Merge branch 'for-5.1/nfit/ars' into libnvdimm-for-next

Merge several updates to the ARS implementation. Highlights include:

* Support retrieval of short-ARS results if the ARS state is "requires
  continuation", and even if the "no_init_ars" module parameter is
  specified.
* Allow busy-polling of the kernel ARS state by allowing root to reset
  the exponential back-off timer.
* Filter potentially stale ARS results by tracking query-ARS relative to
  the previous start-ARS.

1 files changed, 15 insertions, 8 deletions

diff --git a/lib/test_rhashtable.c b/lib/test_rhashtable.c
index 6a8ac7626797..e52f8cafe227 100644
--- a/lib/test_rhashtable.c
+++ b/lib/test_rhashtable.c
@@ -541,38 +541,45 @@ static unsigned int __init print_ht(struct rhltable *rhlt)
 static int __init test_insert_dup(struct test_obj_rhl *rhl_test_objects,
                                   int cnt, bool slow)
 {
-        struct rhltable rhlt;
+        struct rhltable *rhlt;
         unsigned int i, ret;
         const char *key;
         int err = 0;
 
-        err = rhltable_init(&rhlt, &test_rht_params_dup);
-        if (WARN_ON(err))
+        rhlt = kmalloc(sizeof(*rhlt), GFP_KERNEL);
+        if (WARN_ON(!rhlt))
+                return -EINVAL;
+
+        err = rhltable_init(rhlt, &test_rht_params_dup);
+        if (WARN_ON(err)) {
+                kfree(rhlt);
                 return err;
+        }
 
         for (i = 0; i < cnt; i++) {
                 rhl_test_objects[i].value.tid = i;
-                key = rht_obj(&rhlt.ht, &rhl_test_objects[i].list_node.rhead);
+                key = rht_obj(&rhlt->ht, &rhl_test_objects[i].list_node.rhead);
                 key += test_rht_params_dup.key_offset;
 
                 if (slow) {
-                        err = PTR_ERR(rhashtable_insert_slow(&rhlt.ht, key,
+                        err = PTR_ERR(rhashtable_insert_slow(&rhlt->ht, key,
                                                              &rhl_test_objects[i].list_node.rhead));
                         if (err == -EAGAIN)
                                 err = 0;
                 } else
-                        err = rhltable_insert(&rhlt,
+                        err = rhltable_insert(rhlt,
                                               &rhl_test_objects[i].list_node,
                                               test_rht_params_dup);
                 if (WARN(err, "error %d on element %d/%d (%s)\n", err, i, cnt, slow? "slow" : "fast"))
                         goto skip_print;
         }
 
-        ret = print_ht(&rhlt);
+        ret = print_ht(rhlt);
         WARN(ret != cnt, "missing rhltable elements (%d != %d, %s)\n", ret, cnt, slow? "slow" : "fast");
 
 skip_print:
-        rhltable_destroy(&rhlt);
+        rhltable_destroy(rhlt);
+        kfree(rhlt);
 
         return 0;
 }