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-rw-r--r--mm/slab_common.c25
1 files changed, 10 insertions, 15 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index f6fe35105774..90ecaface410 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -47,7 +47,7 @@ static DECLARE_WORK(slab_caches_to_rcu_destroy_work,
*/
#define SLAB_NEVER_MERGE (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \
SLAB_TRACE | SLAB_TYPESAFE_BY_RCU | SLAB_NOLEAKTRACE | \
- SLAB_FAILSLAB | kasan_never_merge())
+ SLAB_FAILSLAB | SLAB_NO_MERGE | kasan_never_merge())
#define SLAB_MERGE_SAME (SLAB_RECLAIM_ACCOUNT | SLAB_CACHE_DMA | \
SLAB_CACHE_DMA32 | SLAB_ACCOUNT)
@@ -876,17 +876,17 @@ new_kmalloc_cache(int idx, enum kmalloc_cache_type type, slab_flags_t flags)
flags |= SLAB_CACHE_DMA;
}
- kmalloc_caches[type][idx] = create_kmalloc_cache(
- kmalloc_info[idx].name[type],
- kmalloc_info[idx].size, flags, 0,
- kmalloc_info[idx].size);
-
/*
* If CONFIG_MEMCG_KMEM is enabled, disable cache merging for
* KMALLOC_NORMAL caches.
*/
if (IS_ENABLED(CONFIG_MEMCG_KMEM) && (type == KMALLOC_NORMAL))
- kmalloc_caches[type][idx]->refcount = -1;
+ flags |= SLAB_NO_MERGE;
+
+ kmalloc_caches[type][idx] = create_kmalloc_cache(
+ kmalloc_info[idx].name[type],
+ kmalloc_info[idx].size, flags, 0,
+ kmalloc_info[idx].size);
}
/*
@@ -1139,7 +1139,7 @@ EXPORT_SYMBOL(kmalloc_large_node);
#ifdef CONFIG_SLAB_FREELIST_RANDOM
/* Randomize a generic freelist */
-static void freelist_randomize(struct rnd_state *state, unsigned int *list,
+static void freelist_randomize(unsigned int *list,
unsigned int count)
{
unsigned int rand;
@@ -1150,8 +1150,7 @@ static void freelist_randomize(struct rnd_state *state, unsigned int *list,
/* Fisher-Yates shuffle */
for (i = count - 1; i > 0; i--) {
- rand = prandom_u32_state(state);
- rand %= (i + 1);
+ rand = get_random_u32_below(i + 1);
swap(list[i], list[rand]);
}
}
@@ -1160,7 +1159,6 @@ static void freelist_randomize(struct rnd_state *state, unsigned int *list,
int cache_random_seq_create(struct kmem_cache *cachep, unsigned int count,
gfp_t gfp)
{
- struct rnd_state state;
if (count < 2 || cachep->random_seq)
return 0;
@@ -1169,10 +1167,7 @@ int cache_random_seq_create(struct kmem_cache *cachep, unsigned int count,
if (!cachep->random_seq)
return -ENOMEM;
- /* Get best entropy at this stage of boot */
- prandom_seed_state(&state, get_random_long());
-
- freelist_randomize(&state, cachep->random_seq, count);
+ freelist_randomize(cachep->random_seq, count);
return 0;
}