}
/**
- * write_swap_page - Write one page to a fresh swap location.
+ * write_page - Write one page to a fresh swap location.
* @addr: Address we're writing.
* @loc: Place to store the entry we used.
*
static void data_free(void)
{
swp_entry_t entry;
- int i;
+ struct pbe * p;
- for (i = 0; i < nr_copy_pages; i++) {
- entry = (pagedir_nosave + i)->swap_address;
+ for_each_pbe(p, pagedir_nosave) {
+ entry = p->swap_address;
if (entry.val)
swap_free(entry);
else
break;
- (pagedir_nosave + i)->swap_address = (swp_entry_t){0};
}
}
return 0;
}
+/* Free pages we allocated for suspend. Suspend pages are alocated
+ * before atomic copy, so we need to free them after resume.
+ */
void swsusp_free(void)
{
BUG_ON(PageNosave(virt_to_page(pagedir_save)));
pagedir_nosave = NULL;
nr_copy_pages = calc_nr(nr_copy_pages);
+ nr_copy_pages_check = nr_copy_pages;
pr_debug("suspend: (pages needed: %d + %d free: %d)\n",
nr_copy_pages, PAGES_FOR_IO, nr_free_pages());
if (!enough_swap())
return -ENOSPC;
+ if (MAX_PBES < nr_copy_pages / PBES_PER_PAGE +
+ !!(nr_copy_pages % PBES_PER_PAGE))
+ return -ENOSPC;
+
if (!(pagedir_save = alloc_pagedir(nr_copy_pages))) {
printk(KERN_ERR "suspend: Allocating pagedir failed.\n");
return -ENOMEM;
return error;
}
- nr_copy_pages_check = nr_copy_pages;
return 0;
}
BUG_ON(!error);
restore_processor_state();
restore_highmem();
+ touch_softlockup_watchdog();
device_power_up();
local_irq_enable();
return error;
*eaten_memory = c;
}
-static unsigned long get_usable_page(unsigned gfp_mask)
+unsigned long get_usable_page(unsigned gfp_mask)
{
unsigned long m;
return m;
}
-static void free_eaten_memory(void)
+void free_eaten_memory(void)
{
unsigned long m;
void **c;
free_pagedir(pblist);
free_eaten_memory();
pblist = NULL;
- }
- else
+ /* Is this even worth handling? It should never ever happen, and we
+ have just lost user's state, anyway... */
+ } else
printk("swsusp: Relocated %d pages\n", rel);
return pblist;
}
if (error)
- free_page((unsigned long)pblist);
-
- BUG_ON(i != swsusp_info.pagedir_pages);
+ free_pagedir(pblist);
+ else
+ BUG_ON(i != swsusp_info.pagedir_pages);
return error;
}
/* Allocate memory for the image and read the data from swap */
error = check_pagedir(pagedir_nosave);
- free_eaten_memory();
+
if (!error)
error = data_read(pagedir_nosave);
if (error) { /* We fail cleanly */
+ free_eaten_memory();
for_each_pbe (p, pagedir_nosave)
if (p->address) {
free_page(p->address);