When bandblocks_set acknowledges a range or badblocks_clear a range,
it's possible all badblocks are acknowledged. We should update
unacked_exist if this occurs.

Signed-off-by: Shaohua Li <[email protected]>
---
 block/badblocks.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/block/badblocks.c b/block/badblocks.c
index 7be53cb..139115d2 100644
--- a/block/badblocks.c
+++ b/block/badblocks.c
@@ -133,6 +133,26 @@ int badblocks_check(struct badblocks *bb, sector_t s, int 
sectors,
 }
 EXPORT_SYMBOL_GPL(badblocks_check);
 
+static void badblocks_update_acked(struct badblocks *bb)
+{
+       u64 *p = bb->page;
+       int i;
+       bool unacked = false;
+
+       if (!bb->unacked_exist)
+               return;
+
+       for (i = 0; i < bb->count ; i++) {
+               if (!BB_ACK(p[i])) {
+                       unacked = true;
+                       break;
+               }
+       }
+
+       if (!unacked)
+               bb->unacked_exist = 0;
+}
+
 /**
  * badblocks_set() - Add a range of bad blocks to the table.
  * @bb:                the badblocks structure that holds all badblock 
information
@@ -294,6 +314,8 @@ int badblocks_set(struct badblocks *bb, sector_t s, int 
sectors,
        bb->changed = 1;
        if (!acknowledged)
                bb->unacked_exist = 1;
+       else
+               badblocks_update_acked(bb);
        write_sequnlock_irqrestore(&bb->lock, flags);
 
        return rv;
@@ -399,6 +421,7 @@ int badblocks_clear(struct badblocks *bb, sector_t s, int 
sectors)
                }
        }
 
+       badblocks_update_acked(bb);
        bb->changed = 1;
 out:
        write_sequnlock_irq(&bb->lock);
-- 
2.9.3

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