diff options
| -rw-r--r-- | include/linux/slub_def.h | 8 | ||||
| -rw-r--r-- | mm/slub.c | 2 |
2 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 30b154ce728..f8e0c86c48a 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -80,8 +80,12 @@ extern struct kmem_cache kmalloc_caches[KMALLOC_SHIFT_HIGH + 1]; */ static inline int kmalloc_index(int size) { - if (size == 0) - return 0; + /* + * We should return 0 if size == 0 but we use the smallest object + * here for SLAB legacy reasons. + */ + WARN_ON_ONCE(size == 0); + if (size > 64 && size <= 96) return 1; if (size > 128 && size <= 192) diff --git a/mm/slub.c b/mm/slub.c index 4a8585befd8..9d52cce7c99 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1979,7 +1979,7 @@ static struct kmem_cache *get_slab(size_t size, gfp_t flags) { int index = kmalloc_index(size); - if (!size) + if (!index) return NULL; /* Allocation too large? */ |