB of RAM to <*****@*****.**> and try again ;-).");
if (!PageReserved(page)) {
if (PageNosave(page))
continue;
if ((chunk_size=is_head_of_free_region(page))!=0) {
pfn += chunk_size - 1;
continue;
}
} else if (PageReserved(page)) {
BUG_ON (PageNosave(page));
/*
* Just copy whole code segment. Hopefully it is not that big.
*/
if ((ADDRESS(pfn) >= (unsigned long) ADDRESS2(&__nosave_begin)) &&
(ADDRESS(pfn) < (unsigned long) ADDRESS2(&__nosave_end))) {
PRINTK("[nosave %lx]", ADDRESS(pfn));
continue;
}
/* Hmm, perhaps copying all reserved pages is not too healthy as they may contain
critical bios data? */
} else BUG();
nr_copy_pages++;
if (pagedir_p) {
pagedir_p->orig_address = ADDRESS(pfn);
copy_page((void *) pagedir_p->address, (void *) pagedir_p->orig_address);
pagedir_p++;
}
}
return nr_copy_pages;
}
