[PATCH] xfrm: mark kmem_caches as __ro_after_init

[PATCH] xfrm: mark kmem_caches as __ro_after_init

[Alexey Dobriyan]

Kmem caches aren't relocated once set up.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 net/xfrm/xfrm_input.c  |    3 ++-
 net/xfrm/xfrm_policy.c |    2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/bottom_half.h>
+#include <linux/cache.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
 #include <linux/module.h>
@@ -31,7 +32,7 @@ struct xfrm_trans_cb {
 
 #define XFRM_TRANS_SKB_CB(__skb) ((struct xfrm_trans_cb *)&((__skb)->cb[0]))
 
-static struct kmem_cache *secpath_cachep __read_mostly;
+static struct kmem_cache *secpath_cachep __ro_after_init;
 
 static DEFINE_SPINLOCK(xfrm_input_afinfo_lock);
 static struct xfrm_input_afinfo const __rcu *xfrm_input_afinfo[AF_INET6 + 1];
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -51,7 +51,7 @@ static DEFINE_SPINLOCK(xfrm_policy_afinfo_lock);
 static struct xfrm_policy_afinfo const __rcu *xfrm_policy_afinfo[AF_INET6 + 1]
 						__read_mostly;
 
-static struct kmem_cache *xfrm_dst_cache __read_mostly;
+static struct kmem_cache *xfrm_dst_cache __ro_after_init;
 static __read_mostly seqcount_t xfrm_policy_hash_generation;
 
 static void xfrm_init_pmtu(struct xfrm_dst **bundle, int nr);

Re: [PATCH] xfrm: mark kmem_caches as __ro_after_init

[Steffen Klassert]

On Sat, Feb 24, 2018 at 09:21:38PM +0300, Alexey Dobriyan wrote:
> Kmem caches aren't relocated once set up.
> 
> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Applied to ipsec-next, thanks a lot!