}
-static void mem_hotplug_begin(void)
+void mem_hotplug_begin(void)
{
mem_hotplug.active_writer = current;
}
}
-static void mem_hotplug_done(void)
+void mem_hotplug_done(void)
{
mem_hotplug.active_writer = NULL;
mutex_unlock(&mem_hotplug.lock);
end_sec = pfn_to_section_nr(phys_start_pfn + nr_pages - 1);
for (i = start_sec; i <= end_sec; i++) {
- err = __add_section(nid, zone, i << PFN_SECTION_SHIFT);
+ err = __add_section(nid, zone, section_nr_to_pfn(i));
/*
* EEXIST is finally dealt with by ioresource collision
}
+/* Must be protected by mem_hotplug_begin() */
int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_type)
{
unsigned long flags;
int ret;
struct memory_notify arg;
- mem_hotplug_begin();
/*
* This doesn't need a lock to do pfn_to_page().
* The section can't be removed here because of the
*/
zone = page_zone(pfn_to_page(pfn));
- ret = -EINVAL;
if ((zone_idx(zone) > ZONE_NORMAL ||
online_type == MMOP_ONLINE_MOVABLE) &&
!can_online_high_movable(zone))
- goto out;
+ return -EINVAL;
if (online_type == MMOP_ONLINE_KERNEL &&
zone_idx(zone) == ZONE_MOVABLE) {
if (move_pfn_range_left(zone - 1, zone, pfn, pfn + nr_pages))
- goto out;
+ return -EINVAL;
}
if (online_type == MMOP_ONLINE_MOVABLE &&
zone_idx(zone) == ZONE_MOVABLE - 1) {
if (move_pfn_range_right(zone, zone + 1, pfn, pfn + nr_pages))
- goto out;
+ return -EINVAL;
}
/* Previous code may changed the zone of the pfn range */
ret = notifier_to_errno(ret);
if (ret) {
memory_notify(MEM_CANCEL_ONLINE, &arg);
- goto out;
+ return ret;
}
/*
* If this zone is not populated, then it is not in zonelist.
(((unsigned long long) pfn + nr_pages)
<< PAGE_SHIFT) - 1);
memory_notify(MEM_CANCEL_ONLINE, &arg);
- goto out;
+ return ret;
}
zone->present_pages += onlined_pages;
if (onlined_pages)
memory_notify(MEM_ONLINE, &arg);
-out:
- mem_hotplug_done();
- return ret;
+ return 0;
}
#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
if (PageLRU(page))
return pfn;
if (PageHuge(page)) {
- if (is_hugepage_active(page))
+ if (page_huge_active(page))
return pfn;
else
pfn = round_up(pfn + 1,
if (!test_pages_in_a_zone(start_pfn, end_pfn))
return -EINVAL;
- mem_hotplug_begin();
-
zone = page_zone(pfn_to_page(start_pfn));
node = zone_to_nid(zone);
nr_pages = end_pfn - start_pfn;
- ret = -EINVAL;
if (zone_idx(zone) <= ZONE_NORMAL && !can_offline_normal(zone, nr_pages))
- goto out;
+ return -EINVAL;
/* set above range as isolated */
ret = start_isolate_page_range(start_pfn, end_pfn,
MIGRATE_MOVABLE, true);
if (ret)
- goto out;
+ return ret;
arg.start_pfn = start_pfn;
arg.nr_pages = nr_pages;
writeback_set_ratelimit();
memory_notify(MEM_OFFLINE, &arg);
- mem_hotplug_done();
return 0;
failed_removal:
memory_notify(MEM_CANCEL_OFFLINE, &arg);
/* pushback to free area */
undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
-
-out:
- mem_hotplug_done();
return ret;
}
+/* Must be protected by mem_hotplug_begin() */
int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
{
return __offline_pages(start_pfn, start_pfn + nr_pages, 120 * HZ);