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-rw-r--r--mm/page_alloc.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 85cf0f715eb0..6f28b7e926d1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3804,9 +3804,17 @@ retry_cpuset:
/*
* Restore the original nodemask if it was potentially replaced with
* &cpuset_current_mems_allowed to optimize the fast-path attempt.
+ * Also recalculate the starting point for the zonelist iterator or
+ * we could end up iterating over non-eligible zones endlessly.
*/
- if (cpusets_enabled())
+ if (unlikely(ac.nodemask != nodemask)) {
ac.nodemask = nodemask;
+ ac.preferred_zoneref = first_zones_zonelist(ac.zonelist,
+ ac.high_zoneidx, ac.nodemask);
+ if (!ac.preferred_zoneref->zone)
+ goto no_zone;
+ }
+
page = __alloc_pages_slowpath(alloc_mask, order, &ac);
no_zone: