os/bluestore/BitAllocator: fix bug of checking required blocks

Signed-off-by: wangzhengyong@cmss.chinamobile.com
ceph · Feb 17, 2017 · cdc72cf · cdc72cf
1 parent c6113d7
commit cdc72cf
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/os/bluestore/BitAllocator.cc b/src/os/bluestore/BitAllocator.cc
@@ -1338,6 +1338,10 @@ bool BitAllocator::child_check_n_lock(BitMapArea *child, int64_t required)
     return false;
   }
 
+  if ((m_total_blocks - m_used_blocks) < required) {
+    child->unlock();
+    return false;
+  }
 
   return true;
 }