From 15b458fa65cbba395724a99ab1b7d3785ca76c1c Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 16 Jul 2008 02:42:51 -0700
Subject: [PATCH] pkt_sched: Kill qdisc_lock_tree usage in cls_route.c
It just wants the qdisc tree to be synchronized, so grabbing
qdisc_root_lock() is sufficient.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/sched/cls_route.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 5a16ca28aa3..481260a4f10 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -73,11 +73,13 @@ static __inline__ int route4_fastmap_hash(u32 id, int iif)
}
static inline
-void route4_reset_fastmap(struct net_device *dev, struct route4_head *head, u32 id)
+void route4_reset_fastmap(struct Qdisc *q, struct route4_head *head, u32 id)
{
- qdisc_lock_tree(dev);
+ spinlock_t *root_lock = qdisc_root_lock(q);
+
+ spin_lock_bh(root_lock);
memset(head->fastmap, 0, sizeof(head->fastmap));
- qdisc_unlock_tree(dev);
+ spin_unlock_bh(root_lock);
}
static inline void
@@ -302,7 +304,7 @@ static int route4_delete(struct tcf_proto *tp, unsigned long arg)
*fp = f->next;
tcf_tree_unlock(tp);
- route4_reset_fastmap(qdisc_dev(tp->q), head, f->id);
+ route4_reset_fastmap(tp->q, head, f->id);
route4_delete_filter(tp, f);
/* Strip tree */
@@ -500,7 +502,7 @@ reinsert:
}
tcf_tree_unlock(tp);
- route4_reset_fastmap(qdisc_dev(tp->q), head, f->id);
+ route4_reset_fastmap(tp->q, head, f->id);
*arg = (unsigned long)f;
return 0;
--
2.41.3