aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--include/linux/slub_def.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index ea27065e80e..fd6627e2d11 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -60,7 +60,8 @@ struct kmem_cache {
#define KMALLOC_SHIFT_LOW 3
#ifdef CONFIG_LARGE_ALLOCS
-#define KMALLOC_SHIFT_HIGH 25
+#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT) =< 25 ? \
+ (MAX_ORDER + PAGE_SHIFT - 1) : 25)
#else
#if !defined(CONFIG_MMU) || NR_CPUS > 512 || MAX_NUMNODES > 256
#define KMALLOC_SHIFT_HIGH 20
@@ -87,6 +88,9 @@ static inline int kmalloc_index(int size)
*/
WARN_ON_ONCE(size == 0);
+ if (size >= (1 << KMALLOC_SHIFT_HIGH))
+ return -1;
+
if (size > 64 && size <= 96)
return 1;
if (size > 128 && size <= 192)