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-rw-r--r--mm/page_alloc.c35
1 files changed, 22 insertions, 13 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9119faae6e6..830a465958d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1664,7 +1664,7 @@ zonelist_scan:
continue;
if ((alloc_flags & ALLOC_CPUSET) &&
!cpuset_zone_allowed_softwall(zone, gfp_mask))
- goto try_next_zone;
+ continue;
BUILD_BUG_ON(ALLOC_NO_WATERMARKS < NR_WMARK);
if (!(alloc_flags & ALLOC_NO_WATERMARKS)) {
@@ -1676,17 +1676,36 @@ zonelist_scan:
classzone_idx, alloc_flags))
goto try_this_zone;
+ if (NUMA_BUILD && !did_zlc_setup && nr_online_nodes > 1) {
+ /*
+ * we do zlc_setup if there are multiple nodes
+ * and before considering the first zone allowed
+ * by the cpuset.
+ */
+ allowednodes = zlc_setup(zonelist, alloc_flags);
+ zlc_active = 1;
+ did_zlc_setup = 1;
+ }
+
if (zone_reclaim_mode == 0)
goto this_zone_full;
+ /*
+ * As we may have just activated ZLC, check if the first
+ * eligible zone has failed zone_reclaim recently.
+ */
+ if (NUMA_BUILD && zlc_active &&
+ !zlc_zone_worth_trying(zonelist, z, allowednodes))
+ continue;
+
ret = zone_reclaim(zone, gfp_mask, order);
switch (ret) {
case ZONE_RECLAIM_NOSCAN:
/* did not scan */
- goto try_next_zone;
+ continue;
case ZONE_RECLAIM_FULL:
/* scanned but unreclaimable */
- goto this_zone_full;
+ continue;
default:
/* did we reclaim enough */
if (!zone_watermark_ok(zone, order, mark,
@@ -1703,16 +1722,6 @@ try_this_zone:
this_zone_full:
if (NUMA_BUILD)
zlc_mark_zone_full(zonelist, z);
-try_next_zone:
- if (NUMA_BUILD && !did_zlc_setup && nr_online_nodes > 1) {
- /*
- * we do zlc_setup after the first zone is tried but only
- * if there are multiple nodes make it worthwhile
- */
- allowednodes = zlc_setup(zonelist, alloc_flags);
- zlc_active = 1;
- did_zlc_setup = 1;
- }
}
if (unlikely(NUMA_BUILD && page == NULL && zlc_active)) {