os/bluestore/BitAllocator: fix race condition for check_bit()

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>

diff --git a/src/os/bluestore/BitAllocator.cc b/src/os/bluestore/BitAllocator.cc
index f72131d83e473a6a47e70ac596d800c29e45ffc1..4d419d4f1947281ea59b92ed8829c97a6cb74ed4 100644 (file)
--- a/src/os/bluestore/BitAllocator.cc
+++ b/src/os/bluestore/BitAllocator.cc
@@ -128,7 +128,7 @@ bmap_t BmapEntry::bit_mask(int bit)
 }
 bool BmapEntry::check_bit(int bit)
 {
-  return (m_bits & bit_mask(bit));
+  return (atomic_fetch() & bit_mask(bit));
 }
 
 bmap_t BmapEntry::atomic_fetch()