From 3570df914f9cae15df7f6ba472a51eaf798fdb46 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michal=20Kube=C4=8Dek?= Date: Tue, 8 Mar 2016 14:44:25 +0100 Subject: [PATCH] ipv6: replace global gc_args with local variable Global variable gc_args is only used in fib6_run_gc() and functions called from it. As fib6_run_gc() makes sure there is at most one instance of fib6_clean_all() running at any moment, we can replace gc_args with a local variable which will be needed once multiple instances (per netns) of garbage collector are allowed. Signed-off-by: Michal Kubecek Reviewed-by: Cong Wang Signed-off-by: David S. Miller --- net/ipv6/ip6_fib.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index 0c7e276c230e..d7c715accac9 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -1725,14 +1725,15 @@ static void fib6_flush_trees(struct net *net) * Garbage collection */ -static struct fib6_gc_args +struct fib6_gc_args { int timeout; int more; -} gc_args; +}; static int fib6_age(struct rt6_info *rt, void *arg) { + struct fib6_gc_args *gc_args = arg; unsigned long now = jiffies; /* @@ -1748,10 +1749,10 @@ static int fib6_age(struct rt6_info *rt, void *arg) RT6_TRACE("expiring %p\n", rt); return -1; } - gc_args.more++; + gc_args->more++; } else if (rt->rt6i_flags & RTF_CACHE) { if (atomic_read(&rt->dst.__refcnt) == 0 && - time_after_eq(now, rt->dst.lastuse + gc_args.timeout)) { + time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) { RT6_TRACE("aging clone %p\n", rt); return -1; } else if (rt->rt6i_flags & RTF_GATEWAY) { @@ -1769,7 +1770,7 @@ static int fib6_age(struct rt6_info *rt, void *arg) return -1; } } - gc_args.more++; + gc_args->more++; } return 0; @@ -1779,6 +1780,7 @@ static DEFINE_SPINLOCK(fib6_gc_lock); void fib6_run_gc(unsigned long expires, struct net *net, bool force) { + struct fib6_gc_args gc_args; unsigned long now; if (force) { @@ -1792,7 +1794,7 @@ void fib6_run_gc(unsigned long expires, struct net *net, bool force) gc_args.more = icmp6_dst_gc(); - fib6_clean_all(net, fib6_age, NULL); + fib6_clean_all(net, fib6_age, &gc_args); now = jiffies; net->ipv6.ip6_rt_last_gc = now; -- 2.20.1