diff --git a/headers/os/drivers/fs_cache.h b/headers/os/drivers/fs_cache.h
index 9a71a5b5e1..8c8193c35d 100644
--- a/headers/os/drivers/fs_cache.h
+++ b/headers/os/drivers/fs_cache.h
@@ -53,6 +53,7 @@ extern status_t cache_next_block_in_transaction(void *cache, int32 id,
 extern int32 cache_blocks_in_transaction(void *cache, int32 id);
 extern int32 cache_blocks_in_main_transaction(void *cache, int32 id);
 extern int32 cache_blocks_in_sub_transaction(void *cache, int32 id);
+extern bool cache_has_block_in_transaction(void* cache, int32 id, off_t blockNumber);
 
 /* block cache */
 extern void block_cache_delete(void *cache, bool allowWrites);
diff --git a/headers/private/fs_shell/fssh_api_wrapper.h b/headers/private/fs_shell/fssh_api_wrapper.h
index 233f8b49f7..7c1e0b35a5 100644
--- a/headers/private/fs_shell/fssh_api_wrapper.h
+++ b/headers/private/fs_shell/fssh_api_wrapper.h
@@ -835,6 +835,7 @@
 #define cache_blocks_in_transaction		fssh_cache_blocks_in_transaction
 #define cache_blocks_in_main_transaction fssh_cache_blocks_in_main_transaction
 #define cache_blocks_in_sub_transaction	fssh_cache_blocks_in_sub_transaction
+#define cache_has_block_in_transaction	fssh_cache_has_block_in_transaction
 
 /* block cache */
 #define block_cache_delete				fssh_block_cache_delete
diff --git a/headers/private/fs_shell/fssh_fs_cache.h b/headers/private/fs_shell/fssh_fs_cache.h
index 88cc9a392e..c27052c484 100644
--- a/headers/private/fs_shell/fssh_fs_cache.h
+++ b/headers/private/fs_shell/fssh_fs_cache.h
@@ -62,6 +62,8 @@ extern int32_t			fssh_cache_blocks_in_main_transaction(void *_cache,
 							int32_t id);
 extern int32_t			fssh_cache_blocks_in_sub_transaction(void *_cache,
 							int32_t id);
+extern bool				fssh_cache_has_block_in_transaction(void *_cache,
+							int32_t id, fssh_off_t blockNumber);
 
 /* block cache */
 extern void				fssh_block_cache_delete(void *_cache, bool allowWrites);
diff --git a/src/system/kernel/cache/block_cache.cpp b/src/system/kernel/cache/block_cache.cpp
index 9482bec2de..5d76a79d10 100644
--- a/src/system/kernel/cache/block_cache.cpp
+++ b/src/system/kernel/cache/block_cache.cpp
@@ -3301,6 +3301,21 @@ cache_blocks_in_sub_transaction(void* _cache, int32 id)
 }
 
 
+/*!	Check if block is in transaction
+*/
+bool
+cache_has_block_in_transaction(void* _cache, int32 id, off_t blockNumber)
+{
+	block_cache* cache = (block_cache*)_cache;
+	TransactionLocker locker(cache);
+
+	cached_block* block = cache->hash->Lookup(blockNumber);
+
+	return (block != NULL && block->transaction != NULL
+		&& block->transaction->id == id);
+}
+
+
 //	#pragma mark - public block cache API
 
 
diff --git a/src/tools/fs_shell/block_cache.cpp b/src/tools/fs_shell/block_cache.cpp
index 461e0bc308..26132ec664 100644
--- a/src/tools/fs_shell/block_cache.cpp
+++ b/src/tools/fs_shell/block_cache.cpp
@@ -1462,6 +1462,20 @@ fssh_cache_blocks_in_sub_transaction(void* _cache, int32_t id)
 }
 
 
+bool
+fssh_cache_has_block_in_transaction(void* _cache, int32_t id,
+	fssh_off_t blockNumber)
+{
+	block_cache* cache = (block_cache*)_cache;
+	MutexLocker locker(&cache->lock);
+
+	cached_block* block = (cached_block*)hash_lookup(cache->hash, &blockNumber);
+
+	return (block != NULL && block->transaction != NULL
+		&& block->transaction->id == id);
+}
+
+
 //	#pragma mark - public block cache API