diff --git a/etna/source/BlockingTransferHelper.cpp b/etna/source/BlockingTransferHelper.cpp
index 2215573..303e29c 100644
--- a/etna/source/BlockingTransferHelper.cpp
+++ b/etna/source/BlockingTransferHelper.cpp
@@ -21,7 +21,6 @@ BlockingTransferHelper::BlockingTransferHelper(CreateInfo info)
       .name = "BlockingTransferHelper::stagingBuffer",
     })}
 {
-  stagingBuffer.map();
 }
 
 void BlockingTransferHelper::uploadBuffer(
diff --git a/etna/source/Buffer.cpp b/etna/source/Buffer.cpp
index f8455ee..3ea102c 100644
--- a/etna/source/Buffer.cpp
+++ b/etna/source/Buffer.cpp
@@ -45,10 +45,7 @@ Buffer::Buffer(VmaAllocator alloc, CreateInfo info)
     vk::to_string(static_cast<vk::Result>(retcode)));
   buffer = vk::Buffer(buf);
 
-  // make map() forbidden for the user if allocationCreate has VMA_ALLOCATION_CREATE_MAPPED_BIT
-  if ((info.allocationCreate & VMA_ALLOCATION_CREATE_MAPPED_BIT) != 0u)
-    mapped = map();
-
+  mapped = reinterpret_cast<std::byte*>(allocInfo.pMappedData);
   ETNA_VERIFY(mapped == nullptr || info.allocationCreate & VMA_ALLOCATION_CREATE_MAPPED_BIT);
 
   etna::set_debug_name(buffer, info.name.data());
@@ -88,9 +85,6 @@ void Buffer::reset()
   if (!buffer)
     return;
 
-  if (mapped != nullptr)
-    unmap();
-
   vmaDestroyBuffer(allocator, VkBuffer(buffer), allocation);
   allocator = {};
   allocation = {};
diff --git a/etna/source/Etna.cpp b/etna/source/Etna.cpp
index 55566b2..188c66c 100644
--- a/etna/source/Etna.cpp
+++ b/etna/source/Etna.cpp
@@ -102,9 +102,7 @@ Image create_image_from_bytes(Image::CreateInfo info, vk::CommandBuffer cmd_buf,
     .name = "tmp_staging_buf",
   });
 
-  auto* mappedMem = stagingBuf.map();
-  std::memcpy(mappedMem, data, fullSize);
-  stagingBuf.unmap();
+  std::memcpy(stagingBuf.data(), data, fullSize);
 
   ETNA_CHECK_VK_RESULT(cmd_buf.begin(vk::CommandBufferBeginInfo{
     .flags = vk::CommandBufferUsageFlagBits::eOneTimeSubmit,
diff --git a/etna/source/PerFrameTransferHelper.cpp b/etna/source/PerFrameTransferHelper.cpp
index 921d1d9..c30472a 100644
--- a/etna/source/PerFrameTransferHelper.cpp
+++ b/etna/source/PerFrameTransferHelper.cpp
@@ -63,7 +63,6 @@ PerFrameTransferHelper::PerFrameTransferHelper(CreateInfo info)
     stagingSize <= MAX_STAGING_SIZE,
     "PerFrameTransferHelper: total staging size can not exceed {} * multibuffering.",
     MAX_STAGING_SIZE);
-  stagingBuffer.iterate([](auto& buf) { buf.map(); });
 }
 
 void PerFrameTransferHelper::UploadProcessor::finish()