diff --git a/src/os/bluestore/BitMapAllocator.cc b/src/os/bluestore/BitMapAllocator.cc
index a254c34f00b..54e986e3ca1 100644
--- a/src/os/bluestore/BitMapAllocator.cc
+++ b/src/os/bluestore/BitMapAllocator.cc
@@ -147,7 +147,6 @@ int64_t BitMapAllocator::allocate_dis(
 void BitMapAllocator::release(
   uint64_t offset, uint64_t length)
 {
-  std::lock_guard<std::mutex> l(m_lock);
   dout(10) << __func__ << " 0x"
            << std::hex << offset << "~" << length << std::dec
            << dendl;
@@ -164,7 +163,6 @@ uint64_t BitMapAllocator::get_free()
 
 void BitMapAllocator::dump()
 {
-  std::lock_guard<std::mutex> l(m_lock);
   dout(0) << __func__ << " instance " << this << dendl;
   m_bit_alloc->dump();
 }
diff --git a/src/os/bluestore/BitMapAllocator.h b/src/os/bluestore/BitMapAllocator.h
index 17bb2560394..21d10f33bf4 100644
--- a/src/os/bluestore/BitMapAllocator.h
+++ b/src/os/bluestore/BitMapAllocator.h
@@ -12,7 +12,6 @@
 
 class BitMapAllocator : public Allocator {
   CephContext* cct;
-  std::mutex m_lock;
 
   int64_t m_block_size;