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Date: Mon, 5 Mar 2018 23:07:26 +0300
From: Alexey Dobriyan <adobriyan@...il.com>
To: akpm@...ux-foundation.org
Cc: cl@...ux.com, penberg@...nel.org, rientjes@...gle.com,
iamjoonsoo.kim@....com, linux-mm@...ck.org, adobriyan@...il.com,
netdev@...r.kernel.org
Subject: [PATCH 21/25] slab: make usercopy region 32-bit
If kmem case sizes are 32-bit, then usecopy region should be too.
Cc: netdev@...r.kernel.org
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---
include/linux/slab.h | 2 +-
include/linux/slab_def.h | 4 ++--
include/linux/slub_def.h | 4 ++--
include/net/sock.h | 4 ++--
mm/slab.h | 4 ++--
mm/slab_common.c | 7 ++++---
mm/slub.c | 2 +-
7 files changed, 14 insertions(+), 13 deletions(-)
diff --git a/include/linux/slab.h b/include/linux/slab.h
index d36e8f03730e..04402c637171 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -143,7 +143,7 @@ struct kmem_cache *kmem_cache_create(const char *name, unsigned int size,
struct kmem_cache *kmem_cache_create_usercopy(const char *name,
unsigned int size, unsigned int align,
slab_flags_t flags,
- size_t useroffset, size_t usersize,
+ unsigned int useroffset, unsigned int usersize,
void (*ctor)(void *));
void kmem_cache_destroy(struct kmem_cache *);
int kmem_cache_shrink(struct kmem_cache *);
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 7385547c04b1..d9228e4d0320 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -85,8 +85,8 @@ struct kmem_cache {
unsigned int *random_seq;
#endif
- size_t useroffset; /* Usercopy region offset */
- size_t usersize; /* Usercopy region size */
+ unsigned int useroffset; /* Usercopy region offset */
+ unsigned int usersize; /* Usercopy region size */
struct kmem_cache_node *node[MAX_NUMNODES];
};
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index bc02fd3a8ccf..623d6ba92036 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -137,8 +137,8 @@ struct kmem_cache {
struct kasan_cache kasan_info;
#endif
- size_t useroffset; /* Usercopy region offset */
- size_t usersize; /* Usercopy region size */
+ unsigned int useroffset; /* Usercopy region offset */
+ unsigned int usersize; /* Usercopy region size */
struct kmem_cache_node *node[MAX_NUMNODES];
};
diff --git a/include/net/sock.h b/include/net/sock.h
index 169c92afcafa..c86b1ebaae7a 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1109,8 +1109,8 @@ struct proto {
struct kmem_cache *slab;
unsigned int obj_size;
slab_flags_t slab_flags;
- size_t useroffset; /* Usercopy region offset */
- size_t usersize; /* Usercopy region size */
+ unsigned int useroffset; /* Usercopy region offset */
+ unsigned int usersize; /* Usercopy region size */
struct percpu_counter *orphan_count;
diff --git a/mm/slab.h b/mm/slab.h
index 8f1072f49285..e8981e811c45 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -22,8 +22,8 @@ struct kmem_cache {
unsigned int size; /* The aligned/padded/added on size */
unsigned int align; /* Alignment as calculated */
slab_flags_t flags; /* Active flags on the slab */
- size_t useroffset; /* Usercopy region offset */
- size_t usersize; /* Usercopy region size */
+ unsigned int useroffset;/* Usercopy region offset */
+ unsigned int usersize; /* Usercopy region size */
const char *name; /* Slab name for sysfs */
int refcount; /* Use counter */
void (*ctor)(void *); /* Called on object slot creation */
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 3e07b1fb22bd..01224cb90080 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -380,8 +380,8 @@ struct kmem_cache *find_mergeable(unsigned int size, unsigned int align,
static struct kmem_cache *create_cache(const char *name,
unsigned int object_size, unsigned int size, unsigned int align,
- slab_flags_t flags, size_t useroffset,
- size_t usersize, void (*ctor)(void *),
+ slab_flags_t flags, unsigned int useroffset,
+ unsigned int usersize, void (*ctor)(void *),
struct mem_cgroup *memcg, struct kmem_cache *root_cache)
{
struct kmem_cache *s;
@@ -454,7 +454,8 @@ static struct kmem_cache *create_cache(const char *name,
struct kmem_cache *
kmem_cache_create_usercopy(const char *name,
unsigned int size, unsigned int align,
- slab_flags_t flags, size_t useroffset, size_t usersize,
+ slab_flags_t flags,
+ unsigned int useroffset, unsigned int usersize,
void (*ctor)(void *))
{
struct kmem_cache *s = NULL;
diff --git a/mm/slub.c b/mm/slub.c
index 87a7a947f2c9..865d964f4c93 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5080,7 +5080,7 @@ SLAB_ATTR_RO(cache_dma);
static ssize_t usersize_show(struct kmem_cache *s, char *buf)
{
- return sprintf(buf, "%zu\n", s->usersize);
+ return sprintf(buf, "%u\n", s->usersize);
}
SLAB_ATTR_RO(usersize);
--
2.16.1
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