[B.A.T.M.A.N.] [PATCH] batman-adv: add compat RCU code for kernel < 2.6.37

[B.A.T.M.A.N.] [PATCH] batman-adv: add compat RCU code for kernel < 2.6.37

[Antonio Quartulli]

In linux version < 2.6.37 hlist_first_rcu() and hlist_next_rcu() do not exist
and therefore they need to be backported.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 compat.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/compat.h b/compat.h
index e1c6cd2..6a7e03b 100644
--- a/compat.h
+++ b/compat.h
@@ -129,6 +129,12 @@ static inline int batadv_param_set_copystring(const char *val,
 
 #endif /* < KERNEL_VERSION(2, 6, 36) */
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
+
+#define hlist_first_rcu(head)	(*((struct hlist_node __rcu **)(&(head)->first)))
+#define hlist_next_rcu(node)	(*((struct hlist_node __rcu **)(&(node)->next)))
+
+#endif /* < KERNEL_VERSION(2, 6, 37) */
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39)
 
@@ -236,6 +242,7 @@ static int __batadv_interface_set_mac_addr(x, y)
 	ASSERT_RTNL();\
 	dev->master;\
 })
+
 #define hlist_entry_safe(ptr, type, member) \
 	(ptr) ? hlist_entry(ptr, type, member) : NULL
 
-- 
1.8.1.5

Re: [B.A.T.M.A.N.] [PATCH] batman-adv: add compat RCU code for kernel < 2.6.37

[Marek Lindner]

On Saturday, March 16, 2013 18:49:38 Antonio Quartulli wrote:
> @@ -236,6 +242,7 @@ static int __batadv_interface_set_mac_addr(x, y)
>         ASSERT_RTNL();\
>         dev->master;\
>  })
> +
>  #define hlist_entry_safe(ptr, type, member) \
>         (ptr) ? hlist_entry(ptr, type, member) : NULL

Why the extra line here ?

Cheers,
Marek

Re: [B.A.T.M.A.N.] [PATCH] batman-adv: add compat RCU code for kernel < 2.6.37

[Antonio Quartulli]

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On Sat, Mar 16, 2013 at 07:08:43PM +0800, Marek Lindner wrote:
> On Saturday, March 16, 2013 18:49:38 Antonio Quartulli wrote:
> > @@ -236,6 +242,7 @@ static int __batadv_interface_set_mac_addr(x, y)
> >         ASSERT_RTNL();\
> >         dev->master;\
> >  })
> > +
> >  #define hlist_entry_safe(ptr, type, member) \
> >         (ptr) ? hlist_entry(ptr, type, member) : NULL
> 
> Why the extra line here ?

because at the beginning I put the new defines there, then I removed the defines
but I left the blank line...will send v2

Cheers,

-- 
Antonio Quartulli

..each of us alone is worth nothing..
Ernesto "Che" Guevara

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