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Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 30d5093a099d..e0f2cdf9d8b1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1153,10 +1153,10 @@ again:
* properly detect and handle allocation failures.
*
* We most definitely don't want callers attempting to
- * allocate greater than single-page units with
+ * allocate greater than order-1 page units with
* __GFP_NOFAIL.
*/
- WARN_ON_ONCE(order > 0);
+ WARN_ON_ONCE(order > 1);
}
spin_lock_irqsave(&zone->lock, flags);
page = __rmqueue(zone, order, migratetype);
@@ -3026,7 +3026,7 @@ bad:
if (dzone == zone)
break;
kfree(zone_pcp(dzone, cpu));
- zone_pcp(dzone, cpu) = NULL;
+ zone_pcp(dzone, cpu) = &boot_pageset[cpu];
}
return -ENOMEM;
}
@@ -3041,7 +3041,7 @@ static inline void free_zone_pagesets(int cpu)
/* Free per_cpu_pageset if it is slab allocated */
if (pset != &boot_pageset[cpu])
kfree(pset);
- zone_pcp(zone, cpu) = NULL;
+ zone_pcp(zone, cpu) = &boot_pageset[cpu];
}
}
@@ -4032,6 +4032,8 @@ static void __init find_zone_movable_pfns_for_nodes(unsigned long *movable_pfn)
int i, nid;
unsigned long usable_startpfn;
unsigned long kernelcore_node, kernelcore_remaining;
+ /* save the state before borrow the nodemask */
+ nodemask_t saved_node_state = node_states[N_HIGH_MEMORY];
unsigned long totalpages = early_calculate_totalpages();
int usable_nodes = nodes_weight(node_states[N_HIGH_MEMORY]);
@@ -4059,7 +4061,7 @@ static void __init find_zone_movable_pfns_for_nodes(unsigned long *movable_pfn)
/* If kernelcore was not specified, there is no ZONE_MOVABLE */
if (!required_kernelcore)
- return;
+ goto out;
/* usable_startpfn is the lowest possible pfn ZONE_MOVABLE can be at */
find_usable_zone_for_movable();
@@ -4158,6 +4160,10 @@ restart:
for (nid = 0; nid < MAX_NUMNODES; nid++)
zone_movable_pfn[nid] =
roundup(zone_movable_pfn[nid], MAX_ORDER_NR_PAGES);
+
+out:
+ /* restore the node_state */
+ node_states[N_HIGH_MEMORY] = saved_node_state;
}
/* Any regular memory on that node ? */
@@ -4242,11 +4248,6 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
early_node_map[i].start_pfn,
early_node_map[i].end_pfn);
- /*
- * find_zone_movable_pfns_for_nodes/early_calculate_totalpages init
- * that node_mask, clear it at first
- */
- nodes_clear(node_states[N_HIGH_MEMORY]);
/* Initialise every node */
mminit_verify_pageflags_layout();
setup_nr_node_ids();
@@ -4659,7 +4660,7 @@ int percpu_pagelist_fraction_sysctl_handler(ctl_table *table, int write,
ret = proc_dointvec_minmax(table, write, file, buffer, length, ppos);
if (!write || (ret == -EINVAL))
return ret;
- for_each_zone(zone) {
+ for_each_populated_zone(zone) {
for_each_online_cpu(cpu) {
unsigned long high;
high = zone->present_pages / percpu_pagelist_fraction;