On Thu, Apr 18, 2019 at 11:41:15AM +0800, WANG Chao wrote:
> count_threshol == 1 isn't working as expected. CEC only does soft
> offline the second time the same pfn is hit by a correctable error.

So this?

---
diff --git a/drivers/ras/cec.c b/drivers/ras/cec.c
index b3c377ddf340..750a427e1a73 100644
--- a/drivers/ras/cec.c
+++ b/drivers/ras/cec.c
@@ -333,6 +333,7 @@ int cec_add_elem(u64 pfn)
 
        mutex_lock(&ce_mutex);
 
+       /* Array full, free the LRU slot. */
        if (ca->n == MAX_ELEMS)
                WARN_ON(!del_lru_elem_unlocked(ca));
 
@@ -346,14 +347,9 @@ int cec_add_elem(u64 pfn)
                        (void *)&ca->array[to],
                        (ca->n - to) * sizeof(u64));
 
-               ca->array[to] = (pfn << PAGE_SHIFT) |
-                               (DECAY_MASK << COUNT_BITS) | 1;
+               ca->array[to] = (pfn << PAGE_SHIFT) | 1;
 
                ca->n++;
-
-               ret = 0;
-
-               goto decay;
        }
 
        count = COUNT(ca->array[to]);
@@ -386,7 +382,6 @@ int cec_add_elem(u64 pfn)
                goto unlock;
        }
 
-decay:
        ca->decay_count++;
 
        if (ca->decay_count >= CLEAN_ELEMS)

-- 
Regards/Gruss,
    Boris.

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