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authorAlexey Dobriyan <adobriyan@gmail.com>2018-02-24 21:20:33 +0300
committerDavid S. Miller <davem@davemloft.net>2018-02-26 15:11:48 -0500
commit08009a760213cf6125af9453a51203f4ae108ba1 (patch)
treebcd9f2638df9b6d25f09eccc48b81ec1bee995a5
parentcb31232a9c6e30e2fedbd92694b749f484d519d8 (diff)
downloadlinux-08009a760213cf6125af9453a51203f4ae108ba1.tar.bz2
net: make kmem caches as __ro_after_init
All kmem caches aren't reallocated once set up. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/net_namespace.c2
-rw-r--r--net/core/skbuff.c4
-rw-r--r--net/ipv4/fib_trie.c5
-rw-r--r--net/ipv4/inetpeer.c3
-rw-r--r--net/ipv4/ipmr.c3
-rw-r--r--net/socket.c2
6 files changed, 11 insertions, 8 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 27a55236ad64..690e78c6af45 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -362,7 +362,7 @@ static void dec_net_namespaces(struct ucounts *ucounts)
dec_ucount(ucounts, UCOUNT_NET_NAMESPACES);
}
-static struct kmem_cache *net_cachep;
+static struct kmem_cache *net_cachep __ro_after_init;
static struct workqueue_struct *netns_wq;
static struct net *net_alloc(void)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 1a7485a2cdfa..96d36b81a3a5 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -77,8 +77,8 @@
#include <linux/capability.h>
#include <linux/user_namespace.h>
-struct kmem_cache *skbuff_head_cache __read_mostly;
-static struct kmem_cache *skbuff_fclone_cache __read_mostly;
+struct kmem_cache *skbuff_head_cache __ro_after_init;
+static struct kmem_cache *skbuff_fclone_cache __ro_after_init;
int sysctl_max_skb_frags __read_mostly = MAX_SKB_FRAGS;
EXPORT_SYMBOL(sysctl_max_skb_frags);
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 5530cd6fdbc7..62243a8abf92 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -50,6 +50,7 @@
#define VERSION "0.409"
+#include <linux/cache.h>
#include <linux/uaccess.h>
#include <linux/bitops.h>
#include <linux/types.h>
@@ -191,8 +192,8 @@ static size_t tnode_free_size;
*/
static const int sync_pages = 128;
-static struct kmem_cache *fn_alias_kmem __read_mostly;
-static struct kmem_cache *trie_leaf_kmem __read_mostly;
+static struct kmem_cache *fn_alias_kmem __ro_after_init;
+static struct kmem_cache *trie_leaf_kmem __ro_after_init;
static inline struct tnode *tn_info(struct key_vector *kv)
{
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 914d56928578..1f04bd91fc2e 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -6,6 +6,7 @@
* Authors: Andrey V. Savochkin <saw@msu.ru>
*/
+#include <linux/cache.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
@@ -51,7 +52,7 @@
* daddr: unchangeable
*/
-static struct kmem_cache *peer_cachep __read_mostly;
+static struct kmem_cache *peer_cachep __ro_after_init;
void inet_peer_base_init(struct inet_peer_base *bp)
{
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 7c7ac9d32e77..591d1fc80a1f 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -28,6 +28,7 @@
#include <linux/uaccess.h>
#include <linux/types.h>
+#include <linux/cache.h>
#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/timer.h>
@@ -96,7 +97,7 @@ static DEFINE_SPINLOCK(mfc_unres_lock);
* In this case data path is free of exclusive locks at all.
*/
-static struct kmem_cache *mrt_cachep __read_mostly;
+static struct kmem_cache *mrt_cachep __ro_after_init;
static struct mr_table *ipmr_new_table(struct net *net, u32 id);
static void ipmr_free_table(struct mr_table *mrt);
diff --git a/net/socket.c b/net/socket.c
index ab58e57c09ca..645d32b4872c 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -233,7 +233,7 @@ static int move_addr_to_user(struct sockaddr_storage *kaddr, int klen,
return __put_user(klen, ulen);
}
-static struct kmem_cache *sock_inode_cachep __read_mostly;
+static struct kmem_cache *sock_inode_cachep __ro_after_init;
static struct inode *sock_alloc_inode(struct super_block *sb)
{