pset = per_cpu_ptr(zone->pageset, cpu);
pcp = &pset->pcp;
- free_pcppages_bulk(zone, pcp->count, pcp);
- pcp->count = 0;
+ if (pcp->count) {
+ free_pcppages_bulk(zone, pcp->count, pcp);
+ pcp->count = 0;
+ }
local_irq_restore(flags);
}
}
*/
alloc_flags = gfp_to_alloc_flags(gfp_mask);
+ /*
+ * Find the true preferred zone if the allocation is unconstrained by
+ * cpusets.
+ */
+ if (!(alloc_flags & ALLOC_CPUSET) && !nodemask)
+ first_zones_zonelist(zonelist, high_zoneidx, NULL,
+ &preferred_zone);
+
/* This is the last chance, in general, before the goto nopage. */
page = get_page_from_freelist(gfp_mask, nodemask, order, zonelist,
high_zoneidx, alloc_flags & ~ALLOC_NO_WATERMARKS,
get_mems_allowed();
/* The preferred zone is used for statistics later */
- first_zones_zonelist(zonelist, high_zoneidx, nodemask, &preferred_zone);
+ first_zones_zonelist(zonelist, high_zoneidx,
+ nodemask ? : &cpuset_current_mems_allowed,
+ &preferred_zone);
if (!preferred_zone) {
put_mems_allowed();
return NULL;
for (found = 0, iter = 0; iter < pageblock_nr_pages; iter++) {
unsigned long check = pfn + iter;
- if (!pfn_valid_within(check)) {
- iter++;
+ if (!pfn_valid_within(check))
continue;
- }
+
page = pfn_to_page(check);
if (!page_count(page)) {
if (PageBuddy(page))