2 files changed, 9 insertions, 1 deletions

diff --git a/init/Kconfig b/init/Kconfig
index d9d878a3bb46..63d52a089a9e 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -576,7 +576,7 @@ config SLUB
            and has enhanced diagnostics.
 
 config SLOB
-        depends on EMBEDDED && !SPARSEMEM
+        depends on EMBEDDED
         bool "SLOB (Simple Allocator)"
         help
            SLOB replaces the SLAB allocator with a drastically simpler
diff --git a/mm/slob.c b/mm/slob.c
index b99b0ef2347e..b4899079d8b0 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -634,6 +634,14 @@ int kmem_ptr_validate(struct kmem_cache *a, const void *b)
         return 0;
 }
 
+static unsigned int slob_ready __read_mostly;
+
+int slab_is_available(void)
+{
+        return slob_ready;
+}
+
 void __init kmem_cache_init(void)
 {
+        slob_ready = 1;
 }