diff --git a/include/spdk/env.h b/include/spdk/env.h
index 395915a58..d8bca3cf0 100644
--- a/include/spdk/env.h
+++ b/include/spdk/env.h
@@ -130,6 +130,21 @@ void *spdk_malloc(size_t size, size_t align, uint64_t *phys_addr, int socket_id,
  */
 void *spdk_zmalloc(size_t size, size_t align, uint64_t *phys_addr, int socket_id, uint32_t flags);
 
+/**
+ * Resize a dma/sharable memory buffer with the given new size and alignment.
+ * Existing contents are preserved.
+ *
+ * \param buf Buffer to resize.
+ * \param size Size in bytes.
+ * \param align Alignment value for the allocated memory. If '0', the allocated
+ * buffer is suitably aligned (in the same manner as malloc()). Otherwise, the
+ * allocated buffer is aligned to the multiple of align. In this case, it must
+ * be a power of two.
+ *
+ * \return a pointer to the resized memory buffer.
+ */
+void *spdk_realloc(void *buf, size_t size, size_t align);
+
 /**
  * Free buffer memory that was previously allocated with spdk_malloc() or spdk_zmalloc().
  *
diff --git a/lib/env_dpdk/env.c b/lib/env_dpdk/env.c
index 28b8862d6..ac9f702c1 100644
--- a/lib/env_dpdk/env.c
+++ b/lib/env_dpdk/env.c
@@ -89,6 +89,12 @@ spdk_zmalloc(size_t size, size_t align, uint64_t *phys_addr, int socket_id, uint
 	return buf;
 }
 
+void *
+spdk_realloc(void *buf, size_t size, size_t align)
+{
+	return rte_realloc(buf, size, align);
+}
+
 void
 spdk_free(void *buf)
 {
diff --git a/test/common/lib/test_env.c b/test/common/lib/test_env.c
index 0b8cc74b1..44a3cf16a 100644
--- a/test/common/lib/test_env.c
+++ b/test/common/lib/test_env.c
@@ -114,6 +114,15 @@ spdk_dma_malloc(size_t size, size_t align, uint64_t *phys_addr)
 	return spdk_malloc(size, align, phys_addr, -1, 1);
 }
 
+DEFINE_RETURN_MOCK(spdk_realloc, void *);
+void *
+spdk_realloc(void *buf, size_t size, size_t align)
+{
+	HANDLE_RETURN_MOCK(spdk_realloc);
+
+	return realloc(buf, size);
+}
+
 DEFINE_RETURN_MOCK(spdk_dma_zmalloc, void *);
 void *
 spdk_dma_zmalloc(size_t size, size_t align, uint64_t *phys_addr)