diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 4ea756ac1a69..9ecee51266cf 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -542,6 +542,8 @@ static void __init fdt_init_reserved_mem_node(struct reserved_mem *rmem)
 
 		memblock_memsize_record(rmem->name, rmem->base,
 					rmem->size, nomap, reusable);
+		if (reusable && !of_flat_dt_is_compatible(node, "shared-dma-pool"))
+			memblock_memsize_mod_reusable_size(rmem->size);
 	}
 }
 
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 5d3811b4e9aa..f5dea093d7e1 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -603,6 +603,7 @@ extern void memblock_memsize_mod_kernel_size(long size);
 extern void __init memblock_memsize_mod_memmap_size(long size);
 extern void __init memblock_memsize_kernel_code_data(unsigned long code,
 		unsigned long data, unsigned long ro, unsigned long bss);
+extern void memblock_memsize_mod_reusable_size(long size);
 #else
 static inline void __init_memblock memblock_memsize_record(const char *name,
 		phys_addr_t base, phys_addr_t size, bool nomap, bool reusable) { }
@@ -613,6 +614,7 @@ static inline void memblock_memsize_mod_kernel_size(long size) { }
 static inline void __init memblock_memsize_mod_memmap_size(long size) { }
 static inline void __init memblock_memsize_kernel_code_data(unsigned long code,
 		unsigned long data, unsigned long ro, unsigned long bss) { }
+static inline void memblock_memsize_mod_reusable_size(long size) { }
 #endif
 
 #endif /* _LINUX_MEMBLOCK_H */
diff --git a/mm/memblock.c b/mm/memblock.c
index df8bdd8079ea..35c438146233 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -2084,6 +2084,7 @@ static unsigned long memsize_code __initdata_memblock;
 static unsigned long memsize_data __initdata_memblock;
 static unsigned long memsize_ro __initdata_memblock;
 static unsigned long memsize_bss __initdata_memblock;
+static long memsize_reusable_size;
 
 void __init memblock_memsize_enable_tracking(void)
 {
@@ -2133,6 +2134,11 @@ static void __init_memblock memsize_get_valid_name(char *valid_name, const char
 	strscpy(valid_name, head, valid_size);
 }
 
+void memblock_memsize_mod_reusable_size(long size)
+{
+	memsize_reusable_size += size;
+}
+
 static inline struct memsize_rgn_struct * __init_memblock memsize_get_new_rgn(void)
 {
 	if (memsize_rgn_count == ARRAY_SIZE(memsize_rgn)) {
@@ -2802,6 +2808,7 @@ static int memblock_memsize_show(struct seq_file *m, void *private)
 	etc -= memsize_code + memsize_data + memsize_ro + memsize_bss +
 		memsize_memmap;
 
+	system += memsize_reusable_size;
 	sort(memsize_rgn, memsize_rgn_count,
 	     sizeof(memsize_rgn[0]), memsize_rgn_cmp, NULL);
 	for (i = 0; i < memsize_rgn_count; i++) {