On Tue, Jul 01, 2014 at 03:15:47PM -0700, Andrew Morton wrote:
> On Tue, 1 Jul 2014 17:27:34 +0900 Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> wrote:
>
> > -static struct array_cache **alloc_alien_cache(int node, int limit, gfp_t gfp)
> > +static struct alien_cache *__alloc_alien_cache(int node, int entries,
> > + int batch, gfp_t gfp)
> > +{
> > + int memsize = sizeof(void *) * entries + sizeof(struct alien_cache);
>
> nit: all five memsizes in slab.c have type `int'. size_t would be more
> appropriate.
>
Hello,
As my inspection, there are 4 memsize. Can you confirm that?
Anyway, here goes the patch you suggested.
Thanks.
----------8<-----------------
>From e9ae011804f3d90375b2e50c0dbd95e708afc509 Mon Sep 17 00:00:00 2001
From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Date: Wed, 2 Jul 2014 09:23:05 +0900
Subject: [PATCH] slab: change int to size_t for representing allocation size
It is better to represent allocation size in size_t rather than int.
So change it.
Suggested-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
diff --git a/mm/slab.c b/mm/slab.c
index 5b0224c..e7763db 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -681,7 +681,7 @@ static void init_arraycache(struct array_cache *ac, int limit, int batch)
static struct array_cache *alloc_arraycache(int node, int entries,
int batchcount, gfp_t gfp)
{
- int memsize = sizeof(void *) * entries + sizeof(struct array_cache);
+ size_t memsize = sizeof(void *) * entries + sizeof(struct array_cache);
struct array_cache *ac = NULL;
ac = kmalloc_node(memsize, gfp, node);
@@ -868,7 +868,7 @@ static void *alternate_node_alloc(struct kmem_cache *, gfp_t);
static struct alien_cache *__alloc_alien_cache(int node, int entries,
int batch, gfp_t gfp)
{
- int memsize = sizeof(void *) * entries + sizeof(struct alien_cache);
+ size_t memsize = sizeof(void *) * entries + sizeof(struct alien_cache);
struct alien_cache *alc = NULL;
alc = kmalloc_node(memsize, gfp, node);
@@ -880,7 +880,7 @@ static struct alien_cache *__alloc_alien_cache(int node, int entries,
static struct alien_cache **alloc_alien_cache(int node, int limit, gfp_t gfp)
{
struct alien_cache **alc_ptr;
- int memsize = sizeof(void *) * nr_node_ids;
+ size_t memsize = sizeof(void *) * nr_node_ids;
int i;
if (limit > 1)
@@ -1037,7 +1037,7 @@ static int init_cache_node_node(int node)
{
struct kmem_cache *cachep;
struct kmem_cache_node *n;
- const int memsize = sizeof(struct kmem_cache_node);
+ const size_t memsize = sizeof(struct kmem_cache_node);
list_for_each_entry(cachep, &slab_caches, list) {
/*
--
1.7.9.5
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