Commit 446e7f21 authored by zhang kai's avatar zhang kai Committed by David S. Miller
Browse files

ipv6: correct comments about fib6_node sernum 



correct comments in set and get fn_sernum

Signed-off-by: default avatarzhang kai <zhangkaiheb@126.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b0cd0853

include/net/ip6_fib.h

+2 −2
Original line number Diff line number Diff line
@@ -267,7 +267,7 @@ static inline bool fib6_check_expired(const struct fib6_info *f6i) 
	return false;

}



/* Function to safely get fn->sernum for passed in rt

/* Function to safely get fn->fn_sernum for passed in rt

 * and store result in passed in cookie.

 * Return true if we can get cookie safely

 * Return false if not
@@ -282,7 +282,7 @@ static inline bool fib6_get_cookie_safe(const struct fib6_info *f6i, 


	if (fn) {

		*cookie = fn->fn_sernum;

		/* pairs with smp_wmb() in fib6_update_sernum_upto_root() */

		/* pairs with smp_wmb() in __fib6_update_sernum_upto_root() */

		smp_rmb();

		status = true;

	}

net/ipv6/ip6_fib.c

+1 −1
Original line number Diff line number Diff line
@@ -1341,7 +1341,7 @@ static void __fib6_update_sernum_upto_root(struct fib6_info *rt, 
	struct fib6_node *fn = rcu_dereference_protected(rt->fib6_node,

				lockdep_is_held(&rt->fib6_table->tb6_lock));



	/* paired with smp_rmb() in rt6_get_cookie_safe() */

	/* paired with smp_rmb() in fib6_get_cookie_safe() */

	smp_wmb();

	while (fn) {

		fn->fn_sernum = sernum;